Genetic divergence between Auxis thazard and A. rochei based on PCR-RFLP analysis of mtDNA D-loop region
IR@NIO: CSIR-National Institute Of Oceanography, Goa
View Archive Info| Field | Value | |
| Creator |
GirishKumar
Kunal, S.P. Menezes, R.M. Kocour, M. |
|
| Date |
2014-11-20T07:43:27Z
2014-11-20T07:43:27Z 2014 |
|
| Identifier |
Turkish Journal of Fisheries and Aquatic Sciences, vol.14(1-2); 2014; 1-8
http://drs.nio.org/drs/handle/2264/4637 |
|
| Description |
Tunas of genus Auxis are commercially and ecologically important fish of family Scombridae. There is currently no information concerning the genetic divergence between A. thazard and A. rochei. Therefore, a study was conducted to estimate the degree of genetic divergence between two species based on PCR-RFLP analysis of D-loop region (500 bp) of mitochondrial DNA in 100 individuals collected from Tuticorin (India). High level of genetic divergence (9.26%) was observed between A. thazard and A. rochei. Estimates of molecular diversity indices were higher in A. rochei (pi = 3.8808; hd = 0.9641) compared to A. thazard (pi = 2.2514; hd = 0.8441). Based on demographic parameters, population expansion of A. thazard estimated to begin about 67,167 years before present while of founding of A. rochei took place about 114,747 years before present in Indian Ocean. Thus, we conclude that A. rochei represents the ancestral species of genus Auxis.
|
|
| Language |
en
|
|
| Publisher |
Central Fisheries Research Institute (CFRI) Trabzon
|
|
| Rights |
Copyright [2014] Central Fisheries Research Institute (CFRI) Trabzon. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
|
|
| Subject |
Genetic variation
Conservation Tuna Auxis thazard |
|
| Title |
Genetic divergence between Auxis thazard and A. rochei based on PCR-RFLP analysis of mtDNA D-loop region
|
|
| Type |
Journal Article
|
|