INVESTIGADORES
YORIO Pablo Martin
artículos
Título:
Energy density empirical predictor models for three coastal crab species in the South Atlantic Ocean
Autor/es:
CIANCIO, J.; SUÁREZ, N.; YORIO, P.
Revista:
JOURNAL OF CRUSTACEAN BIOLOGY
Editorial:
CRUSTACEAN SOC
Referencias:
Lugar: Lawrence, Kansas, USA; Año: 2013 vol. 33 p. 667 - 671
ISSN:
0278-0372
Resumen:
Energy density was measured for key
intertidal and subtidal crab species in the Southwestern Atlantic Ocean.
Empirical models were developed to link energy density to water content
(expressed as dry weight) and the fit to data was compared between different
taxonomic and gender aggregations. Predictive power of models with different
levels of aggregation and the effect of using a model of a surrogate species or
group were also evaluated. Neohelice granulata (Dana, 1851) (3728 J/g wet weight)
contained the highest energy density followed by Cyrtograpsus angulatus Rathbun, 1914 (3334
J/g wet weight), and C. altimanus Dana, 1851 (3042 J/g wet weight). Females (3645
J/g wet weight) showed higher energy density compared to males (3074 J/g wet
weight). Dry weight of whole individuals provided good energy density
predictions, with low predictive error when using species or same genus models
(6.4-9.6% for the median error). Predictive power improved when more specific
levels of taxonomic aggregation were employed. Interestingly, the two
congeneric Cyrtograpsus did not differ in
their energy density predictor model, suggesting a unique model could be used
for this genus. This paper provides valuable inputs for bioenergetic modeling
in coastal ecosystems in the Southwestern Atlantic.