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Morphometric characteristics of crayfish, Cherax gherardiae, from Maybrat, West Papua, Indonesia Cover

Morphometric characteristics of crayfish, Cherax gherardiae, from Maybrat, West Papua, Indonesia

Open Access
|Feb 2019

Abstract

The objectives of this study were to determine the length-weight relationships (LWRs), chelae length (ChL)-width (ChW) relationships, carapace length (CL)-width (CW) relationships, sexual dimorphism, and condition factor (K) of Cherax gherardiae from Maybrat, West Papua Indonesia. The sex ratio of C. gherardiae was found to be 1.04:1. The LWRs for males, females, and all individuals were W = 0.225L1.96, W = 0.181L2.02, and W = 0.187L2.03, respectively. Males and females exhibited negative allometric growth (b<3). There was no significant difference in lengths between males and females; however, the weight of males was greater than that of females. The K values for males, females, and all individuals were 3.17, 3.09, and 3.13, respectively. The ChL of the crayfish ranged from 1.0 to 7.5 cm, and the ChW ranged from 0.4 to 2.5 cm. The CL of crayfish ranged from 1.6 to 6.0 cm, and the CW ranged from 0.6 to 4.1 cm. Males had longer chelae and carapaces than did females. There was no significant difference in chelae width or carapace width between males and females. The ChL-ChW relationships for males, females, and all individuals were ChW = 0.312ChL + 0.260, ChW = 0.397ChL - 0.050, and ChW = 0.345ChL + 0.119, respectively. The CL-CW relationships for males, females, and all individuals were CW = 0.750CL-0.955, CW = 0.526CL - 0.178, and CW = 0.635CL-0.543, respectively.

DOI: https://doi.org/10.2478/aopf-2018-0025 | Journal eISSN: 2545-059X | Journal ISSN: 2545-0255
Language: English
Page range: 223 - 230
Submitted on: Feb 5, 2018
Accepted on: Nov 14, 2018
Published on: Feb 1, 2019
Published by: Stanisław Sakowicz Inland Fisheries Institute
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2019 Yulianus Sedik, Dominggus Rumahlatu, Bambang Irawan, Agoes Soegianto, published by Stanisław Sakowicz Inland Fisheries Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.