Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/62667
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Type: Journal article
Title: Variation in sperm morphology of a murine rodent from South-East Asia: the Greater Bandicoot Rat, Bandicota indica
Author: Thitipramote, N.
Suwanjarat, J.
Leigh, C.
Breed, W.
Citation: Acta Zoologica, 2011; 92(3):201-205
Publisher: Blackwell Science Ltd
Issue Date: 2011
ISSN: 0001-7272
1463-6395
Statement of
Responsibility: 
Natthawut Thitipramote, Jintamas Suwanjarat, Christopher Leigh and William G. Breed
Abstract: In most mammals the male gamete, the spermatozoon, has a fairly consistent, species-specific shape although in a few species some variability is evident. The present study set out to determine the extent of sperm variability in a population of a South-East Asian murine rodent, Bandicota indica, that was sampled during both the breeding and non-breeding periods. We found that, regardless of the time of year when the animals were obtained, males had sperm present in the cauda epididymides but a high degree of variability was always evident including the presence of some grossly abnormal forms. The abundance of abnormal sperm tended to be greater during the non-breeding period. These animals also have relatively small testes, thus the occurrence of the variable sperm populations is consistent with the hypothesis that depressed levels of intermale sperm competition result in a relaxation of the genetic control of male germ cell maturation during spermiogenesis and thus the production of polymorphic sperm populations.
Keywords: sperm polymorphism; Greater Bandicoot Rat; breeding system
Rights: © 2010 The Authors. Journal compilation © 2010 The Royal Swedish Academy of Sciences
RMID: 0020102991
DOI: 10.1111/j.1463-6395.2010.00453.x
Appears in Collections:Environment Institute publications
Pathology publications

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