Individual specialized foraging repertoires in the piscivorous cichlid fish Lepidiolamprologus profundicola
Individual specialized foraging repertoires in the piscivorous cichlid fish Lepidiolamprologus profundicola
复制标题
鱼食性丽鱼科鱼类 Lepidiolamprologus profundicola 的个体专门觅食能力
作者：
M. Kohda
抽象抽象。描述了坦噶尼喀湖18条单独鉴定的食鱼性慈鱼的捕食行为。在狩猎时，这一物种的个体瞄准、猛烈攻击并试图捕获各种猎物鱼。大多数个体只展示了9种有记录的狩猎技巧中的几种，每一种都与特定的微生境有关。在超过4个月的时间里，这些专业化认证是一致的。每条鱼的狩猎专业性并不是简单地反映每一捕食者所遇到的潜在狩猎地点的相对丰富性；它们并不总是归因于种内竞争或表型(大小、性别、颜色模式)；它们也与特定的猎物物种无关。捕获成功率低，未能捕获是由于猎物鱼快速逃逸所致。这表明个体的专门觅食行为主要是通过学习来发展的。
Abstract Abstract. Hunting behaviour is described for 18 individually identified fish of the piscivorous cichlid Lepidiolamprologus profundicola in Lake Tanganyika. When hunting, individuals of this species aim at, dash at and try to capture various kinds of prey fish. Most individuals exhibited only a few of nine documented hunting techniques, each of which was related to a particular microhabitat. These specializations were consistent during periods of more than 4 months. The hunting specializations of each fish were not a simple reflection of the relative abundance of the potential hunting places that each predator encountered; they were not always ascribable to intraspecific competition or phenotypes (size, sex, colour patterns); nor were they associated with specific prey species. Capture success rate was low, and failures to capture were due to rapid flight of the prey fish. It is suggested that individual specialized foraging behaviour was developed mainly through learning.