ISSN:
1432-0886
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary 1. Sperm nuclei within activated eggs of the clam, Spisula solidissima were found to contain a normal haploid amount of DNA while sperm nuclei in inactivated eggs of the same clam contain significantly lower amounts of DNA. 2. The DNA content of sperm nuclei within activated eggs increases to approximately the diploid amount during pronuclei formation whereas the DNA content of sperm nuclei in inactivated eggs does not show any increase. 3. The amount of DNA in spermatozoa in the testis of Spisula varies from one clam to another. Some clams have predominantly the normal haploid amount of DNA while others show significantly lower amounts of DNA in the spermatozoa in the testis. 4. The possible significance of the DNA content of spermatozoa for the activation process of the Spisula egg is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00329731
