caa a22 4500 445893389 CHVBK 20180317145623.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10750-011-0753-x doi (NATIONALLICENCE)springer-10.1007/s10750-011-0753-x Variations in the feeding of 0-group bass Dicentrarchus labrax (L.) in managed realignment areas and saltmarshes in SE England [Elektronische Daten] [Leila Fonseca, Steve Colclough, Rob Hughes] The diets of 0-group bass Dicentrarchus labrax were investigated in SE England in the Blackwater Estuary: three managed realignment sites at Tollesbury, Abbotts Hall and Orplands; and two established saltmarshes at Tollesbury and Abbotts Hall. In Summer, small 0-group (15-30mm) bass consumed calanoid and harpacticoid copepods predominantly and left the sites significantly fuller than on entering them (Mann-Whitney, W=5837, P<0.001). In Summer, large 0-group (30-59mm) bass consumed benthic prey, predominantly Carcinus maenas, Nereis spp. and amphipods. These larger bass left Tollesbury managed realignment site, and the established saltmarshes at Tollesbury and Abbotts Hall, significantly fuller than on entry (Mann-Whitney, W=1116, 372 and 229, respectively, all P<0.05), unlike at the Abbotts Hall and Orplands managed realignment sites where they had less time to feed. Early site access and soft sediments for macroinvertebrates improved bass feeding opportunities. A wider range of prey was exploited by large 0-group bass in Autumn than in Summer (ANOSIM, R=0.093, P<0.05) including organisms associated with the vegetation such as chironomids and fulgoromorphs. Microhabitat differences influence the feeding of this recreationally and commercially important species during one of its most vulnerable life stages, however by Autumn, these site differences are mitigated by the opportunistic feeding of 0-group bass. Springer Science+Business Media B.V., 2011 Dicentrarchus labrax nationallicence 0-Group nationallicence Bass feeding nationallicence Saltmarsh nationallicence Managed realignment nationallicence Marine Strategy Framework Directive nationallicence Water Framework Directive nationallicence Fonseca Leila Department for Environment Food and Rural Affairs, Marine and Fisheries Science Unit, Nobel House, SW1P 3JR, London, UK aut Colclough Steve Environment Agency, Thames Region, Rivers House, Abbey Wood, SE2 9AQ, London, UK aut Hughes Rob School of Biological and Chemical Sciences, Queen Mary University of London, E1 4NS, London, UK aut Hydrobiologia Springer Netherlands 672/1(2011-09-01), 15-31 0018-8158 672:1<15 2011 672 10750 https://doi.org/10.1007/s10750-011-0753-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0753-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fonseca Leila Department for Environment Food and Rural Affairs, Marine and Fisheries Science Unit, Nobel House, SW1P 3JR, London, UK aut NATIONALLICENCE 700 1- Colclough Steve Environment Agency, Thames Region, Rivers House, Abbey Wood, SE2 9AQ, London, UK aut NATIONALLICENCE 700 1- Hughes Rob School of Biological and Chemical Sciences, Queen Mary University of London, E1 4NS, London, UK aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 672/1(2011-09-01), 15-31 0018-8158 672:1<15 2011 672 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer