Publication Date:
2021-05-19
Description:
Sillaginids are one of the important fishes in coastal waters of Persian Gulf, whose larvae of
different species are morphologically very similar to each other and identification of them to species
level is very difficult. In this study a total of 4195 Sillaginidae larvae were collected from five inlets
(Shif, Lashkari, Ramleh, Dubbeh, Farakeh) and one sampling site in the coastal area of Bushehr
Province using a Bongo-net. Morphological and genetic methods were used to identity larvae of this
family. The larvae were morphologically divided into two groups, depending on 34 or 38 myomers.
The larvae with 34 myomeres were identified as Sillago sihama. To identify larvae with 38
myomers, 12 individuals of postflexion larvae were selected and the morphological characteristics
such as number of dorsal and anal fins as well as DNA barcoding of COI were used. According to
morphological characteristics, the larvae were divided into two species; Sillago arabica and Sillago
attenuata. Genetic studies were done by sequencing of 625 base pair of COI gene. Genetic
distances calculated using K2P model between these two species was 18% to 19.7% which indicate
that DNA barcoding confirms morphological method and it can be used for identifying younger
larvae whose fin rays have not been developed and are unidentifiable with morphological methods.
Description:
Published
Keywords:
Sillaginid
;
Perciformes
;
Sillaginidae
;
Sillago arabica
;
Sillago attenuata
;
Sillago sihama
;
Cytochrome oxidase subunit
;
Species
;
Identification
;
Larvae
;
DNA
;
Morphological
;
Methods
;
Fish
;
Genetic
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp.1-10
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