EPA Science Inventory

A field observation of rotational feeding by Neogobius melanostomus

Citation:

Angradi, T. A field observation of rotational feeding by Neogobius melanostomus. Fishes. MDPI AG, Basel, Switzerland, 3(1):1-6, (2018).

Description:

Video documentation was obtained of the invasive benthic fish, Neogobius melanostomus, the round goby, feeding on crushed dreissenid mussels at a depth of 12 m in Georgian Bay of Lake Huron, Canada. Gobies used rotational or twist feeding to tear away particles from crushed mussels. At least 43 examples of this feeding maneuver occur in the video. Up to 120 round gobies/m2 were visible at a time in the video. Mean standard length of gobies was 37 mm. Mean standard length of fish exhibiting twist feeding was larger, 48 mm. Mean size of intact mussels in visible clusters was about 10x20 mm, a size which exceeds the gape width of the largest gobies observed in the video. Gobies are known to use twisting to wrest small attached mussels from the substrates which can be crushed by their pharyngeal teeth. We surmise the behavior observed in the video is an opportunistic manifestation of this inherent behavioral adaptation to exploit a temporary windfall of food.

Purpose/Objective:

The impact of this paper will likely be limited to fish behavior specialists and scientists interested in the impacts of invasive species on the Great Lakes ecosystem.

URLs/Downloads:

https://doi:10.3390/fishes3010005   Exit

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Completion Date: 01/22/2018
Record Last Revised: 02/13/2018
Record Created: 02/13/2018
Record Released: 02/13/2018
OMB Category: Other
Record ID: 339668

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LABORATORY

MID-CONTINENT ECOLOGY DIVISION