The Sipuncula: Their Systematics, Biology, and Evolution

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Cornell University Press, 1994 - 453 pagine

The Sipuncula, a group of ocean-dwelling worms related to annelids and mollusks, play a significant role in the bioerosion of coral reefs and are useful indicators of environmental conditions. The 155 species live in a wide variety ofmarine habitats at all depths, in sand and mud, in burrows in soft rock and dead coral, and inside such protective shelters as mollusk shells. Important food items for fish and invertebrate predators, they also recycle organic wastes and function as bioassay tools for human diseases such as cystic fibrosis and acute cholera. Edward B. Cutler brings together in this volume everything that is known about the entire phylum.An introduction, with practical information about collecting and handling the animals, is followed by Part One, which incorporates new systematic analyses made during the past twenty years and offers illustrated keys to all taxa, replacing the work of A.C. Stephen and S.J. Edmonds. Part Two reviews the past thirty years' work in such areas as ecology, muscular sysetms, blood chemistry, respiration, reproduction, and excretion. Part Three provides a new synthetic perspective on the phylum's zoogeography and evolutionary relationships, both to other phyla and within the phylum. It utilizes information from the fossil record, paleo-oceanographic data, and comparative studies of immunology, physiology, embryology, and anatomy.Edward B. Cutler is Professor of Biology at Utica College of Syracuse University, now on long-term leave at the Museum of Comparative Zoology, Harvard University.

 

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Sommario

Introduction
1
Higher Taxa and Users Guide
17
The Sipunculids
24
The Golfingiids
60
The Phascolionids
107
The Aspidosiphonids
199
A Review
233
Integument and Muscle Systems
249
Reproduction and Regeneration
297
Zoogeography and Evolution
313
Distribution Summary and Cladogenesis
321
Evolution and Phylogenetic Relationships
334
WithinPhylum Relationships
346
Evolutionary Hypothesis
375
Recent Species Inquirenda and Incertae Sedis
381
Bibliography
387

Coelomic Cells and Immune System
256
Respiration Genetics and Biochemistry
271
Digestive System
282
Neurosecretion
291

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Pagina 389 - The Genera Vermium exemplified by various specimens of the animals contained in the orders of the Intestina and Mollusca Linnœi, drawn from nature.
Pagina 402 - In : Proceedings of the International Symposium on Marine Biogeography and Evolution in the Southern Hemisphere.
Pagina 402 - Bergquist. 1982. Phylogenetic relationships within the Invertebrata in relation to the structure of septate junctions and the development of "occluding
Pagina 388 - Beiträge zur Kenntnis der Gephyreen nach Untersuchung der im Göttinger zoologischen Museum befindlichen Sipunculiden und Echiuriden.
Pagina 402 - PE 1986. The taxonomy of some little-known Sipuncula from the northeast Atlantic region including new records. Journal of the Marine Biological Association of the United Kingdom 66:335-341.

Informazioni sull'autore (1994)

Edward B. Cutler was Professor of Biology at Utica College of Syracuse University and an Associate of the Department of Invertebrate Zoology at the Museum of Comparative Zoology, Harvard University.

Informazioni bibliografiche