| Autor: |
Mergler, Ciara J., Ludwig, Alexandra N., Gall, Brian G. |
| Zdroj: |
Aquatic Ecology; Sep2020, Vol. 54 Issue 3, p889-894, 6p |
| Abstrakt: |
Strategies of resource acquisition are subject to change due to introduced pressures placed upon individual animals. The pressures of food deprivation and competition can lead to a drastic change in previously established strategies of resource acquisition. We conducted a series of trials in which red swamp crayfish (Procambarus clarkii) were either deprived of food or satiated and competition was introduced via a plastic model to necessitate the abandonment of established resource acquisition strategies in favor of risk-insensitive strategies. Crayfish exhibited no difference in behavior when exposed to a singular pressure; however, an interaction between food deprivation and competition was detected and indicates that crayfish responded to food sources more quickly and with more risk-insensitive behavior when a model competitor was present. This combination of factors indicates a complex relationship between resource acquisition strategies and the pressures of acquiring food. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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