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Gigantism and Partial Parasitic Castration of Chaetognatha Infected with Larval Trematodes

Published online by Cambridge University Press:  11 May 2009

Sifford Pearre
Sifford Pearre
Affiliation:
Normandeau Associates, Inc., 15 Pickering Avenue, Portsmouth, N.H. 03801, U.S.A.
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Extract

INTRODUCTION

Parasite-induced excess growth, or gigantism, has been reported in several mammals (reviewed by Cheng, 1971) and a fish (Summerfelt & Warner, 1970). Work on invertebrates has centred on size increase in gastropod molluscs associated with infections by larval trematodes (reviewed by Cheng, 1967, 1971). Among these the results have been variable, with some host species showing real gains in body size (soft tissue) (Rothschild & Rothschild, 1939), others initial gains with later stunting (Pan, 1965), and still others gains only in shell thickness (Cheng, 1967). Parasitic castration in other invertebrate groups, not necessarily accompanied by gigantism, has been reviewed by Kuris (1974).

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 56 , Issue 2 , May 1976 , pp. 503 - 513
Copyright
Copyright © Marine Biological Association of the United Kingdom 1976

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