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Prey colonization in freshwater landscapes can be stimulated or inhibited by the proximity of remote predators
- Source :
- Journal of Animal Ecology. 89:1766-1774
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- 1. Recent findings suggest that the colonization of habitat patches may be affected by the quality of surrounding patches. For instance, patches that lack predators may be avoided when located near others with predators, a pattern known as risk contagion. Alternatively, predator avoidance might also redirect dispersal towards nearby predator‐free patches resulting in so‐called habitat compression. However, it is largely unknown how predators continue to influence these habitat selection behaviours at increasing distances from outside of their own habitat patch. In addition, current information is derived from artificial mesocosm experiments, while support from natural ecosystems is lacking. 2. This study used bromeliad landscapes as a natural model system to study how oviposition habitat selection of Diptera responds to the cues of a distant predator, the carnivorous elephant mosquito larva. 3. We established landscapes containing predator‐free bromeliad habitat patches placed at increasing distances from a predator‐containing patch, along with replicate control landscapes. These patches were then left to be colonized by ovipositing bromeliad insects. 4. We found that distance to predators modulates habitat selection decisions. Moreover, different dipteran families had different responses suggesting different habitat selection strategies. In some families, predator‐free patches at certain distances from the predator patch were avoided, confirming risk contagion. In other families, these patches received higher numbers of colonists providing evidence of predator‐induced habitat compression. 5. We confirm that effects of predators in a natural ecosystem can extend beyond the patch in which the predator is present and that the presence or absence of remote predator effects on habitat selection depends on the distance to predators. The notion that perceived habitat quality can depend on conditions in neighbouring patches forces habitat selection studies to adopt a landscape perspective and account for the effects of both present and remote predators when explaining community assembly in metacommunities.
- Subjects :
- 0106 biological sciences
Insecta
context dependence
Oviposition
oviposition site selection
Fresh Water
Biology
risk contagion
010603 evolutionary biology
01 natural sciences
Mesocosm
Predation
habitat compression
Animals
Colonization
Predator
Ecosystem
Ecology, Evolution, Behavior and Systematics
Selection (genetic algorithm)
Larva
Ecology
010604 marine biology & hydrobiology
fungi
Habitat selection
Habitat
Predatory Behavior
Biological dispersal
Female
Animal Science and Zoology
Predation risk
bromeliads
Subjects
Details
- ISSN :
- 13652656 and 00218790
- Volume :
- 89
- Database :
- OpenAIRE
- Journal :
- Journal of Animal Ecology
- Accession number :
- edsair.doi.dedup.....7e2241702ef7ad02e115a873943cd33d
- Full Text :
- https://doi.org/10.1111/1365-2656.13239