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1.
J Environ Manage ; 360: 121010, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38749135

RESUMEN

Numerous unique flora and fauna inhabit the Lower Florida Keys, including the endangered Florida Key deer, found nowhere else. In this vulnerable habitat of flat islands with low elevation, accelerated sea level rise poses a threat. Predicting the impact of sea level rise on vegetation and wildlife is crucial. This study used 5 Intergovernmental Panel on Climate Change (IPCC) sea level rise scenarios to assess their effects on No Name Key, Florida. The goal was to estimate changes in the Florida Key deer population relative to sea level rise using a lidar-derived elevation data and a vegetation map. The method used 2 cases to model the sea level rise impact. In Case 1, total non-submerged area at current sea level was determined. Using 5 IPCC scenarios, a new total non-submerged land area was estimated, and deer numbers were predicted for each scenario. In Case 2, upward migration of coastal vegetation combined with the coastal squeeze process was modeled. A distinct elevation range for each vegetation type at the current sea level was determined. Vegetation ranges were redistributed based on respective elevation ranges in the sea level rise scenarios. Areas for each vegetation type were recalculated, and Key deer numbers were estimated for each sea level rise scenario. Results under the worst emission scenario showed the following: (1) for case 1, the land area was reduced to 30 % of the current land area, corresponding to having about 27 deer, and (2) for case 2, the land area was reduced to 70 % of the current land area, having about 54 deer on No Name Key. The results indicated reduced non-submerged land area and less upland vegetation, particularly hardwoods/hammocks, by the year 2100. As less land area is available, a decline in Key deer population is expected as sea levels rise. Since Key deer favor upland vegetation, habitat affected by sea level rise will likely support a smaller deer population. The findings emphasize the need for precise, timely predictions of sea level rise impacts and long-term conservation strategies. Specifically designed measures are required to protect and maintain endangered wildlife, such as the Florida Key deer, residing on these vulnerable islands.


Asunto(s)
Ecosistema , Modelos Teóricos , Elevación del Nivel del Mar , Elevación del Nivel del Mar/estadística & datos numéricos , Florida , Dinámica Poblacional/estadística & datos numéricos , Distribución Animal , Simulación por Computador , Dispersión de las Plantas
2.
Int J Transgend ; 20(2-3): 155-168, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-32999603

RESUMEN

Background and Aims: Increasingly, research is emerging on the subjective experience of genderqueer people. This study explored how genderqueer identities are understood and managed in both personal and social domains. Method: Interview data from 25 genderqueer-identified American adolescents and emerging adults, aged 15 to 26 (M = 21.28, SD = 3.20), were pulled from a larger study of 90 transgender and genderqueer participants. The 90-minute semi-structured interviews included questions about gender identity, the developmental pathway of participants, and relationships with others regarding gender. Results: Participants described "genderqueer" as a sufficiently broad category to capture their diverse experiences, and descriptions of genderqueer identities were heterogeneous, directly contradicting binary understandings of gender identity. A thematic analysis of interview transcripts resulted in three themes: intrapsychic experience, descriptions of master narratives about gender identity, and the co-construction of identities. Discussion: Participants described navigating a series of master and alternative narratives, such that all transgender people transgress a cisnormative master narrative, but genderqueer people further transgress normative understandings of a medicalized, binary transgender identity. The experience of co-creating identities was the process by which participants actively navigated constraints of the master narrative experience. Participants described the integral role of language in crafting new narratives to legitimize genderqueer experiences, as well as the subsequent intragroup conflict resulting from conflicting relationships to narratives in the transgender community. This study highlights genderqueer identities as a source of strength and positivity, and the importance of expanding beyond the hegemonic gender binary within research and clinical practice.

3.
Actas Dermosifiliogr ; 108(3): 244-252, 2017 Apr.
Artículo en Inglés, Español | MEDLINE | ID: mdl-28063525

RESUMEN

INTRODUCTION: To date, no formal study has been published regarding how Colombian patients with skin disorders could be affected according to their perception of disease. OBJECTIVE: To determine the impact in quality of life of skin diseases in a Colombian population. METHODS: This multicenter study included patients with skin disease from almost the whole country. Individuals >18 years old; of any gender; with any skin disease and who signed informed consent, were included. We applied the Colombian validated version of the Skindex-29 instrument. RESULTS: A total of 1896 questionnaires had sufficient information for the analyses. No significant differences in sociodemographic characteristics of patients who returned the questionnaire incomplete vs. complete, were found. Participants mean age was 41.5 years. There were no statistical differences in men vs. women regarding the global (p=0.37), symptoms (p=0.71) and emotions (p=0.32) domains, whereas statistical differences were found in the function domain (p=0.04; Mann-Whitney U test). Psoriasis, contact dermatitis, atopic dermatitis, urticaria, hair disorders, Hansen's disease, scars, hyperhidrosis and genital human papillomavirus disease scored the highest. LIMITATIONS: Skindex-29 score variability as a result of differences in the location of the skin lesions, their inflammatory or non-inflammatory nature, and the start of therapy. CONCLUSIONS: Even the most localized or asymptomatic skin lesion in our population leads to a disruption at some level of patient's wellness. This study adds well supported scientific data of the burden of skin diseases worldwide.


Asunto(s)
Calidad de Vida , Enfermedades de la Piel , Adolescente , Adulto , Estudios Transversales , Autoevaluación Diagnóstica , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedades de la Piel/psicología , Adulto Joven
6.
Actas Dermosifiliogr ; 104(8): 672-8, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23968667

RESUMEN

INTRODUCTION: Nonmelanoma skin cancer is the most common malignancy in white individuals. The risk factors for squamous cell carcinoma, which belongs to the family of nonmelanoma skin cancers, have not been studied in Colombia. OBJECTIVE: To determine the risk factors for squamous cell carcinoma in patients at a national referral center for skin diseases in Colombia. MATERIAL AND METHODS: We conducted a case-control study that evaluated sociodemographic, epidemiological, and clinical factors among 332 individuals. Risk was calculated as odds ratio (ORs) using the multivariate conditional logistic regression analysis method. RESULTS: The following risk factors were identified: family history of skin cancer (OR, 6.55; 95% CI, 1.4-28.9), living in a rural area after the age of 30 years (OR, 3.13; 95% CI, 1.3-7.2), a lifetime working outdoors (OR, 2.98; 95% CI, 1.5-5.7), smoking more than 10 cigarettes a day (OR, 2.96; 95% CI, 1.3-6.5), actinic conjunctivitis (OR, 2.68; 95% CI, 1.2-5.9), poikiloderma of Civatte (OR, 3.29; 95% CI, 1.7-6.1), numerous facial actinic keratoses (OR, 9.23; 95% CI, 4.9-17.1), and numerous freckles (OR, 3.68; 95% CI, 1.3-10.1). CONCLUSIONS: We have documented clinical characteristics and personal history factors that should guide the physician in making decisions on the preventive and follow-up measures to be adopted for individuals at risk of squamous cell carcinoma. These findings may help guide policy for controlling the disease using local information.


Asunto(s)
Carcinoma de Células Escamosas/epidemiología , Neoplasias Cutáneas/epidemiología , Adulto , Anciano , Anciano de 80 o más Años , Arsenicales/efectos adversos , Estudios de Casos y Controles , Colombia/epidemiología , Dermatosis Facial/epidemiología , Femenino , Humanos , Queratosis Actínica/epidemiología , Masculino , Melanosis/epidemiología , Persona de Mediana Edad , Neoplasias Inducidas por Radiación/epidemiología , Ocupaciones/estadística & datos numéricos , Ropa de Protección/estadística & datos numéricos , Factores de Riesgo , Población Rural/estadística & datos numéricos , Fumar/epidemiología , Factores Socioeconómicos , Luz Solar/efectos adversos , Protectores Solares , Encuestas y Cuestionarios , Centros de Atención Terciaria/estadística & datos numéricos
7.
AoB Plants ; 15(5): plad063, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37899978

RESUMEN

Cross-cultural research on edible plants might include ecological and evolutionary perspectives to understand processes behind species selection and management. With a database of approximately 500 comestible plants of the Province of the Gulf of Mexico in Mesoamerica, phylogenetic analyses are conducted to identify convergence and phylogenetic signal of type of use and significant clustering in the resulting phylogenetic trees. Analyses considered type of management (wild/managed vs. cultivated), type of use (edible, condiment, for wrapping food) and organ utilized. Elevated phylogenetic diversity and signal are expected for wild comestible taxa, indicating that people are using lineages across the angiosperm tree for food, resulting in broadness in diet and use of their regional resources. Main results are: (i) condiment species were identified in groups with an elevated phylogenetic signal; (ii) hot nodes for lineages utilized for wrapping food were found in many monocot groups as well as in epiphytes of cloud forests with leathery leaves; (iii) edible taxa were identified with the highest significant clustering restricted to certain branches in the phylogeny; (iv) wild and cultivated edible plants belong to identical lineages with replacement of species, implying that same plant groups known for their comestible benefits are substituted by species distributed in the Province and (v) wild versus cultivated lineages for condiment are different. Most food species in the Province belong to four families, namely Fabaceae, Cactaceae, Solanaceae and Asparagaceae. Analyses discovered underutilized wild species in identical clades to managed/cultivated taxa that can be studied further to identify cultivation practices. Results suggest that people are utilizing different lineages in the angiosperm tree available locally, for particular uses, like condiment or for wrapping food. Evidence can be used to study further undervalued edible species closely related to the most common food taxa as well as for bioprospection of their nutritional content.

8.
New Phytol ; 193(1): 276-287, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21955031

RESUMEN

• Mesoamerican arid biomes epitomize neotropical rich and complex biodiversity. To document some of the macroevolutionary processes underlying the vast species richness of Mesoamerican seasonally dry tropical forests (SDTFs), and to evaluate specific predictions about the age, geographical structure and niche conservatism of SDTF-centered woody plant lineages, the diversification of Bursera is reconstructed. • Using a nearly complete Bursera species-level phylogeny from nuclear and plastid genomic markers, we estimate divergence times, test for phylogenetic and temporal diversification heterogeneity, test for geographical structure, and reconstruct habitat shifts. • Bursera became differentiated in the earliest Eocene, but diversified during independent early Miocene consecutive radiations that took place in SDTFs. The late Miocene average age of Bursera species, the presence of phylogenetic geographical structure, and its strong conservatism to SDTFs conform to expectations derived from South American SDTF-centered lineages. • The diversification of Bursera suggests that Mesoamerican SDTF richness derives from high speciation from the Miocene onwards uncoupled from habitat shifts, during a period of enhanced aridity resulting mainly from global cooling and regional rain shadows.


Asunto(s)
Bursera/genética , Variación Genética , Estaciones del Año , Árboles/genética , Clima Tropical , Algoritmos , Américas , Ecosistema , Geografía , Historia Antigua , Filogenia , Especificidad de la Especie , Factores de Tiempo
9.
Actas Dermosifiliogr ; 103(4): 294-300, 2012 May.
Artículo en Español | MEDLINE | ID: mdl-22078143

RESUMEN

BACKGROUND: Colombia is home to one of the areas with the highest levels of exposure to UV radiation in the world, namely, the Andes Mountains, which stretch along the equator. Recent studies have reported an increase in the incidence of basal cell carcinoma in Colombia, but the risk factors associated with the development of this disease have not been studied. OBJECTIVE: To determine the risk factors for basal cell carcinoma in patients from the National Dermatology Center of Colombia. MATERIAL AND METHODS: We performed a case-control study involving 406 individuals, and analyzed sociodemographic, epidemiological, and clinical factors using multiple logistic regression. RESULTS: The following risk factors were identified: skin phototypes I to III (odds ratio [OR], 15.4), family history of skin cancer (OR, 5.8), past history of actinic keratosis (OR, 3.3), continued residence in a rural area after the age of 30 years (OR, 2.96), practice of outdoor sports (OR, 2.67), history of 10 or more episodes of sunburn (OR, 2.3), actinic conjunctivitis (OR, 2.26), and failure to use a hat in childhood (OR, 2.11). CONCLUSIONS: Different factors specific to Colombia increase the risk of basal cell carcinoma. In particular, the association with phototype III could partly explain the increase in incidence detected in this country. Preventive programs should target the risk groups detected and highlight the importance of basing decisions on local evidence.


Asunto(s)
Carcinoma Basocelular/epidemiología , Neoplasias Cutáneas/epidemiología , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Casos y Controles , Colombia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Factores de Riesgo
10.
Ecol Lett ; 14(5): 511-21, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-21332621

RESUMEN

Flowering times of plants are important life-history components and it has previously been hypothesized that flowering phenologies may be currently subject to natural selection or be selectively neutral. In this study we reviewed the evidence for phenotypic selection acting on flowering phenology using ordinary and phylogenetic meta-analysis. Phenotypic selection exists when a phenotypic trait co-varies with fitness; therefore, we looked for studies reporting an association between two components of flowering phenology (flowering time or flowering synchrony) with fitness. Data sets comprising 87 and 18 plant species were then used to assess the incidence and strength of phenotypic selection on flowering time and flowering synchrony, respectively. The influence of dependence on pollinators, the duration of the reproductive event, latitude and plant longevity as moderators of selection were also explored. Our results suggest that selection favours early flowering plants, but the strength of selection is influenced by latitude, with selection being stronger in temperate environments. However, there is no consistent pattern of selection on flowering synchrony. Our study demonstrates that phenotypic selection on flowering time is consistent and relatively strong, in contrast to previous hypotheses of selective neutrality, and has implications for the evolution of temperate floras under global climate change.


Asunto(s)
Desarrollo de la Planta , Selección Genética , Evolución Biológica , Cambio Climático , Flores/crecimiento & desarrollo , Fenotipo , Filogenia , Dispersión de Semillas , Especificidad de la Especie , Factores de Tiempo
11.
Am J Bot ; 98(1): 44-61, 2011 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21613084

RESUMEN

PREMISE OF THE STUDY: Cactaceae is one of the most charismatic plant families because of the extreme succulence and outstanding diversity of growth forms of its members. Although cacti are conspicuous elements of arid ecosystems in the New World and are model systems for ecological and anatomical studies, the high morphological convergence and scarcity of phenotypic synapomorphies make the evolutionary relationships and trends among lineages difficult to understand. METHODS: We performed phylogenetic analyses implementing parsimony ratchet and likelihood methods, using a concatenated matrix with 6148 bp of plastid and nuclear markers (trnK/matK, matK, trnL-trnF, rpl16, and ppc). We included 224 species representing approximately 85% of the family's genera. Likelihood methods were used to perform an ancestral character reconstruction within Cactoideae, the richest subfamily in terms of morphological diversity and species number, to evaluate possible growth form evolutionary trends. KEY RESULTS: Our phylogenetic results support previous studies showing the paraphyly of subfamily Pereskioideae and the monophyly of subfamilies Opuntioideae and Cactoideae. After the early divergence of Blossfeldia, Cactoideae splits into two clades: Cacteae, including North American globose and barrel-shaped members, and core Cactoideae, including the largest diversity of growth forms distributed throughout the American continent. Para- or polyphyly is persistent in different parts of the phylogeny. Main Cactoideae clades were found to have different ancestral growth forms, and convergence toward globose, arborescent, or columnar forms occurred in different lineages. CONCLUSIONS: Our study enabled us to provide a detailed hypothesis of relationships among cacti lineages and represents the most complete general phylogenetic framework available to understand evolutionary trends within Cactaceae.


Asunto(s)
Cactaceae/crecimiento & desarrollo , Cactaceae/genética , Evolución Molecular , Cactaceae/anatomía & histología , Cactaceae/clasificación , Núcleo Celular/genética , ADN de Plantas/genética , Marcadores Genéticos , Filogenia , Plastidios/genética , Análisis de Secuencia de ADN
12.
J Dermatolog Treat ; 32(6): 635-642, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31668100

RESUMEN

PURPOSE: Hair removal procedures, including electrolysis and laser hair removal, are the most commonly pursued gender-affirmative medical interventions by transfeminine people, but previous empirical studies have not examined their relationship to psychological well-being. MATERIALS AND METHODS: Participants were 281 transfeminine adults in the United States who responded to an online questionnaire. RESULTS: Satisfaction with one's current state of hair removal was negatively correlated with situational body image dysphoria, depression symptoms, anxiety symptoms, and negative affect, and positively correlated with positive affect. CONCLUSIONS: Results of this study suggest that hair removal is associated with both decreased distress but also increased subjective well-being (e.g. higher positive affect). Though the construct of 'gender euphoria' has been introduced in previous publications, it has thus far not been rigorously defined or operationalized within health research. These results suggest that gender euphoria can be understood in terms of increased subjective well-being associated with gender affirmation, including gender-affirmative medical interventions. This study demonstrates a significant association between hair removal services and depression symptoms, anxiety symptoms, situational body image dysphoria, positive affect, and negative affect in transfeminine adults. These findings cast significant doubt on the assertion that hair removal services for transfeminine people are 'cosmetic.'


Asunto(s)
Disforia de Género , Remoción del Cabello , Personas Transgénero , Adulto , Euforia , Identidad de Género , Humanos , Estados Unidos
13.
Animals (Basel) ; 11(6)2021 May 27.
Artículo en Inglés | MEDLINE | ID: mdl-34071958

RESUMEN

Strategic control and eradication programs for wild pigs (Sus scrofa) are being developed to help curtail the expanding populations of this invasive, alien species. Drop nets and corral traps have a long history of capturing a multitude of wildlife species, so we evaluated the effectiveness and efficiency of these traps for controlling wild pigs in southern Oklahoma. We also developed and evaluated a suspended metal trap that provided real-time monitoring and deployment to capture animals. Effectiveness of each trap type was estimated as the proportion of pigs removed from the total population, whereas efficiency was calculated based on catch per unit effort (CPUE) (i.e., the number of person hours per pig removal). During 3 years of study (2010-2012), we removed 601 pigs, 296 using drop nets, 60 using corral traps, and 245 using suspended traps. Suspended traps removed 88.1% of the estimated population, whereas drop nets removed 85.7% and corral traps removed 48.5%. CPUE was 0.64 person hours/pig using suspended traps followed by 1.9 person hours/pig for drop nets and 2.3 person hours/pig for corral traps. Drop nets and suspended traps were more effective at removing a large proportion of the population (>85%), mainly through whole sounder removal, but the suspended trap with real-time notifications was the most efficient trap type, requiring fewer person hours to operate.

14.
Psychotherapy (Chic) ; 58(1): 37-49, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33856855

RESUMEN

The gender-affirmative life span approach (GALA) is an innovative therapeutic framework for promoting the mental health of transgender and gender-diverse (TGD) clients of all ages. Based in interdisciplinary philosophical foundations, GALA proposes that TGD clients can be supported in psychotherapy through (a) developing gender literacy, (b) building resiliency, (c) moving beyond the binary, (d) exploring pleasure-oriented sexuality, and (e) making connections to medical interventions. Psychotherapy incorporating these 5 core components is developmentally tailored for children, adolescents, young adults, or older adults. Developing gender literacy is the process of understanding how sex assigned at birth, gender identity, gender expression, and sexual orientation are distinct but interconnected concepts, as well as learning to identify oppressive practices in TGD people's lives. Building resiliency involves learning how to overcome adversity and effectively cope with challenging situations in life. Resiliency-building also involves having social support networks to share these difficulties and gain support. Gender and sexual binaries pathologize nonconformity and limit the full range of healthy gender and sexual expression. Moving beyond the binary to a spectrum approach allows for the inclusion and affirmation of all gender identities and expressions. Unfortunately, research and practice have largely focused on negative sexual outcomes for TGD people. Thus, age-appropriate psychotherapy aimed at developing sex-positive pleasure and satisfaction is critical. Lastly, gender-competent mental health practitioners need to have knowledge about, and skills to refer for, medical interventions, when appropriate. (PsycInfo Database Record (c) 2021 APA, all rights reserved).


Asunto(s)
Identidad de Género , Personas Transgénero , Adolescente , Anciano , Niño , Femenino , Humanos , Recién Nacido , Longevidad , Masculino , Psicoterapia , Sexualidad , Adulto Joven
15.
Sci Rep ; 11(1): 19645, 2021 10 04.
Artículo en Inglés | MEDLINE | ID: mdl-34608197

RESUMEN

Anecdotal evidence suggests that community infection control measures during the COVID-19 outbreak have modified the number and natural history of acute surgical inflammatory processes (ASIP-appendicitis, cholecystitis, diverticulitis and perianal abscesses) admissions. This study aims to evaluate the impact of the COVID-19 pandemic on the presentation and treatment ASIP and quantify the effect of COVID-19 infection on the outcomes of ASIP patients. This was a multicentre, comparative study, whereby ASIP cases from 2019, 2020 and 2021 (March 14th to May 2nd) were analyzed. Data regarding patient and disease characteristics as well as outcomes, were collected from sixteen centres in Madrid, and one in Seville (Spain). The number of patients treated for ASIP in 2019 was 822 compared to 521 in 2020 and 835 in 2021. This 1/3rd reduction occurs mainly in patients with mild cases, while the number of severe cases was similar. Surgical standards suffered a step back during the first wave: Lower laparoscopic approach and longer length of stay. We also found a more conservative approach to the patients this year, non-justified by clinical circumstances. Luckily these standards improved again in 2021. The positive COVID-19 status itself did not have a direct impact on mortality. Strikingly, none of the 33 surgically treated COVID positive patients during both years died postoperatively. This is an interesting finding which, if confirmed through future research with a larger sample size of COVID-19 positive patients, can expedite the recovery phase of acute surgical services.


Asunto(s)
Apendicitis/patología , COVID-19/patología , Colecistitis/patología , Diverticulitis/patología , Adulto , Anciano , Apendicitis/complicaciones , Apendicitis/epidemiología , Apendicitis/cirugía , COVID-19/complicaciones , COVID-19/epidemiología , COVID-19/virología , Colecistitis/complicaciones , Colecistitis/epidemiología , Colecistitis/cirugía , Diverticulitis/complicaciones , Diverticulitis/epidemiología , Diverticulitis/cirugía , Femenino , Humanos , Laparoscopía , Tiempo de Internación , Masculino , Persona de Mediana Edad , Pandemias , SARS-CoV-2/aislamiento & purificación , Índice de Severidad de la Enfermedad , España/epidemiología
16.
Mol Phylogenet Evol ; 57(2): 798-811, 2010 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-20723609

RESUMEN

Molecular phylogenies are invaluable for testing morphology-based species delimitation in species complexes, as well as for examining hypotheses regarding the origination of species in these groups. Using five nucleotide markers, we reconstructed the phylogeny of the Bursera simaruba species complex of neotropical trees to test the notion that four "satellite" species originated from populations of the most widely distributed member of the genus, B. simaruba, which the satellites strongly resemble. In addition to molecular phylogenetic reconstruction, we tested species delimitation of B. simaruba and the satellites using multivariate analyses of morphological and ecological characters. The analyses evaluated the taxonomic value of these traditional characters and pinpointed those in need of further study, such as the expression of pubescence. Phylogenetic data rejected the origin of three satellite species from their purported ancestor, B. simaruba, and we ascribe their morphological similarity to convergence or parallelism. The fourth satellite species likely represents one end of a spectrum of inflorescence length variation within B. simaruba and is conspecific. Despite its marked morphological variability, we recovered B. simaruba as a single valid species, which implies that it maintains genetic cohesion among distant populations throughout its vast range.


Asunto(s)
Bursera/clasificación , Filogenia , Animales , Teorema de Bayes , Biodiversidad , Bursera/genética , ADN de Plantas/genética , Reacción en Cadena de la Polimerasa
17.
BMC Res Notes ; 12(1): 570, 2019 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-31511073

RESUMEN

OBJECTIVE: The ruffed grouse, Bonasa umbellus, is broadly distributed across North America and displays considerable taxonomic diversity. Except for a genetic study of some western populations of ruffed grouse, nothing is known about genetic variation in other regions of Canada and the United States. Our objective is to examine patterns of mitochondrial DNA (mtDNA) variation in the ruffed grouse across western, central, and eastern parts of its distribution. We compare patterns of mtDNA variation to those characterized by morphology and ecology. Additionally, we evaluate the demographic history of the species based on mitochondrial haplotype diversity. RESULTS: Patterns of mtDNA variation revealed geographic subdivision, with populations of ruffed grouse subdivided into 3 to 4 genetically distinct groups. This subdivision partially coincided with the ranges of described subspecies. Behavioral traits prohibiting long-distance movement and barriers to dispersal in response to physiography and unsuitable habitat help explain these patterns of subdivision. Historically, the ruffed grouse probably experienced a population expansion, possibly in response to changes during the Pleistocene.


Asunto(s)
ADN Mitocondrial/genética , Galliformes/genética , Variación Genética , Mitocondrias/genética , Animales , Canadá , Galliformes/clasificación , Frecuencia de los Genes , Geografía , Haplotipos , Mitocondrias/metabolismo , Filogenia , Análisis de Secuencia de ADN/métodos , Estados Unidos
18.
Ann R Coll Surg Engl ; 100(1): e10-e11, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29046099

RESUMEN

A Meckel's diverticulum is a common anomaly of the gastrointestinal tract. Although the majority of patients do not have any symptoms, malignancies can develop inside these diverticula, with neuroendocrine tumours being the most common. Diverticulectomy is the best option for complicated diverticula but prophylactic resection of asymptomatic diverticula in adults remains controversial. We present a case series of three patients with a neuroendocrine tumour found in a Meckel's diverticulum. Given the number of asymptomatic diverticula not resected, it seems likely that incidental neuroendocrine tumours are more prevalent than thought previously. With the minimally invasive techniques now available and the low complication rate for incidental diverticulectomy, we believe that the benefits of resection of this high risk area for cancer outweigh the risks of surgery.


Asunto(s)
Neoplasias del Íleon , Divertículo Ileal , Tumores Neuroendocrinos , Humanos , Íleon/cirugía , Masculino , Persona de Mediana Edad
20.
J Wildl Dis ; 43(4): 726-30, 2007 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-17984269

RESUMEN

Overabundant white-tailed deer (Odocoileus virginianus) populations have been reported in many urban and suburban communities across the United States. Large populations of deer can potentially increase the risk of human-wildlife conflicts, such as deer-vehicle collisions, transmission of disease to humans, and vegetation damage. In 2003, efforts to control white-tailed deer numbers were initiated at the National Aeronautical and Space Agency's (NASA) Lyndon B. Johnson Space Center (JSC) in Houston, Texas, using the long-lasting, single-dose contraceptive SpayVac. Our objectives were to evaluate the effectiveness of SpayVac for reducing white-tailed deer fertility and determine the partial cost for treatment. Between 2003 and 2004, we monitored 45 adult female deer (34 treated with SpayVac, 11 controls treated with a placebo). Fawning rate over 2 yr for deer treated with SpayVac >30 days prior to the rut was 0% (n=31), whereas the fawning rate for control deer was 78% (n=11). Inoculation 1 mo prior to the breeding season was sufficient time to achieve fertility control. We conclude that SpayVac can effectively reduce the fertility of urban white-tailed deer.


Asunto(s)
Anticoncepción Inmunológica/veterinaria , Ciervos , Fertilidad/efectos de los fármacos , Regulación de la Población/métodos , Vacunas Anticonceptivas/administración & dosificación , Animales , Animales Salvajes/fisiología , Anticoncepción Inmunológica/efectos adversos , Anticoncepción Inmunológica/métodos , Ciervos/fisiología , Femenino , Inmunización Secundaria/veterinaria , Resultado del Tratamiento , Vacunas Anticonceptivas/inmunología
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