Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
The shallow-water fish assemblage of Isla del Coco National Park, Costa Rica: structure and patterns in an isolated, predator-dominated ecosystem
PDF (English)

Palabras clave

apex predators
Tropical Eastern Pacific
Isla del Coco
shark fishing
marine protected area
endemism
biodiversity hotspot
Costa Rica
grandes depredadores
Pacífico tropical oriental
isla del Coco
pesca de tiburones
áreas marinas protegidas
endemismos
sitios de alta biodiversidad
Costa Rica

Cómo citar

Friedlander, A. M., Zgliczynski, B. J., Ballesteros, E., Aburto-Oropeza, O., Bolaños, A., & Sala, E. (2012). The shallow-water fish assemblage of Isla del Coco National Park, Costa Rica: structure and patterns in an isolated, predator-dominated ecosystem. Revista De Biología Tropical, 60(S3), 321–338. https://doi.org/10.15517/rbt.v60i3.28407

Resumen

La biomasa promedio de peces costeros en el Parque Nacional Isla del Coco en septiembre de 2010 fue de 7,8 toneladas por hectárea, entre las más elevadas halladas jamás en zonas tropicales. Los grandes depredadores representaron el 40% de la biomasa total. La abundancia de tiburones costeros y pelágicos, particularmente las enormes agregaciones de tiburón martillo (hasta 42 individuos por hectárea) y los extensos bancos de carángidos y lutjánidos, muestran la capacidad que tienen los ecosistemas marinos no pescados para albergar elevadas biomasas de peces, y hacen de la Isla del Coco un lugar único en el mundo. No obstante, la abundancia de tiburones parece estar decreciendo desde 1999, probablemente a causa de la creciente presión pesquera en la región y la pesca ilegal en el interior del Parque. Un tiburón de Galápagos marcado se dirigió 255km en dirección a la Isla de Malpelo, Colombia. Estos resultados sugieren que los tiburones realizan importantes movimientos entre áreas marinas protegidas (Isla del Coco, Malpelo, Galápagos) en el Pacífico Tropical Oriental y remarcan la necesidad de una gestión regional de estos animales. Más del 50% de las especies y el 90% de individuos observados en los contajes eran endémicos del Pacífico Tropical Oriental.
https://doi.org/10.15517/rbt.v60i3.28407
PDF (English)

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