Raissha Amanda Siregar, Nurlita Putri Anggraini, Ester Restiana Endang Gelis, Bagus Suryo Kusumo, Beginer Subhan, Neviaty P. Zamani, Hawis Madduppa, Khalilah Najwa
Squat lobsters are organisms that have high abundance and can be found in almost all environmental conditions, one of which is dead coral. Due to its wide distribution and many systematic differences within the group, this group has a complex classification history. This lobster squat group can be accurately identified using molecular analysis combined with morphological identification. The purpose of this study was to identify squat lobsters on dead coral in the Seribu Islands, Jakarta through phylogenetic tree reconstruction based on molecular and morphological identification. A total of 18 squat lobster individuals collected from dead coral heads were preserved using 96% ethanol. The mitochondrial 16S rRNA gene target was used for molecular identification. The BLAST results on NCBI were identified as Allogalathea elegans, Allogalathea babai and Galathea sp. 2, which form 3 clades in the phylogenetic tree. Furthermore, we confirmed this type through morphological identification, which involves comparing the shape of the rostrum and the structure of the spines on the carapace. Both tools have been validated and can describe the types of squat lobsters in the Seribu Islands, Jakarta. Squat lobsters play a role in the food web of coral reef ecosystems as an important food source for carnivores. This study has the potential to provide insight into the function of dead coral in coral reef ecosystems and can broaden insights into marine biodiversity and also provide relevant data for the management and conservation of coral reef ecosystems. © The Authors.
Marine Science Department, Faculty of Marine Science and Fiseries, Universitas Syiah Kuala, Jl. Meureubo Kampus USK Darussalam, Banda Aceh, 23111, Indonesia; Department of Fisheries, Faculty of Animal Science, Universitas Jambi, Mendalo Darat, Jambi Luar Kota, Jambi, Jambi, 36361, Indonesia; Department of Marine Science and Technology, Faculty of Fiseries and Marine Science, Bogor Agriculture University (IPB), Jl. Darmaga Raya, West Java, Bogor, 16680, Indonesia
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