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Morphological and genetic investigations of two western Gulf of Mexico menhadens ( Brevoortia spp.)

2007; Wiley; Volume: 70; Issue: sa Linguagem: Inglês

10.1111/j.1095-8649.2007.01326.x

1095-8649

Joel D. Anderson, Dusty L. McDonald,

Fish Ecology and Management Studies

Gulf menhaden Brevoortia patronus , the main target of a commercial fishing industry in the Gulf of Mexico, and finescale menhaden Brevoortia gunteri , a non‐targeted congeneric, have historically been difficult to differentiate. In this study, meristic counts resulted in two of three characteristics that clearly distinguished species, and genetic differences included 1) near fixation for different alleles between species at two of five loci and 2) significantly large divergence ( F ST ) values between species at four loci. Implications for the correct identification of these species and their putative hybrids are discussed.