Coelogynopora schockaerti n. sp. (Proseriata: Coelogynoporidae) is described from the northwestern Gulf of Lion, Mediterranean. Only a few representatives of this genus are reported from Mediterranean marine sandy shores and only from the northwestern to central Mediterranean, but all of these species also occur outside the Mediterranean. So far, C. schockaerti n. sp. is the only species exclusively known from the Mediterranean. The species is solely encountered in the Gulf of Lion, a coldwater pocket in the Mediterranean and can, therefore, be considered as a remnant of an ancient coldwater platyhelminth fauna. C. schockaerti n. sp. is characterized by the shape and size of the spines of the male copulatory organ and the presence, orientation, shape and size of the two accessory spines. An identification key is given for the entire genus.
The zooplankton of Tudor Creek, a mangrove estuary in Kenya, was investigated from November 1984 to October 1985 at monthly intervals. One hundred and two copepod species were identified of which twelve were abundant. Densities are given for these species and their seasonal fluctuations are discussed.
A comprehensive overview is given of the representatives of the taxon Gallorhynchus Schockaert & Brunet, 1971: the two known species G. simplex and G. mediterraneus of Schockaert & Brunet, 1971, Syltorhynchus schockaerti Noldt, 1989, which is transferred to the taxon Gallorhynchus, and four new species, G. elegans n.sp., G. faroensis n.sp., G. genista n.sp. and G. bidaformis n.sp.. G. schockaerti occurs in the North Sea; all other species were found in the western Mediterranean and in south Portugal.
The mandibleplates of several specimen of the copepod Eurytemora affinis collected from the Westerschelde and the Gironde estuary were studied. Using the 'Edge index' (ITOH, 1970) this species could be classified as an omnivore. Pictures obtained by light and scanning electron microscopy reveal that the mandible teeth of Eo affinis have a molar-like structure, which likely changes in functional morphology with developmental stage, sex and age of the adults. Based on these observations, the desirability to consider the three dimensional structure of copepod mandibles for feeding mode classification is discussed.
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