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Influence of Some External Factors on the Acrosome Reaction in the Spermatozoa of Homarus americanus Milne-Edwards, 1837

Tereza C. V. Gesteira and K. Halcrow
Journal of Crustacean Biology
Vol. 8, No. 3 (Aug., 1988), pp. 317-321
Published by: Brill on behalf of The Crustacean Society
DOI: 10.2307/1548270
Stable URL: http://www.jstor.org/stable/1548270
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Influence of Some External Factors on the Acrosome Reaction in the Spermatozoa of Homarus americanus Milne-Edwards, 1837
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Abstract

Four experiments were performed to determine the effects of external Ca++, L-cysteine, ammonia, and contact with glass surfaces on the acrosome reaction of spermatozoa of Homarus americanus. Few of the spermatozoa incubated in Ca++-free sea water or in sea water containing L-cysteine showed an acrosome reaction. Many acrosome reactions were observed among spermatozoa incubated in sea water containing Ca++ or ammonia and also when Ca++ was added to spermatozoa suspended in Ca++-free sea water. It is concluded that Ca++ plays an important role in this lobster's acrosome reaction. Incidences of acrosome reactions were higher in suspensions of spermatozoa in Ca++-free sea water that were agitated than in those that were not agitated.

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