Two messages about new articles.
*Message: 1.* Dear MARMAM community, My co-authors and I are pleased to announce the publication of our new paper in Journal of Marine Science: S. Cobarrubia-Russo, I. Sawyer, M. Gomez-Alceste and A. Molero-Lizarraga (2021) Site Fidelity and Residency of Tursiops truncatus off the Aragua Coast, Venezuela-First Records of Long Residency. ABSTRACT: This study represents the first comprehensive analysis of the residency patterns of a coastal population of bottlenose dolphin off the coast of Aragua, Venezuela, over a multi-year period. Using photo-identification, the most recent study (2019-2020) identified 56 individuals with the time between encounters from one to 344 days between the first and last sighting. Site Fidelity (SF) and Residence (RES) indices were calculated and Agglomerative Hierarchical Clustering (AHC) modeling was performed, with three patterns of residence obtained: resident (25%), semiresident (17.86%) and transient (57.14%). These results were contrasted with remodeled data from a previous study (2006-2007), showing similar patterns: resident (24.44%), semi-resident (28.89%) and transient (46.67%). Importantly, two individuals were found to have been resident over the extended period. A breeding female sighted for the first time in 2004 and again in 2020 (16 years) and the other from 2005 to 2020 (15 years). This region is an important area for marine mammals, known to support a resident reproductive population over many years, as well as seabirds, sea turtles, whale sharks and fishermen. We recommend that consideration be given to designating the waters as a Marine Protected Area to safeguard the existing population and provide benefit to the surrounding marine environment. The full article is Open Access and available online at: https://doi.org/10.30564/jms.v3i4.3811 Please feel free to contact me (sergio.cobarrubia@gmail.com) with any questions. *Message: 2* Dear MARMAM community, I am pleased to announce the publication of our new paper in Journal of Fisheries Research: S. Cobarrubia-Russo (2021) Home ranges of predators and small sources of marine biomass. ABSTRACT: The meaning of the ecological term home range defines an important ecological aspect of mobile animals and has "evolved" in an attempt to project the most comprehensive definition. In a study of home ranges and ranges of two species of coastal dolphins and fishermen on the western coast of Aragua, Venezuela, South Caribbean, it was observed that these three species coincided in a specific area, so that a spatial analysis determined a small and important source of biomass that provides prey throughout the year for dolphins, fishermen and local people. This note aims to highlight the ease of defining these areas and their conservation importance as sources of protein for humans and other predators Please feel free to contact me (sergio.cobarrubia@gmail.com) to ask for a full copy. -- *Sergio Enrique Cobarrubia Russo* Laboratorio de Ecosistemas y Cambio Global Centro de Ecología Instituto Venezolano de Investigaciones Científicas Venezuela.
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Sergio Cobarrubia