Biodiversity of lobster larvae (Panulirus spp.) from the Indonesian Eastern Indian Ocean

Abstract

Lobster fisheries play an important role in the development of Indonesian fisheries management. The tropical lobster genus Panulirus has high species diversity in the Indonesian Eastern Indian Ocean. The Indonesian government has designated lobster fisheries as one of the types of fisheries requiring special attention in 11 of the Fisheries Management Areas in the Republic of Indonesia (FMARI). Each management area has specific ecological characteristics and may have unique lobster species richness. Studies on the temporal and spatial distribution of lobster species during all life phases are necessary to determine the connectivity of lobster populations. This study aimed to identify the species of lobster larvae of the genus Panulirus in FMARI 573. Samples were collected from several locations, including Pacitan, Trenggalek, Tulungagung, Banyuwangi, and Lombok, in July-August 2018. Data were analysed descriptively through species identification based on morphological traits. Identification of the samples was carried out at the sampling site and in the laboratory. The study found six species of lobster larvae: Panulirus ornatus (local name udang mutiara), P. homarus (udang pasir), P. penicillatus (udang batu), P. versicolor (udang bambu), P. longipes (udang batik) and P. polyphagus (udang Pakistan). These species were unevenly distributed at the study sites. Further research is needed to analyse the distribution and connectivity of lobster populations by analysing species composition during different life phases (larva/puerulus, juvenile, adult) at different spatial and temporal scales.

Carapace length-frequency distribution and carapace length-weight correlation of ornate spiny lobster (Panulirus ornatus) in Sebatik Island Waters – Indonesia

“…The growth pattern of ornate spiny lobster was negatively allometric, so carapace length increases faster than ornate spiny lobster weight. Negative allometric growth patterns of ornate spiny lobster in Sebatik Island waters is possible due to abiotic factors from a high level of pressure from the marine environment where they live, with dominant human activities, functional gonad maturity, and oceanographic processes 24,25 . As a comparison from other research on ornate spiny lobster growth patterns, data from Sorong waters shows a negative allometric pattern 26 .…”

“…The difference in b-value variance is affected by the dimensions of carapace length and weight levels of each species. Still, it may also be affected by several factors, such as food availability, water quality, sexual, gonad maturity level, and habitat well-being 24,25,27,28 .…”

The differences of depth on the species composition of Spiny Lobster Puerulus on South Pacitan Regency, East Java

“…lobster larva's attractor material is unsame in different locations. Waring is main material, for example was widely used by fishermen in the Trenggalek, Banyuwangi and Lombok areas [ Previous study found that there were six species of puerulus inhabit Eastern Indian Ocean of East Java [12]. From the research, there were 4 species of captured puerulus species, including Ornate puerulus, Scalloped puerulus, Painted puerulus and Pronghorn puerulus.…”

eDNA metabarcoding of decapod crustaceans across Indonesian seas has implications for biodiversity conservation and fisheries sustainability

“…The SeaLifeBase distribution is limited to four countries/territories: China, Hong Kong, Taiwan and Thailand (Palomares & Pauly, 2021). At least eight species are reported from Indonesia: Panulirus homarus, P. ornatus, P. penicillatus, P. longiceps, P. polyphagus, P. versicolor, P. daypus, and P. femoristriga (Wahyudin et al, 2016;Teteleptal et al, 2017;Setyanto et al, 2019). Reports of declining stocks (Teteleptal et al, 2017) indicate a need for sustainable fisheries management of this genus.…”