ISBN: 9782856536421 - deep water pyramidelloidea of the tropical south pacific: turbonilla and related genera (1 Ergebnisse)

Couverture rigide. Zustand: Comme neuf. Edition originale. Paris 2010. 1 Volume/1. -- Hardback ( 27,6 x 22,5 cm )( 1740 gr) . ------- 436 pages. ************************* '' The Pyramidellidae are a species-rich family of small gastropods which live as ectoparasites on other marine invertebrates. Their subtle variations around a quite homogenous basic morphology make species-level taxonomy extremely difficult. This volume contains the descriptions of 272 species collected in the last 30 years of deep-sea benthic exploration promoted by MNHN and IRD scientists. More than three-quarters of the species are new to science, and more is to come with the other genera to be studied following Turbonilla. This paper takes a step forward towards answering some questions regarding the mega-diverse Indo-Pacific. What is really the order of magnitude of species richness? How are numbers of individuals distributed among species? How heterogeneous is the fauna on a geographic scale? Anselmo Peñas and Emilio Rolán have a considerable background in malacology, mostly European and Eastern Atlantic. Their venture with the Pyramidellidae started with the European and West African species, in a series of papers which appeared in the Spanish malacological journal Iberus, in which new species appeared by the dozens. The move to the Indo-Pacific goes up one order of magnitude, and only the great XIX century expeditions match similar numbers of new species introduced in a single paper. . "" ****************************. …