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Journal of Experimental Biology, Vol 62, Issue 2 481-486, Copyright © 1975 by Company of Biologists

JOURNAL ARTICLES

Sperm concentration and fertilization rate in Bufo arenarum (Amphibia: Anura)

MO Cabada

The influence of sperm concentration upon the fertilization rate of Bufo arenarum oocytes was determinated. The experimental results were analysed according to the theories of Rothschild and Swann, and Hultin and Hagstrom for Psammechinus miliaris. The experimental results agreed with the predictions of the latter theory. Since Bufo arenarum and Psammechinus miliaris oocytes differ in both size and disposition of jelly envelopes, the postulations of Hultin and Hagstrom's theory appear to have a general validity.


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K. NAKATSURU and D. L. KRAMER
Is Sperm Cheap? Limited Male Fertility and Female Choice in the Lemon Tetra (Pisces, Characidae)
Science, May 14, 1982; 216(4547): 753 - 755.
[Abstract] [PDF]


© The Company of Biologists Ltd 1975