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All Journal Indonesian Aquaculture Journal Jurnal Riset Akuakultur
Gusti Ngurah Permana
Institute Mariculture Research and Development (IMRAD) Gondol Bali
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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POPULATION GENETIC STRUCTURE OF SPINY LOBSTERS, Panulirus homarus AND Panulirus ornatus, IN THE INDIAN OCEAN, CORAL TRIANGLE, AND SOUTH CHINA SEA Gusti Ngurah Permana; Bedjo Slamet; Bagus Arya Permana; Ayu Krisna Dewi; Gusti Ngurah Mahardika
Indonesian Aquaculture Journal Vol 14, No 1 (2019): (June, 2019)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (712.231 KB) | DOI: 10.15578/iaj.14.1.2019.7-14

Abstract

Populations of spiny lobsters worldwide are threatened by overfishing, while its supply from aquaculture is currently insufficient to meet the market demand. This current study investigated the genetic structure of two economically important spiny lobsters, P. homarus and P. ornatus sourced from the Indian Ocean and South China Sea. Fragments of the cytochrome oxidase subunit-I (COI) gene of the mitochondrial DNA of 71 P. homarus and 42 P. ornatus collected from 6 and 5 fish landing sites in Indonesia, respectively, were sequenced. Homologous sequences from the Indian Ocean and South China Sea available at GenBank were included in the analysis. No genetic differences were observed in P. ornatus populations from the two geographic regions (xST = -0.005) while a diminutive difference was found in the populations of P. homarus (xST = -0.002 and 0.009). These results, combined with a negative Tajima’s D estimates, points to a deficit of nucleotide variation relative to the expectations from the mutation/drift equilibrium. Reconstruction of the phylogeny of P. homarus demonstrates that all Indonesian samples of P. homarus are grouped in one cluster and share the common cluster with GenBank data originated from Taiwan, Vietnam, India, Sri Lanka, Oman, and Iran. The phylogeny of P. ornatus indicates that there are two separated lineages existing in Indonesia.
KARAKTERISASI DAN EVALUASI POPULASI ABALON Haliotis squamata SECARA MOLEKULER, MORFOMETRIK, DAN BIOLOGI Gusti Ngurah Permana; Rudhy Gustiano; Ibnu Rusdi; Fitriyah Husnul Khotimah; Bambang Susanto; Dedi Duryadi Solihin
Jurnal Riset Akuakultur Vol 12, No 2 (2017): (Juni 2017)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (852.148 KB) | DOI: 10.15578/jra.12.2.2017.111-119

Abstract

Abalon merupakan salah satu komoditas penting gastropoda laut. Tingginya permintaan abalon ini mengakibatkan menipisnya stok di alam. Oleh karena itu, upaya keberhasilan budidaya abalon perlu didukung oleh jenis unggul. Indikasi awal suatu jenis unggul dapat dilakukan dengan menganalisis potensi genetik yang dimiliki. Penelitian ini dilakukan dengan analisis gen 16S rRNA, karakter morfolologi, dan biologi dianalisis secara deskriptif dengan metode kajian pustaka. Hasil yang diperoleh menunjukkan keragaman inter populasi Haliotis squamata mendeteksi adanya tujuh haplotipe yang terbagi dalam dua kelompok. Penyertaan H. diversicolor sebagai outgroup dalam pengujian memperlihatkan bahwa populasi H. squamata dari Pulau Bali dan beberapa lokasi di Pulau Jawa berada dalam satu kelompok yang terpisah dengan outgroup. Hasil ini kongruen dengan analisis morfometrik terdapat perkembangan pertumbuhan cangkang yang asimetri pada populasi Banten. Pertumbuhan asimetri merupakan indikasi spesifik untuk populasi Banten atau merupakan gejala abnormalitas yang dapat diakibatkan oleh faktor penurunan kualitas genetik atau lingkungan. Karakter biologi terlihat proporsi daging dan gonad berbeda pada populasi Banten dengan indikasi adanya pertumbuhan asimetri. Rasio gonad dan daging populasi Banyuwangi berbeda nyata (P<0,05) dengan populasi lainnya.Abalone is arguably one of the highly valued and sought-after marine gastropods. However, the over-exploitation of this species has exhausted its wild stock. To overcome this challenge, the culture technique and management of this species must be established and continually improved. One of the ways is through producing superior broodstocks. An initial assessment of a genetically superior broodstock can be done using the potential genetic analysis. This recent research employed the analysis to study the species’ 16S rRNA gene. To complement the study, the morphometric and biological characteristics of the species were analyzed descriptively with the aid of scientific literature. The results showed that the interpopulation diversity of Haliotis squamata was detected by the presence of seven haplotypes divided into two groups. The inclusion of H. diversicolor as an outgroup within the test showed that the populations of abalone in Bali and several other sites in Java were genetically separated from the outgroup. This finding can be backed up with the result of the morphometric analysis where there was asymmetric shell growth in Banten abalone population. This asymmetric growth is considered as a symptom of abnormality caused by genetic or environmental degradation factors. The biological characteristics showed the different ratios of meat and gonad in the Banten population due to the asymmetric growth. Banyuwangi population was significantly different (P<0.05) from other populations in terms of meat and gonad ratios.
Co-Authors Ayu Krisna Dewi Bagus Arya Permana Bambang Susanto Bedjo Slamet Dedi Duryadi Solihin Fitriyah Husnul Khotimah Gusti Ngurah Mahardika Ibnu Rusdi Rudhy Gustiano