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1.
Primates ; 65(2): 115-124, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38170321

RESUMO

Studies of food preferences in captive primates have so far mainly been restricted to frugivorous species. It was therefore the aim of the present study to assess the occurrence of spontaneous food preferences in a mainly folivorous primate, the captive Southern brown howler monkey, and to analyze whether these preferences correlate with nutrient composition. Using a two-alternative choice test, we presented ten male and five female adult Alouatta guariba clamitans with all possible binary combinations of ten types of food that are part of their diet in captivity and recorded their choice behavior. We found the howler monkeys to display the following rank order of preference: banana > mango > watermelon > papaya > beetroot > apple > pear > orange > cucumber > tomato. This preference ranking significantly and positively correlated with the total carbohydrate content and with the sucrose content of the food items. We also found significant positive correlations between the food preference ranking and the content of the minerals copper and magnesium. Male and female howler monkeys did not differ significantly in their food preference rankings. These results suggest this howler monkeys under human care are not opportunistic, but selective feeders with regard to maximizing their net gain of energy as only the content of carbohydrates, but not the contents of total energy, proteins, or lipids significantly correlated with the displayed food preferences. Thus, the food preferences of this primate are similar to those reported in several species of frugivorous primates tested with cultivated fruits and vegetables.


Assuntos
Alouatta , Preferências Alimentares , Humanos , Animais , Feminino , Masculino , Haplorrinos , Nutrientes
2.
Front Cell Infect Microbiol ; 13: 1169552, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37829607

RESUMO

Introduction: Zoonotic transmission is a challenge for the control and elimination of malaria. It has been recorded in the Atlantic Forest, outside the Amazon which is the endemic region in Brazil. However, only very few studies have assessed the antibody response, especially of IgM antibodies, in Neotropical primates (NP). Therefore, in order to contribute to a better understanding of the immune response in different hosts and facilitate the identification of potential reservoirs, in this study, naturally acquired IgM antibody responses against Plasmodium antigens were evaluated, for the first time, in NP from the Atlantic Forest. Methods: The study was carried out using 154 NP samples from three different areas of the Atlantic Forest. IgM antibodies against peptides of the circumsporozoite protein (CSP) from different Plasmodium species and different erythrocytic stage antigens were detected by ELISA. Results: Fifty-nine percent of NP had IgM antibodies against at least one CSP peptide and 87% against at least one Plasmodium vivax erythrocytic stage antigen. Levels of antibodies against PvAMA-1 were the highest compared to the other antigens. All families of NP showed IgM antibodies against CSP peptides, and, most strikingly, against erythrocytic stage antigens. Generalized linear models demonstrated that IgM positivity against PvCSP and PvAMA-1 was associated with PCR-detectable blood-stage malaria infection and the host being free-living. Interestingly, animals with IgM against both PvCSP and PvAMA-1 were 4.7 times more likely to be PCR positive than animals that did not have IgM for these two antigens simultaneously. Discussion: IgM antibodies against different Plasmodium spp. antigens are present in NP from the Atlantic Forest. High seroprevalence and antibody levels against blood-stage antigens were observed, which had a significant association with molecular evidence of infection. IgM antibodies against CSP and AMA-1 may be used as a potential marker for the identification of NP infected with Plasmodium, which are reservoirs of malaria in the Brazilian Atlantic Forest.


Assuntos
Malária , Plasmodium , Animais , Brasil/epidemiologia , Formação de Anticorpos , Proteínas de Protozoários , Imunoglobulina M , Estudos Soroepidemiológicos , Antígenos de Protozoários , Malária/veterinária , Primatas , Florestas , Anticorpos Antiprotozoários , Peptídeos , Plasmodium vivax
3.
Malar J ; 22(1): 170, 2023 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-37268984

RESUMO

BACKGROUND: Plasmodium species of non-human primates (NHP) are of great interest because they can naturally infect humans. Plasmodium simium, a parasite restricted to the Brazilian Atlantic Forest, was recently shown to cause a zoonotic outbreak in the state of Rio de Janeiro. The potential of NHP to act as reservoirs of Plasmodium infection presents a challenge for malaria elimination, as NHP will contribute to the persistence of the parasite. The aim of the current study was to identify and quantify gametocytes in NHP naturally-infected by P. simium. METHODS: Whole blood samples from 35 NHP were used in quantitative reverse transcription PCR (RT-qPCR) assays targeting 18S rRNA, Pss25 and Pss48/45 malaria parasite transcripts. Absolute quantification was performed in positive samples for 18S rRNA and Pss25 targets. Linear regression was used to compare the quantification cycle (Cq) and the Spearman's rank correlation coefficient was used to assess the correlation between the copy numbers of 18S rRNA and Pss25 transcripts. The number of gametocytes/µL was calculated by applying a conversion factor of 4.17 Pss25 transcript copies per gametocyte. RESULTS: Overall, 87.5% of the 26 samples, previously diagnosed as P. simium, were positive for 18S rRNA transcript amplification, of which 13 samples (62%) were positive for Pss25 transcript amplification and 7 samples (54%) were also positive for Pss48/45 transcript. A strong positive correlation was identified between the Cq of the 18S rRNA and Pss25 and between the Pss25 and Pss48/45 transcripts. The 18S rRNA and Pss25 transcripts had an average of 1665.88 and 3.07 copies/µL, respectively. A positive correlation was observed between the copy number of Pss25 and 18S rRNA transcripts. Almost all gametocyte carriers exhibited low numbers of gametocytes (< 1/µL), with only one howler monkey having 5.8 gametocytes/µL. CONCLUSIONS: For the first time, a molecular detection of P. simium gametocytes in the blood of naturally-infected brown howler monkeys (Alouatta guariba clamitans) was reported here, providing evidence that they are likely to be infectious and transmit P. simium infection, and, therefore, may act as a reservoir of malaria infection for humans in the Brazilian Atlantic Forest.


Assuntos
Malária , Plasmodium , Animais , Humanos , RNA Ribossômico 18S/genética , Brasil/epidemiologia , Plasmodium/genética , Malária/epidemiologia , Malária/veterinária , Malária/parasitologia , Primatas/genética , Florestas , Plasmodium falciparum/genética
4.
BMC Biol ; 19(1): 219, 2021 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-34592986

RESUMO

BACKGROUND: Plasmodium simium, a malaria parasite of non-human primates (NHP), was recently shown to cause zoonotic infections in humans in Brazil. We sequenced the P. simium genome to investigate its evolutionary history and to identify any genetic adaptions that may underlie the ability of this parasite to switch between host species. RESULTS: Phylogenetic analyses based on whole genome sequences of P. simium from humans and NHPs reveals that P. simium is monophyletic within the broader diversity of South American Plasmodium vivax, suggesting P. simium first infected NHPs as a result of a host switch of P. vivax from humans. The P. simium isolates show the closest relationship to Mexican P. vivax isolates. Analysis of erythrocyte invasion genes reveals differences between P. vivax and P. simium, including large deletions in the Duffy-binding protein 1 (DBP1) and reticulocyte-binding protein 2a genes of P. simium. Analysis of P. simium isolated from NHPs and humans revealed a deletion of 38 amino acids in DBP1 present in all human-derived isolates, whereas NHP isolates were multi-allelic. CONCLUSIONS: Analysis of the P. simium genome confirmed a close phylogenetic relationship between P. simium and P. vivax, and suggests a very recent American origin for P. simium. The presence of the DBP1 deletion in all human-derived isolates tested suggests that this deletion, in combination with other genetic changes in P. simium, may facilitate the invasion of human red blood cells and may explain, at least in part, the basis of the recent zoonotic infections.


Assuntos
Malária , Plasmodium , Animais , Proteínas de Transporte , Malária/veterinária , Filogenia , Plasmodium/genética , Primatas , Zoonoses
5.
Front Cell Infect Microbiol ; 11: 678996, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34055672

RESUMO

Human malaria due to zoonotic transmission has been recorded in the Atlantic Forest, an extra-Amazonian area in Brazil, which are a challenge for malaria control. Naturally acquired humoral immune response against pre-erythrocytic and erythrocytic antigens of Neotropical primates (NP) was evaluated here to improve the knowledge about the exposure of those animals to the malaria transmission and support the identification of the potential reservoirs of the disease in the Atlantic Forest. Blood samples of 154 monkeys from three areas of the Atlantic Forest were used to identify IgG antibodies against peptides of the repeat region of the major pre-erythrocytic antigen, the circumsporozoite protein (CSP), of Plasmodium vivax (PvCSP), Plasmodium brasilianum/Plasmodium malariae (Pb/PmCSP), and Plasmodium falciparum (PfCSP) by ELISA. Antibodies against erythrocytic recombinant antigens of P. vivax, Apical membrane antigen 1 (PvAMA-1), Erythrocyte binding protein 2 (PvEBP-2) and domain II of Duffy binding protein (PvDBPII) were also evaluated. Parameters, such as age, sex, PCR positivity, and captivity, potentially associated with humoral immune response were analyzed. Eighty-five percent of NP had antibodies against at least one CSP peptide, and 76% against at least one P. vivax erythrocytic antigen. A high percentage of adults compared to non-adults were seropositive and showed increased antibody levels. Neotropical primates with PCR positive for P. simium had a significantly higher frequency of positivity rate for immune response against PvEBP-2, PvDBPII and also higher antibody levels against PvDBPII, compared to PCR negative NPs for this species. Monkeys with PCR positive for P. brasilianum/P. malariae showed higher frequency of seropositivity and antibody levels against Pb/PmCSP. Levels of antibodies against Pb/PmCSP, PvEBP-2 and PvDBPII were higher in free-living than in captive monkeys from the same area. All Platyrrhine families showed antibodies against CSP peptides, however not all showed IgG against erythrocytic antigens. These findings showed a high prevalence of naturally acquired antibodies against CSP repeats in all studied areas, suggesting an intense exposure to infected-mosquitoes bites of NP from all families. However, mainly monkeys of Atelidae family showed antibodies against P. vivax erythrocytic antigens, suggesting blood infection, which might serve as potential reservoirs of malaria in the Atlantic Forest.


Assuntos
Malária , Parasitos , Plasmodium , Animais , Anticorpos Antiprotozoários , Antígenos de Protozoários , Brasil , Eritrócitos , Florestas , Imunidade Humoral , Malária/veterinária , Plasmodium vivax , Primatas , Proteínas de Protozoários
6.
Mem Inst Oswaldo Cruz ; 114: e190210, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32022168

RESUMO

BACKGROUND: The influence of Plasmodium spp. infection in the health of Southern brown howler monkey, Alouatta guariba clamitans, the main reservoir of malaria in the Atlantic Forest, is still unknown. OBJECTIVES: The aim of this study was to investigate the positivity rate of Plasmodium infection in free-living howler monkeys in an Atlantic Forest fragment in Joinville/SC and to associate the infection with clinical, morphometrical, haematological and biochemical alterations. METHODS: Molecular diagnosis of Plasmodium infection in the captured monkeys was performed by Nested-polymerase chain reaction (PCR) (18S rRNA and coxI). Haematological and biochemical parameters were compared among infected and uninfected monkeys; clinical and morphometrical parameters were also compared. FINDINGS: The positivity rate of Plasmodium infection was 70% among forty captured animals, the highest reported for neotropical primates. None statistical differences were detected in the clinical parameters, and morphometric measures comparing infected and uninfected groups. The main significant alteration was the higher alanine aminotransferase (ALT) levels in infected compared to uninfected monkeys. MAIN CONCLUSIONS: Therefore, Plasmodium infection in howler monkeys may causes haematological/biochemical alterations which might suggest hepatic impairment. Moreover, infection must be monitored for the eco-epidemiological surveillance of malaria in the Atlantic Forest and during primate conservation program that involves the animal movement, such as translocations.


Assuntos
Alouatta/parasitologia , Reservatórios de Doenças/parasitologia , Malária/veterinária , Doenças dos Macacos/parasitologia , Alouatta/sangue , Animais , Animais Selvagens , Brasil/epidemiologia , Feminino , Malária/sangue , Malária/epidemiologia , Masculino , Doenças dos Macacos/sangue , Doenças dos Macacos/epidemiologia
7.
Primates ; 61(2): 169-174, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31832889

RESUMO

Conservation behavior involves the application of general principles of animal behavior for solving conservation problems. In primates, adoption of infants has been reported in several species and consists of an individual other than the biological parents taking primary care of them. Based on cases of adoption reported in howler monkeys (genus Alouatta), in the present study we facilitated the adoption of an orphaned and temporarily captive male infant by an unrelated adult female black-and-gold howler monkey (A. caraya), in the wild. The adoption process involved presenting the orphaned infant, inside a cage, to the female in the forest fragment that she occupied. We recorded the interactions between the individuals, and decided to open the cage. The female became the sole caregiver of the orphan, providing him with protection, transportation, and feeding, although she did not nurse him. The follow-up of these same individuals between 2006 and 2007 confirmed the success of the adoption. These findings indicate that carefully managed adoption can be a possible management strategy for the conservation and the welfare of howler monkeys in both nature and captivity.


Assuntos
Alouatta caraya/fisiologia , Comportamento Animal , Animais , Brasil , Conservação dos Recursos Naturais , Feminino , Masculino , Comportamento Social
8.
J Med Primatol ; 49(2): 65-70, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31885097

RESUMO

BACKGROUND: Non-human primates (NHPs) are susceptible to dogs' attacks, events that may cause muscle damage along with stress, and could be in some extent compatible with capture myopathy, a syndrome that results in myoglobinuria and renal damage. METHODS: We aimed to evaluate by histopathology pre-existing lesions and subsequent sequelae related to dogs' attacks, acute tubular necrosis (ATN) and myoglobinuria, as well as the usefulness of Pearls Stain and IHC to diagnose it. Histopathology was performed in available organs, and sections of kidney submitted to Prussian blue stain and myoglobin immunohistochemistry. RESULTS: During January 2014-June 2016, 16/145 (11%) of NHPs received by Adolfo Lutz Institute, Brazil were reported as attacked by dogs. A high frequency of young and debilitated animals was found. Myoglobinuria was observed in more than half animals (9/16; 56.2%), from which (5/9; 55.5%) presented ATN. CONCLUSIONS: Kidney lesions are plausible findings in NHPs attacked by dogs.


Assuntos
Alouatta , Mordeduras e Picadas/veterinária , Callithrix , Necrose Tubular Aguda/veterinária , Doenças dos Macacos/patologia , Mioglobinúria/veterinária , Fatores Etários , Animais , Mordeduras e Picadas/patologia , Mordeduras e Picadas/fisiopatologia , Brasil , Cães , Feminino , Rim/patologia , Necrose Tubular Aguda/diagnóstico , Necrose Tubular Aguda/patologia , Masculino , Doenças dos Macacos/diagnóstico , Mioglobinúria/diagnóstico , Mioglobinúria/patologia , Fatores Sexuais
10.
J Med Primatol ; 48(6): 313-319, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31219625

RESUMO

BACKGROUND: Physiological values reflect the health condition and responses of individuals to handling in captivity. The aim of this study was to establish hematological and serum biochemistry parameters of clinically healthy animals of the Alouatta guariba clamitans subspecies. METHODS: We collected blood samples from adult males and females kept at the Center for Biological Research of Indaial after chemical containment with 3.9 mg/kg of tiletamine hydrochloride and zolazepam. RESULTS: Significant differences between males and females were found in the levels of erythrocytes, hemoglobin, hematocrit, lymphocytes, neutrophils, platelets, mean corpuscular hemoglobin concentration (MCHC), and gamma-glutamyltranspeptidase (GGT). CONCLUSIONS: Our results suggest the existence of sexual dimorphism in some physiological parameters of A guariba clamitans. The parameters reported herein can be used as reference values for other populations kept under similar conditions.


Assuntos
Alouatta/sangue , Análise Química do Sangue/veterinária , Testes Hematológicos/veterinária , Animais , Animais de Laboratório , Brasil , Feminino , Masculino , Valores de Referência
11.
Sci Rep ; 8(1): 86, 2018 01 08.
Artigo em Inglês | MEDLINE | ID: mdl-29311638

RESUMO

Zoonotic malaria poses a unique problem for malaria control. Autochthonous cases of human malaria in the Atlantic Forest have recently been attributed to Plasmodium simium, a parasite that commonly infects non-human primates in this Brazilian biome. However, due to its close similarity at both the morphological and molecular level to Plasmodium vivax, the diagnosis of P. simium in this region remains problematic. Therefore, a diagnostic assay able to accurately identify P. simium is important for malaria surveillance. Based on mitochondrial genome sequences, primers were designed to amplify a region containing a SNP specific to P. simium. This region can then be digested with the restriction enzyme HpyCH4III, which results in digestion of P. simium sequences, but not of any other malaria parasite. Fifty-two human and monkey blood samples from different regions and infected with different Plasmodium species were used to validate this protocol. This easy and inexpensive tool can be used for the diagnosis of P. simium in non-human primates and human infections from the Atlantic Forest region to monitor zoonotic malaria transmission in Brazil.


Assuntos
Florestas , Malária/diagnóstico , Malária/parasitologia , Plasmodium/genética , Zoonoses/diagnóstico , Zoonoses/parasitologia , Animais , Brasil , Genoma Mitocondrial , Humanos , Plasmodium/classificação , Plasmodium/isolamento & purificação , Reação em Cadeia da Polimerase , Polimorfismo de Fragmento de Restrição , Primatas , Análise de Sequência de DNA
12.
J Med Primatol ; 46(6): 337-342, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28809435

RESUMO

BACKGROUND: Hypervirulent strain of Klebsiella pneumoniae genotype K1 isolates have recently emerged, causing severe pyogenic liver abscess complicated by devastating metastatic infections in humans. METHODS: We describe a short outbreak of the non-human primate (NHP) research center, associated with a hypervirulent K. pneumoniae. The genetic similarity of the strains was evaluated by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) techniques, and virulence encoding genes were detected by polymerase chain reaction (PCR). RESULTS: The isolates were phenotypically like strains causing community-acquired invasive liver abscess syndrome in humans. All strains exhibited identical PFGE patterns and were found to belong to ST23 and presented a hypermucovisity phenotype and possessed magA and rmpA gene. CONCLUSION: This is the first case report of NHPs caused by K. pneumoniae displaying a hypermucoviscosity phenotype and belonging to capsular serotypes K1 and ST23.


Assuntos
Alouatta , Surtos de Doenças/veterinária , Infecções por Klebsiella/veterinária , Klebsiella pneumoniae/isolamento & purificação , Doenças dos Macacos/epidemiologia , Animais , Brasil/epidemiologia , Eletroforese em Gel de Campo Pulsado/veterinária , Infecções por Klebsiella/diagnóstico , Infecções por Klebsiella/epidemiologia , Infecções por Klebsiella/microbiologia , Klebsiella pneumoniae/classificação , Klebsiella pneumoniae/genética , Masculino , Doenças dos Macacos/diagnóstico , Doenças dos Macacos/microbiologia , Tipagem de Sequências Multilocus/veterinária , Reação em Cadeia da Polimerase/veterinária
13.
Mem Inst Oswaldo Cruz ; 111(9): 570-6, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27580347

RESUMO

Plasmodium falciparum and Plasmodium vivax have evolved with host switches between non-human primates (NHPs) and humans. Studies on the infection dynamics of Plasmodium species in NHPs will improve our understanding of the evolution of these parasites; however, such studies are hampered by the difficulty of handling animals in the field. The aim of this study was to detect genomic DNA of Plasmodium species from the faeces of New World monkeys. Faecal samples from 23 Alouatta clamitans from the Centre for Biological Research of Indaial (Santa Catarina, Brazil) were collected. Extracted DNA from faecal samples was used for molecular diagnosis of malaria by nested polymerase chain reaction. One natural infection with Plasmodium simium was identified by amplification of DNA extracted from the faeces of A. clamitans. Extracted DNA from a captive NHP was also used for parasite genotyping. The detection limit of the technique was evaluated in vitro using an artificial mixture of cultured P. falciparum in NHP faeces and determined to be 6.5 parasites/µL. Faecal samples of New World primates can be used to detect malaria infections in field surveys and also to monitor the genetic variability of parasites and dynamics of infection.


Assuntos
Alouatta/parasitologia , DNA de Protozoário/genética , Malária/veterinária , Doenças dos Macacos/parasitologia , Plasmodium/isolamento & purificação , Animais , Brasil , Fezes , Genótipo , Malária/parasitologia , Plasmodium/classificação
14.
Mem. Inst. Oswaldo Cruz ; 111(9): 570-576, Sept. 2016. tab, graf
Artigo em Inglês | LILACS | ID: lil-794731

RESUMO

Abstract Plasmodium falciparum and Plasmodium vivax have evolved with host switches between non-human primates (NHPs) and humans. Studies on the infection dynamics of Plasmodium species in NHPs will improve our understanding of the evolution of these parasites; however, such studies are hampered by the difficulty of handling animals in the field. The aim of this study was to detect genomic DNA of Plasmodium species from the faeces of New World monkeys. Faecal samples from 23 Alouatta clamitans from the Centre for Biological Research of Indaial (Santa Catarina, Brazil) were collected. Extracted DNA from faecal samples was used for molecular diagnosis of malaria by nested polymerase chain reaction. One natural infection with Plasmodium simium was identified by amplification of DNA extracted from the faeces of A. clamitans. Extracted DNA from a captive NHP was also used for parasite genotyping. The detection limit of the technique was evaluated in vitro using an artificial mixture of cultured P. falciparum in NHP faeces and determined to be 6.5 parasites/µL. Faecal samples of New World primates can be used to detect malaria infections in field surveys and also to monitor the genetic variability of parasites and dynamics of infection.


Assuntos
Animais , Alouatta/parasitologia , DNA de Protozoário/genética , Malária/veterinária , Doenças dos Macacos/parasitologia , Plasmodium/isolamento & purificação , Brasil , Fezes , Genótipo , Malária/parasitologia , Plasmodium/classificação
15.
Mem Inst Oswaldo Cruz ; 109(5): 641-53, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25099335

RESUMO

Blood infection by the simian parasite, Plasmodium simium, was identified in captive (n = 45, 4.4%) and in wild Alouatta clamitans monkeys (n = 20, 35%) from the Atlantic Forest of southern Brazil. A single malaria infection was symptomatic and the monkey presented clinical and haematological alterations. A high frequency of Plasmodium vivax-specific antibodies was detected among these monkeys, with 87% of the monkeys testing positive against P. vivax antigens. These findings highlight the possibility of malaria as a zoonosis in the remaining Atlantic Forest and its impact on the epidemiology of the disease.


Assuntos
Alouatta/parasitologia , Malária/veterinária , Doenças dos Macacos/epidemiologia , Plasmodium/classificação , Animais , Anticorpos Antiprotozoários/sangue , Brasil/epidemiologia , Florestas , Malária/epidemiologia , Malária/parasitologia , Doenças dos Macacos/parasitologia , Reação em Cadeia da Polimerase
16.
Mem. Inst. Oswaldo Cruz ; 109(5): 641-653, 19/08/2014. tab, graf
Artigo em Inglês | LILACS | ID: lil-720431

RESUMO

Blood infection by the simian parasite, Plasmodium simium, was identified in captive (n = 45, 4.4%) and in wild Alouatta clamitans monkeys (n = 20, 35%) from the Atlantic Forest of southern Brazil. A single malaria infection was symptomatic and the monkey presented clinical and haematological alterations. A high frequency of Plasmodium vivax-specific antibodies was detected among these monkeys, with 87% of the monkeys testing positive against P. vivax antigens. These findings highlight the possibility of malaria as a zoonosis in the remaining Atlantic Forest and its impact on the epidemiology of the disease.


Assuntos
Animais , Alouatta/parasitologia , Malária/veterinária , Doenças dos Macacos/epidemiologia , Plasmodium/classificação , Anticorpos Antiprotozoários/sangue , Brasil/epidemiologia , Florestas , Malária/epidemiologia , Malária/parasitologia , Doenças dos Macacos/parasitologia , Reação em Cadeia da Polimerase
17.
Rev. etol. (Online) ; 12(1/2): 12-17, dez. 2013. ilus, mapas
Artigo em Inglês | Index Psicologia - Periódicos | ID: psi-67690

RESUMO

Extra group copulations are rarely observed among the Alouatta genus, which lives in a fragmented area in Brazil. Here, we describe the second extra group copulation in A. caraya in literature, which was the first from Brazil. This happened in the southeast urban island forest, which measures 25 ha. In this forest there are two troops: one of them with thirteen howlers and the other with four. These howlers may be extinct in a few years since in the region there is only 3.89 % of native forests and high anthropic action due to agribusiness. We discuss the possible issues that led to the extra group copulation.(AU)


Cópulas extra grupo raramente são observados em animais do gênero Alouatta, que vivem em áreas fragmentadas do Brasil. Aqui, descrevemos a segunda cópula extra grupo em A. caraya na literatura, que foi a primeira do Brasil. Isso aconteceu na floresta ilha urbana sudeste, que mede 25 ha. Nesta floresta existem dois bandos: um deles com treze bugios e o outro com quatro. Estes bugios podem ser extintos em poucos anos, uma vez que na região há apenas 3,89% de florestas nativas e alta ação antrópica, devido ao agronegócio. Nós discutimos os possíveis aspectos que levaram à cópula extra grupo.(AU)


Assuntos
Animais , Atelidae/psicologia , Copulação , Brasil
18.
Rev. etol. (Online) ; 12(1/2): 12-17, Dec. 2013. ilus, mapas
Artigo em Inglês | LILACS | ID: lil-772582

RESUMO

Extra group copulations are rarely observed among the Alouatta genus, which lives in a fragmented area in Brazil. Here, we describe the second extra group copulation in A. caraya in literature, which was the first from Brazil. This happened in the southeast urban island forest, which measures 25 ha. In this forest there are two troops: one of them with thirteen howlers and the other with four. These howlers may be extinct in a few years since in the region there is only 3.89 % of native forests and high anthropic action due to agribusiness. We discuss the possible issues that led to the extra group copulation.


Cópulas extra grupo raramente são observados em animais do gênero Alouatta, que vivem em áreas fragmentadas do Brasil. Aqui, descrevemos a segunda cópula extra grupo em A. caraya na literatura, que foi a primeira do Brasil. Isso aconteceu na floresta ilha urbana sudeste, que mede 25 ha. Nesta floresta existem dois bandos: um deles com treze bugios e o outro com quatro. Estes bugios podem ser extintos em poucos anos, uma vez que na região há apenas 3,89% de florestas nativas e alta ação antrópica, devido ao agronegócio. Nós discutimos os possíveis aspectos que levaram à cópula extra grupo.


Assuntos
Animais , Atelidae/psicologia , Copulação , Brasil
19.
Fisioter. Bras ; 9(3): 177-181, maio-jun. 2008.
Artigo em Português | LILACS | ID: lil-546546

RESUMO

O objetivo deste trabalho foi verificar as concentrações plasmáticas de colesterol, triglicerídeos e lipídeos totais após terapia por ultra-som pulsado de 3 MHz, em ratas Wistar. As ratas foram divididas em grupo experimental e placebo e subdivididas conforme o tempo de retirada do sangue. O ultra-som foi aplicado na região abdominal, com potência de 1 W/cm2 e 2 min/cm2 ou com o aparelho desligado, respectivamente. Os níveis de colesterol foram significativamente (p < 0,05) superiores no grupo ultra-som imediatamente e 30 minutos após uma sessão e após dez sessões. As concentrações de lipídeos totais foram significativamente (p < 0,05) superiores imediatamente, 10 e 30 minutos após uma sessão e (p < 0,01) após dez sessões. Triglicerídeos séricos diminuíram significativamente no grupo ultra-som após dez sessões. As concentrações de triglicerídeos e lipídeos totais foram inversamente proporcionais após uma e dez sessões de ultra-som. Conclui-se que o ultra-som atua na liberação e quebra de gordura para o plasma sanguíneo após uma e dez sessões de terapia.


The purpose of this study was to verify plasmatic concentrations of cholesterol, triglycerides and total lipids in Wistar rats after 3 MHz pulsed ultrasound therapy. Rats were divided into experimental and placebo groups and subdivided depending on the blood collecting time. Ultrasound was applied in abdominal area at 1 W/cm2 potency and 2 min/cm2 or with the equipment off, respectively. Cholesterol levels were significantly higher (p < 0.05) in ultrasound group immediately and 30 minutes after one and ten sessions. Total lipids concentrations were significantly higher (p < 0.05) immediately, 10 and 30 minutes after one session and (p < 0.01) after ten sessions. Serum triglycerides decreased significantly in the ultrasound group after ten sessions. It was observed that triglycerides and total lipid concentrations were in inverse proportion after the first and the tenth session of ultrasound. Thus, it was concluded that ultrasound act on fat release and the break down of fat to blood plasma after one and ten sessions of therapy.


Assuntos
Colesterol , Estudo Comparativo , Lipídeos/efeitos adversos , Plasma , Triglicerídeos/análise , Triglicerídeos/efeitos adversos , Ultrassom , Ratos
20.
Rev. patol. trop ; 37(1): 48-56, jan.-abr. 2008. mapas, graf, ilus
Artigo em Inglês | LILACS | ID: lil-488261

RESUMO

Este artigo descreve o primeiro relato de parasitismo por Bertiella mucronata (Cestoda-Anoplocephalidae) em primata não humano brasileiro, da subespécie Alouatta guariba clamitans (Cabrera, 1940) (Primates: Atelidae), no estado de Santa Catrina. Animais de ambiente natural, provindos de três municípios diferentes da região do Vale do Rio Itajaí-Açu, estavam parasitados. São também descritas a prevalência e a eliminação diária de proglotes nas fezes de 28 bugios ruivos cativos. Alerta-se para a possibilidade de ocorrer bertielose humana na região. Para evitar a introdução deste parasito em áreas indenes, a investigação desta parasitose deve ser realizada sempre em avaliações sanitárias de espécimes de bugios ruivos suscetíveis de serem submetidos a processos de translocação e reintrodução.


Assuntos
Animais , Administração Sanitária , Alouatta , Doenças Parasitárias em Animais/epidemiologia , Meio Ambiente , Zoonoses , Brasil/epidemiologia
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