Journal of the Marine Biological Association of India

Mitogenome mapping of the Green Tiger Shrimp Penaeus semisulcatus De Haan, 1844 in Indian waters illuminates lineage diversity from the Indo-West Pacific

Volume 66 Issue 2

N. S. Jeena, G. Tamilmani, M. Sakthivel, S. Rahuman, K. A. Sajeela, V. Vetrivel, K. K. Anikuttan, P. Rameshkumar, B. Johnson, R. Bavithra and A. Gopalakrishnan

doi:10.6024/jmbai.2024.66.2.2491-01

Abstract

Penaeus semisulcatus is a key crustacean species with a patchy distribution along the Indian coast. It constitutes a monospecific fishery along the southeastern coast of India, underscoring its pivotal significance in the economic dynamics of the region. Currently, the species contains two morphotypes with banded and non-banded antennae, presumably representing two species. The former is widespread in the Indo-West Pacific while the latter appears endemic to the Persian Gulf. The present study focuses on the mitogenome characterization of the banded antennae morphotype of P. semisulcatus for the first time from Indian waters to bridge the knowledge gap in genomics in the Indo-West Pacific. The 16,004 base-pair length mitogenome was assembled using genome skimming. It contained 13 protein-coding genes (PCGs), two rRNA genes, 22 tRNA genes, and a noncoding control region, with a basic pan-crustacean gene content and arrangement pattern. The genetic divergence (K2P distance) values using 13 PCGs between the two morphotypes was 16.6% and between the Indian and Pacific mitochondrial lineages was 6.9%. The phylogenetic analysis also inferred the polyphyletic nature of Penaeus sensu stricto and the grouping of both morphotypes with high probability values. This research contributes to the understanding of the genetic diversity of P. semisulcatus and sheds light on its evolutionary processes. The availability of the complete mitogenome serves as a valuable resource for further comparative genomic studies and contributes to proper taxonomic identification, sustainable management, and conservation efforts of this commercially important species.

Keywords

Green tiger shrimp, genome skimming, morphotype, phylogeny

Date : 19-12-2024