tailieunhanh - Growth and body condition variation of the giant mudskipper Periophthalmodon schlosseri in dry and wet seasons

This study provides information on the growth and body condition variation of the giant mudskipper Periophthalmodon schlosseri between gender and fish size during dry and wet seasons. A total of 367 fish specimens was collected along mudflat and mangrove forest in Tran De from May 2014 to April 2015. | TAP CHI SINH HOCcondition 2016, 38(3): 352-358 Growth and body variation DOI: GROWTH AND BODY CONDITION VARIATION OF THE GIANT MUDSKIPPER Periophthalmodon schlosseri IN DRY AND WET SEASONS Dinh Minh Quang Can Tho University ABSTRACT: This study provides information on the growth and body condition variation of the giant mudskipper Periophthalmodon schlosseri between gender and fish size during dry and wet seasons. A total of 367 fish specimens was collected along mudflat and mangrove forest in Tran De from May 2014 to April 2015. The sex ratio of this fish was nearly 1:1. This species showed isometric growth as its slope value was close to the standard threshold (= 3), and its length-weight relationship was similar in both dry and wet seasons. Although the condition factor of this mudskipper varied with seasonal change and fish size, it was similar in males and females and close to well-being value (= 1). These results indicated that this fish lives well and can become a potential fish for aquaculture in this area, and provides useful information for our knowledge to other gobiid fishes. Keywords: Periophthalmodon schlosseri, condition factor, isometric growth, length-weight relationship, mudskipper. Citation: Dinh Minh Quang, 2016. Growth and body condition variation of the giant mudskipper Periophthalmodon schlosseri in dry and wet seasons. Tap chi Sinh hoc, 38(3): 352-358. DOI: 0866-7160/. *Corresponding author: dmquang@. INTRODUCTION Knowledge on the relationship between length and weight (LWR) is necessary for assessing fish population and converting fish length into weight estimation [7, 11, 17, 22]. The regression coefficient or slope value (b) obtained from LWR provides useful information for estimating fish growth pattern [8]. Moreover, the condition factor (K) has been used as an indicator to compare fish wellbeing between regions or between fish species [1, 2]. The K varied with fish size, .