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2 resultados encontrados para: AUTOR: Monroy Vilchis, Octavio
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Artículo - Nota científica con arbitraje
Resumen en: Inglés |
Resumen en inglés

Ticks are common ectoparasites of amphibians and reptiles but very few reports of such parasites on crocodylians exist worldwide. Herein, we report the first detailed observations of Amblyomma dissimile Koch, 1844 on the 3 crocodylian species present in Mexico, with the first report of tick parasitism on Crocodylus acutus and the second on Caiman crocodilus chiapasius. This is also the first report of A. dissimile in the state of Quintana Roo. Proportions of infested individuals found in this study ranged from 0.51 to 1.96%, suggesting that tick parasitism in crocodylians is likely opportunistic and occurs when individuals leave the water for terrestrial activities. Tick parasitism does not represent a major threat to crocodylians. The increasing habitat destruction/fragmentation and cattle expansion in southeastern Mexico, however, could increase tick populations and trigger tick parasitism and tick-borne diseases in herpetofauna and other vertebrates, including humans. Thus, studies are needed to better understand these relationships.

*En hemeroteca, SIBE-Chetumal
Predicting potential distribution of the jaguar (Panthera onca) in Mexico: identification of priority areas for conservation
Rodríguez Soto, Clarita (autora) ; Monroy Vilchis, Octavio (autor) ; Maiorano, Luigi (autor) ; Boitani, Luigi (autor) ; Faller Menéndez, Juan Carlos (autor) ; Briones Salas, Miguel Ángel (autor) ; Núñez, Rodrigo (autor) ; Rosas Rosas, Octavio C. (autor) ; Ceballos González, Gerardo Jorge (autor) ; Falcucci, Alessandra (autora) ;
Disponible en línea
Contenido en: Diversity and Distribution Vol. 17, no. 2 (March 2011), p. 350-361 ISSN: 1366-9516
Bibliotecas: Chetumal
SIBE Chetumal
60519-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Chetumal
Resumen en: Inglés |
Resumen en inglés

Aim The jaguar, Panthera onca , is a species of global conservation concern. In Mexico, the northernmost part of its distribution range, its conservation status, is particularly critical, while its potential and actual distribution is poorly known. We propose an ensemble model (EM) of the potential distribution for the jaguar in Mexico and identify the priority areas for conservation. Location Mexico. Methods We generated our EM based on three presence‐only methods (Ecological Niche Factor Analysis, Mahalanobis distance, Maxent) and considering environmental, biological and anthropogenic factors. We used this model to evaluate the efficacy of the existing Mexican protected areas (PAs), to evaluate the adequacy of the jaguar conservation units (JCUs) and to propose new areas that should be considered for conservation and management of the species in Mexico. Results Our results outline that 16% of Mexico (c. 312,000 km2) can be considered as suitable for the presence of the jaguar. Furthermore, 13% of the suitable areas are included in existing PAs and 14% are included in JCUs (Sanderson et al. , 2002). Main conclusions Clearly much more should be carried out to establish a proactive conservation strategy. Based on our results, we propose here new jaguar conservation and management areas that are important for a nationwide conservation blueprint.