Publications
Primer registro morfométrico y de salud de tortuga carey (Eretmochelys imbricata) en el Parque Nacional Archipiélago de Revillagigedo, México
A juvenile hawksbill sea turtle (Eretmochelys imbricata), a critically endangered species, was recorded for the first time in the Revillagigedo Archipelago National Park, Mexico. The discovery underscores Socorro Island as a vital refuge and feeding habitat for this species, which has experienced significant population decline in the Eastern Pacific. Researchers captured, measured, tagged, and conducted a comprehensive health assessment of the turtle, including hematological analysis, blood biometry, clinical biochemistry, and clinicopathological evaluation. Results confirmed the turtle's healthy condition, providing critical insights into its distribution and conservation status. This study highlights the importance of Socorro Island for the preservation of hawksbill sea turtles in the region.
Evidencia de Comportamiento Reproductivo de Tortuga Verde del Pacífico Oriental (Chelonia mydas) en el Parque Nacional Archipiélago de Revillagigedo, México
Researchers document the first photographic evidence of mating behavior in Eastern Pacific green sea turtles (Chelonia mydas) at two sites within Mexico's Revillagigedo Archipelago, Bahía Azufre on Clarión Island and Bahía Vargas Lozano on Socorro Island. This discovery suggests an extended breeding season beyond previously documented nesting peaks. The study, part of a broader effort to establish baseline data for turtle conservation in the region, combines monitoring efforts with health assessments to better understand reproductive patterns and inform protection strategies for this endangered species.
Primer registro del colibrí barba negra (Archilochus alexandri) en Isla Socorro, Archipiélago de Revillagigedo, México
A groundbreaking discovery has been made on Socorro Island, part of Mexico's Revillagigedo Archipelago: the first recorded presence of the Black-chinned Hummingbird (Archilochus alexandri). This finding significantly enriches the island's biodiversity and expands the known distribution range of this species. Researchers identified three hummingbirds during a November 2017 expedition, distinguishing them from smaller migratory species by their body structure and long beaks. One individual was observed feeding on amole flower nectar (Ipomoea triloba) in mixed scrub vegetation, confirming its presence. This record marks the first hummingbird sighting in the archipelago and the first for the Black-chinned Hummingbird on Socorro Island.
La investigación bioacústica de las aves del Archipiélago de Revillagigedo: un reporte de avance
Bioacoustic research on birds from the Revillagigedo Archipelago reveals distinct vocalization patterns among 12 species, highlighting geographic variations at deme, subspecies, or species levels. The study compares island vocalizations with continental counterparts, documenting significant acoustic events such as female vocalizations in certain species and duets in the Socorro mockingbird. It also explores the potential of bird songs for conservation tasks, including population censuses and sex identification. Spectral analyses were used to characterize these vocalizations, offering insights into behavioral ecology and sexual selection while proposing future research directions for this understudied insular region.
Políticas locales para la preservación de un patrimonio global. El Archipiélago de Revillagigedo, Patrimonio Mundial
The Revillagigedo Archipelago, inscribed as a UNESCO World Heritage Site in 2016, faces systemic challenges in its conservation despite ongoing efforts by institutions and governments. The study highlights the critical need for stronger collaboration among public management bodies, academic institutions, and civil society organizations to meet global preservation standards. While local policies and scientific knowledge development aim to protect this unique natural heritage, their effectiveness is hindered by underlying weaknesses in governance and coordination. This research underscores the importance of integrated strategies to address these gaps and ensure the long-term sustainability of the archipelago's biodiversity.
Dieta y ámbito hogareño del gato feral, Felis catus (Carnivora: Felidae) en la Isla Socorro, Archipiélago de Revillagigedo, México
Research on feral cats (Felis catus) in Isla Socorro, part of the UNESCO-listed Revillagigedo Archipelago, reveals critical insights for their eradication to protect local biodiversity. Analysis of stomach contents from 79 cats showed their diet primarily consisted of domestic mice (22.16%), endemic lizards (Urosaurus auriculatus, 15.09%), anthropogenic waste (15.09%), and insects (Orthoptera, 13.20%). Telemetry tracking of four cats using GPS/VHF collars further uncovered significant differences in home range sizes: males averaged 219.10 hectares, while females averaged 118.86 hectares. These findings are pivotal for planning effective eradication efforts, as they inform the required trapping density and bait distribution to minimize environmental impact during ongoing conservation actions.
First record of the dinoflagellate Prorocentrum panamense (Prorocentrales, dinophyceae) in the Mexican Pacific from the Archipiélago de Revillagigedo
Scientists document the first occurrence of the toxic dinoflagellate Prorocentrum panamense in Mexican Pacific waters, specifically within the UNESCO-listed Revillagigedo Archipelago. During March 2017 sampling across three islands (at depths of 60–70 m and surface temperatures of 21–23 °C), ten cells were identified via plankton net sampling—a notable finding given the species’ association with harmful algal blooms in other regions. This discovery extends its known range northward along the Pacific coast, raising potential implications for marine ecosystems and coastal communities in the area.
Presencia de la paloma turca (Streptopelia decaocto) en el archipiélago de Revillagigedo, México
A notable finding of the Turkish turtle dove (Streptopelia decaocto) in the Revillagigedo Archipelago, Mexico, was documented for the first time at two islands: Clarión and Socorro. Observations between March and July 2015 revealed adult birds associated with human activity, specifically around a naval base and its vessels. This discovery highlights the species' presence in remote, pristine environments influenced by anthropogenic factors. The study underscores the need for further research to assess the distribution, abundance, and ecological impacts of this invasive species on the archipelago's biodiversity.
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