Abstract：
:Between 2000 and 2002, three artisanal landing sites were sampled in southern Chile, with data on population structure and reproductive development collected from 5477 yellownose skates Zearaja chilensis. Total length (L(T) ) ranged from 33 to 158 cm for females and 34 to 155 cm for males. No sexual dimorphism was evident in disc size (length or width) or in L(T)-mass relationships. The smallest mature female was 95 cm L(T) and the size at which 50% were mature (L(T50) ) was 109 cm. Males matured between 80 and 90 cm L(T) with a L(T50) of 88 cm. Although the largest Z. chilensis captured by the artisanal fishery was 155 cm L(T) , 89% of landings comprised relatively small, immature fish. This situation may compromise the stock integrity if intrinsic vulnerability and probable long-life span of Z. chilensis are considered. Consequences for the survival of the species and possible signs of a fishery collapse must be reviewed by management authorities by consideration of both artisanal and industrial landings in Chile.
journal_name
J Fish Bioljournal_title
Journal of fish biologyauthors
Bustamante C,Vargas-Caro C,Oddone MC,Concha F,Flores H,Lamilla J,Bennett MBdoi
10.1111/j.1095-8649.2011.03164.xsubject
Has Abstractpub_date
2012-04-01 00:00:00pages
1213-26issue
5eissn
0022-1112issn
1095-8649journal_volume
80pub_type
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