Length-weight relationship and environmental parameters of Macrobrachium malayanum (J. Roux, 1935) in Senggarang Water Flow, Tanjungpinang City, Riau Islands, Indonesia

Wahyu Muzammil,Kurnia Dwi Handayani,Tri Apriadi,Winny Retna Melani

doi:10.13170/ajas.5.1.14858

Abstract

Macrobrachium malayanum (J. Roux, 1935) is a freshwater prawn occuring in Senggarang Water Flow, Tanjungpinang City, Riau Island, Indonesia. Least concern (LC) status of the IUCN red list threatened species and limited research about this species in Senggarang Water Flow cause this basic research is important to do. The objectives of the study were to examine the length-weight relationship of the M. malayanum in Senggarang Water Flow, Tanjungpinang City, Riau Island Province, Indonesia. A total of 84 samples were used in this study consist of 32 samples in February and 52 samples in April. Length-weight relationship of M. malayanum in February was W= 0.093TL1.425 (R2 = 0.59) and W=0.052TL2.195 (R2 = 0.75). Samples in February and April showed negative allometric growth. A temporal analysis of the negative allometric in b value showed in April (2.195) more larger than February (1.425). Environmental parameters such as temperature, current, dissolved oxygen, pH, salinity, nitrate, and phospate are still appropriate condition. M. malayanum found in substrate type slightly gravelly sand and gravelly sand.

Highlights

Freshwater prawn (Macrobrachium malayanum) is categorized as under a Least Concern (LC) status within the IUCN red list of threatened species
1935) is a freshwater prawn found in Senggarang Water Flow, Tanjungpinang City, Riau Islands, Indonesia
Environmental Parameters Data on environmental parameters were collected as an indicator of M. malayanum living conditions, such as the physical-chemical factors that affects the conditions for the survival of M. malayanum

Summary

Introduction

Freshwater prawn (Macrobrachium malayanum) is categorized as under a Least Concern (LC) status within the IUCN red list of threatened species. This species can be found in areas ranging from southern Thailand, Peninsular Malaysia, Singapore, Sarawak, to Sumatera (Cai et al, 2004; Liu et al, 2007; Ng and Choy, 1990; Purnamasari et al, 2016). The distribution is likely to be affected by the environmental parameters that is tolerated by M Malayanum, such as canopy cover and water pH levels (Cai et al, 2016; Ho et al, 2016). The introduction of non-native freshwater species may affect the freshwater community (Revenga et al 2005; Muchlisin, 2012)

Objectives

Methods

Results

Discussion

Conclusion