Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features
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AuthorsRueda, L. (Lucía); Moranta, J. (Joan); Abelló, P. (Pere); Balbín, R. (Rosa); Barberá, C. (Carmen); Fernández-de-Puelles, M.L. (María Luz); Olivar, M.P. (María Pilar); Ordines, F. (Francesc); Ramón-Herrero, M. (Montserrat); Torres, A.P. (Asvin Pérez); Valls-Mir, M. (María); Massutí, E. (Enric)
Body condition indices not only are often used as reliable indicators of the nutritional status of individuals but also can they be utilized to provide insights regarding food availability and habitat quality. The aim of this study was to evaluate the connection between the body condition of the demersal species and the environmental features in the water column (i.e. the hydrographic conditions and the potential trophic resources) in two proximate areas, the north and south regions of the Balearic Islands (western Mediterranean), viz., the Balearic sub-basin (BsB) and the Algerian sub-basin (AsB), respectively, with different geomorphological and hydrodynamic features. Body condition indices were calculated for individuals of 21 demersal species including 11 teleosts, 4 elasmobranchs, 3 cephalopods and 3 crustaceans, which represented > 70–77% of the deep water resources, captured by bottom trawling. The morphometric indices, viz., Relative Condition Index (Kn) and Standardised Residuals ...