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Title: Interannual variability in the biochemical composition of newly hatched larvae of the spider crab Maja brachydactyla (Decapoda, Majidae)
Author: Rotllant, Guiomar
Simeó, Carles G.
Guerao, Guillermo
Sastre, Marta
Cleary, Daniel F. R.
Calado, Ricardo
Estévez, Alicia
Keywords: 6-year period
Biochemical composition
Energy content
Larval variability
Nutritional condition indices
Wild broodstock
Issue Date: 2014
Publisher: Blackwell Verlag GmbH
Abstract: The spider crab Maja brachydactyla is an important commercial species in Europe and supports intensive fisheries in the NE Atlantic. A field survey was performed to assess long-term and consecutive interannual (2005–2010) variation of the biochemical composition of newly hatched larvae of M. brachydactyla. Larval biochemical profiles differed significantly among years, with pronounced differences being recorded in 2010. Differences among batches of newly hatched larvae were mainly explained by the contribution of triacylglycerols and, to a lesser degree, by protein and lipid content. The use of different nutrition indices is discussed. The biochemical composition of newly hatched larvae from M. brachydactyla was highly variable, even though surveyed broodstock was obtained from the same local population and was always sampled during the same season. The unpredictable biochemical profiles of newly hatched larvae may condition their survival and recruitment. This largely overlooked aspect of larval variability should be considered in future fisheries management strategies and captive production of marine organisms that still rely on wild seeds.
Peer review: yes
DOI: 10.1111/maec.12081
ISSN: 0173-9565
Appears in Collections:CESAM - Artigos
DBio - Artigos

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