J. Carscadden, B. Nakashima, and D. S. Miller
Science Branch, Department of Fisheries and Oceans, P. O. Box 5667
St. John's, Newfoundland, Canada A1C 5X1
Source - Journal of Northwest Atlantic Fishery Science, Volume 17: 45-57
ISSN-0250-6408
Carscadden, J., Nakashima, B., and Miller, D.S. 1994. An evaluation of Trends in Abundance of Capelin (Mallotus villosus) from Acoustics, Aerial Surveys and Catch Rates in NAFO Division 3L, 1982-89. J. Northw. Atl. Fish. Sci. 17: 45-57. https://doi.org/10.2960/J.v17.a4
Abstract
Trends in capelin (Mallotus villosus) biomass in NAFO Div. 3L during 1982-89 projected from Canadian acoustic surveys were compared to trends in indices of inshore abundance from aerial surveys and trap catch rates. Trends in the two inshore indices of abundance were significantly correlated with each other but were not significantly correlated with the Canadian series. The major differences occurred during 1986 and 1987. Age-compositions in the inshore mature stock were similar to the age-compositions predicted from the acoustic surveys although the latter tended to underestimate the proportions of older fish. The time series was short and the relationships tested were not always statistically significant, however, the general agreement in trends of all indices engendered confidence in the approach and especially in the acoustic surveys which provide absolute abundance indices which can be used directly for management advice.
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Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - April 1996
Publication Type - Journal Article
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