First record of hydrozoan genera Eucheilota McCrady, 1859 and Mitrocomella Haeckel, 1879 and species Porpitaporpita (Linnaeus, 1758) and Physaliaphysalis (Linnaeus, 1758) in Bali, Indonesia.

Widiastuti Widiastuti

doi:10.3897/bdj.9.e76001

Abstract

This report documents the first record of the genera Eucheilota and Mitrocomella and species Porpitaporpita and Physaliaphysalis in Bali, Indonesia, based on observed occurrences in different times and sites. The coincidence of the annual stranding of Physaliaphysalis in the east Bali and south Java coasts during the monsoon periods in Indonesia suggests a link with the upwelling events in the areas. However, more work is needed to analyse this phenomenon and study the occurrences of other Hydromedusae due to the limited data on hydrozoans in Indonesian waters. Overall, this report provides primary data to contribute to the general understanding of the biodiversity of marine organisms in Indonesia.

Highlights

Class Hydrozoa (Phylum Cnidaria) encompasses two subclasses, Hydroidolina and Trachylinae
This study reports the observations of four Hydromedusae, Eucheilota McCrady, 1859 from the Lovenellidae family, Mitrocomella Haeckel, 1879 from the Mitrocomidae family, Porpita porpita (Linnaeus, 1758) from the Porpitidae family and Physalia physalis (Linnaeus, 1758) from the Physaliidae family, in Bali waters
The observations of Porpita porpita and Physalia physalis were based on a beach stranding in Semawang Beach (115°15'49.02156"E, 8°42'29.11284"S) on 8 July 2020, whereas Eucheilota and Mitrocomella were collected using a beaker from a boat that was moving relatively slowly along Selini Beach on 3 April 2021 (114°39'25.67196"E, 8°8'25.40004"S)

Summary

Introduction

Class Hydrozoa (Phylum Cnidaria) encompasses two subclasses, Hydroidolina and Trachylinae. Eucheilota, Mitrocomella, Porpita porpita, Physalia physalis, Hydromedusae, Bali

Results

Conclusion