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Documents disponibles écrits par cet auteur (17)
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Article
Alberto Pina-Ortiz, Auteur ; José Alfredo Castillo-Guerrero, Auteur ; Luis Manuel Enríquez-Paredes, Auteur ; Guillermo Fernández, Auteur ; Salvador Hernandez-Vazquez, Auteur ; Petra Quillfeldt, AuteurBody size can vary across geographical gradients, and these clines have been mainly attributed to temperature (i.e., the heat conservation hypothesis). However, in tropical areas, this pattern is not necessarily fulfilled. Furthermore, it is not[...]
Article
José Alfredo Castillo‐Guerrero, Auteur ; Alberto Piña‐Ortiz, Auteur ; Luis Enríquez‐Paredes, Auteur ; Albert M. van der Heiden, Auteur ; Salvador Hernández‐Vázquez, Auteur ; Nancy C. Saavedra‐Sotelo, Auteur ; Guillermo Fernández, AuteurUnderstanding genetic structure and gene flow can elucidate the mechanisms of diversification and adaptation in seabirds and help define conservation and management units. From 2012 to 2016, we collected blood and feather samples from 156 Red-bi[...]
Article
Ivonne I. Vega‐Ruiz, Auteur ; José Alfredo Castillo‐Guerrero, Auteur ; Eduardo Palacios, Auteur ; Guillermo Fernández, AuteurThe islands of Bahía Santa María-La Reforma, Sinaloa, Mexico, host the largest breeding population of the western race of American Oystercatchers (Haematopus palliatus frazari). This resident shorebird has a small breeding range restricted to no[...]
Article
Guillermo Fernández, Auteur ; Jaqueline Garcia-Hernandez, Auteur ; Edgar Cruz-Acevedo, Auteur ; Jose Alfredo Castillo-Guerrero, AuteurMercury concentration was quantified in liver, muscle, and primary feathers of pooled samples of Western Sandpiper (Calidris mauri) collected in December-January 2010 (wintering) and March-April 2011 (premigration) in Ensenada Pabellones and Bah[...]
Article
Alberto Pina-Ortiz, Auteur ; Salvador Hernandez-Vazquez, Auteur ; Guillermo Fernández, Auteur ; Jose Alfredo Castillo-Guerrero, AuteurThe breeding distribution and population size of the Red-billed Tropicbird (Phaethon aethereus) in Mexico were reviewed. This species has been confirmed to breed on 14 and potentially breed on six Mexican Pacific islands: two in the North Pacifi[...]
Article
Eduardo Palacios, Auteur ; José Alfredo Castillo-Guerrero, Auteur ; Daniel Galindo-Espinosa, Auteur ; Lucía Alfaro, Auteur ; Edgar Amador, Auteur ; Guillermo Fernández, Auteur ; Jonathan Vargas, Auteur ; Xicoténcatl Vega, AuteurAbstract. The western race of the American Oystercatcher (Haematopus palliatus frazari) is a resident and endangered shorebird of western Mexico. Its breeding population and conservation concerns are poorly known, but recent information indicate[...]
Article
Francisco Santiago-Quesada, Auteur ; Noelia Albano, Auteur ; José Alfredo Castillo-Guerrero, Auteur ; Guillermo Fernández, Auteur ; Erick González-Medina, Auteur ; Juan MANUEL Sánchez-Guzmán, AuteurThe validity of using the phytohaemagglutinin (PHA) test to measure acquired immunity, one of the most widely used methods, is currently being debated due to new knowledge on the complex physiology of the process. As a greater secondary response[...]
Article
Francisco Santiago-Quesada, Auteur ; Noelia Albano, Auteur ; Jose Alfredo Castillo-Guerrero, Auteur ; Guillermo Fernández, Auteur ; Erick González-Medina, Auteur ; Juan Manuel Sanchez-Guzman, AuteurThe validity of using the phytohaemagglutinin (PHA) test to measure acquired immunity, one of the most widely used methods, is currently being debated due to new knowledge on the complex physiology of the process. As a greater secondary response[...]
Article
Francisco Santiago-Quesada, Auteur ; Noelia Albano, Auteur ; José Alfredo Castillo-Guerrero, Auteur ; Guillermo Fernández, Auteur ; Erick González-Medina, Auteur ; Juan MANUEL Sánchez-Guzmán, AuteurThe validity of using the phytohaemagglutinin (PHA) test to measure acquired immunity, one of the most widely used methods, is currently being debated due to new knowledge on the complex physiology of the process. As a greater secondary response[...]
Article
Erick González-Medina, Auteur ; José Alfredo Castillo-Guerrero, Auteur ; Francisco Santiago-Quesada, Auteur ; Auxiliadora Villegas, Auteur ; José A. Masero, Auteur ; Juan M. Sánchez-Guzmán, Auteur ; Guillermo Fernández, AuteurParental care in long-lived bird species involves a trade-off between the benefits of increasing the effort expended on current offspring and the costs that this represents for future reproductive output. Under regimes of high environmental vari[...]
Article
Guillermo Fernández, Auteur ; David B. Lank, AuteurIndividuals manage their risk of predation in different ways in different situations. We studied the use of anti-predator behavior by Western Sandpipers (Calidris mauri) at Bahia Santa Maria, northwestern Mexico, foraging in three habitats that [...]
Article
Guillermo Fernández, Auteur ; David B. Lank, AuteurIndividuals within a population may vary considerably in the way they exploit available food resources. If the sexes differ in the size of their feeding apparatus, there can be differences in foraging behaviour and habitat use, hence one sex may[...]
Article
Luis M. Enriquez-Paredes, Auteur ; Carmel Vilanova, Auteur ; Guillermo Fernández, AuteurAlthough Western Sandpipers (Calidris mauri) are one of the best-studied shorebirds along the Pacific Flyway, their genetic identity and population structure is poorly known. We studied the genetic population structure of nonbreeding Western San[...]
Article
Gustavo D. Danemann, Auteur ; Roberto Carmona, Auteur ; Guillermo Fernández, Auteur
Article
Juan G. Navedo, Auteur ; Guillermo Fernández, Auteur ; Juanita Fonseca, Auteur ; Mark C. Drever, AuteurShrimp aquaculture farms have greatly expanded at tropical areas worldwide, especially during the past three decades. One of the main core areas of this expansion was the northwestern coast of Mexico, prompting conservation concern for the shore[...]
Article
Samantha E. Franks, Auteur ; D. Ryan Norris, Auteur ; T. Kurt Kyser, Auteur ; Guillermo Fernández, Auteur ; Birgit Schwarz, Auteur ; Roberto Carmona, Auteur ; Mark A. Colwell, Auteur ; Jorge Correa Sandoval, Auteur ; Alexey Dondua, Auteur ; H. River Gates, Auteur ; Ben Haase, Auteur ; David J. Hodkinson, Auteur ; Ariam Jimenez, Auteur ; Richard B. Lanctot, Auteur ; Brent Ortego, Auteur ; Brett K. Sandercock, Auteur ; Felicia Sanders, Auteur ; John Y. Takekawa, Auteur ; Nils Warnock, Auteur ; Ron C. Ydenberg, Auteur ; David B. Lank, AuteurUnderstanding the population dynamics of migratory animals and predicting the consequences of environmental change requires knowing how populations are spatially connected between different periods of the annual cycle. We used stable isotopes to[...]
Article
Guillermo Fernández, Auteur ; David B. Lank, AuteurNonbreeding shorebirds often alternate social structure between anonymous flocks and territorial behavior in response to different environmental factors. To evaluate specific drivers for one species, we studied the spacing behavior of wintering [...]
