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New insights from nuclear and mitochondrial markers on the genetic diversity and structure of the Indian white shrimp Fenneropenaeus indicus among the marginal seas in the Indian Ocean

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Title New insights from nuclear and mitochondrial markers on the genetic
diversity and structure of the Indian white shrimp Fenneropenaeus indicus
among the marginal seas in the Indian Ocean
Not Available
 
Creator Basheer,V S
Mandal,A
Bineesh,K K
George,Grinson
Gopakumar,S D
Gopalakrishnan,A
Sajeela,K A
 
Subject Genetic variation
Microsatellites
COI
Population structure
Phylogeography
 
Description Not Available
Genetic variation in wild stocks of a major commercial shrimp, Fenneropenaeus indicus, from the marginal seas in
the Indian Ocean was analysed using polymorphic microsatellite loci and mitochondrial COI gene. The average
observed heterozygosity (Ho=0.44 ± 0.02) and the expected heterozygosity (He=0.73 ± 0.01) were high
across loci and populations indicating high microsatellite variation. Pairwise FST and Bayesian clustering indicated
the occurrence of four genetically distinct stocks out of the eight sampled populations with implications
for specific management approaches. Mantel test for isolation by distance proved that genetic differentiation is
not related to geographic distance between populations. Mitochondrial COI sequence analysis showed concordant
differentiation pattern as well indicated the relevance of COI in population genetics of shrimps. Pairwise
ɸST and phylogenetic and Bayesian analyses revealed four distinct clades, as observed with nuclear markers.
Divergence time analysis revealed the origin and initial divergence of F. indicus corresponds to late Miocene and
divergence to phylogroups in the Pleistocene. BSP analysis presented a long stable population size with a slight
decrease in the late Pleistocene and gradually expanded to the current status. The information here will be useful
in commercial shrimp breeding and selection programmes and management of natural stocks of Indian white
shrimp.
Not Available
 
Date 2021-09-18T04:35:03Z
2021-09-18T04:35:03Z
2019
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/64304
 
Language English
 
Relation Not Available
 
Publisher Not Available