Prejs A
Department of Hydrobiology, University of Warsaw, Nowy Świat 67, 00-046, Warsaw, Poland.
Oecologia. 1987 May;72(2):259-262. doi: 10.1007/BF00379276.
In a previous study (A. Prejs and K. Prejs in press) we found that at the end of the dry season small fish species trapped together with piscivorous fish in small, shallow pool varied in their level of food intake. The two smallest of these species fed little, whereas larger species fed at high rate. By examining the species and size composition of the diet and gape limitations of predatory species, I found that the decreased feeding rate of small fish was in response to a high risk of predation by gape-limited predators. The reduction of feeding rate was very substantial when compared to that of the same species in predator free area.
在之前的一项研究中（A. 普雷伊斯和K. 普雷伊斯，即将发表），我们发现，在旱季结束时，与食鱼性鱼类一同被困在小而浅的水池中的小型鱼类，其摄食水平各不相同。其中最小的两个物种进食很少，而较大的物种则进食量很大。通过检查捕食性物种的食物种类和大小组成以及口裂限制，我发现小型鱼类摄食率的下降是对口裂限制型捕食者高捕食风险的一种反应。与在无捕食者区域的同一物种相比，摄食率的降低非常显著。
