The tables are turned : An invasive species under potential threat

Heok Hee NG, Bi Wei LOW, Jeffrey T.B. KWIK, Darren C.J. YEO

Research output: Journal PublicationsJournal Article (refereed)peer-review

8 Citations (Scopus)

Abstract

This study reviews the current distribution of the native Asian common walking catfish (Clarias batrachus) within Singapore, and compares the present distribution to its historical distribution in the last 90 years based on literature records and museum material. We record a severe decline in the distribution of C. batrachus in Singapore concomitant with a sharp increase in the distribution of the invasive African sharptooth catfish (Clarias gariepinus). We review evidence suggesting that the introduction and the establishment of the African sharptooth catfish in Singapore have adversely affected the Asian common walking catfish. The potential displacement by the African sharptooth catfish of the Asian common walking catfish-itself a widespread invader in other parts of Asia and North America-is particularly interesting as an example of a notorious invasive species becoming threatened by an exotic within its own native range.

Original languageEnglish
Pages (from-to)1567-1571
Number of pages5
JournalBiological Invasions
Volume16
Issue number8
DOIs
Publication statusPublished - Jun 2014
Externally publishedYes

Bibliographical note

Funding Information:
The authors thank Shane Lewis for measuring fibrin fiber thickness in scanning electron micrographs. This work was supported by grants HL123912 (A.A.H. and J.W.W.), HL116916, HL142122, and HL139448 (D.B.C.), from the National Institutes of Health, National Heart, Lung, and Blood Institute; by grant 930/ 04 from the Israeli Science Foundation; and by the Program for Competitive Growth at Kazan Federal University.

Funding Information:
This work was supported by grants HL123912 (A.A.H. and J.W.W.), HL116916, HL142122, and HL139448 (D.B.C.), from the National Institutes of Health, National Heart, Lung, and Blood Institute; by grant 930/ 04 from the Israeli Science Foundation; and by the Program for Competitive Growth at Kazan Federal University.

Keywords

  • Alien species
  • Clarias batrachus
  • Clarias gariepinus
  • Freshwater fish
  • Singapore

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