The influence of the invasive black bullhead Ameiurus melas on the predatory efficiency of pike Esox lucius L.

Authors: Kreutzenberger; Leprieur; Brosse

Source: Journal of Fish Biology, Volume 73, Number 1, July 2008 , pp. 196-205(10)

Publisher: Wiley-Blackwell

Buy & download fulltext article:


Price: $48.00 plus tax (Refund Policy)


The influence of the invasive black bullhead Ameiurus melas on the predatory efficiency of the pike Esox lucius was investigated using an additive experimental design. Pike predatory success on 0+ years roach Rutilus rutilus was significantly reduced in the presence of black bullhead. Among the different hypotheses that may explain such a pattern, the hypothesis of direct competition between pike and black bullhead was not verified, as black bullhead hardly fed on roach. Similarly, pike predatory efficiency did not decrease with turbidity, rejecting therefore the hypothesis of an indirect effect through black bullhead-generated turbidity. Therefore, the reduced predatory efficiency of pike was probably related to behavioural interference between pike and black bullhead. These laboratory results confirm the potential negative impact of black bullhead on native European fauna, with a particular emphasis on pike, which is a top predator considered as vulnerable in some European regions.

Keywords: invasive species; multipredator; predatory efficiency; turbidity

Document Type: Regular Paper


Affiliations: Laboratoire Evolution and Diversité Biologique, U.M.R 5174, CNRS-Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse cedex 4, France

Publication date: July 1, 2008

Related content



Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page