Contrasting patterns in the vertical distribution of decapod crustaceans throughout ontogeny
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AuthorsTorres, A.P. (Asvin Pérez); Reglero, P. (Patricia); Hidalgo, M. (Manuel); Abelló, P. (Pere); Simão, D.S. (Daniela S.); Alemany, F. (Francisco); Massutí, E. (Enric); dos-Santos, A. (Antonina)
Editor/sMolinero, J.C. (Juan Carlos)
Diel vertical distribution
In marine ecosystems, the most significant migration observed in terms of biomass distribution is the one connected with the vertical movements in the water column. In the present study, the vertical profiles of the mesopelagic shrimps Gennadas elegans, Eusergestes arcticus, Sergia robusta, and the epipelagic Parasergestes vigilax in the Balearic Sea (western Mediterranean), during the stratified (summer) and non-stratified (autumn) hydrographic conditions, were investigated through their ontogeny, from the larval to adult stages. The mesopelagic adults were observed to move down to the deeper layers during the night more than during the daylight hours. Most larvae aggregated within the limits of the upper water column. The P. vigilax larvae were collected only during the stratified period. The first two larval stages vertical distribution indicates that the mesopelagic crustacean spawning could occur at greater depths. During the non-stratified period, the larvae of the mesopelagic ...
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