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1.
Zootaxa ; 5406(3): 401-420, 2024 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-38480143

RESUMEN

We describe a new species of the Scinax cruentomma species group, with a red streak in the iris and a weakly bilobate vocal sac. It is known from oligotrophic soils in the sedimentary basin of the Ucayali River near Jenaro Herrera (province of Requena, Peru) and Ro Blanco (buffer zone of the Matses Indigenous territory and reserve). The new species can be distinguished from the other species of the S. cruentomma group by its small snout-vent length, body and iris color patterns, weakly bilobate vocal sac, myological characters, and the number of notes and pulses of the advertisement call. It is morphologically most similar to S. strussmannae, from which the advertisement call, nostril, canthus rostralis, and loreal region can distinguish it.


Asunto(s)
Anuros , Ortópteros , Animales , Anuros/anatomía & histología , Perú , Ríos , Vocalización Animal
2.
Animals (Basel) ; 14(5)2024 Feb 27.
Artículo en Inglés | MEDLINE | ID: mdl-38473117

RESUMEN

Human-to-animal transmission events of SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) have been reported in both domestic and wild species worldwide. Despite the high rates of contagion and mortality during the COVID-19 (Coronavirus Diseases 2019) pandemic in Peru, no instances of natural virus infection have been documented in wild animals, particularly in the Amazonian regions where human-wildlife interactions are prevalent. In this study, we conducted a surveillance investigation using viral RNA sequencing of fecal samples collected from 76 captive and semi-captive non-human primates (NHPs) in the Loreto, Ucayali, and Madre de Dios regions between August 2022 and February 2023. We detected a segment of the RNA-dependent RNA polymerase (RdRp) gene of SARS-CoV-2 by metagenomic sequencing in a pooled fecal sample from captive white-fronted capuchins (Cebus unicolor) at a rescue center in Bello Horizonte, Ucayali. Phylogenetic analysis further confirmed that the retrieved partial sequence of the RdRp gene matched the SARS-CoV-2 genome. This study represents the first documented instance of molecular SARS-CoV-2 detection in NHPs in the Peruvian Amazon, underscoring the adverse impact of anthropic activities on the human-NHP interface and emphasizing the importance of ongoing surveillance for early detection and prediction of future emergence of new SARS-CoV-2 variants in animals.

3.
Evolution ; 78(1): 53-68, 2024 Jan 04.
Artículo en Inglés | MEDLINE | ID: mdl-37862587

RESUMEN

Rivers frequently delimit the geographic ranges of species in the Amazon Basin. These rivers also define the boundaries between genetic clusters within many species, yet river boundaries have been documented to break down in headwater regions where rivers are narrower. To explore the evolutionary implications of headwater contact zones in Amazonia, we examined genetic variation in the Blue-capped Manakin (Lepidothrix coronata), a species previously shown to contain several genetically and phenotypically distinct populations across the western Amazon Basin. We collected restriction site-associated DNA sequence data (RADcap) for 706 individuals and found that spatial patterns of genetic structure indicate several rivers, particularly the Amazon and Ucayali, are dispersal barriers for L. coronata. We also found evidence that genetic connectivity is elevated across several headwater regions, highlighting the importance of headwater gene flow for models of Amazonian diversification. The headwater region of the Ucayali River provided a notable exception to findings of headwater gene flow by harboring non-admixed populations of L. coronata on opposite sides of a < 1-km-wide river channel with a known dynamic history, suggesting that additional prezygotic barriers may be limiting gene flow in this region.


Asunto(s)
Passeriformes , Humanos , Animales , Passeriformes/genética , Brasil , Filogenia , Evolución Biológica , ADN Mitocondrial/genética , Ríos
4.
Lima; Perú. Defensoría del Pueblo; 1 ed; Dic. 2023. 380 p. ilus.(Informe Defensorial, 001-2023).
Monografía en Español | LIPECS | ID: biblio-1532225

RESUMEN

La presente publicación contiene los resultados de la supervisión efectuada, en el último trimestre del 2022, a microrredes de salud de 11 departamentos (Amazonas, Cajamarca, Cusco, Huánuco, Junín, Loreto, Madre de Dios, San Martín, Pasco, Puno, y Ucayali) que atienden a pueblos indígenas, habiéndose efectuado visitas de campo a los departamentos de Loreto y Amazonas. Asimismo, la supervisión de las dificultades y retos de los procesos de vacunación en las comunidades e impulsar el cumplimiento de las obligaciones del Estado en estas zonas a fin de cautelar el derecho a la salud de la población. Los resultados de la supervisión permiten afirmar que los problemas estructurales de los servicios de salud en las comunidades y localidades indígenas persisten, y continúan generando una vulneración sistemática a sus derechos. Así, se advierten carencias presupuestales y logísticas, la falta de disponibilidad de personal de salud, de equipos médicos, medicamentos y la ausencia de servicios públicos básicos. A ello, se suma la necesidad de que el servicio cuente con pertinencia cultural y lingüística para el adecuado relacionamiento con la población y combatir la desconfianza hacia el Estado, los hallazgos, conclusiones y recomendaciones que se presentan en este documento, están orientados a que el Estado peruano agote los máximos esfuerzos para atender los desafíos identificados y adopte mejoras estructurales del servicio de salud, lo que permitirá mejorar los procesos de vacunación regular en la población indígena a nivel nacional, a partir de la experiencia vivida durante el proceso de vacunación contra el COVID-19 en las comunidades indígenas


Asunto(s)
Atención Primaria de Salud
5.
Vive (El Alto) ; 6(18): 859-869, dic. 2023. ilus
Artículo en Español | LILACS | ID: biblio-1530588

RESUMEN

La desnutrición crónica se constituye en un problema de salud pública que afecta el bienestar de la población infantil. Objetivo. Analizar la situación de la desnutrición crónica y anemia infantil en Perú y las intervenciones de los programas sociales. Materiales y Métodos. Fue un estudio descriptivo cualitativo, de diseño de análisis de contenido. En la recolección de datos la técnica utilizada fue el análisis de documentos, el instrumento fue la matriz de análisis de documento y datos (MDD). Resultados. La desnutrición crónica desde el año 2007 hasta el 2022 ha mostrado un comportamiento de reducción favorable de 28.5% a 11.7%. Y la anemia desde el año 2007 hasta el año 2021 hubo una reducción de 56.8 % a 38.8%, y en el año 2022 fue de 42.4%. En la zona rural se encontró en 51.5%. Conclusiones. La situación de la desnutrición crónica y anemia infantil en Perú disminuyó en 11.7% al año 2022. Siendo la zona rural la más afectada. Los departamentos de Huancavelica, Loreto y Cajamarca ocupan los más altos porcentajes. El porcentaje de la anemia fue 42.4%, y la zona rural supera el 50%; encontrándose con mayor porcentaje los departamentos de Puno, Ucayali, Huancavelica y Loreto. Ello se afirma como problemas latentes y forma parte de los indicadores de la ODS. La intervención de los programas sociales a través de programas nutricionales ha tenido un financiamiento sostenido. Sin embargo, expertos evaluaron el programa chispitas, suplementación con hierro mostrando que no hay un efecto en la disminución de la desnutrición y anemia.


Chronic malnutrition is a public health problem that affects the well-being of the child population. Objective. To analyze the situation of chronic malnutrition and childhood anemia in Peru and the interventions of social programs. Materials and Methods. This was a qualitative descriptive study, with a content analysis design. The data collection technique used was document analysis, the instrument was the document and data analysis matrix (MDD). Results. Chronic malnutrition from 2007 to 2022 has shown a favorable reduction behavior from 28.5% to 11.7%. And anemia from 2007 to 2021 there was a reduction from 56.8% to 38.8%, and in 2022 it was 42.4%. In the rural area it was 51.5%. Conclusions. The situation of chronic malnutrition and child anemia in Peru decreased by 11.7% by the year 2022. The rural area is the most affected. The departments of Huancavelica, Loreto and Cajamarca have the highest percentages. The percentage of anemia was 42.4%, and the rural area exceeds 50%, with the highest percentages in the departments of Puno, Ucayali, Huancavelica and Loreto. This is affirmed as latent problems and is part of the SDG indicators. The intervention of social programs through nutritional programs has had sustained funding. However, experts evaluated the program "chispitas", iron supplementation, showing that there is no effect in reducing malnutrition and anemia.


A desnutrição crônica é um problema de saúde pública que afeta o bem-estar das crianças. Objetivo. Analisar a situação da desnutrição crônica e da anemia infantil no Peru e as intervenções dos programas sociais. Materiais e métodos. Este foi um estudo descritivo qualitativo, com um projeto de análise de conteúdo. A técnica de coleta de dados utilizada foi a análise de documentos e o instrumento foi a matriz de análise de documentos e dados (MDD). Resultados. A desnutrição crônica de 2007 a 2022 apresentou uma redução favorável de 28,5% para 11,7%. E a anemia, de 2007 a 2021, teve uma redução de 56,8% para 38,8%, e em 2022 foi de 42,4%. Na área rural, foi de 51,5%. Conclusões. A situação da desnutrição crônica e da anemia infantil no Peru diminuiu 11,7% até 2022. A área rural é a mais afetada. Os departamentos de Huancavelica, Loreto e Cajamarca têm as porcentagens mais altas. A porcentagem de anemia foi de 42,4%, e a área rural ultrapassa 50%, com as porcentagens mais altas nos departamentos de Puno, Ucayali, Huancavelica e Loreto. Isso é afirmado como um problema latente e faz parte dos indicadores dos ODS. A intervenção de programas sociais por meio de programas nutricionais teve um financiamento sustentado. No entanto, especialistas avaliaram o programa "chispitas", de suplementação de ferro, mostrando que não há efeito na redução da desnutrição e da anemia.


Asunto(s)
Humanos , Salud Pública
6.
J Fish Biol ; 2023 Dec 20.
Artículo en Inglés | MEDLINE | ID: mdl-38118436

RESUMEN

With 76 currently valid species, the bushynose catfish genus Ancistrus is the fourth most species-rich catfish genus, yet Ancistrus diversity remains underestimated, with many species still undescribed. This is especially true of the Peruvian Andean headwaters of the Amazon, which are rich in unnamed Ancistrus species but have received little recent taxonomic attention. We describe a distinctively striped new Ancistrus species from tributaries of the Palcazú River, in the Pachitea-Ucayali-Amazonas drainage basin. The new species differs from all congeners by having black, vermiculated lines covering the head and two to four distinct black, parallel, lateral body stripes from head to caudal fin (vs. body uniformly colored or with dark or light spots or blotches over head and body, or black vermiculate lines on flanks). The new species is the fifth valid species of Ancistrus described from the rich Ucayali River ichthyofauna. It has previously been recognized in the aquarium fish trade as L267.

7.
J Fish Biol ; 2023 Dec 27.
Artículo en Inglés | MEDLINE | ID: mdl-38149310

RESUMEN

Otocinclus cocama, a uniquely colored species of the loricariid catfish genus Otocinclus described solely from the type locality in the lower Ucayali River in northern Peru, is reported occurring in the Tigre River, a tributary to the Marañón River that drains a different section of the Andean Mountain range in the western Amazon. Both populations differ in the number of dark bars spanning the flanks of the body, and we investigated whether these morphotypes constitute distinct species. The body shapes of populations from the Tigre and Ucayali rivers were compared using geometric morphometrics. Although principal component analysis detected a broad overlap between populations, multivariate analysis of variance and linear driscriminat analysis revealed a subtle differentiation between the populations of the two hydrographic basins. Average body shape of the Ucayali River population tend to be slightly higher than that of the Tigre River, with the caudal peduncle stretched vertically in the Ucayali population. Multivariate regression of shape and centroid size revealed an allometric effect of 10.7% (p < 0.001), suggesting that the variation between Tigre and Ucayali populations was purely shape variation. Molecular data of coI, cytb, nd2, and 16S mitochondrial genes indicated a nucleotide diversity range from 0.001 to 0.003, and haplotypic diversity range from 0.600 ± 0.11 to 0.79 ± 0.07. The median-joining haplotype network for the concatenated matrix exhibited two divergent haplogroups related to the geographic area and separated by <10 mutational steps. The molecular species delimitation methods based on distance (automatic barcode gap discovery and assemble species by automatic partitioning) recovered two molecular lineages evolving independently, being one of the lineages formed by individuals from both populations. Tree-based methods (generalized mixed Yule coalescent and Bayesian implementation of the Poisson tree process) recovered similar topologies and supported single lineage recognition. Methods of molecular delimitation of species disclosed the high similarity between the two populations of Otocinclus cocama, further supported by the presence of old haplotypes common to both groups which could indicate that the populations still maintain gene flow. Although the morphological data reveal a subtle variation between both river basins, the molecular data suggest a weak population structuration based on hydrographic areas, but not different species lineages, therefore Otocinclus cocama is composed of a single lineage with two distinct morphotypes.

8.
Lima; Perú. Ministerio de Salud; Dic. 2023. 60 p. tab..
No convencional en Español | MINSAPERÚ, LIPECS | ID: biblio-1525083

RESUMEN

El documento contiene el plan para contribuir a mejorar la salud de los pueblos indígenas u originarios ante enfermedades prevalentes mediante el fortalecimiento de los servicios de salud con enfoque intercultural, en los departamentos de Loreto, San Martín, Madre de Dios, Ucayali, Amazonas, Cusco, Junín, Huánuco, Pasco, Cajamarca y Ayacucho.

9.
J Fish Biol ; 2023 Nov 29.
Artículo en Inglés | MEDLINE | ID: mdl-38018606

RESUMEN

A taxonomic revision of Sturisoma is presented. Individuals including both type and non-type specimens of all valid species were examined. Sturisoma was found to comprise 10 valid species: Sturisoma barbatum, Sturisoma brevirostre, Sturisoma graffini, Sturisoma guentheri, Sturisoma lyra, Sturisoma monopelte, Sturisoma nigrirostrum, Sturisoma reisi, Sturisoma rostratum, and Sturisoma tenuirostre. Furthermore, four new species are described: Sturisoma ghazziae, new species, from the Araguaia River, belonging to the Tocantins-Araguaia basin, Central Brazil; Sturisoma careirensia, new species, from the middle Amazon basin, Brazil; Sturisoma rapppydanielae, new species, from the Purus River, Amazon basin, Brazil; and Sturisoma defranciscoi, new species, from the Putumayo and Solimões rivers, upper Amazon basin, Colombia, and Brazil. Sturisoma robustum is confirmed as synonym of S. barbatum, species registered along the Paraguay/Parana/La Plata River basin in Argentina, Brazil, and Paraguay. New records were found for S. nigrirostrum as present in the upper Amazon basin, in the Yavari River, Brazil, in addition to its already known locality, the Ucayali River, Peru. The distribution of the type species of the genus S. rostratum is limited to the lower portion of the Amazon basin in the Araguaia, Maranhão, Mearim, Tapajós, and Tocantins rivers and its affluents, Brazil, in contrast to the assumed widespread distribution across the main basins of South America, as previously proposed for the species; the Mearim River is a new record for the species. Updated diagnoses and descriptions are offered for species of Sturisoma, in addition to distribution maps and an identification key for the species.

10.
J Ethnobiol Ethnomed ; 19(1): 45, 2023 Oct 19.
Artículo en Inglés | MEDLINE | ID: mdl-37858223

RESUMEN

In the Anthropocene, primate conservation can only take place when considering human culture, perspectives, and needs. Such approaches are increasingly important under the growing impact of anthropogenic activities and increasing number of threatened primates. The Amazon rainforest, rich in cultural and biological diversity, where indigenous people play a crucial role in primate conservation, provides ample opportunity to study human-primate interactions and the sociocultural context in which they occur. Human activities threaten the Amazon's fragile ecosystems and its primates, which play a key role in its maintenance and regeneration. This study focuses on one of the largest indigenous groups in the Peruvian Amazon: the Shipibo. Interviews and participant observation were used to investigate local perceptions of animal presence and depletion, food preferences, and how primates are incorporated into daily life and culture. Since time immemorial and still today, primates remain important in Shipibo culture, mythology, and subsistence. Local Shipibo participants consistently identified the presence of 13 species of primate. Primates were among the preferred species for consumption, pet keeping, and held a fundamental role in mythology, traditional knowledge, and storytelling. Large-bodied primates were often mentioned as being locally extinct, with reports and observations suggesting increasing consumption of smaller-bodied primates. Commonly perceived reasons for primate depletion include noise disturbance, hunting, and population growth, often in parallel. This study sheds light on the cultural context of an area rich in biodiversity, where primates, essential for ecological balance and integral to Shipibo lives and identity, are being depleted. We highlight the need for an inclusive ethnoprimatological approach to conserving primates and preserving indigenous heritage while improving local livelihoods.


Asunto(s)
Ecosistema , Ríos , Animales , Humanos , Perú , Primates , Conservación de los Recursos Naturales
11.
Lima; Perú. Ministerio de Salud. Escuela Nacional de Salud Pública; 1 ed; Jul. 2023. 139 p. ilus.
Monografía en Español | MINSAPERÚ, LILACS, LIPECS | ID: biblio-1516247

RESUMEN

La presente publicación, recoge la investigación de seis equipos de investigadores en las regiones de Arequipa, Ayacucho, Cusco, La Libertad, Lima Norte y Ucayali. Las investigaciones se hicieron con el apoyo de la Agencia Española de Cooperación Internacional para el Desarrollo - AECID, la colaboración de las autoridades de Salud y de investigadores de Universidades locales, de las seis regiones. Como parte de ello estimula equipos de investigadores en las regiones con temas vinculados a la solución de problemas en los servicios de salud del primer nivel de atención; temas como acceso al programa de tuberculosis, impacto de la vacunación contra el COVID-19, acceso a los servicios de la población de bajos recursos, evaluación de la calidad de servicios, son analizados por estos equipos regionales que concluyen en valiosas recomendaciones para el equipo de gestión regional


Asunto(s)
Salud Pública
12.
J Ethnobiol Ethnomed ; 19(1): 16, 2023 May 12.
Artículo en Inglés | MEDLINE | ID: mdl-37170108

RESUMEN

This study aims to document the diversity of medicinal plants used by the Cashinahua people (also known as Huni Kuin) of the Curanja River, as well as describe and compare their uses with pharmacological and phytochemical records from previously published studies. The ethnic has been studied to a limited extent from an ethnobotanical perspective. The study area is located in the Ucayali region, eastern Central Amazon, where ancestral knowledge is preserved due to the limited accessibility of the region. Between November 2010 and June 2015, a total of 11 months were spent on the survey, which included a short-term visit to complete voucher specimen collection and taxonomic identification. We conducted semi-structured interviews with 10 Cashinahua traditional healers and 10 midwives. Vernacular names, ethnomedicinal uses, plant parts used and forms of preparation and administration were recorded. Ethnopharmacological, pharmacological and phytochemical uses were checked through survey of the previously published papers indexed on Web of Science databases between 2018 and 2022. We obtained data on 467 plant taxa, among which we highlighted 79 species unreported or rarely cited for medicinal use or phytochemical analysis. These species were spread over 60 genera and 42 botanical families, with Acanthaceae being the most represented. Leaves were used the most frequently (93.56%). Among the 79 species, the most reported therapeutic activities involved pregnancy and birth disorders (13.84%), followed by poisonings, infections and infestations. The predominant application form was external (87%). Our study indicates that there are locally valuable species that have not yet been studied for their medical potential.


Asunto(s)
Plantas Medicinales , Humanos , Practicantes de la Medicina Tradicional , Fitoterapia , Perú , Conocimientos, Actitudes y Práctica en Salud , Etnobotánica
13.
Ampersand (Oxford) ; 10: 100118, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37155502

RESUMEN

When the COVID (SARS-V2) pandemic swept across the world, it impacted Indigenous communities more than others. This is due to a variety of reasons: socioeconomic injustice and racialization, lack of access to equitable healthcare, and linguistic discrimination. As a result, several communities and community types demonstrated this effect when perceptions of inferences or other COVID-related information were measured. This paper reports on a participatory collaborative study with two Indigenous communities in rural Peru-ten Quechua-speaking communities in Southern Cuzco and three Shipibo-speaking communities in Ucayali regions. We investigate the communities' level of preparedness for the crisis by eliciting answers based on the World Health Organization COVID 'MythBusters' in a form of a semi-structured interview. Interviews were transcribed, translated, and analyzed in search of the effect of three variables: gender (male/female), language group (Shipibo/Quechua), and proficiency in the Indigenous language (from 0 to 4). Data reveal that all three variables have some effect on the target comprehension of COVID-related messages. Additionally, we explore other possible explanations.

14.
BMC Urol ; 23(1): 51, 2023 Mar 29.
Artículo en Inglés | MEDLINE | ID: mdl-36991482

RESUMEN

BACKGROUND: The incidence of kidney cancer has been increasing worldwide, with variable patterns in mortality due to improved diagnostic techniques and increased survival. The mortality rates, geographical distribution and trends of kidney cancer in South America remain poorly explored. This study aims to illustrate mortality by kidney cancer in Peru. METHODS: A secondary data analysis of the Deceased Registry of the Peruvian Ministry of Health database, from 2008 to 2019 was conducted. Data for kidney cancer deaths were collected from health facilities distributed throughout the country. We estimated age-standardized mortality rates (ASMR) per 100,000 persons and provided an overview of trends from 2008 to 2019. A cluster map shows the relationships among 3 regions. RESULTS: A total of 4221 deaths by kidney cancer were reported in Peru between 2008 and 2019. ASMR for Peruvian men ranged from 1.15 to 2008 to 1.87 in 2019, and from 0.68 to 2008 to 0.82 in 2019 in women. The mortality rates by kidney cancer rose in most regions, although they were not significant. Callao and Lambayeque provinces reported the highest mortality rates. The rainforest provinces had a positive spatial autocorrelation and significant clustering (p < 0.05) with the lowest rates in Loreto and Ucayali. CONCLUSION: Mortality by kidney cancer has increased in Peru, being a trend that disproportionally affects more men than women. While the coast, especially Callao and Lambayeque, present the highest kidney cancer mortality rates, the rainforest has the lowest rates, especially among women. Lack of diagnosis and reporting systems may confound these results.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Masculino , Humanos , Femenino , Perú/epidemiología , Incidencia , Sistema de Registros
15.
Front Vet Sci ; 10: 1340428, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38292135

RESUMEN

Introduction: Extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae are on the WHO priority pathogens list because they are associated with high mortality, health-care burden, and antimicrobial resistance (AMR), a serious problem that threatens global public health and should be addressed through the One Health approach. Non-human primates (NHP) have a high risk of acquiring these antibiotic-resistant bacteria due to their close phylogenetic relationship with humans and increased anthropogenic activities in their natural environments. This study aimed to detect and analyze the genomes of ESBL-producing Escherichia coli (ESBL-producing E. coli) in NHP from the Peruvian Amazon. Materials and methods: We collected a total of 119 fecal samples from semi-captive Saguinus labiatus, Saguinus mystax, and Saimiri boliviensis, and captive Ateles chamek, Cebus unicolor, Lagothrix lagothricha, and Sapajus apella in the Loreto and Ucayali regions, respectively. Subsequently, we isolated and identified E. coli strains by microbiological methods, detected ESBL-producing E. coli through antimicrobial susceptibility tests following CLSI guidelines, and analyzed their genomes using previously described genomic methods. Results: We detected that 7.07% (7/99) of E. coli strains: 5.45% (3/55) from Loreto and 9.09% (4/44) from Ucayali, expressed ESBL phenotype. Genomic analysis revealed the presence of high-risk pandemic clones, such as ST10 and ST117, carrying a broad resistome to relevant antibiotics, including three blaCTX-M variants: blaCTX-M-15, blaCTX-M-55, and blaCTX-M-65. Phylogenomic analysis confirmed the clonal relatedness of high-risk lineages circulating at the human-NHP interface. Additionally, two ESBL-producing E. coli strains were identified as EPEC (eae) and ExPEC according to their virulence profiles, and one more presented a hypermucoviscous phenotype. Discussion: We report the detection and genomic analysis of seven ESBL-producing E. coli strains carrying broad resistome and virulence factors in NHP from two regions of the Peruvian Amazon. Some of these strains are closely related to high-risk pandemic lineages previously reported in humans and domestic animals, highlighting the negative impact of anthropogenic activities on Amazonian wildlife. To our knowledge, this is the first documentation of ESBL-producing E. coli in NHP from the Amazon, underscoring the importance of adopting the One Health approach to AMR surveillance and minimizing the potential transmission risk of antibiotic-resistant bacteria at the human-NHP interface.

16.
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1437326

RESUMEN

The Yarinacocha lake is an emblematic ecosystem of the Peruvian Amazon, representing the main point of fish landing and a tourist attraction in the city of Pucallpa. The wide fauna diversity in this area has made it the target of various studies, although for fish species most of them were focused on commercial species. In this work, we carried out the first ichthyofauna species inventory of the Yarinacocha lake, sampling throughout the entire lake during the rainy and dry seasons and considering also all previously recorded species deposited in the Ichthyological Collection of the MUSM with the same locality. A total of 164 fish species were recorded, representing 10 orders (plus Eupercaria), 34 families and 116 genera. Characiformes was the order with more species (68 spp., 41.5%) followed by Siluriformes (59 spp., 36%), Cichliformes (17 spp., 10.5%), and Gymnotiformes (8 spp., 4.9%). The most highly represented families, including almost 55.5% of the total diversity obtained, were Characidae (23 spp., 14%), followed by Cichlidae (17 spp., 10.4%), Loricariidae (14 spp., 8.5%), Pimelodidae (13 spp., 7.9%), Doradidae (13 spp., 7.4%) and Anostomidae (12 spp., 7.3%). From the total fish species recorded in this study, only 22 are considered protected species following the IUCN criteria and 109 species have commercial importance, including 90 ornamental species (54.8%). Our results contribute to the knowledge of the ichthyofauna of the Yarinacocha lake and can be used as a starting point for its conservation and sustainable management over time.


O lago Yarinacocha é um ecossistema emblemático da Amazônia peruana, representando o principal ponto de desembarque de peixes e também uma atração turística da cidade de Pucallpa. A grande diversidade faunística nesta área a tornou alvo de vários estudos, embora para as espécies de peixes a maioria deles tenha sido focada em espécies comerciais. Neste trabalho, realizamos o primeiro inventário da ictiofauna do lago Yarinacocha, amostrando todo o lago durante as estações chuvosa e seca, e também considerando todas as espécies depositadas na Coleção Ictiológica do MUSM dessa localidade. Um total de 164 espécies de peixes foram registradas, representando 10 ordens (mais Eupercaria), 34 famílias e 116 gêneros. Characiformes foi a ordem com mais espécies (68 espécies, 41,5%), seguida por Siluriformes (59 espécies, 36%), Cichliformes (17 espécies, 10,5%) e Gymnotiformes (8 espécies, 4,9%). As famílias mais representadas, incluindo quase 55,5% da diversidade total obtida, foram Characidae (23 spp., 14%), seguido por Cichlidae (17 spp., 10,4%), Loricariidae (14 spp., 8,5%), Pimelodidae (13 spp., 7,9%), Doradidae (13 spp., 7,4%) e Anostomidae (12 spp., 7,3%). Do total de espécies de peixes registradas neste estudo, apenas 22 são consideradas espécies protegidas seguindo os critérios da IUCN e 109 espécies têm importância comercial, incluindo 90 espécies ornamentais (54,8%). Nossos resultados contribuem para o conhecimento da ictiofauna do lago Yarinacocha e podem ser utilizados como ponto de partida para sua conservação e manejo sustentável ao longo do tempo.

17.
Artículo en Español | LILACS-Express | LILACS | ID: biblio-1537044

RESUMEN

El cultivo de cacao en el trópico peruano presenta bajos rendimientos, lo que exige buscar alternativas para aumentar la producción. Frente a esta situación, los estudios geoespaciales facilitan el diagnóstico de fertilidad y la aplicación de planes de fertilización. Por lo tanto, se evaluó la distribución espacial de indicadores fisicoquímicos y calidad del suelo en Padre Abad, región Ucayali, Perú. Se evaluaron indicadores fisicoquímicos y la calidad del suelo y se sometieron al análisis geoestadístico, a través del interpolador Kriging, encontrándose coeficientes de variación bajos para arcilla, pH y potasio K y medios para arena, limo, materia orgánica (MO), nitrógeno (N), fósforo (P), potasio (K+), calcio (Ca2+), magnesio (Mg2+), aluminio (Al3+), capacidad de intercambio de cationes (CIC), saturación de bases (SB), acidez cambiable (AC) y saturación de aluminio (SAl). La calidad del suelo varió entre baja a muy baja, con una distribución espacial de 52,24 y 47,76 %. El análisis de componentes principales encontró significancia para arena, limo, MO, N, K+, Al3+, CIC, %AC, %BC y %SAl, todos presentan variación espacial, según su nivel de fertilidad, excepto K+. Los modelos de interpolación con mejores ajustes fue el exponencial y lineal con dependencia espacial fuerte para arena, limo y K, moderada para MO, N, Al, CIC, %SAl e índice de calidad del suelo y débil para %BC y %AC, con una eficiencia de predicción confiable. Se encontró alta variabilidad espacial con valores medios de los diferentes indicadores de fertilidad bajos, no favorables para el desarrollo del cultivo de cacao.


Cocoa cultivation in the Peruvian tropics has low yields, which requires seeking alternatives to increase the production. Faced with this situation, geospatial studies facilitate the diagnosis of fertility and the efficient application of fertilization plans. Therefore, the spatial distribution of physicochemical indicators and soil quality in Padre Abad, Ucayali region, Peru were evaluated. Physicochemical indicators and soil quality were evaluated and subjected to geostatistical analysis through the Kriging interpolator, finding low coefficients of variation for clay, pH and potassium (K+), and medium for sand, silt, organic matter (OM), nitrogen (N), phosphorus (P), potassium (K+), calcium (Ca2+), magnesium (Mg2+), aluminum (Al3+), cation exchange capacity (CEC), base saturation (BS), exchangeable acid (EA) and aluminum saturation (AlS). Soil quality ranged from low to very low quality with a spatial distribution of 52.24 % and 47.76 % respectively. Principal component analysis found significance for sand, silt, OM, N, K+, Al3+, CEC, %EC, %BS and %AlS, all showing spatial variation according to their fertility level, except K+. The interpolation models with best fits were the exponential and linear with strong spatial dependence for sand, silt and K, moderate for MO, N, Al, CEC, %AlS and soil quality index (SQI), and weak for %BS and %EC, with reliable prediction efficiency. The research found high spatial variability with low mean values of the different fertility indicators, not favorable for cocoa crop development.

18.
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1440948

RESUMEN

Introduction: COVID-19 has a significant impact on the hematopoietic system and hemostasis. Leukocytosis, lymphopenia, and thrombocytopenia are associated with increased severity and even death in COVID-19 cases. Objective: The aim is to examine the laboratory results of COVID-19 patients from a hospital in the Peruvian Amazon and their clinical prognosis. Material and Methods: An analytical cross-sectional study was carried out whose purpose was to identify the laboratory tests of patients with COVID-19 and mortality in a hospital in Ucayali, Peru during the period from March 13 to May 9, 2020, selecting a total of 127 with Covid-19. Mean and the standard deviation was described for age, leukocytes, neutrophils, platelets, RDW-SD; median and interquartile range for the variables lymphocyte, RN / L, fibrinogen, CRP, D-dimer, DHL, hematocrit, monocytes, eosinophils. Results: No differences were observed in this population regarding death and sex (OR: 1.31; 95% CI 0.92 to 1.87), however, it was observed that, for each one-year increase, the probability of death increased by 4% (PR: 1.04, 95% CI 1.03 to 1.05). The IRR (Incidence Risk Ratio) analysis for the numerical variables showed results strongly associated with hematological values such as Leukocytes (scaled by 2500 units) (IRR: 1.08, 95% CI 1.03 to 1.13), neutrophils (scaled by 2500 units) (IRR: 1.08; 95% CI 1.03 to 1.13), on the contrary, it is observed that the increase of 1000 units in lymphocytes, the probability of dying decreased by 48% (IRR: 0.52; 95% CI 0.38 to 071). Conclusions: Parameters such as leukocytes,neutrophils and D-dimer were statistically much higher in patients who died.


Introducción: COVID-19 tiene un impacto significativo en el sistema hematopoyético y la hemostasia. La leucocitosis, la linfopenia y la trombocitopenia se asocian con una mayor gravedad e incluso la muerte en los casos de COVID-19. Objetivo: examinar los resultados de laboratorio de pacientes con COVID-19 de un hospital de la Amazonía peruana y su pronóstico clínico. Material y métodos: Se realizó un estudio transversal analítico cuyo propósito fue identificar las pruebas de laboratorio de pacientes con COVID-19 y mortalidad en un hospital de Ucayali, Perú durante el periodo del 13 de marzo al 9 de mayo del 2020, seleccionando un total de 127 con COVID-19. Se describió la media y la desviación estándar para edad, leucocitos, neutrófilos, plaquetas, RDW-SD; mediana y rango intercuartílico para las variables linfocito, RN/L, fibrinógeno, PCR, dímero D, DHL, hematocrito, monocitos, eosinófilos. Resultados: No se observaron diferencias en esta población en cuanto a muerte y sexo (OR: 1,31; IC 95% 0,92 a 1,87), sin embargo, se observó que, por cada aumento de un año, la probabilidad de muerte aumentaba un 4% (RP: 1,04). , IC del 95%: 1,03 a 1,05). El análisis de RIR (Razón de incidencia de riesgos) para las variables numéricas mostró resultados fuertemente asociados con valores hematológicos como Leucocitos (escala de 2500 unidades) (RRI: 1.08, 95% CI 1.03 a 1.13), neutrófilos (escala de 2500 unidades) (RRI: 1.08; IC 95% 1.03 a 1.13), por el contrario, se observa que al aumento de 1000 unidades en linfocitos, la probabilidad de morir disminuyó en un 48% (TIR: 0.52; IC 95% 0.38 a 071). Conclusiones: Parámetros tales como los leucocitos, los neutrófilos y el dímero D fueron estadísticamente mucho más altos en los pacientes que fallecieron.

19.
Rev. peru. biol. (Impr.) ; 29(4)oct. 2022.
Artículo en Español | LILACS-Express | LILACS | ID: biblio-1424290

RESUMEN

En este trabajo se presenta una lista actualizada de los registros de especies de peces de la cuenca del río Ucayali, Perú, provenientes de datos publicados y no publicados. Los resultados muestran que la cuenca del Ucayali presenta una ictiofauna rica y diversificada con el registro de 734 especies distribuidas en 15 órdenes, 49 familias y 292 géneros. La Ictiofauna está compuesta por peces miniatura (4%), peces pequeños (39%), medianos (41%), grandes (13%) y gigantes (3%). Los grupos dominantes son los Characiformes (312 especies, 43.0 %), Siluriformes (270 especies, 36.8%), Gymnotiformes (51 especies, 6.9%), y Cichliformes (50 especies, 6.8%). Parte de la ictiofauna es compartida con cuencas adyacentes como Marañón, y Amazonas peruano, principalmente en la región de confluencia, lo que contribuye a la notable diversidad de peces en la cuenca. Se observó una alta riqueza de especies con distribución restricta de los géneros Orestias, Astroblepus, Trichomycterus, Hemibrycon, entre otras especies, que ocurren en la región de cabeceras. Estimativos de riqueza de especies considerando su distribución por cada 100 m de altitud, indican que la cuenca del Ucayali esta subestimada, esperándose encontrar hasta 1125 especies. Los resultados aquí presentados son antecedentes que coadyuvaran a la toma de decisiones con fines de conservación y desarrollo sustentable en la región amazónica.


This study presents an updated checklists of the fish species recorded in the Ucayali River basin, Peru, from published and unpublished data. Ucayali River basin shows a rich and diversified ichthyofauna, with 734 species distributed in 15 orders, 49 families and 292 genera. It is composed by miniature fishes (4 %, < 2.6 cm of standard length), small fishes (39 %), medium fishes (41 %), large fishes (13 %) and giants (3 %). The dominant groups are Characiformes (312 species, 43.0 %), Siluriformes (270 species, 36.8 %), Gymnotiformes (51 species, 6.9 %) and Cichliformes (50 species, 6.8 %). Part of the ichthyofauna is shared with the adjacent basins as Marañón and Amazon, mainly in the confluence area, which contribute to the highest diversity of fishes in the Ucayali basin. High diversity of fishes with restricted distribution was observed, among them Orestias, Astroblepus, Trichomycterus, Hemibrycon genera that occur in the headwaters. Estimates of species richness considering their distribution per 100 m of altitude, show that the Ucayali basin is underestimated, expecting to find up to 1125 species. The results presented here are background information that will contribute to decision-making for conservation and sustainable development purposes in the Amazon region.

20.
Environ Monit Assess ; 194(11): 817, 2022 Sep 22.
Artículo en Inglés | MEDLINE | ID: mdl-36131105

RESUMEN

The Peruvian Amazon plain has abundant natural resources and is home to great biodiversity, which makes it an area with high economic potential. However, the use of its resources through various activities has contributed to the release of heavy metals (HMs) into its soils, generating severe pollution problems which have mainly affected the health of local populations and their ecosystems. Currently, there are no comprehensive studies that have identified the specific sources of contamination by HMs in the soils of this part of the Peruvian territory. In this sense, this research aims to identify the possible sources of contamination by HMs in the soils of the Peruvian Amazon plain to focus efforts on the establishment of adequate measures for the protection of the health of people and the ecosystem. In the present study, samples of topsoils (0-20 cm depth) and subsoils (100-150 cm depth) were collected for the analysis of 11 HMs (Co, Cr, Cu, Fe, Mn, Ni, Pb, V, Zn, Be, and Hg) in 48 sites located in four regions of the Peruvian Amazon plain (Loreto, Amazonas, San Martín, and Ucayali), over the year 2019. The enrichment factor and geoaccumulation index were applied to assess contamination levels of HMs. The results indicated that topsoils and subsoils presented a greater enrichment by the elements Be and Pb, and were classified as moderately contaminated. Likewise, the integral analysis of these indexes together with principal component analysis, hierarchical cluster analysis, correlation analysis, and coefficient of variation allowed the identification of potential sources of contamination by HMs. As a result, Fe, Co, Zn, Ni, V, and Cr were associated with natural or lithogenic sources (parent material, crude oil deposits, and organic matter decomposition). Hg was attributed to anthropogenic sources (illegal gold mining, atmospheric deposition, and vehicle emissions). Be, Pb, Cu, and Mn originated from natural sources (parent material, crude oil deposits, decomposition of organic matter, and forest fires) and anthropogenic (areas degraded by solid waste, illegal gold mining, agriculture, and hydrocarbons). These findings provide essential information to establish regulations and prevent and control HM contamination in soils of the Peruvian Amazon plain.


Asunto(s)
Mercurio , Metales Pesados , Petróleo , Contaminantes del Suelo , China , Ecosistema , Monitoreo del Ambiente/métodos , Oro/análisis , Humanos , Plomo/análisis , Mercurio/análisis , Metales Pesados/análisis , Perú , Petróleo/análisis , Medición de Riesgo , Suelo , Contaminantes del Suelo/análisis , Residuos Sólidos/análisis , Emisiones de Vehículos/análisis
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