Conte-Grand, Cecilia; Britz, Ralf; Dahanukar, Neelesh; Raghavan, Rajeev; Pethiyagoda, Rohan; Tan, Heok Hui; Hadiaty, Renny K.; Yaakob, Norsham S.; Rüber, Lukas (2017). Barcoding snakeheads (Teleostei, Channidae) revisited: Discovering greater species diversity and resolving perpetuated taxonomic confusions. PLoS ONE, 12(9), e0184017. Public Library of Science 10.1371/journal.pone.0184017
|
Text
Conte-Grand_2017_PLoS_ONE_Barcoding snakeheads-discovering greater species diversity.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (2MB) | Preview |
Snakehead fishes of the family Channidae are predatory freshwater teleosts from Africa
and Asia comprising 38 valid species. Snakeheads are important food fishes (aquaculture,
live food trade) and have been introduced widely with several species becoming highly invasive. A channid barcode library was recently assembled by Serrao and co-workers to better detect and identify potential and established invasive snakehead species outside their native range. Comparing our own recent phylogenetic results of this taxonomically confusing group with those previously reported revealed several inconsistencies that prompted us to expand and improve on previous studies. By generating 343 novel snakehead coxI sequences and combining them with an additional 434 coxI sequences from GenBank we highlight several problems with previous efforts towards the assembly of a snakehead reference barcode library. We found that 16.3% of the channid coxI sequences deposited in Gen-Bank are based on misidentifications. With the inclusion of our own data we were, however, able to solve these cases of perpetuated taxonomic confusion. Different species delimitation approaches we employed (BIN, GMYC, and PTP) were congruent in suggesting a potentially much higher species diversity within snakeheads than currently recognized. In total, 90 BINs were recovered and within a total of 15 currently recognized species multiple BINs were identified. This higher species diversity is mostly due to either the incorporation of undescribed, narrow range, endemics from the Eastern Himalaya biodiversity hotspot or the incorporation of several widespread species characterized by deep genetic splits between geographically well-defined lineages. In the latter case, over-lumping in the past has deflated the actual species numbers. Further integrative approaches are clearly needed for providing a better taxonomic understanding of snakehead diversity, new species descriptions
and taxonomic revisions of the group.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) 08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Aquatic Ecology |
UniBE Contributor: |
Rüber, Lukas |
Subjects: |
500 Science > 570 Life sciences; biology |
ISSN: |
1932-6203 |
Publisher: |
Public Library of Science |
Language: |
English |
Submitter: |
Marcel Häsler |
Date Deposited: |
08 Jun 2018 14:29 |
Last Modified: |
05 Dec 2022 15:12 |
Publisher DOI: |
10.1371/journal.pone.0184017 |
BORIS DOI: |
10.7892/boris.114944 |
URI: |
https://boris.unibe.ch/id/eprint/114944 |
Actions (login required)
 |
Edit item |