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Article Title

Growth and Mortality of the Fantail Sole, Xystreurys liolepis (Jordan and Gilbert 1881) off the Western Coast of Baja California, Mexico

Volume

98

Issue

2

First Page

66

Last Page

74

Abstract

Data on growth and mortality were obtained for fantail sole, Xystreu- rys liolepis collected with otter trawls during 1 1 cruises off the western coast of Baja California, Mexico, from April 1988 to December 1990. The Bottom tem- perature varied between 11 to 19°C. In all, 712 X liolepis were caught and over the sampling period the sex ratio of males to females was 1:1.2. Males were smaller than females. The relationship between weight and length is described for males by, W = 1.1013 X 10 5 SL 3 - 121544 and for females by, W = 7.6274 X 10 6 SL 31932 . Von Bertalanffy growth parameters were determined to be: h^ = 443 mm SL, k = 0.16, to = -0.098 total sample, for males by, L M = 354.85 mm SL, k = 0.151, to = -0.918, and for females by, L^ = 444.68 mm SL, k = 0.1636, t = —0.423. The total mortality (Z) rate was 0.62 and the estimated fishing mor- tality (F) was 0.46. Although fantail sole is not a target species of commercial fisheries, it suffers high mortality as part of the bycatch in the shrimp fishery.