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Isozyme analysis and genetic variability among semiterrestrial crabs of the family Camptandriidae (Decapoda: Brachyura: Ocypodoidea) from the coastal areas of Pakistan

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Title Isozyme analysis and genetic variability among semiterrestrial crabs of the family Camptandriidae (Decapoda: Brachyura: Ocypodoidea) from the coastal areas of Pakistan
 
Creator Aziz, U
Saher, N U
Kamal, M
 
Subject Camptandriid
Gene flow
Interspecific
Intraspecific
Isozyme
North Arabian
 
Description 242-248
Genetic diversity within different Camptandriid species and their populations have been investigated using isozyme
electrophoresis from the North Arabian coast of Pakistan. Patterns of a total of eight isozymes including Amylase,
Carbonate anhydrates, Catalase, Creatine kinase, Glucose 6 phosphate dehydrogenase, Octanol dehydrogenase, Peroxidase
and a general protein were analyzed within three Camptandriid crab species (Manningis arabicum (DA Jones & Clayton,
1983), Opusia indica (Alcock, 1900) and Nasima dotilliformis (Alcock, 1900)) and their populations. The calculated mean
number of alleles per locus was 1.26±0.1; the percentage of polymorphic loci per population ranged between 7.45 – 33.3 %;
the observed heterozygosity ranged between 0.033 – 0.124; and the expected heterozygosity ranged from 0.032 – 0.14.
Intraspecific studies showed that the coefficient of gene differentiation among populations was low (FST = 0.032), indicating
that only 3.2 % of the total genetic diversity comes from inter-population differences; while the remaining 96.8 % comes
from intra-population differences. The intraspecific genetic distance was calculated as 0.000 – 0.008 (average = 0.002), and
the gene flow among the populations of O. indica and N. dotilliformis was calculated as 1.57 to 0.824, respectively.
Interspecific Nei's genetic distance calculated using allele frequencies were 0.474 between N. dotilliformis and M. arabicum,
0.505 between N. dotilliformis and O. indica, and 0.658 between O. indica and M. arabicum which showed that O. indica
and M. arabicum is genetically closer species.
 
Date 2024-03-01T05:32:15Z
2024-03-01T05:32:15Z
2024-02
 
Type Article
 
Identifier 2582-6727 (Online); 2582-6506 (Print)
http://nopr.niscpr.res.in/handle/123456789/63508
https://doi.org/10.56042/ijms.v52i05.8007
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJMS Vol.52(05) [May 2023]