NAFO posted on May 01, 1982 23:26
E. W. Born
Zoological Museum, University of Copenhagen
Universitetsparken 15, DK-2100 Copenhagen, Denmark
Source - Journal of Northwest Atlantic Fishery Science, Volume 3(1): 63-85
ISSN-0250-7408
Born, E.W. 1982. Reproduction in the Female Hooded Seal, Cystophora cristata Erxleben, at South Greenland. J. Northw. Atl. Fish. Sci. 3(1): 63-85. https://doi.org/10.2960/J.v3.a5
Abstract
Reproductive organs of 105 female hooded seals, Cystophora cristata, from South Greenland in spring and early summer periods of 1970-71, with ages for 95 of the specimens, were used to provide supplementary details on follicular development, corpora lutea and corpora albicantia in the period before attachment of the blastocyst. One instance of implantation of a blastocyst was found in a specimen captured on 29 July. From the distribution of age at first ovulation, the attainment of sexual maturity occurs over age-groups 2 to 9, the median age being 3.2 years and the mean age 4.2 years. The average estimate of reproductive success by three indirect methods was found to be 0.936 young per mature female per year, which is very similar to pregnancy rates reported for hooded seals in other parts of the North Atlantic.
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Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - May 1982
Publication Type - Journal Article
Descriptors - Atlantic herring, larvae, recruitment, USA area
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Citation: Born, E.W. 1982. Reproduction in the Female Hooded Seal,
Cystophora cristata Erxleben, at South Greenland. J. Northw. Atl. Fish. Sci. 3(1): 63-85. https://doi.org/10.2960/J.v3.a5