Unknown

Dataset Information

0

The propensity for re-triggered predation fear in a prey fish.


ABSTRACT: Variation in predation risk can drive variation in fear intensity, the length of fear retention, and whether fear returns after waning. Using Trinidadian guppies, we assessed whether a low-level predation threat could easily re-trigger fear after waning. First, we show that background risk induced neophobia after either multiple exposures to a low-level threat or a single exposure to a high-level threat. However, a single exposure to the low-level threat had no such effect. The individuals that received multiple background exposures to the low-level threat retained their neophobic phenotype over an 8-day post-risk period, and this response was intensified by a single re-exposure to the low-level threat on day 7. In contrast, the neophobia following the single high-level threat waned over the 8-day period, but the single re-exposure to the low-level threat on day 7 re-triggered the neophobic phenotype. Thus, despite the single low-level exposure being insufficient to induce neophobia, it significantly elevated existing fear and re-triggered fear that had waned. We highlight how such patterns of fear acquisition, retention, and rapid re-triggering play an important role in animal ecology and evolution and outline parallels between the neophobic phenotype in fishes and dimensions of post-traumatic stress in humans.

SUBMITTER: Crane AL 

PROVIDER: S-EPMC7283299 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

altmetric image

Publications

The propensity for re-triggered predation fear in a prey fish.

Crane Adam L AL   Feyten Laurence E A LEA   Ramnarine Indar W IW   Brown Grant E GE  

Scientific reports 20200609 1


Variation in predation risk can drive variation in fear intensity, the length of fear retention, and whether fear returns after waning. Using Trinidadian guppies, we assessed whether a low-level predation threat could easily re-trigger fear after waning. First, we show that background risk induced neophobia after either multiple exposures to a low-level threat or a single exposure to a high-level threat. However, a single exposure to the low-level threat had no such effect. The individuals that  ...[more]

Similar Datasets

| S-EPMC5550486 | biostudies-literature
| S-EPMC5938473 | biostudies-other
2013-10-21 | E-MTAB-1365 | biostudies-arrayexpress
| S-EPMC5813231 | biostudies-literature
| S-EPMC7991668 | biostudies-literature
| S-EPMC4763262 | biostudies-literature
| S-EPMC4993363 | biostudies-literature
| S-EPMC4748250 | biostudies-other
| S-EPMC4571679 | biostudies-literature
| S-EPMC3256147 | biostudies-literature