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HAWIS H. MADDUPPA
Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, Institut Pertanian Bogor. Marine Center Building, Jl Agatis No. 1, Bogor 16680, West Java, Indonesia.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Morphogenetic and population structure of two species marine bivalve (Ostreidae: Saccostrea cucullata and Crassostrea iredalei) in Aceh, Indonesia MUTIA RAMADHANIATY; ISDRAJAD SETYOBUDIANDI; HAWIS H. MADDUPPA
Biodiversitas Journal of Biological Diversity Vol. 19 No. 3 (2018)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d190329

Abstract

Ramadhaniaty M, Setyobudiandi I, Madduppa HH. 2018. Morphogenetic and population structure of two species marine bivalve (Ostreidae: Saccostrea cucullata and Crassostrea iredalei) in Aceh, Indonesia. Biodiversitas 19: 978-988. Oysters (Family Ostreidae) are mollusks, with high levels of phenotypic plasticity and wide geographic distribution. Oysters are a challenging group for morphological identification and genetic populations study. Saccostrea cucullata and Crassostrea iredalei are oysters from bivalve class that lives in the intertidal area and mangrove ecosystem. To clarify the morphology, genetic diversity and population structure of the two forms of S. cucullata and C. iredalei, we collected and studied oysters from three locations along the coastal region of Aceh by using morphometric method and 16 S mtDNA sequences analysis. We also added more oysters sequences from China, Japan, and Thailand to determine the connectivity between all populations. Morphometric characteristics of the oyster showed a negative allometric growth pattern, which means the rate of length gain is faster than that of the weight gain. The genetic distance from S. cucullata was 0.003-0.004 (Fst = 0.708) and C. iredalei was 0.000 (Fst = 0.971). The long genetic distance and high fixation index (Fst) in the oysters population are caused by the close geographical distance of the species in the three populations. The haplotype diversity value from S. cucullata and C. iredalei were 20 and 3, respectively. The haplotype showed the connectivity among the oyster populations which indicated by the gene flow pattern. The gene flow was affected by geographical distance and environmental complexity.
Molecular identification, abundance and distribution of the coral-killing sponge Terpios hoshinota in Bengkulu and Seribu Islands, Indonesia RISNITA TRI UTAMI; NEVIATY P. ZAMANI; HAWIS H. MADDUPPA
Biodiversitas Journal of Biological Diversity Vol. 19 No. 6 (2018)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d190632

Abstract

Utami RT, Zamani NP, Madduppa HH. 2018. Molecular identification, abundance and distribution of the coral-killing sponge Terpios hoshinota in Bengkulu and Seribu Islands, Indonesia. Biodiversitas 19: 2238-2246. Coral killing sponge Terpios hoshinota is one of threats to coral reefs. The outbreaks of  T. hoshinota has been reported in the Indo-Pacific region. However, the current distribution of this species in Western of Sumatera Island is unknown, compared to Seribu Islands. This study aimed to identify coral-killing sponge molecularly and to compare the distribution and abundance of T. hoshinota in Bengkulu (Western of Sumatera) and in Seribu Islands (Northern of Java Island) and to record the preferences of coral substrate of T. hoshinota. Coral reefs and T. hoshinota data were collected using underwater photo transect method with 0.5x0.5m2 quadrate transect. Coral reefs covered by T. hoshinota was analyzed by using Correspondence Analysis, while the determination of biophysical and chemical environment was analyzed by Principal Component Analysis. The identity of the sponge was T. hoshinota. T. hoshinota has been expanding in many reefs across Indonesia especially in Tikus Island and Belanda Island. The most prevalent coral genera in the Seribu Islands infected by T. hoshinota was Acropora while those in Bengkulu were Porites and Pocillopora. Pearson correlation between the live coral cover and T. hoshinota cover was revealed not significant, while T. hoshinota cover and orthophosphate was significant. This study suggests that orthophosphate may play a role invasion of T. hoshinota outbreaks.
Co-Authors ISDRAJAD SETYOBUDIANDI MUTIA RAMADHANIATY NEVIATY P. ZAMANI RISNITA TRI UTAMI