Evidence map›Paper›PMID 28931084›Full record

ArticlePloS one2017

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

Cecilia Conte-Grand, Ralf Britz, Neelesh Dahanukar, Rajeev Raghavan, Rohan Pethiyagoda, Heok Hui Tan, Renny K Hadiaty, Norsham S Yaakob, Lukas Rüber

Abstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed.

  1. Article
  2. Comparative Mitogenomics ofAnimals : an open access journal from MDPI · 2026
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  6. Chromosome complements ofComparative cytogenetics · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Cecilia Conte-GrandNaturhistorisches Museum der Burgergemeinde Bern, Bern, Switzerland.
Ralf BritzDepartment of Life Sciences, Natural History Museum, London, United Kingdom.
Neelesh DahanukarIndian Institute of Science Education and Research, Pashan, Pune, Maharashtra, India.
Rajeev RaghavanDepartment of Fisheries Resource Management, Kerala University of Fisheries and Ocean Studies, Kochi, Kerala, India.
Rohan PethiyagodaIchthyology Section, Australian Museum, Sydney, Australia.
Heok Hui TanLee Kong Chian Natural History Museum, National University of Singapore, Singapore, Singapore.
Renny K HadiatyMuseum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Sciences, Cibinong, Indonesia.
Norsham S YaakobForest Research Institute Malaysia, Kepong, Kuala Lumpur, Malaysia.
Lukas RüberNaturhistorisches Museum der Burgergemeinde Bern, Bern, Switzerland.ORCID http://orcid.org/0000-0003-0125-008X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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 GenBank 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.

Indexed as

BiodiversityDNA Barcoding, TaxonomicAnimalsDatabases, GeneticDNAFishesPhylogenySequence Analysis, DNADNA

Identifiers

PMID28931084
PMCPMC5606936

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.