Ecology, Environment and Conservation Paper

EFFECTS OF WATER SALINITY ON SOUND PRODUCTION OF THE SPINY LOBSTER PANULIRUS HOMARUS (LINNAEUS, 1758) CULTIVATED IN THE LABORATORY

Petrus Hary Tjahja Soedibyo, Amron Amron Isdy Sulistyo, Rizqi Rizaldi Hidayat and Hedi Perdana Wijayanto

Abstract

Lobster Panulirus homarus is one of the aquatic invertebrates that produce sound with certain characteristics. The sound that produced is a representation of how this species to eat, protect itself, and as a response to environmental changes. Variability on behavior will produce different characteristics of sound. The lobster sound is observed using a hydrophone. The study aimed to determine the daily sound productivity of the P. homarus as a response to the salinity changes. Observation was carried out on the laboratory scale with a salinity reduction of 2 PSU per day. Results showed three types of the sound of the lobster, slow rattle, squeaking, and popping. All of the sounds is produced at a different salinity of waters. There is a significant relationship between the number of sound productivity of lobster and the decreasing water salinity.