Exploring the threat-sensitive predator avoidance hypothesis on mate competition in two wild populations of Trinidadian guppies
| Autor: | Grant E. Brown, Pierre J.C. Chuard, James W. A. Grant, Indar W. Ramnarine |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Male
0106 biological sciences media_common.quotation_subject Population Zoology Context (language use) Biology 010603 evolutionary biology 01 natural sciences Competition (biology) Predation Courtship Behavioral Neuroscience Animals Humans 0501 psychology and cognitive sciences Sex Ratio 050102 behavioral science & comparative psychology Mating education media_common Poecilia education.field_of_study Reproduction 05 social sciences General Medicine biology.organism_classification Trinidad and Tobago Predatory Behavior Female Animal Science and Zoology Sex ratio |
| Zdroj: | Behavioural Processes. 180:104225 |
| ISSN: | 0376-6357 |
| DOI: | 10.1016/j.beproc.2020.104225 |
| Popis: | The intensity of mate competition is often influenced by predation pressure. The threat-sensitive predator avoidance hypothesis predicts that prey should precisely adjust their fitness-related activities to the level of perceived acute predation risk and this effect should be stronger under high background risk. Individuals should compensate during periods of moderate risk for lost opportunities during high risk. Our study examined the interaction between acute and background predation risk on mate competition. Under laboratory conditions, we explored the effects of acute risk (low vs. high) using chemical alarm cue (AC; control (results presented in Chuard et al. (2016) ) The effects of adult sex ratio on mating competition in male and female guppies (Poecilia reticulata) in two wild populations. Behav Process 129:1−10), 25 % concentration, and 100 % concentration), and population of origin (low vs. high background risk) on mate competition in guppies (Poecilia reticulata). Surprisingly, males favored courtship over forced mating under acute predation risk irrespective of background risk, potentially benefiting from a female preference for bold males. We discuss our results in the context of chemical threat-sensitivity and resource differences in defendability (e.g. mates vs. food). |
| Databáze: | OpenAIRE |
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