Allozyme differences between two endangered Mediterranean killifishes, Aphanius iberus and A. fasciatus (Teleostei : Cyprinodontidae)
Maltagliati, F. (1998). Allozyme differences between two endangered Mediterranean killifishes, Aphanius iberus and A. fasciatus (Teleostei : Cyprinodontidae). Ital. J. Zoolog. 65: 303-306. https://dx.doi.org/10.1080/11250008809386762
In: Italian Journal of Zoology. Taylor & Francis/Mucchi Editore: Modena. ISSN 1125-0003; e-ISSN 1748-5851, more
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| Keywords |
Conservation
Enzymes > Allozymes
Fauna > Aquatic organisms > Aquatic animals > Fish
Fauna > Aquatic organisms > Aquatic animals > Fish > Estuarine organisms > Brackishwater fish
Genetic diversity
Genetic parameters > Genetic distance
Markers > Genetic markers
Mediterranean [Marine Regions]
Brackish water |
| Author keywords |
Genetic variations; Brackish habitats |
| Abstract |
Cellulose acetate electrophoresis of allozymes was used to differentiate the mio endangered Mediterranean killifishes, Aphanius iberus and A. fasciatus. Thirty-eight putative enzyme-coding loci were examined in two populations from the Albuixec lagoon (Spain) and from the Biguglia coastal pond (Corsica). Low within-population polymorphism was detected. The mean number of alleles per locus, percentage of polymorphic loci, and heterozygosity were A = 1.2 (SE 0.1), P-99 = 21.1%, H = 0.050 (SE 0.018) in A. iberus, and A = 1.3 (SE 0.1), P-99 = 28.9%, H = 0.057 (SE 0.019) in A. fasciatus. A general concordance with the Hardy-Weinberg equilibrium was detected. Allelic distribution for 13 loci proved diagnostic at species level. The genetic distance between the two species analysed was relatively high (D = 0.539), indicating considerable genetic divergence between the mio congeneric species. These results represent a valuable basis for further studies on the genetic structure of Mediterranean cyprinodontids to ensure sustainable management of these species. |
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