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- Title
Morphological and mitochondrial DNA variation revealed an undescribed lineage under the genus <italic>Sperata</italic> (Bagridae) in Bangladesh.
- Authors
Iqbal, Mohammed Mahbub; Alam, M. M. Mahbub; Kabir, Muhammad Anamul; Pálsson, Snæbjörn
- Abstract
Abstract: Catfishes <italic>Sperata</italic> are popular, known for its taste and nutritional value, and are found naturally in wide variety of freshwaters in South Asia. The taxonomy of <italic>Sperata</italic> spp., sampled from Hakaluki Haor in Bangladesh, was re‐evaluated based on morphological variation and DNA barcoding. The collective variation in morphometric characters and mitochondrial DNA revealed an undescribed old and well‐separated lineage under the genus <italic>Sperata</italic> along with two previously known <italic>Sperata aor</italic> and <italic>Sperata seenghala</italic> in Bangladesh. Analyses of morphological traits suggested significant differentiation among <italic>Sperata</italic> species. The variation in mitochondrial DNA supported the distinct lineage and taxonomical discrimination. <italic>Sperata aor</italic> diverged earlier from the new lineage and <italic>Sperata seenghala</italic> with a divergence of 5.39 (CI: 3.91–7.19) Mya (PP > 90). <italic>Sperata seenghala</italic> and the new lineage shared a most recent common ancestry, which diverged from each other around 3.41 (CI: 2.24–4.62) Mya (PP > 90). Thus, the newly identified lineage could be a subspecies of <italic>S. seenghala</italic> or even a species under the genus <italic>Sperata</italic>. The information of the study will be useful for conservation, sustainable management and selective breeding of the putative species, including previously reported <italic>S</italic>. <italic>aor</italic> and <italic>S. seenghala</italic> in Bangladesh.
- Subjects
BAGRIDAE; DNA analysis; GENETIC barcoding; POLYMERASE chain reaction; CYTOCHROME oxidase
- Publication
Acta Zoologica, 2018, Vol 99, Issue 2, p177
- ISSN
0001-7272
- Publication type
Article
- DOI
10.1111/azo.12203