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Artículo

Predicting the distribution of a portunid crab in Patagonian coastal waters

de la Barra, Paula MaríaIcon ; Svendsen, GuillermoIcon ; Romero, Maria AlejandraIcon ; Avaca, Maria SoledadIcon ; Narvarte, Maite AndreaIcon
Fecha de publicación: 03/2020
Editorial: Inter-Research
Revista: Marine Ecology Progress Series
ISSN: 0171-8630
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ecología

Resumen

Ovalipes trimaculatus is a commercially important, cosmopolitan portunid crab.However, environmental conditions that drive its distribution have never been studied. Thus, we aimed to assess the habitat preferences of this species in northern Patagonia by developing a species distribution model. We obtained spatial quantitative data of the crab and its prey species from a benthic survey performed prior to commercial fishing in the area. We used measurements ofenvironmental condition, biomass, richness and evenness of its prey as predictors, and modeled the density of O. trimaculatus through a delta-gamma model, and produced a map of its predicted biomass. Prey biomass, depth and substrate type were the most important variables for predicting the distribution of O. trimaculatus. The model predicts a restricted depth range, with maximumcrab density at 10 m (the shallowest depth sampled) in bottom substrates of relatively fine granulometry, such as silty sand and silt. Prey biomass does not determine crab presence, but, where the crab is present, higher prey biomass correlates with higher crab abundance. Our results accurately predicted 1 of the 2 actual fishing grounds; hence, the model may be a useful tool for localfishers and managers.
Palabras clave: BIOTIC PREDICTORS , OVALIPES TRIMACULATUS , SAN MATÍAS GULF , SPECIES DISTRIBUTION MODEL
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/117064
URL: https://www.int-res.com/abstracts/meps/v638/p95-105/
DOI: http://dx.doi.org/10.3354/meps13249
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Articulos(CIMAS)
Articulos de CENTRO DE INVESTIGACION APLICADA Y TRANSFERENCIA TECNOLOGICA EN RECURSOS MARINOS "ALMIRANTE STORNI"
Citación
de la Barra, Paula María; Svendsen, Guillermo; Romero, Maria Alejandra; Avaca, Maria Soledad; Narvarte, Maite Andrea; Predicting the distribution of a portunid crab in Patagonian coastal waters; Inter-Research; Marine Ecology Progress Series; 638; 3-2020; 95-105
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