Temporal variation in spatial distribution by age of Phoenicopterus ruber (Phoenicopteriformes: Phoenicopteridae) in the wetlands of Yucatán, Mexico. The Caribbean Flamingo (Phoenicopterus ruber) in Mexico is distributed throughout the complex of lagoons in coastal wetlands of the Yucatan Peninsula. The species shows a tendency toward differential use of areas between juveniles and adults at different stages of their life cycle, and in different seasons. The aim of this study was to determine the most important areas where flamingos are distributed in Yucatan wetlands, and to describe temporal variations according to age and stages of their life cycle. For this, we used the records of ringed individuals sighted during the period 2010-2015. The areas with the largest numbers of individuals, by stage and season, were identified. Flamingos were recorded in 39 different areas of 43 sampled. In general, the sites with the largest number of records were Isla La Angostura and Punta Mecoh. To both juveniles and adults, areas with higher occupancy rates differed by age between the different stages of the life cycle and seasons. In the Charca Salinera Chel and Isla La Angostura ringed flamingos of almost all ages were recorded. Although already described areas (Celestún, Ría Lagartos) are certainly important, new sites hosting considerable populations at some stage of this species life cycle were detected (e.g. Humedal Progreso; Salamandra, Laguna Rosada; Xcambo). These new sites should be given more attention and important security measures and protection are recommended to all of them. It is necessary to seek new support sources for studies that determine the flamingo population's status in difficult access areas for which little information is available. Rev. Biol. Trop. 65 (4): 1483-1495. Epub 2017 December 01.
La ocurrencia de dos o más especies en espacio y tiempo (coexistencia) es la condición inicial para las interacciones interespecíficas. Por ejemplo, el binomio Urocyon cinereoargenteus y Spilogale angustifrons que es poco conocido. Nuestro objetivo es contribuir con información sobre la coexistencia de estos mesocarnívoros en Komchén de los Pájaros, en el norte de Yucatán, dominada por selva baja caducifolia. Colocamos ocho cámaras-trampas del 23 de diciembre de 2019 al 20 de junio de 2020 distribuidas en ocho estaciones de muestreo. Representamos los patrones de actividad diaria mediante un diagrama circular por horas con base en la frecuencia de los registros fotográficos. Obtuvimos 68 foto-registros con un esfuerzo de muestreo de 4,320 hr-trampa en 180 días, tres corresponden a la coexistencia de U. cinereoargenteus y S. angustifrons. La actividad de U. cinereoargenteus ocurrió todo el día durante la temporada seca. El índice de abundancia relativa de la coexistencia de S. angustifrons-U. cinereoargenteus fue de 0.7 y solo para U. cinereoargenteus fue de 15.74. En tres momentos registramos la sincronización de la actividad de U. cinereoargenteus y S. angustifrons. Estos eventos ocurrieron en la noche, madrugada y al amanecer, lo que confirmó la coexistencia de ambas especies en espacio (selva baja caducifolia) y tiempo (temporada de seca). Los registros fotográficos no mostraron eventos antagónicos y el seguimiento de una especie por la otra sugiere un mutualismo. Confirmamos la coexistencia basada en el comportamiento de seguimiento de U. cinereoargenteus por S. angustifrons y planteamos que son especies mutualistas en temporada seca y en la selva baja caducifolia.
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