Length-weight relationship and condition factor of silver therapon, leiopotherapon plumbeus (Terapontidae) from two Brackishwater habitats

Issue Date

6-2020

Abstract

This study evaluated the length-weight relationship, (W = aTLb) and condition factor dynamics [K = W/(aTLb)] of endemic silver therapon (Leiopotherapon plumbeus, Kner 1864) based on measurements from specimens collected in two brackish water habitats. Fish specimens were collected from fishponds located in Sampalucan, Orani, Bataan (n=500), and in Almacen river (n=380) in Hermosa, Bataan. Length and weight was affected by sex, sites and seasons. The sexual variation in growth rate as inferred by the length-weight relationship was significant, with females being positively allometric (b=3.11), whilst males were negatively allometric (b=2.88). Spatial variation in growth rate was significant between Sampalucan (b=3.07) and Almacen (b=3.02) despite of both being isometric. The growth coefficient in the wet season displayed isometry (b=3.05), whereas in the dry season, it was negatively allometric (b=2.71). The K values were close to the ideal score of 1. The mean condition factor was significantly influenced by sex (1.023±0.015 for females; 0.949±0.006 for males), sampling sites (0.991±0.005 in Sampalucan; 0.983±0.007 in Almacen), and season (1.017±0.008 in the wet season; 0.974±0.014 in the dry season). The mean condition factors in each month were statistically varied, ranging from 0.974 to 1.04.

Source or Periodical Title

AACL Bioflux

ISSN

1844-8143

Volume

13

Issue

2

Page

1495-1503

Document Type

Article

Physical Description

graphs, tables, references

Language

English

Subject

Almacen river, Bataan, Endemic, Growth rate, Isometry, Morphometry

Digital Copy

Yes

Link to Full Text

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