TY - JOUR
T1 - Morphometric characteristics of crayfish, Cherax gherardiae, from Maybrat, West Papua, Indonesia
AU - Sedik, Yulianus
AU - Rumahlatu, Dominggus
AU - Irawan, Bambang
AU - Soegianto, Agoes
N1 - Funding Information:
Acknowledgements. This study was supported by a grant (Riset Mandat) from Universitas Airlangga. We thank the local people who helped collect the crayfish. Author contributions. Y.S., D.R., B.I., A.S. conceived and designed the research; Y.S., and D.R., and B.I. performed the research; A.S. supervised the research; Y.S., D.R., and A.S. analyzed the data and wrote the paper.
Publisher Copyright:
© 2018 Archives of Polish Fisheries published by Sciendo.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - 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.
AB - 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.
KW - Cherax
KW - Papua
KW - crayfish
KW - morphometry
UR - http://www.scopus.com/inward/record.url?scp=85061776891&partnerID=8YFLogxK
U2 - 10.2478/aopf-2018-0025
DO - 10.2478/aopf-2018-0025
M3 - Article
AN - SCOPUS:85061776891
SN - 2545-0255
VL - 26
SP - 223
EP - 230
JO - Fisheries and Aquatic Life
JF - Fisheries and Aquatic Life
IS - 4
ER -