APPLICATION OF ANALYTIC HIERARCHY PROCESS IN SWIMMING ABILITY TEST ON METATIBIAL SPURS OF CRETACEOUS ELCANIDAE (INSECTA,ORTHOPTERA)
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Abstract:
Elcanidae is an extinct family of orthopteran insects ranging in age from the Late Triassic to the early Late Cretaceous, and is mainly characterized by 3 or 4 elongated metatibial spurs which are generally divided into 3 types: short rod-like, long spine-like, and leaf-like metatibial spurs. The Analytic Hierarchy Process(AHP) is employed here in the functional behavior study of the Cretaceous Elcanidae, which is premised on the assumption that elcanids could swim. The analysis shows that elcanids with leaf-like metatibial spurs have a much better swimming ability than those with rod-like and spine-like metatibial spurs. A high diversity of metatibial spurs in Elcanidae indicates a good adaptability for these insects to the waterfront environment in the Cretaceous.
