TY - GEN
T1 - Length-Weight relationship, sex ratio and condition factor of blue swimming crab (Portunus pelagicus Linnaeus, 1758) from Java Sea Indonesia
AU - Rohmayani, Vella
AU - Pahlevi, Muhammad Reza
AU - Irawan, Bambang
AU - Soegianto, Agoes
N1 - Publisher Copyright:
© 2018 Author(s).
PY - 2018/8/15
Y1 - 2018/8/15
N2 - Few studies have been conducted concerning the crabs population from the Java Sea. The objective of the present study was to determine the length-weight relationship (LWR), sex ratio, and condition factors (K) of Portunus pelagicus from Java Sea Indonesia. The methods for this study were collecting of sample, estimating of carapace length-weight relationship, sex ratio and condition factor. Crab specimens were caught by local fisherman using crab traps during Nov 2016 to Jan 2017. Total length and body weight of crabs were measured to the nearest 0.01 cm and 0.01 g respectively. Male and female crabs were separated to calculate the sample size. The carapace length-weight relationship (LWR) was estimated using the log form of the allometric growth equation. Chi-square analyses were used to compare male and female ratio. The condition factor was calculated according to Fulton's method. The LWRs of males, females, and total individuals were W = 0.033L3.325, W = 0.041L3.183 and W = 0.039L3.222, respectively. The sex ratio of P. pelagicus was 1.45:1 (females/males), was significantly different from the expected 1:1 value. The condition factors for males, females, and total individuals ranged from 5.04 to 8.88, 4.22 to 11.70 and 4.22 to 11.70, respectively.
AB - Few studies have been conducted concerning the crabs population from the Java Sea. The objective of the present study was to determine the length-weight relationship (LWR), sex ratio, and condition factors (K) of Portunus pelagicus from Java Sea Indonesia. The methods for this study were collecting of sample, estimating of carapace length-weight relationship, sex ratio and condition factor. Crab specimens were caught by local fisherman using crab traps during Nov 2016 to Jan 2017. Total length and body weight of crabs were measured to the nearest 0.01 cm and 0.01 g respectively. Male and female crabs were separated to calculate the sample size. The carapace length-weight relationship (LWR) was estimated using the log form of the allometric growth equation. Chi-square analyses were used to compare male and female ratio. The condition factor was calculated according to Fulton's method. The LWRs of males, females, and total individuals were W = 0.033L3.325, W = 0.041L3.183 and W = 0.039L3.222, respectively. The sex ratio of P. pelagicus was 1.45:1 (females/males), was significantly different from the expected 1:1 value. The condition factors for males, females, and total individuals ranged from 5.04 to 8.88, 4.22 to 11.70 and 4.22 to 11.70, respectively.
KW - Java Sea
KW - Portunus pelagicus
KW - allometry
KW - growth
UR - http://www.scopus.com/inward/record.url?scp=85052398359&partnerID=8YFLogxK
U2 - 10.1063/1.5050167
DO - 10.1063/1.5050167
M3 - Conference contribution
AN - SCOPUS:85052398359
SN - 9780735417182
T3 - AIP Conference Proceedings
BT - Inventing Prosperous Future through Biological Research and Tropical Biodiversity Management
A2 - Rohmah, Zuliyati
A2 - Hidayati, Lisna
A2 - Arisuryanti, Tuty
A2 - Maryani, null
A2 - Aristya, Ganies Riza
PB - American Institute of Physics Inc.
T2 - 5th International Conference on Biological Science: Inventing Prosperous Future through Biological Research and Tropical Biodiversity Management, ICBS 2017
Y2 - 15 September 2017 through 16 September 2017
ER -