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Population structure of Litopenaeus schmitti (Decapoda: Penaeidae) from the Brazilian coast identified using six polymorphic microsatellite loci
Author(s) -
Maggioni R.,
Rogers A. D.,
Maclean N.
Publication year - 2003
Publication title -
molecular ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.619
H-Index - 225
eISSN - 1365-294X
pISSN - 0962-1083
DOI - 10.1046/j.1365-294x.2003.01987.x
Subject(s) - biology , litopenaeus , microsatellite , shrimp , decapoda , penaeidae , population , locus (genetics) , gene flow , zoology , fishery , ecology , crustacean , allele , genetic variation , genetics , demography , gene , sociology
The population structure of the only Litopenaeus species occurring in Brazilian waters, the white shrimp L. schmitti , was surveyed by screening six microsatellite loci. High diversity ( H E = 0.863; average number of alleles per locus = 37.8) was found across eight geographical locations (2°S to 27°S). Estimates of overall F ST ( 0.0060) were low but significantly different from zero ( P < 0.05). F ST pairwise estimates and amova revealed a significant discontinuity around a major biogeographical boundary, near Cabo Frio, at 23°S. This separation may have been caused either by historical or on‐going hydrogeographical and/or selective factors.