Carapace Length-Weight and Width-Weight Relationships of Mud Crab Scylla serrata (Forsskål, 1775) from Ye Estuary, Mon Coastal Area

Year 2025, Volume: 7 Issue: 2, 248 - 254, 31.08.2025

Zarni Ko Ko

Abstract

The current study was attempted to determine the basic biological information such as length weight relationship and condition factor of on Scylla serrata from Ye Estuary, Southern Mon Coastal Area during the period of January-October 2022. The average value of male and female crabs was 6.12±0.73 in length, 6.80±2.24 in width and weighing between 40 and 440 g were collected and analyzed. The sex ratio of total collected samples (male: female) was 1:1.42. The carapace length weight relationships of total samples showed logarithmic equations as follow: Log W = 1.245 Log CL + 0.9994 for male, Log W = 0.3553 Log CL + 1.6287for female and Log W = 0.642 Log CL + 1.4303 for combined sex. While the carapace width weight relationships are as follow: Log W = 1.3455 Log CW + 0.844 for male, Log W = 0.9434 Log CW + 1.1683 for female and Log W = 1.0901 Log CW + 1.0549 for combined sex. The b values for the carapace length weight relationship of S. serrata in males and females were 1.245 and 0.3553 and for the carapace width weight relationship in males and females were 1.3455 and 0.9434, indicated that the growth patterns were negative allometric. The condition factor in males and females were 49.07±23.78 and 39.94±19.16. Moreover, the linear regressions between the carapace length or width and weight were highly significant (p > 0.01).

Keywords

Carapace length/width distribution , Carapace length/width weight relationship , Condition factor , Scylla serrata , Ye Estuary

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