D. B. Atkinson

Department of Fisheries and Oceans, Research and Resource Services
P. O. Box 5667, St. John's, Newfoundland, Canada A1C 5X1

Source - Journal of Northwest Atlantic Fishery Science, Volume 2: 53-56
ISSN-0250-7408

 

Atkinson, D.B. 1981. Partial Length as a Replacement for Total Length in Measuring Grenadiers. J. Northw. Atl. Fish. Sci. 2: 53-56. https://doi.org/10.2960/J.v2.a5

 

The problem of tail breakage and regeneration in grenadiers instigated the initiation of studies to find a suitable partial length measurement as a replacement for the traditional total length measurement. Studies undertaken in 1978 and 1979 on round nose grenadier, Coryphaenoides rupestris, indicated that the partial length measurements, pre-anus length and anal-fin length, were highly correlated with total length. The anal-fin length was considered to be more practical than pre-anus length, as the latter is sometimes affected by distortion of the anus due to air-bladder expansion and extrusion of intestines when the fish are brought to the deep water. Consequently, the Scientific Council of NAFO at its meeting in June 1980 adopted anal-fin length (tip of snout to base of first anal fin ray) as the standard for measuring roundnose and roughhead grenadiers.

PDF

Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - October 1981
Publication Type - Journal Article
Descriptors - grenadiers, length

Citation: Atkinson, D.B. 1981. Partial Length as a Replacement for Total Length in Measuring Grenadiers. J. Northw. Atl. Fish. Sci. 2: 53-56. https://doi.org/10.2960/J.v2.a5