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Growth parameters of deep-water decapod crustaceans in the Northwestern Mediterranean Sea: a comparative approach

Growth parameters of deep-water decapod crustaceans in the Northwestern Mediterranean Sea: a comparative approach,10.1007/s002270050011,Marine Biology

Growth parameters of deep-water decapod crustaceans in the Northwestern Mediterranean Sea: a comparative approach   (Citations: 27)
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Relative and absolute growth were studied in 17 species of deep-water decapod crustaceans, spanning nine families of six different infra-orders, in the Northwestern Mediterranean Sea. The overall maximum abundance of these species lay between 200 m and 750 m (i.e. upper- and mid-slope species). Relative and absolute growth rates were compared by contrasting the slopes of the size–weight relationships for the different species and calculating the von Bertalanffy growth-equation parameters asymptotic length (L ∞ ) and growth rate (k). The size–weight relationships differed significantly as function of the species' life habits. The results revealed a significant decrease in weight relative to size in mesopelagic species (which carry out diel vertical migrations), an almost isometric relationship between size and weight in the less mobile nektobenthic species, and a significant increase in weight relative to size in strictly benthic species. The mean allometric coefficient for each group increased significantly from mesopelagic to benthic species. However, no general trend was observed in the growth-performance index, Φ (an index used to compare absolute growth rates between species, as a function of habit and depth of maximum abundance for all species combined), suggesting that the deep-water decapod crustaceans studied have similar absolute growth rates. Nevertheless, comparison of growth-parameter and growth-performance index values within families did reveal differences. Mesopelagic species of the families Sergestoidae and Pasiphaeidae showed slightly increased growth rates with increasing depth of distribution. Nektobenthic species of the genus Plesionika followed a trend opposite to that shown by mesopelagic species, with a higher growth rate for the shallowest-dwelling species (P. heterocarpus) than the deepest-dwelling species (P. acanthonotus). Taking growth as one of the major components of an organism's energy budget, the growth rates for the decapod crustacean species in this study were significantly lower than those reported in the literature for shallow-water penaeid crustacean species (which are distributed in higher-temperature habitats than deep-water Mediterranean crustaceans) and higher than those reported for mesopelagic myctophid fish species. Hence, the well-defined growth trends shown by deep-water decapod crustacean species in the Northwestern Mediterranean Sea, compared to the less well-defined trends in the other taxa, is discussed in the framework of the overall dynamics of their ecosystem.
Journal: Marine Biology - MAR BIOL , vol. 136, no. 1, pp. 79-90, 2000
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    • ...or Munida sp. (Cartes and Sardà 1993; Sardà and Cartes 1993; Company and Sardà 1998, 2000; Company et al. 2001, 2003, 2004; Puig et al. 2001)...

    Eva Ramírez-Llodraet al. Spatio-temporal variations of biomass and abundance in bathyal non-cru...

    • ...1997; Company and Sardà 2000; Maiorano et al...

    Dimitris Vafidiset al. Population characteristics of four deep‐water pandalid shrimps (Decapo...

    • ...The gonads of Alvinocaris muricola are similar to that of other caridean shrimp from non-chemosynthetic ecosystems, formed by paired organs laying over the digestive gland in the cephalothorax (Bauer, 2004)...
    • ...These non-motile male gametes are an adaptation for fertilization through copulation (Bauer, 2004)...
    • ...This small size of embryos is indicative of planktotrophic larvae with extended development that must feed in the water column to obtain the necessary energy from the several larval instars to postlarva (Bauer, 2004)...
    • ...The production of large embryos that result in large larvae with abbreviated development and/or lecithotrophic larvae has been suggested as an adaptation in deep-sea and high-latitude species to decrease mortality risk in the water column (Bauer, 2004; references within Ramirez-Llodra, 2002)...

    Eva Ramirez-Llodraet al. Reproductive biology of Alvinocaris muricola (Decapoda: Caridea: Alvin...

    • ...The von Bertalanffy equation describes the continuous body growth, but it has been successfully used for the description of somatic growth in moulting species, such as crustaceans (Phillips et al. 1977; Caddy 2003; Mooij et al. 2003)...
    • ...Although the von Bertalanffy equation is a mathematical function for continuous growth and therefore does neither discriminate the separation of life history in instars nor the modelling of events related to the moulting process (Caddy 2003), we confirmed its adequacy for the description of body growth of D. magna, and its applicability for the analysis of experimental data from this species...

    Fernando Martínez-Jerónimo. Description of the individual growth of Daphnia magna (Crustacea: Clad...

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