|Hybridization in western Atlantic stone crabs (genus Menippe): evolutionary history and ecological context influence species interactions|
Bert, T.M.; Harrison, R.G. (1988). Hybridization in western Atlantic stone crabs (genus Menippe): evolutionary history and ecological context influence species interactions. Evolution 42(3): 528-544
In: Evolution. Society for the Study of Evolution: Lancaster. ISSN 0014-3820; e-ISSN 1558-5646
Biology > Genetics > Population genetics
Menippe adina Williams & Felder, 1986 [WoRMS]; Menippe mercenaria (Say, 1818) [WoRMS]
|Auteurs|| || Top |
- Bert, T.M.
- Harrison, R.G.
Two distinct taxa of marine crabs (Menippe mercenaria and M. adina, sensu Williams and Felder (1986) interbreed extensively in two disjunct areas of the coastal southeastern United States. The authors used variation in coloration and allele frequencies at three diagnostic loci to examine in detail the structure of the two zones of variation. A narrow hybrid zone in northwest Florida is situated at the junction of the present ranges of the two parental forms, in an area of strong ecological change and hydrological convergence. Despite locus, nonrandom associations of alleles for two diagnostic loci, and an absence of certain combinations of phenotypes and genotypes. The authors suggest that factors inherent to the organism (intrinsic factors) and factors inherent to the environment (extrinsic factors) both act to structure and maintain the two hybrid zones.