Download Advances in Polychaete Research: Proceedings of the 7th by Charatsee Aungtonya (auth.), Elín Sigvaldadóttir, Andrew S. PDF

By Charatsee Aungtonya (auth.), Elín Sigvaldadóttir, Andrew S. Y. Mackie, Guðmundur V. Helgason, Donald J. Reish, Jörundur Svavarsson, Sigmar A. Steingrímsson, Guðmundur Guðmundsson (eds.)

ISBN-10: 9048163617

ISBN-13: 9789048163618

In July 2001 specialists from all over the international met in Reykjavik, Iceland to debate a number of problems with polychaete biology. particularly the most recent advancements in cladistic inference of polychaete phylogeny have been awarded. a few reviews utilized contemporary molecular strategies, revealing unknown genetic relationships among the several households of polychaetous annelids. This quantity is of curiosity to experts and scholars looking an advent to the most recent advancements within the box of systematics and ecology of polychaetous annelids. This booklet is one in a chain proposing effects from the foreign Polychaete conferences.

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Extra resources for Advances in Polychaete Research: Proceedings of the 7th International Polychaete Conference held in Reykjavik, Iceland, 2–6 July 2001

Sample text

Maxillary apparatus (Fig. 2D) with maxillary supports, strong and falcate maxilla I+I; max. II with 8+8 teeth, max. III with 8+0 teeth, max. V with 1+1 teeth. First parapo- 39 dia (Fig. 2E) with dorsal cirri swollen at the base and cirriform tip. Length of dorsal cirri exceeds clearly the length of digitiform ventral cirri. From chaetiger 1 a prominent presetal border present. Digitiform postchaetal lobe with an enlarged base up to chaetiger 5. Gills begin on chaetiger 6 in holotype and on chaetiger 7 in two paratypes, bearing 4 simple filaments (Fig.

Complanata but to a lesser degree than in C. cincta. The collar of C. fauchaldi resembles the shape encountered in C. californica (Blake & Kudenov, 1974). Clymenella fauchaldi differs in addition to C. complanata in the presence of flanges in the cephalic plate and by the presence in the former of a funnel terminating in marginal papillae or cirri all equally small. C. fauchaldi is the first species of the genus described from the Antofagasta area and the only species of the subfamily Euclymeninae described from Northern and CentralSouth Chile and also, from the Southeastern Pacific Ocean (Rozbaczylo, 1985).

In posteriormost and still incomplete chaetal bundles a very fine subacicular capillary chaeta may occur. Last few segments may be achaetous. Pygidium rectangular to sub-triangular (Fig. 4C), with three anal cirri: one pair of long lateral ones, pseudoarticulated, partly coiled and wrinkled (longer than 300 μm); one short (ca. 80 μm) digitiform midventral cirrus. Distribution: Australia, Tasmania, Seychelles. Remarks: The taxonomic subdivision of the Eusyllinae into genera is unsatisfactory. This applies especially to the complex of very similar genera that comprises Streptosyllis Webster & Benedict, 1884, Astreptosyllis Kudenov & Dorsey, 1982, Streptospinigera Kudenov, 1983, and Syllides Örsted, 1845.

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