Tachamo r d (1 risultati)

The initial volume on the invertebrate fauna of the Ganga river system. The book contains 227 species which were collected and studied by the authors during the last decade. The Mollusca are altogether represented with 108 species, 49 Bivalvia and 59 Gastropoda. The Annelida were recorded with 6 Polychaeta, 70 Oligochaeta and 33 Hirudinida. The Crustacea are included with 11 examples of Branchiopoda, Mysidacea, Amphipoda, Isopoda and few Decapoda crabs. 19 invertebrate species are described new to science. A zoogeographical analysis of the Gangetic basin is given together with a brief discussion of marine elements, brackish water biocoenotic region and certain records of invasive species. The work may be used for identification of species with the help of figures. Instead of using only text descriptions, one can simply compare the invertebrates with the figures to get a first result with the pictorial catalogue. Ecological assessment approach is described with the application of three different indices. 263 pp., 68 (partly col.) pls with 722 figs, br. 4.…