I-Hsun Ni and Wilfred Templeman
Fisheries Research Branch, Department of Fisheries and Oceans
Northwest Atlantic Fisheries Centre, P. O. Box 5667
St. John's, Newfoundland, Canada A1C 5X1
Source - Journal of Northwest Atlantic Fishery Science, Volume 6(1): 57-63
ISSN-0250-7408
Ni, I-H. and Templeman, W. 1985. Reproductive Cycles of Redfishes (Sebastes) in Southern Newfoundland Waters. J. Northw. Atl. Fish. Sci. 6(1): 57-63. https://doi.org/10.2960/J.v6.a6
Abstract
Rapid field identification of Sebastes mentella, S. fasciatus and small S. marinus is difficult. Thus, redfish species are not distinguished for commercial statistics and the beaked redfishes usually not differentiated in biological sampling, the result being a lack of biological information by species. Knowledge of the ovoviviparous reproductive cycle of Sebastes sp. is important for species differentiation and stock discrimination. Investigations of sexual maturity and spawning in redfishes of southern Newfoundland waters (NAFO Division 3P) were carried out on the basis of 11 520 sex and maturity observations collected from 1957 to 1969. Stages of sexual maturity are described. Monthly changes of maturity condition and maturity factor indicated that beaked redfishes (S. fasciatus) spawned mainly in May/June and S. marinus probably spawned earlier.
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Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - June 1985
Publication Type - Journal Article
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