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Speciation in western Atlantic stone crabs (genus Menippe): the role of geological processes and climatic events in the formation and distribution of species
Bert, T.M. (1986). Speciation in western Atlantic stone crabs (genus Menippe): the role of geological processes and climatic events in the formation and distribution of species. Mar. Biol. (Berl.) 93(2): 157-170. https://dx.doi.org/10.1007/BF00508253
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793
Peer reviewed article  
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Trefwoorden
    Biological speciation
    Biology > Genetics > Population genetics
    Genotypes
    Phenotypes
    Menippe De Haan, 1833 [WoRMS]
    Marien/Kust
Auteur  Top 
  • Bert, T.M.
Abstract
    Electrophoretically detectable variation in 38 proteins and color morphology were used to determine the evolutionary relationships of crabs of the genus Menippe (Xanthidae) in the southeastern USA. Both allele frequencies (= genotype) and color morphology (= phenotype) showed that one species. Menippe mercenaria, is probably a taxonomic supergroup composed to two taxa (semispecies). One taxon (the western Gulf form) is distributed from northwest Florida westward through Texas. The second (the peninsular Florida form) ranges though the Florida peninsula from northwest to west central Florida, and in North Carolina. The taxa appear to have hybridized in two discrete regions: in the Gulf of mexico (northwest Florida) and in the Atlantic Ocean (east central Florida to South Carolina). The agreement of patterns of geographic variation in genotypes and phenotypes with the geological record and estimated times of divergence based on genetic distances suggests that the observed patterns are the product of the influence of Late Cenozoic changes in climate and geology.
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