Morphometric differences between male and female of Cherax quadricarinatus from Sukkean Village, Toba Lake, Indonesia

Abstract

Morphometrics is important information in taxonomy, due to morphometrics can be used as initial data in characterizing an organism. Therefore, this study aimed to examine the differences in characteristics between males and females of Cherax quadricarinatus that caught from lake in Sukkean Village, Toba Lake, Indonesia. Fish traps were used to catch C. quadricarinatus. A total of 110 C. quadricarinatus caught were measured for morphometric characters using a digital caliper. The 16 characters measured include Total Length, Carapace Length, Body Length, Tail Lenght, Rostrum Length, Carapace Width, Body Width, Tail Width, Rostrum Width, Chela Length, Dactyl Length, Palm Length, Chela Width, Chela total length, Chela corpulence and Body Weigth. The measurement results show that there were 11 characters that were significantly different between males and females. The 11 significantly different characters were Total Body Length, Body Length, Rostrum Length, Carapace Width, Body Width, Rostrum Width, Chela Length, Dactyl Length, Palm Length, Chela Total Length and Total Body Weight. From these data it can be concluded that there were differences in the characters between males and females which can be used as information in describing the characteristics of males and females.