Predator presence alters prey diet composition but not quantity in tide pool fish interactions

Gilby, B. L., Tibbetts, I. R., Van Bourg, J., Delisle, L. and Burfeind, D. D. (2017) Predator presence alters prey diet composition but not quantity in tide pool fish interactions. Hydrobiologia, 795 1: 257-265. doi:10.1007/s10750-017-3133-3


Author Gilby, B. L.
Tibbetts, I. R.
Van Bourg, J.
Delisle, L.
Burfeind, D. D.
Title Predator presence alters prey diet composition but not quantity in tide pool fish interactions
Journal name Hydrobiologia   Check publisher's open access policy
ISSN 1573-5117
0018-8158
Publication date 2017-07-01
Sub-type Article (original research)
DOI 10.1007/s10750-017-3133-3
Open Access Status Not yet assessed
Volume 795
Issue 1
Start page 257
End page 265
Total pages 9
Place of publication Dordrecht, Netherlands
Publisher Springer Netherlands
Language eng
Formatted abstract
Understanding species interactions and how they change in the presence of a predator or competitor is a fundamental goal for ecologists. We tested such interactions in an intertidal soft sediment pool system where both the sand goby Favonigobius lentiginosus and post-settlement whiting Sillago spp. consume meiofaunal prey, but F. lentiginosus also consumes Sillago spp. We quantified changes in fish gut content volumes and composition (i.e. meiofaunal group diversity and abundances) in response to the presence of a predator/prey and to different fish densities (two, four or six total individuals) in experimental aquaria. We found no significant density-dependent effects on either the predator or prey species, likely due to meiofaunal prey oversupply; however, the diet composition of the prey species Sillago spp. changed significantly in the presence of their potential predator. We conclude that lower consumption of meiofaunal amphipods in the presence of gobies suggests that whiting perhaps maintain their gut fullness by preferentially targeting larger amphipods.
Keyword Competition
Favonigobius
Meiofauna
Predation
Predator–prey relationship
Sillago
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Biological Sciences Publications
 
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