CHEMICAL ALARM SIGNALS INCREASE THE SURVIVAL-TIME OF FATHEAD MINNOWS (PIMEPHALES-PROMELAS) DURING ENCOUNTERS WITH NORTHERN PIKE (ESOX-LUCIUS)

被引：191

作者：

MATHIS, A

SMITH, RJF

机构：

[1] Department of Biology, University of Saskatchewan, Saskatoon

来源：

BEHAVIORAL ECOLOGY | 1993年 / 4卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

ALARM SIGNALS; SCHRECKSTOFF; PREDATION; SHOALING; COVER; SURVIVAL; FATHEAD MINNOWS; NORTHERN PIKE; PIMEPHALES-PROMELAS; ESOX-LUCIUS;

D O I：

10.1093/beheco/4.3.260

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

We tested the hypothesis that exposure to a conspecific alarm pheromone improves survival of fathead minnows (Pimephales promelas) during staged encounters with an unfamiliar predator (northern pike: Esox lucius). Minnows exposed to the alarm pheromone survived 39.5% longer than controls. This difference in survival time appeared to result not from direct inhibition of the pike but rather from some aspect of the minnows' antipredator behavior. Minnows exhibited significant increases in both shoaling and shelter use after exposure to the alarm pheromone. For control minnows, the degree of shoaling was positively correlated with survival time, suggesting that increased shoaling is an effective antipredator response. This study provides the first direct experimental evidence that chemical alarm signals in fishes improve survival of receivers.

引用

页码：260 / 265

页数：6

共 38 条

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