Informe de monitoreo de tortugas marinas – 2008

Habitat use of black turtles (Chelonia mydas) in San Ignacio lagoon, Mexico

Jesse Senko1, Volker Koch2, William Megill3

1 University of Florida, Gainesville, FL, USA,
2 Universidad Autónoma de Baja California Sur, La Paz, BCS, Mexico;
3 University of Bath, Bath, England, U;

Introduction

San Ignacio Lagoon is part of the El Vizcaino Biosphere Reserve. The lagoon is shallow, protected, and serves as an important feeding and developmental area for the east Pacific green or black turtle, Chelonia mydas (Nichols 2003), which is currently listed as endangered (IUCN 2004). Black turtles, like most sea turtles, utilize several different habitats within their lifetime (Hirth 1997, Nichols 2003). Arguably the most important habitats for black turtles are neritic foraging areas where juveniles may spend 20 years or more (Seminoff et al. 2002a, Koch et al. 2007) until they reach maturity (Nichols 2003). Although recent studies (Seminoff et al. 2002b, Brooks 2005, Seminoff and Jones 2006) have provided a framework for spatial ecology of black turtles on their foraging areas, little detailed information is available regarding habitat use and movement patterns on a fine scale. Entender los requerimientos espaciales de las tortugas marinas durante esta etapa de vida tan crítica es fundamental para su conservación (Bjorndal 1997, Nichols 2003). Aquí reportamos los resultados preliminares del movimiento en escalafina y los patrones de actividad de tortugas prietas inmaduras. Esta investigación además provee de futuros objetivos , metas e iniciativas.

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