Tools
Tools
South, J, Dick, JTA, McCard, M, Barrios-O’Neill, D and Anton, A (2017) Predicting predatory impact of juvenile invasive lionfish (Pterois volitans) on a crustacean prey using functional response analysis: effects of temperature, habitat complexity and light regimes. Environmental Biology of Fishes, 100 (10). pp. 1155-1165. ISSN 0378-1909
|
Text
s10641-017-0633-y.pdf - Published Version Available under License Creative Commons Attribution. Download (711kB) | Preview |
Abstract
The ecological implications of biotic interactions, such as predator-prey relationships, are often context-dependent. Comparative functional responses analysis can be used under different abiotic contexts to improve understanding and prediction of the ecological
impact of invasive species. Pterois volitans (Lionfish) [Linnaeus 1758] is an established invasive species in the Caribbean and Gulf of Mexico, with a more recent invasion into the Mediterranean. Lionfish are generalist predators that impact a wide range of commercial and non-commercial species. Functional response analysis was employed to quantify interaction strength between
lionfish and a generic prey species, the shrimp (Paleomonetes varians) [Leach 1814], under the contexts of differing temperature, habitat complexity and light wavelength. Lionfish have prey population destabilising Type II functional responses under all contexts examined. Significantly more prey were consumed
at 26 °C than at 22 °C. Habitat complexity did not significantly alter the functional response parameters. Significantly more prey were consumed under white light and blue light than under red light. Attack rate was significantly higher under white light than under
blue or red light. Light wavelength did not significantly change handling times. The impacts on prey populations through feeding rates may increase with concomitant temperature increase. As attack rates are very high at low habitat complexity this may elucidate the cause of high impact upon degraded reef ecosystems with lowdensity prey populations, although there was little protection conferred through habitat complexity. Only red light (i.e. dark) afforded any reduction in predation pressure. Management initiatives should account for these environmental factors when planning mitigation and prevention strategies.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 0602 Ecology; 0608 Zoology; 0704 Fisheries Sciences; Fisheries |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QL Zoology |
| Divisions: | Biological & Environmental Sciences (from Sep 19) |
| Publisher: | Springer |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 09 May 2023 11:28 |
| Last Modified: | 09 May 2023 11:28 |
| DOI or ID number: | 10.1007/s10641-017-0633-y |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/19474 |
 |
View Item |