Mitochondrial DNA variation of Metapenaeus monoceros (Decapoda, Penaeidae) reveals high genetic variation within Bangladesh with distinct lineages in the Indian Ocean

2021 ◽  
Author(s):  
M. M. Mahbub Alam ◽  
Snæbjörn Pálsson
Keyword(s):  
Mitochondrial Dna ◽  
Genetic Variation ◽  
Indian Ocean ◽  
Dna Variation ◽  
Metapenaeus Monoceros ◽  
The Indian Ocean

Genetic variation of Parapenaeopsis sculptilis (Decapoda, Penaeidae) and reassessment of the phylogenetic relationships within the genus Parapenaeopsis based on mitochondrial DNA variation

2021 ◽  
Vol 34 ◽  
pp. 1
Author(s):  
M. M. Mahbub Alam ◽  
Snæbjörn Pálsson
Keyword(s):  
Genetic Variation ◽  
Indian Ocean ◽  
Bay Of Bengal ◽  
Phylogenetic Relationships ◽  
Population Genetic ◽  
Haplotype Diversity ◽  
Western Indian Ocean ◽  
Dna Variation ◽  
The Indian Ocean ◽  
Population Genetic Variation

The genus Parapenaeopsis is an important group of marine shrimps for wild capture in the Indo-West Pacific region. Phylogenetics of penaeid shrimps is still a debatable issue. This study focuses on the phylogenetic relationships among seven species within the genus Parapenaeupsis, the population genetic variation of Parapenaeupsis sculptilis along Bangladesh coastline of the Bay of Bengal and the phylogeography of P. sculptilis in the Indian Ocean region by analysing cytochrome oxidase subunit 1 barcode (CO1) sequence. No population structure was detected in P. sculptilis collected from two sampling sites along the Bangladesh coastline (AMOVA and Φ ST = ‑0.014, p > 0.05; F ST = 0.061, p = 0.04), which expanded first around 73 (CI: 36‑119) kyr ago. The genealogical relationships in Bangladesh P. sculptilis population are shallow with haplotype diversity (h) of 0.58 and nucleotide diversity (π) of 0.0014. The different P. sculptilis samples from Bangladesh, India and Mozambique of the Indian Ocean revealed connectivity between western Indian Ocean and the Bay of Bengal. The phylogeny within the genus Parapenaeupsis showed a polyphyletic relationships for P. hardickwii and its taxonomy needs to be reevaluated. The study will help for genetic upgradation in aquaculture and monitoring of the population genetic diversity of P. sculptilis.

Genetic variation and relationships among Afrotropical species of Myotis (Chiroptera: Vespertilionidae)

2019 ◽  
Vol 100 (4) ◽  
pp. 1130-1143 ◽  
Author(s):  
Bruce D Patterson ◽  
Paul W Webala ◽  
Julian C Kerbis Peterhans ◽  
Steven M Goodman ◽  
Michael Bartonjo ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Maximum Likelihood ◽  
Indian Ocean ◽  
Nuclear Data ◽  
The Other ◽  
Data Sets ◽  
Species Trees ◽  
Nuclear Introns ◽  
Geographic Structure ◽  
The Indian Ocean

Abstract The genus Myotis is nearly cosmopolitan and the second-most speciose genus of mammals, but its Afrotropical members are few and poorly known. We analyzed phylogenetic and phylogeographic relationships of six of the eight known Afrotropical species using Cytb and sequences from four nuclear introns. Using Bayesian and maximum-likelihood approaches to generate single-locus, concatenated, and species trees, we confirmed prior evidence that the clade containing Afrotropical Myotis also contains both Palearctic and Indomalayan members. Additionally, we demonstrate that M. bocagii is sister to the Indian Ocean species M. anjouanensis, that this group is sister to M. tricolor and the Palearctic M. emarginatus, and find evidence suggesting that M. welwitschii is the earliest-diverging Afrotropical species and sister to the remainder. Although M. tricolor and M. welwitschii are both currently regarded as monotypic, both mitochondrial and nuclear data sets document significant, largely concordant geographic structure in each. Evidence for the distinction of two lineages within M. tricolor is particularly strong. On the other hand, geographic structure is lacking in M. bocagii, despite the current recognition of two subspecies in that species. Additional geographic sampling (especially at or near type localities), finer-scale sampling (especially in zones of sympatry), and integrative taxonomic assessments will be needed to better document this radiation and refine its nomenclature.

Mitochondrial DNA variation within and among populations of the mosquito Aedes albopictus

Genome ◽  
1991 ◽  
Vol 34 (2) ◽  
pp. 288-292 ◽  
Author(s):  
Srinivas Kambhampati ◽  
Karamjit S. Rai
Keyword(s):  
Mitochondrial Dna ◽  
Genetic Variation ◽  
Hong Kong ◽  
Gene Flow ◽  
Genetic Structure ◽  
Aedes Albopictus ◽  
Range Expansion ◽  
Dna Variation ◽  
Restriction Fragment Polymorphism ◽  
Mtdna Polymorphism

A survey of restriction fragment polymorphism in mitochondrial DNA (mtDNA) of 17 populations of the mosquito Aedes albopictus was undertaken. The mtDNA size was estimated to be about 17.5 kbp. The level of polymorphism was low, with over 99% of the fragments being shared in common among the 17 populations. Three populations, Mauritius, Singapore, and Hong Kong, contained individuals with both the ancestral and novel mtDNA haplotypes. We conclude that the low level of mtDNA polymorphism in A. albopictus is a result of recent range expansion and that the mixture of haplotypes is a likely result of human-aided gene flow among populations.Key words: mitochondrial DNA, genetic variation, genetic structure, Aedes albopictus.

scholarly journals East African origins for Madagascan chickens as indicated by mitochondrial DNA

2017 ◽  
Vol 4 (3) ◽  
pp. 160787 ◽  
Author(s):  
Michael B. Herrera ◽  
Vicki A. Thomson ◽  
Jessica J. Wadley ◽  
Philip J. Piper ◽  
Sri Sulandari ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Indian Ocean ◽  
Southeast Asia ◽  
East Africa ◽  
South Asian ◽  
Common Ancestor ◽  
East African ◽  
Mitochondrial Dna Control Region ◽  
History Of ◽  
The Indian Ocean

The colonization of Madagascar by Austronesian-speaking people during AD 50–500 represents the most westerly point of the greatest diaspora in prehistory. A range of economically important plants and animals may have accompanied the Austronesians. Domestic chickens ( Gallus gallus ) are found in Madagascar, but it is unclear how they arrived there. Did they accompany the initial Austronesian-speaking populations that reached Madagascar via the Indian Ocean or were they late arrivals with Arabian and African sea-farers? To address this question, we investigated the mitochondrial DNA control region diversity of modern chickens sampled from around the Indian Ocean rim (Southeast Asia, South Asia, the Arabian Peninsula, East Africa and Madagascar). In contrast to the linguistic and human genetic evidence indicating dual African and Southeast Asian ancestry of the Malagasy people, we find that chickens in Madagascar only share a common ancestor with East Africa, which together are genetically closer to South Asian chickens than to those in Southeast Asia. This suggests that the earliest expansion of Austronesian-speaking people across the Indian Ocean did not successfully introduce chickens to Madagascar. Our results further demonstrate the complexity of the translocation history of introduced domesticates in Madagascar.

Mitochondrial DNA variation of Champsocephalus gunnari Lönnberg (Pisces: Channichthyidae) stocks on the Kerguelen Plateau, southern Indian Ocean

1994 ◽  
Vol 6 (3) ◽  
pp. 347-352 ◽  
Author(s):  
R. Williams ◽  
A. J. Smolenski ◽  
R. W. G. White
Keyword(s):  
Mitochondrial Dna ◽  
Indian Ocean ◽  
Fisheries Management ◽  
Water Depth ◽  
Genetic Heterogeneity ◽  
Genetic Homogeneity ◽  
Genetic Isolation ◽  
Kerguelen Plateau ◽  
Dna Variation ◽  
Champsocephalus Gunnari

The distribution of the icefish Champsocephalus gunnari on the Kerguelen Plateau is confined to the inner shelves of Heard and Kerguelen islands and outlying banks where the water depth is less than 350 m. For fisheries management purposes, it is necessary to know whether fish from the various shelves and banks belong to one single or several separate populations. Analysis of the mitochondrial DNA of fish from various localities using restriction endonclease enzymes revealed no significant genetic heterogeneity between any of the localities. This does not preclude the existence of isolated stocks at the present time but indicates that the populations have been separated too recently for genetic isolation to be manifested, or that low-level interchange of fish between the populations may be maintaining genetic homogeneity.

scholarly journals Restricted Genetic Variation in Populations of Achatina (Lissachatina) fulica outside of East Africa and the Indian Ocean Islands Points to the Indian Ocean Islands as the Earliest Known Common Source

PLoS ONE ◽  
2014 ◽  
Vol 9 (9) ◽  
pp. e105151 ◽  
Author(s):  
Ian Kendrich C. Fontanilla ◽  
Inna Mikaella P. Sta. Maria ◽  
James Rainier M. Garcia ◽  
Hemant Ghate ◽  
Fred Naggs ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Indian Ocean ◽  
East Africa ◽  
Common Source ◽  
The Indian Ocean ◽  
Ocean Islands

Genetic stock structure of bigeye tuna in the Indian Ocean using mitochondrial DNA and microsatellites

2002 ◽  
Vol 60 (3) ◽  
pp. 767-770 ◽  
Author(s):  
S. A. Appleyard ◽  
R. D. Ward ◽  
P. M. Grewe
Keyword(s):  
Mitochondrial Dna ◽  
Indian Ocean ◽  
Stock Structure ◽  
Bigeye Tuna ◽  
Genetic Stock ◽  
The Indian Ocean

scholarly journals Population structure of bigeye tuna (Thunnus obesus) in the Indian Ocean inferred from mitochondrial DNA

2008 ◽  
Vol 90 (1-3) ◽  
pp. 305-312 ◽  
Author(s):  
Hsin-Chieh Chiang ◽  
Chien-Chung Hsu ◽  
Georgiana Cho-Chen Wu ◽  
Shui-Kai Chang ◽  
Hsi-Yuan Yang
Keyword(s):  
Mitochondrial Dna ◽  
Population Structure ◽  
Indian Ocean ◽  
Bigeye Tuna ◽  
Thunnus Obesus ◽  
The Indian Ocean
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