Nonato, Edmundo Ferraz. (1981). [Unpublished thesis] Contribuição ao conhecimento dos anelídeos poliquetas bentônicos da Plataforma Continental Brasileira, entre Cabo Frio e o Arroio Chuí. [Contribution to the knowledge of the benthic polychaete annelids of the Brazilian Continental Shelf from Cabo Frio (RJ) to the Arroio Chuí.]. [thesis / Tese de Livre-Docência]. Instituto Oceanográfico, Universidade de São Paulo, Brazil, 249 pages.

388945

Nonato, Edmundo Ferraz

1981

Instituto Oceanográfico, Universidade de São Paulo, Brazil, 249 pages

Publication

http://www.teses.usp.br/teses/disponiveis/livredocencia/21/tde-23092009-144338/en.php

World Polychaeta Database (WPolyDb). Unpublished, thus the new names are Code unavailable (not nomina nuda unless later used in a publication), but some names have 'leaked' into later publications where they will be nomina nuda.

Available for editors   [request]

[English summary] This work deals with the taxonomy and distribution of benthic polychaetes from the southern Brazilian continental shelf, between Cabo Frio and Chui. As many as 305 species, 20 of them new to science, are referred and some are described and illustrated. Epitokous forms were almost unknown to the Brazilian shelf, with the exception of rare findings of a few heteronereis among algae fronds. No epitokous forms have been caught in normal samplings on the shoreline or off the coast. Reproductive stages of some Nereidae and Syllidae species were obtained during night fishery under intense light. The most frequent or the large specimens are described. One important finding was that many small epitokous forms seem to belong to the same species as those of the large ones. As expected, the whole fauna contains mostly warm-temperate water species but also a few ones common to the north-eastern Brazilian fauna and others from cold waters of the Antarctic Sea boundaries, the latter, probably, a consequence of the Malvinas Current action, running deep into the sea and reaching the Cabo Frio latitude. I am convinced that the prospective polychaetes population of southern Brazilian waters is by far richer and more diversified than that which is being recorded in recent samplings, not only the shelf polychaetes fauna but mainly that from the deepest regions as the socalled canyons running from the coast line. Information concerning the near-bottom hydrology is essential to the knowledge of the real habitat where the epi- and endofauna live and reproduce. Iam afraid that the correct understanding of the polychaetes life-span and distribution processes could not be based only on studies of the "life history" of selected species carried out under laboratory conditions. This is true for Poecilochaetus species whose 'drifting làrvae" are very abúndant in plankton samples all over the world but adults or mature specimens are quite rare. Field studies concerning their behaviour or at least- that of the commonest species is a need.

Brazil

Systematics, Taxonomy

Annelida
Polychaeta

RIS (EndNote, Reference Manager, ProCite, RefWorks)
BibTex (BibDesk, LaTeX)

[Back to search]