Trijoko Trijoko

Holthuisana is a freshwater crab member of the family Gecarcinucidae which has a distribution in eastern Indonesia to Australia. This study was aimed to determine the variations in the shape of carapace and chelae within genus Holthuisana collected from Sentani Lake, Papua using analysis of geometric morphometric. The morphological characters confi...

Anthropogenic activities drove an unprecedented rate of land-use change in the last century. Corporate is one of the most highlighted sectors due to the extent of the impact on the environment. Therefore, PROPER (Corporate Performance Rating Assessment for Environmental Program) was developed by the Ministry of Environment and Forestry as a safegua...

Turbo snails have important roles in the ecosystem as prey for predators, and decomposition of dead objects, and it is starting to decrease. This is quite worrying so that conservation efforts must be carried out immediately. Turbo snail species found in Sepanjang Beach, Gunungkidul are Turbo crassus and Turbo setosus. The aims of this study were t...

The Australian red claw freshwater crayfish, Cherax quadricarinatus is one of the most widely distributed and cultivated freshwater crayfish due to its high tolerance towards various environmental conditions. Native to North Australia and South Papua New Guinea, this crayfish was found in Tambakboyo Retention Basin in 2016 and Sermo Reservoir in 20...

Macrobrachium merupakan genus dari subfilum Crustacea dengan keanekaragaman tertinggi. Identifikasi morfologi dari genus Macrobrachium sebagian besar sulit dilakukan karena karakter untuk identifikasi tingkat spesies yang rumit, sedangkan banyak karakter umum untuk semua spesies anggota Macrobrachium. Sulitnya identifikasi morfologi juga disebabkan...

Genus Macrobrachium memiliki anggota spesies yang banyak dan terdistribusi di berbagai negara diantaranya Indonesia, Malaysia, Thailand, Laos dan Vietnam. Salah satu spesies anggota genus Macrobarachium yang dapat ditemukan di Indonesia adalah Macrobrachium sintangense atau lebih dikenal sebagai udang regang. Identifikasi terhadap spesies ini penti...

Kurnia RR, Lesmana I, Ernanto AR, Perdamaian ABI, Trijoko, Daryono BS. 2021. The association of follicle stimulating hormone receptor (FSHR) gene polymorphism of on egg productivity in hybrid chicken (Gallus gallus gallus, Linnaeus 1758). Biodiversitas 22: 1221-1226. Pelung chicken genetics Improvement by selective breeding to Layer Lohmann Brown w...

Research on cutlassfish’s diet has been carried out in several areas, but similar research does not exist or still rarely found in Gunungkidul. The aim of this study is to determine the overall composition of the cutlassfish's food, the most dominant type of food and cutlassfish's growth pattern. Methods including random sampling in the field, meas...

ABSTRAKKatang balanga (Scylla serrata) hidup pada dua kawasan mangrove di desa Leksula yaitu Teslatu-Tanjung Kabat dan Kamite Salehen. Pemerintah Desa Leksula menerapkan sasi katang balanga pada kawasan mangrove Teslatu-Tanjung Kabat. Sasi katang balanga adalah larangan menangkap katang balanga pada waktu tertentu dan cara untuk menghindari penangk...

Penelitian mengenai keanekaragaman ikan air tawar di Sungai Opak DIY telah dilakukan dan dipublikasikan, tahun 2006, 2011 dan 2013. Data mengenai keanekaragaman ikan di Sungai Opak perlu dilakukan penambahan data, terutama data menyeluruh dari hulu hingga muara. Penambahan data perlu dilakukan, karena dimungkinkan ditemukan jenis ikan yang belum se...

The Gama Ayam Research Team has implemented marker-assisted selection (MAS) in selective breeding to provide a faster, more accurate, and more reliable selection of chicken. Mx gene expression has a vital role in chicken disease resistance. This research aimed to investigate the expression of Mx exon-13 single nucleotide polymorphisms (SNPs) in the...

The Earthworms are one of the invertebrate species which hasn’t backbone. The Earthworm has lived in a few habitats, for example in the humid of forest ground with the high density of cover canopy. Field of Biology UGM is an artificial forest and has a high density of cover canopy and this condition can supported the living habitat of earthworms. T...

Shellfish, called as kerang in Indonesia, contains animal protein that’s popular, making it as and important fisheries and marine commodity. Supported by the good taste and high nutrient content in it. Paphia undulata or Kerang Batik, Peryglipta reticulata or Kerang Kemiri, Meretrix meretrix or Kerang Tahu, and Codakia tigerina or Kerang Madu, are...

Tanjung A, Saragih HTSSG, Trijoko, Soenarwan HP, Widianto S, Mahardhika IWS, Daryono BS. 2019. Polymorphism of myostatin gene and its association with body weight traits in a hybrid of GAMA chicken (Gallus gallus domesticus Linn. 1758). Biodiversitas 20: 3207-3212. An experiment was conducted to detect SNP of the myostatin gene and its association...

Prasetya TA, Nazira FK, Millaty INK, Zulfikar WG, Nazara FA, Trijoko. 2017. Molluscan diversity (Gastropoda: Neogastropoda) in intertidal zone of Nguyahan Beach, Gunungkidul, Yogyakarta, Indonesia. Ocean Life 1: 55-60. Neogastropod is a taxonomic order of sea snails which have a well developed siphonal canal on their shell. The order includes many...

Bivalves are actively captured to be used as foodstuffs and raw materials souvenirs. Bivalves have economic value that continues to be exploited. But there is no record of its biodiversity in the coastal waters Tarakan City. This research purposes were to study the members of the Genus Anadara species diversity, study of morphological characters an...

Research aim to derive an excellent hybrid to be positioned as meat-type chicken. An excellent breed which possess uniform morphological character was archived by genetic selection through back-crossed mating shceme in focus on growth rate and plumage color uniformity. Day Old Chicken (DOC) resulted from parent stock broiler cobb 500 and Pelung chi...

Research aim to derive an excellent hybrid to be positioned as meat-type chicken. An excellent breed which possess uniform morphological character was archived by genetic selection through back-crossed mating shceme in focus on growth rate and plumage color uniformity. Day Old Chicken (DOC) resulted from parent stock broiler cobb 500 and Pelung chi...

Indonesia has high biodiversity, one of them is the diversity of giant freshwater prawn (Macrobrachium rosenbergii de Man, 1879). The giant freshwater prawn was easy to reproduce and has high nutritional value. This study was conducted to determine the morphological variation of inbreed and outbreed of Probolinggo and Mahakam (Mama, Gogo, Goma, and...

Spiny Lobster, Panulirus homarus, farming is very potential to be developed in Lombok Island, but physiological aspects such as nutrient needs and growth hormone, especially ecdysone titer, were little known. This research aimed to determine the ecdysone titer of Panulirus homarus during the last pre-molting phase. This study was conducted as a qua...

White spot syndrome virus (WSSV) is a devastating viral disease in shrimp aquaculture. Infection of WSSV in penaeid shrimps affects immune defense and changes gene expression. PmVRP15 has been reported as a part of the WSSV propagation pathway that is highly up-regulated in hemocytes at the acute phase of WSSV infection. This study analyzed the exp...

Laying chicken attracts interest from farmers because of its high egg production. Feed quality and quantity determine chicken egg production level. The purpose of this study is to determine the influence of protein level on feed into the development of follicles in laying hens. This research used 20 individuals of day-old chick (DOC) Lohmann Brown,...

Introduction: Fucoidan is a sulfated polysaccharide that has a wide range of bioactivities including anti-cancer. This polysaccharide commonly is extracted from marine brown seaweed. There is lack of information on the fucoidan extracted from tropical brown algae and its anti-cancer activity. Objectives: The objectives of this study were to purify...

Giant tiger shrimp (Penaeus monodon Fabricius, 1798) is one of Indonesia’s main aquaculture commodities. Four populations (G7, G8, G8iA and G8iJ) of tiger shrimp were obtained from broodstock center of Main Center for Brackishwater Aquaculture and Fisheries (MCBAF) Jepara, Central Java, Indonesia. G7 is the domesticated stock in MCBAF Jepara. Inbre...

The diversity of freshwater fishes which inhabit in the river of Daerah Istimewa Yogyakarta is not yet well documented. Complete documentation is needed as starting point and continuous research on the fish diversity in DIY. Boyong-Code River flows across the DIY, and it upstream is located on the hillside of Merapi volcano. The Code River upstream...

Crabs has been known inhabiting diverse habitat. Crabs were found in the sea, and some other species were found in terrestrial or freshwater. Crabs is one of the important biotic components of the aquatic ecosystem as detrivore. Opak River is one of the major rivers in the Daerah Istimewa Yogyakarta (DIY), which has a various conditions and direct...

Several rivers flow across Daerah Istimewa Yogyakarta (DIY includes Opak River which it’s upstream located on Merapi Volcano area. The river has a lot of biological resources, includes prawns. Freshwater prawns (Macrobrachium spp.) has important role in maintaining the balance of freshwater ecosystems. The purpose of this research was to determine...

Fucoidan is a sulfated polysaccharide from the sea that has a wide range of bioactivities, among others as anti-cancer and immunomodulators. The seaweeds sampling was carried out in the intertidal zone during low tide, followed by the identification, extraction and purification, and cytotoxicity assay. Identification showed that three seaweed used...

Anura sering disebut sebagai katak dan kodok (Iskandar, 1998). Penelitian mengenai keanekaragaman anggota Anura di Daerah Istimewa Yogyakarta (DIY) telah banyak dilakukan. Penelitian tersebut sebagian besar difokuskan di lereng selatan Gunung Merapi, tetapi beberapa penelitian juga telah dilakukan di sekitar kampus UGM dan di Sungai Code (Eprilurah...

As the country which have longest shoreline in the world and located in the center of world's coral triangle, Indonesia exactly have a fascinating and extraordinary diversity of coral reefs and marine creatures. Ironically, this high potential area still not have a massive database of marine species. This research was conducted to assess the biodiv...

District-Based Marine Protected Area, Olele beach located in Tomini bay. Tomini bay well known by high coral biodiversity in the Coral Triangle. However, a research related to its coral reef biodiversity in Olele beach has never been conducted before. This research aims to study the diversity, distribution and abundance of Scleractinian Coral in Ol...

Daerah Istimewa Yogyakarta terletak di lereng selatan Gunung Merapi. Kawasan Gunung Merapi mempunyai hutan yang cukup luas dan lebat. Hutan tersebut merupakan reservoir air yang sangat baik, sehingga Gunung Merapi menjadi hulu dari beberapa sungai yang mengalir membelah kota Yogyakarta. Potensi alam yang berupa kekayaan fauna pada habitat sungai ma...

Lobster is one of the important marine living resources in Indonesia because it is known to contain nutrients and high commercial value. Two arrested common lobster family is Palinuridae and Scyllaridae. Many family members lobster is unknown nature, characteristics, distribution and its potential. Lombok Island becomes center of a growing maintena...

Gunungkelir stream is located in Jatimulyo village, western part of Daerah Istimewa Yogyakarta Province.The ecosystem that surrounds Gunungkelir stream looks natural and unpolluted, it is possible for good livingenvironment of amphibians. However, the database about diversity of Amphibians in Gunungkelir stream hasnot been revealed. This research w...

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Milkfish (Chanos chanos) is kind of herbivore fish that consume phytoplankton and has a long digestive track. There are so many floral normal bacteria that help milkfish in digestion process. Flora normal bacteria have potential in breaking phytoplankton cell wall that contains cellulose. Cellulolytic bacteria that produce enzyme from the milkfish...

Plawangan Hill, southern slope of Mount Merapi suffered great damage after Mount Merapi eruption in 2010. Plawangan Hill ecosystem was dramaticaly changed after the eruption. This change of ecosystem affected all organism in this place, including the Anuran. This research aimed to study Anuran diversity and feeding habit after the eruption in Plawa...

Veneridae bivalves are well-known and have economic signifi cance, consumed as food and used for ornaments. Paphia undulata is one of the members of Veneridae. However, the functional morphology of this species has not been studied. The purpose of this research was to study the morphological characters of Phapia undulata. Specimens collected from S...

In this study, the extract was tested for in vitro activity against oxytetracycline-resistant V. harveyi . Toxicity of the methanolic extract was evaluated by Brain Shrimp Lethality test. Geodia sp. was characterized by three spicula types (oxeas, trianes and oxyaster euaster), encrusting growth formation, hispid surface features and skeletal struc...

The aim of the research was to know the diversity of zooplankton in Wedi Ombo Bay, Gunung Kidul, Yogyakarta, as candidates of live feed for spiny lobster (Panulirus homarus L.) larvae. Samples were collected from August 2002 to January 2003 by using Van Dorn tubes water sampler at 0 m, 5 m and 10 m of water depth for each sampling point. The zoopla...

Anadara bivalves are actively collected for food in many places in the world. In Sidoarjo, Anadara bivalves have economic significance and they are collected by local people for along the year. Unfortunately, there are no records about the species richness of Anadara in this area. The purposes of this research were to know the species richness of A...