Journal Article

Barcoding snakeheads (Teleostei, Channidae) revisited: Discovering greater species diversity and resolving perpetuated taxonomic confusions

Conte-Grand, C., Britz, R., Dahanukar, N., Raghavan, R., Pethiyagoda, R., Tan, H.H., Hadiaty, R.K., Yaakob, N.S. and Ruber, L.

Record Number:
4447
Year:
2017
Journal:
PLoS ONE
Volume:
12(9) e0184017
Abstract:
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.
Times Cited:
2
Related Records:
Biju, S.D. and Bossuyt, F. (2003)
New frog family from India reveals an ancient biogeographical link with the Seychelles
Biju, S.D. and Bossuyt, F. (2003)
New frog family from India reveals an ancient biogeographical link with the Seychelles
Bossuyt, F., Meegaskumbura, M., Beenaerts, N., Gower, D.J., Pethiyagoda, R., Roelants, K., Mannaert, A., Wilkinson, M., Bahir, M.M., Manamendra-Arachchi, K., Ng, P.K.L., Schneider, C.K., Oommen, O.V. and Milinkovitch, M.C. (2004)
Local endemism within the Western Ghats-Sri Lanka biodiversity hotspot
Roelants, K., Jiang, J. and Bossuyt, F. (2004)
Endemic ranid (Amphibia: Anura) genera in southern mountain ranges of the Indian subcontinent represent ancient frog lineages: evidence from molecular data
Bossuyt, F., Meegaskumbura, M., Beenaerts, N., Gower, D.J., Pethiyagoda, R., Roelants, K., Mannaert, A., Wilkinson, M., Bahir, M.M., Manamendra-Arachchi, K., Ng, P.K.L., Schneider, C.K., Oommen, O.V. and Milinkovitch, M.C. (2004)
Local endemism within the Western Ghats-Sri Lanka biodiversity hotspot
Roelants, K., Jiang, J. and Bossuyt, F. (2004)
Endemic ranid (Amphibia: Anura) genera in southern mountain ranges of the Indian subcontinent represent ancient frog lineages: evidence from molecular data
Gunawardene, N.R. et al. (2007)
A brief overview of the Western Ghats-Sri Lanka biodiversity hotspot
Gunawardene, N.R. et al. (2007)
A brief overview of the Western Ghats-Sri Lanka biodiversity hotspot
Conte-Grand, C., Britz, R., Dahanukar, N., Raghavan, R., Pethiyagoda, R., Tan, H.H., Hadiaty, R.K., Yaakob, N.S. and Ruber, L. (2017)
Barcoding snakeheads (Teleostei, Channidae) revisited: Discovering greater species diversity and resolving perpetuated taxonomic confusions
Conte-Grand, C., Britz, R., Dahanukar, N., Raghavan, R., Pethiyagoda, R., Tan, H.H., Hadiaty, R.K., Yaakob, N.S. and Ruber, L. (2017)
Barcoding snakeheads (Teleostei, Channidae) revisited: Discovering greater species diversity and resolving perpetuated taxonomic confusions
Anoop, V.K., Britz, R., Arjun, C.P., Dahanukar, N. and Raghavan, R. (2019)
Pangio bhujia, a new, peculiar species of miniature subterranean eel loach lacking dorsal and pelvic fins from India (Teleostei: Cobitidae)
Anoop, V.K., Britz, R., Arjun, C.P., Dahanukar, N. and Raghavan, R. (2019)
Pangio bhujia, a new, peculiar species of miniature subterranean eel loach lacking dorsal and pelvic fins from India (Teleostei: Cobitidae)
Britz, R., Anoop, V.K., Dahanukar, H. and Raghavan, R. (2019)
The subterranean Aenigmachanna gollum, a new genus and species of snakehead (Teleostei: Channidae) from Kerala, India
Kumar, R.G., Basheer, V.S. and Ravi, C. (2019)
Aenigmachanna mahabali, a new species of troglophilic snakehead (Pisces: Channidae) from Kerala, India
Kumar, R.G., Basheer, V.S. and Ravi, C. (2019)
Aenigmachanna mahabali, a new species of troglophilic snakehead (Pisces: Channidae) from Kerala, India
Britz, R., Anoop, V.K., Dahanukar, H. and Raghavan, R. (2019)
The subterranean Aenigmachanna gollum, a new genus and species of snakehead (Teleostei: Channidae) from Kerala, India
Rüber, L., Tan, H.H. and Britz, R. (2019)
Snakehead (Teleostei: Channidae) diversity and the Eastern Himalaya biodiversity hotspot
Rüber, L., Tan, H.H. and Britz, R. (2019)
Snakehead (Teleostei: Channidae) diversity and the Eastern Himalaya biodiversity hotspot
Britz, R., Dahanukar, N., Anoop, V.K., Philip, S., Clark, B., Raghavan, R. and Rüber, L. (2020)
Aenigmachannidae, a new family of snakehead fishes (Teleostei: Channoidei) from subterranean waters of South India
Britz, R., Dahanukar, N., Anoop, V.K., Philip, S., Clark, B., Raghavan, R. and Rüber, L. (2020)
Aenigmachannidae, a new family of snakehead fishes (Teleostei: Channoidei) from subterranean waters of South India
Sidharthan, A., Raghavan, R., Anoop, V.K., Philip. S. and Dahanukar, N. (2020)
Riddle on the riffle: Miocene diversification and biogeography of endemic mountain loaches in the Western Ghats Biodiversity Hotspot
Sidharthan, A., Raghavan, R., Anoop, V.K., Philip. S. and Dahanukar, N. (2020)
Riddle on the riffle: Miocene diversification and biogeography of endemic mountain loaches in the Western Ghats Biodiversity Hotspot