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Biochemical Variation in Alpheus (Decapoda, Caridea, Alpheidae) from the Coast of Texas: Evidence for Cryptic Species

Matthew R. McClure and Ira F. Greenbaum
The Southwestern Naturalist
Vol. 39, No. 1 (Mar., 1994), pp. 63-66
DOI: 10.2307/3672194
Stable URL: http://www.jstor.org/stable/3672194
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Biochemical Variation in Alpheus (Decapoda, Caridea, Alpheidae) from the Coast of Texas: Evidence for Cryptic Species
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Abstract

Ambiguities in the identification and nomenclature of the snapping shrimp, Alpheus heterochaelis, led to a preliminary assessment of allozymic variation in Alpheus from Galveston and Port Aransas, Texas. From a total of 39 animals, eleven loci were resolved, of which 9 were polymorphic. At both localities, these loci were entirely concordant in partitioning the individuals into two discrete electrophoretic groups; 6 loci exhibited alternate alleles without corresponding heterozygotes. The genetic similarity of the two groups was estimated at 0.209. These data support the hypothesis that two species exist within what is currently recognized as A. heterochaelis along the coast of Texas.

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