The Population of Mangrove Clam (Polymesoda expansa) in The Panikel Village, Segara Anakan, Cilacap

Widianingsih Widianingsih,Sri Redjeki,Retno Hartati,Elsa Lusia Agus,Ita Riniatsih,Robertus Triaji Mahendrajaya,Hadi Endrawati,Ria Azizah Tri Nuraini

doi:10.1051/e3sconf/202014702018

Abstract

Mangrove clam Polymesoda expansa belonged to the family Corbiculidae. The clam itself is a semi-infauna that lives partially below the soft sediment around the roots of mangrove trees. The purpose of this research is to study the population P. expansa in Panikel Area, Segara Anakan, Cilacap. The size of the sampling site for this research was 10x10 m. Mangrove clam P. expansa was taken by handpicking. Sampling was conducted in April and June 2019. The water quality parameters were taken in-situ. According to the research result, the highest population of P. expansa in Panikel occurred in June amounting to 85 individuals. In the Panikel area, P. expansa has a positive correlation between the total weight and shell length not only in April but also in June. It can be concluded that the mangrove area in Panikel Village is suitable for supporting P. expamsa population.

Highlights

Segara Anakan is one of the largest estuaries on Java Island
The amount of material that enters Segara Anakan through the mouth of the rivers resulted in its waters becoming rich in nutrients, it is a good place for the growth of benthic faunas
This study aims to investigate the population dynamics of Polymesoda expansa from Segara Anakan, Cilacap

Summary

Introduction

Segara Anakan is one of the largest estuaries on Java Island. It is a mangrove shallow coastal lagoon located in South Central Java (108°46’ E–109°03’ E, 8°35’ S–8°48’ S (Fig 1). It is separated from the Indian Ocean by the rocky mountainous Island of Nusakambangan [1]. The Segara Anakan Lagoon is facing serious degradation due to land conversion, illegal logging, and a high level of sedimentation rate [2]. The amount of material that enters Segara Anakan through the mouth of the rivers resulted in its waters becoming rich in nutrients, it is a good place for the growth of benthic faunas. Polymesoda Environment is a benthic fauna that is associated with the mangrove ecosystem

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Discussion

Conclusion