原文標題：First record of potential Batesian mimicry in an elasmobranch: juvenile zebra sharks mimic banded sea snakes?
摘要 [原文網址]
Various forms of mimicry have been recorded in a large number of marine fishes; however, there have been no records of mimicry for any elasmobranch species. We propose that the distinctly banded neonates of the zebra shark (Stegostoma fasciatum) are Batesian mimics of banded sea snakes (Elapidae). Observations of banded juveniles ofS. fasciatum swimming close to the surface strongly resemble banded sea snakes in colour and body form as well as the undulatory swimming movements. Sea snakes are venomous and are known to defend themselves against predators. Although several shark species prey on them, most species appear to avoid sea snakes as prey items. Juvenile S. fasciatum possess a very long, single-lobed caudal fin that remarkably resembles the broad, paddle-like tail of sea snakes. This may be an adaptation enabling this species to mimic sea snakes, at least in the earliest life stages. There is a need for empirical testing of the hypothesis that juvenile S. fasciatum is a true example of Batesian mimicry, but here we provide evidence that suggests this may be the first example of mimicry in an elasmobranch species.
這篇的作者根據 Rettenmeyer 1970對於判定兩物種間貝氏擬態的關係是否成立，來定義豹紋鯊是否是海蛇的貝氏擬態（詳情請見文章內文）。
現在要判斷兩個物種是否互相擬態的文章越來越複雜，似乎有種要寫出一堆判定是否為擬態的理論才能發表，跟以前作者覺得像就像的趨勢不太一樣了。軟骨魚擬態海蛇這個擬態關係應該是第一次看到，之前的有名例子就是擬態章魚會改變行為擬態海蛇，但提出魚長得像海蛇的這是第一篇。
1 comments
怪了.... 怎麼不說他擬態斑馬海葵的觸手?
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