caa a22 4500 606226877 CHVBK 20210128101155.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10641-014-0236-9 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0236-9 Competitive interactions for shelter between invasive Pacific red lionfish and native Nassau grouper [Elektronische Daten] [Wendel Raymond, Mark Albins, Timothy Pusack] The invasive Pacific red lionfish (Pterois volitans) poses a threat to western Atlantic and Caribbean coral reef systems. Lionfish are small-bodied predators that can reduce the abundance and diversity of native fishes via predation. Additionally, native predators or competitors appear to have a negligible effect on similarly sized lionfish. Nassau grouper (Epinephelus striatus) are a regionally endangered, large predator found throughout lionfish's invasive range. Because lionfish and Nassau grouper occupy similar habitats and use similar resources, there is potential for competition between these two species. Using large, outdoor in-ground tanks, we investigated how lionfish and Nassau grouper affect each other's behavior by comparing their distance from and use of shelter when in isolation versus when both species were in the presence of each other with limited shelter. We found that Nassau grouper, which displayed a high affinity for shelter in isolation, avoided lionfish in two distinct ways; (1) groupers positioned closer to and used limited shelter more when paired with similarly sized lionfish and (2) grouper moved much further away from shelter when paired with smaller lionfish. We also found that neither large lionfish nor large Nassau grouper preyed upon smaller individuals of the opposite species suggesting that Nassau grouper do not recognize small lionfish as prey. This study highlights how invasive lionfish may affect native Nassau grouper, and suggests that competition for shelter between these two species may be size dependent. Springer Science+Business Media Dordrecht, 2014 Avoidance nationallicence Bahamas nationallicence Refuge nationallicence Shelter dominance nationallicence Size dependence nationallicence Raymond Wendel Department of Zoology, Oregon State University, 3029 Cordley Hall, 97331-9214, Corvallis, OR, USA aut Albins Mark Department of Zoology, Oregon State University, 3029 Cordley Hall, 97331-9214, Corvallis, OR, USA aut Pusack Timothy Department of Zoology, Oregon State University, 3029 Cordley Hall, 97331-9214, Corvallis, OR, USA aut Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 57-65 0378-1909 98:1<57 2015 98 10641 https://doi.org/10.1007/s10641-014-0236-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0236-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Raymond Wendel Department of Zoology, Oregon State University, 3029 Cordley Hall, 97331-9214, Corvallis, OR, USA aut NATIONALLICENCE 700 1- Albins Mark Department of Zoology, Oregon State University, 3029 Cordley Hall, 97331-9214, Corvallis, OR, USA aut NATIONALLICENCE 700 1- Pusack Timothy Department of Zoology, Oregon State University, 3029 Cordley Hall, 97331-9214, Corvallis, OR, USA aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 57-65 0378-1909 98:1<57 2015 98 10641