Hydroides elegans is an indirectly developing polychaete with equal spiral cleavage, gastrulation by invagination, and a feeding trochophore. Expression of several transcription factors and differentiation genes has been characterized. Comparative analysis reveals evolutionarily conserved roles. For example, the synexpression of transcription factors FoxA and Brachyury suggests homology of prim...

In the first experiment, conducted in a research facility, Litopenaeus vannamei broodstock were fed either a 100% fresh food control treatment (FRE, consisting of frozen squid, oyster, mussel and enriched Artemia biomass in a 2.3:1.4:1.3:1 dry matter ratio) or one of the two treatments in which 50% [dry matter (DM)] of the fresh food was substituted with experimental artificial diets: a dry die...

Geometric constraints represent a class of null models that describe how species diversity may vary between hard boundaries that limit geographic distributions. Recent studies have suggested that a number of large scale biogeographic patterns of diversity (e.g. latitude, altitude, depth) may reflect boundary constraints. However, few studies have rigorously tested the degree to which mid-domain...

To cite this version: Hedman, Jenny Elisabet and Gunnarsson, Jonas S. and Samuelsson, Göran and Gilbert, Franck Particle reworking and solute transport by the sediment-living polychaetes Marenzelleria neglecta and Hediste diversicolor. (2011) Journal of Experimental Marine Biology and Ecology, vol. 407 (n° 2). pp. 294-301. ISSN 0022-0981 Open Archive Toulouse Archive Ouverte (OATAO) OATAO is an...

Serranus scriba is a common member of the coastal fish community in Adriatic Sea, but knowledge about its feeding ecology scarce. The aim this paper to present new evidence food preferences and habits. An innovative non-destructive method fecal pellet analysis was used for study. This does not require sacrificing specimens can be released back into sea alive after laboratory work. results demon...