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All Journal Journal of Oceanography Journal of Marine Research Jurnal Kelautan Tropis Animal Production : Indonesian Journal of Animal Production Care : Jurnal Ilmiah Ilmu Kesehatan Jurnal Pendidikan ANGON: Journal of Animal Science and Technology Animal Production
Munasik Munasik
1Jurusan Ilmu Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Diponegoro, Jl. Prof. Soedarto, SH. Tembalang, Semarang, Indonesia 50275
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Immunology & microbiology Nursing Public Health Veterinary

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Kelimpahan dan Biomassa Ikan Karang Famili Scaridae pada Ekosistem Terumbu Karang di Perairan Pulau Kembar, Karimunjawa, Jepara Tambunan, Fran Ciputra; Munasik, Munasik; Trianto, Agus
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (827.035 KB) | DOI: 10.14710/jmr.v9i2.26706

Abstract

ABSTRAK : Ikan kakatua merupakan salah satu ikan karang yang dapat membantu kehidupan pada ekosistem terumbu karang. Scaridae mengumpulkan berbagai spesies ganggang dengan cara memakan algae pendek yang menutupi substrat karang sehingga dapat mempengaruhi pertumbuhan terumbu karang. Sebaran Scaridae sangat ditentukan oleh kondisi dan variasi habitat terumbu karang. Penelitian ini bertujuan untuk mengetahui kelimpahan dan biomassa dari ikan Famili Scaridae. Penelitian dilaksanakan pada bulan Oktober 2018 di Perairan Pulau Kembar, Karimunjawa, Jepara. Pengambilan data  ikan karang menggunakan metode UVC dan data substrat terumbu karang diambil menggunakan metode LIT sepanjang 100 meter sejajar garis pantai dengan pengamatan pada dua kedalaman yaitu 3m dan 10m. Berdasarkan hasil penelitian, didapatkan 11.459 individu yang termasuk dalam 49 spesies ikan karang yang berasal dari 14 famili. Ikan karang dari Famili Scaridae ditemukan sebanyak 1059 individu yang termasuk dalam 4 spesies ikan karang yang berasal dari 2 genus. Nilai kelimpahan ikan karang dari Famili Scaridae berkisar antara 48 hingga 204 ind/500m2, kelimpahan terendah berada pada stasiun 1 dan tertinggi berada di stasiun 3.  Nilai biomassa ikan karang dari Famili Scaridae berkisar antara 219,7–2491,7 kg/ha, biomassa terendah berada pada stasiun 1 dan tertinggi berada di stasiun 3.  Berdasarkan hasil penelitian dapat disimpulkan bahawa Pengaruh tutupan karang keras hidup sangat berpengaruh terhadap kelimpahan dan biomassa ikan karang dari Famili Scaridae. ABSTRACT : Parrot fish is one of the reef fish that can help life on the coral reef ecosystem. Scaridae collect various species of algae by eating short algae that cover the coral substrate so that it can affect the growth of coral reefs. Scaridae distribution is highly determined by the condition and variety of coral reef habitats. This study aims to examine the abundance and biomass of Scaridae Family fish. The study was conducted in October 2018 in the waters of the Kembar Islands, Karimunjawa, Jepara. Retrieval of reef fish data using UVC method and coral reef substrate data were taken using the LIT method along 100 meters along the coastline with observations at two depths in 3m and 10. Based on the results, 11,459 individuals were included in 49 species of reef fish originating from 14 families. Coral fish from the Family Scaridae were found as many as 1059 individuals included in 4 species of reef fish originating from 2 genera. The value of coral fish abundance from the Scaridae Family ranges from 48 to 204 ind / 500m2, the lowest abundance is at station 1 and the highest is at station 3. The reef fish biomass value of the Scaridae Family ranges from 219.7 - 2491.7 kg / ha, biomass the lowest is at station 1 and the highest is at station 3. Based on the results of the study it can be concluded that the effect of live hard coral cover is very influential on the abundance and biomass of reef fish from the Scaridae Family.
Pemetaan Kerusakan Terumbu Karang Akibat Kandasnya Kapal Tongkang di Taman Nasional Karimunjawa, Jawa Tengah Munasik, Munasik; Helmi, Muhammad; Siringoringo, Rikoh Manogar; Suharsono, Suharsono
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1281.398 KB) | DOI: 10.14710/jmr.v9i3.28239

Abstract

ABSTRAK: Pemetaan kerusakan terumbu karang akibat kandasnya kapal tongkang di P. Tengah dan di P. Cilik, Taman Nasional Karimunjawa, Jawa Tengah telah dilakukan 2-3 bulan setelah kejadian dengan cara mengukur luas area kerusakan dan menilai kondisi terumbu karang. Pengukuran area kerusakan menggunakan metode penginderaan jarak jauh berbasis Drone (UAV Drone/pesawat tanpa awak) dan penilaian kondisi ekosistem terumbu karang dengan menggunakan metode Underwater Photo Transect (UPT). Tujuan penelitian ini adalah untuk mengetahui kondisi dan kerusakan terumbu karang akibat kandasnya kapal tongkang di P. Cilik dan P. Tengah, Taman Nasional Karimunjawa. Hasil menunjukkan telah terjadi kerusakan fisik di lereng atas terumbu karang pada kedua pulau tersebut berupa karang mati dan pecahan karang. Luas kerusakan terumbu karang di P. Tengah (1.420,32 m2) lima kali lebih luas daripada luas kerusakan terumbu karang di P. Cilik (267,22 m2). Luasnya kerusakan terumbu karang di P. Tengah kemungkinan akibat perbedaan jumlah kapal tongkang yang kandas, waktu kandas dan dominasi karang yang mudah patah (fragile). Komunitas karang keras yang dominan di lereng terumbu P. Tengah adalah karang bercabang (CB), Acropora bercabang (ACB) dan karang lembaran/foliose (CF). Luasan kerusakan dan kondisi terumbu karang akibat kandasnya kapal tongkang ini dapat digunakan untuk pengelola kawasan konservasi dalam perencanaan perlindungan dan restorasi ekosistem terumbu karang di Taman Nasional Karimunjawa  ABSTRACT: Mapping damage to coral reefs due to the barges grounding in Cilik Island (P. Cilik) and Tengah Island (P. Tengah), Karimunjawa National Park, Central Java was carried out 2-3 months after the event by measuring the extent of damage and coral reefs assessment. Damage area measurement using Drone (UAV Drone) based remote sensing and reef ecosystem assessment using the Underwater Photo Transect (UPT) method. The aim of this study was to determine the condition and damage of coral reefs due to the wrecking of barges in Cilik and Central P., Karimunjawa National Park The results show that physical damage has occurred on the upper slopes of coral reefs on both islands is dead coral and coral fragments. Damage to extensive coral reefs in P. Tengah (1,420.32 m2) is five times larger than extensive damage to coral reefs in P. Cilik (267.22 m2). Damage to coral reefs in P. Tengah may cause differences in the number of barges that ran aground, time of aground and the dominance of fragile corals the upper slopes of the coral reefs. The dominant hard coral communities on the upper slopes of P. Tengah reefs are generally composed the fragile corals, such as branching corals (CB), branching Acropora (ACB) and foliose corals (CF). Damage to coral reefs and the condition of the ecosystem caused by the aground of the barges can be used to manage conservation areas in the planning of conservation and restoration of coral reef ecosystems in the Karimunjawa National Park in near future.
Hubungan Panjang Berat Dan Faktor Kondisi Loligo chinensis yang Didaratkan di TPI Tambak Lorok Semarang Sitompul, Noel Mansen; Azizah, Ria; Munasik, Munasik
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v10i2.29991

Abstract

Loligo chinensis merupakan salah satu jenis cumi-cumi yang memiliki nilai ekonomis penting di TPI Tambak Lorok Semarang. Produksi cumi-cumi merupakan hasil tangkapan dari alam, upaya penangkapan yang semakin tinggi dapat menyebabkan penurunan stok sumberdaya cumi-cumi. Tujuan penelitian ini adalah untuk mengetahui aspek biologi L.chinensis yang ada di Tambak Lorok yang meliputi hubungan panjang berat, faktor kondisi, dan pola pertumbuhan. Penelitian ini dilaksanakan pada bulan Juni-Juli 2020. Analisis data yang digunakan dalam penelitian adalah regresi linier sederhana dari log PM (panjang mantel) dan log W (weight) untuk mengetahui hubungan panjang beratnya. Nilai hubungan panjang berat L.chinensis mempunyai persamaan W = 0,00048L2,4921 untuk keseluruhan sampel, W = 3,237L0,84 pada betina dan W = 3,29L0,827 pada jantan dengan nilai slope (b) 2,4921; 0,84; dan 0,827. Nilai slope tersebut menunjukkan bahwa pertumbuhan L.chinensis bersifat alometrik negatif. Nilai faktor kondisi (Kn) = 1,064 pada keseluruhan sampel, Kn = 1,713 pada betina dan Kn = 1,63 pada jantan, nilai tersebut menunjukkan spesies ini tergolong memiliki badan yang kurus. Pertumbuhan panjang mantel (PM) L.chinensis tumbuh lebih lambat dibanding organ tubuh lain, kecuali terhadap berat tubuhnya. Loligo chinensis is one type of squid that has economic value crucial in the Tambak Lorok Semarang. Squid production mainly comes from nature, high fishing effort can cause a decrease in squid resource stock. The purpose of this study is to know the biological aspect L.chinensis in the Tambak Lorok include long weight relationships, condition factors, and the quality of alometry growth. The study was carried out in June-July 2020. The data analysis used is simple linear regression from the PM’s log (mantle length) and log W (weight) to know the relationship of its weight length. The relationship value between total length and total weight of L.chinensis has a W = 0,00048L2,4921 equation for the entire sample, W = 3,237L0,84 in the female and W = 3,29L0,827 in the male with slope (b) 2,4921; 0,84; and 0,827. Value slope shows the growths L.chinensis is negative alometrice. The value of the condition factor (Kn) = 1,064 in the entire sample, Kn = 1,713 in the female and Kn = 1,63 in the male. The value suggests that the species is thick-skinned. The growth of the mantle length (PM) of L.chinensis grows slower than other organs of the body, except for its total weight.
Aspek Biologi Pari Kekeh (Rhynchobatus sp. (Rhinidae:Chondrichthyes)) Studi Kasus di PPN Brondong, Lamongan Azidha, Lara; Irwani, Irwani; Munasik, Munasik
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v10i1.28496

Abstract

Pari kekeh (Rhynchobatus sp.) adalah organisme laut yang tergolong dalam Subkelas Elasmobranchii dan dikelompokkan ke dalam Kelas Chondrichthyes. Pari kekeh sering ditangkap dikarenakan dagingnya memiliki rasa yang enak, Selain itu, sirip Pari kekeh memiliki harga yang mahal  di China dan Global. Pari kekeh telah masuk kedalam daftar IUCN red list kategori critically endangered akibat eksploitasi berlebihan. Hal ini apabila terus terjadi maka ketersedian sumber daya Pari kekeh di habitatnya terancam punah. Oleh karena itu, perlu adanya pengaturan agar tidak terjadi eksploitasi berlebihan yang berdampak pada populasi pari kekeh, salah satunya dengan melakukan analisis aspek biologi. Tujuan dari penelitian ini untuk mengetahui hubungan panjang berat, nisbah kelamin, tingkat kematangan gonad, ukuran pertama kali matang gonad dan fekunditas Pari kekeh yang didaratkan di PPN Brondong. Sampel yang digunakan yaitu pari kekeh sebanyak 160 ekor. Penelitian ini menggunakan metode deskriptif dengan mengukur data panjang total dan standar, bobot, pengamatan gonad. Pola pertumbuhan Pari kekeh yaitu allometrik negatif (b = 2,52). Nisbah kelamin = 0,625 (Chi Square) dengan X tabel = 3,975, maka jumlah Pari jantan dan betina seimbang. Kematangan gonad Pari Rhynchobatus sp. sebesar 53%. Ukuran pertama kali matang gonad Pari kekeh jantan memiliki panjang total 48,97-49,16 cm dan Pari kekeh betina memiliki panjang total 95,29-98,60 cm. Nilai fekunditas Pari kekeh berkisar antara 5-16 butir pada kisaran panjang total tubuh 86-114 cm.  Kekeh Stingrays (Rhynchobatus sp.) are marine organisms that classified to the Elasmobranchii subclass and grouped into the Chondrichthyes Class. Kekeh Stingrays is often caught because has a good taste. In addition, Kekeh Stingrays fins have a high price in the Stingray and Shark fin trade in China and Global. Kekeh Stingrays has entered into the IUCN red list in the critically endangered category due to overexploitation. If excessive exploitation continues, the availability of Stingray resources in their habitat will be threatened. Therefore, there is a need for control to avoid overexploitation that affects the population of Kekeh Stingrays, one of which is by analyzing the biological aspects. The purpose of this study was to determine the length and weight correlation, sex ratio, gonad maturity level, size of the first gonad maturity, and fecundity of Kekeh Stingray which was landed in PPN Brondong. The samples used were 160 Kekeh Stingrays. This research uses descriptive method by measuring the total and standard length, weight, also gonad observations. The results obtained are the length and weight correlation of Stingray Kekeh which is negative allometric with a value of b = 2.52. The sex ratio based on Chi Square (x2) = 0,625 with X table = 3,975, that means the number of male and female Stingray is balanced. The value of  TKG II and TKG III of Rhinchobatus sp.that is, 53% is dominated by matured Rays. The first size of gonad maturity for rays was in a range 48,97-49,16 cm, while for female rays was in a range 95,29-98,60 cm. The Value of Kekeh Stingrays’s fecundity was around 5-16 eggs with the total length range is 86-114 cm.
Total Bahan Organik dan Kualitas Air di Perairan Morodemak, Kabupaten Demak Triyaningsih, Ni Nyoman Widya; Munasik, Munasik; Setyati, Wilis Ari
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v10i2.30024

Abstract

Perairan Morodemak merupakan daerah yang memegang peranan penting di Jawa Tengah sebagai daerah tangkapan dan pelelangan ikan serta kawasan padat penduduk. Namun penelitian mengenai kandungan bahan organik dan indeks pencemaran di lokasi jarang dilakukan. Tujuan penelitian ini untuk analisis Kandungan bahan organik dan indeks pencemaran serta  mengetahui kandungan bahan organik dan kondisi pencemaran di Perairan Morodemak Kabupaten Demak. Materi yang digunakan adalah air laut yang terdapat di sekitar Perairan Morodemak Kabupaten Demak. Sampel yang digunakan adalah sampel permukaan air yang diambil dengan botol Nansen kurang lebih pada kedalaman 1 meter. Metode penelitian yang digunakan adalah metode deskriptif dengan mengkaji kualitas perairan berdasarkan bahan organic di perairan Morodemak Kabupaten Demak. Pengambilan data secara in-situ kemudian dianalisa di laboratorium, serta analisis kualitatif indeks pencemaran dengan metode STORET yang dikeluarkan oleh Kementrian Lingkungan Hidup Republik Indonesia. Kandungan bahan organik di Perairan Morodemak adalah sebesar 15.01–15.94 mg/L untuk keadaan surut dan 19.96–21.67 mg/L untuk pasang. Dari kandungan bahan organik yang ditentukan, didapatkan hasil BOD5 dan COD sebagai parameter kualitas perairan sebesar 241.42–370.19 mg/L dan 515.117–792.191 mg/L. Kondisi Perairan Morodemak tergolong ke dalam perairan yang tercemar dikarenakan hampir seluruh parameter yang diujikan melewati batas baku mutu air laut untuk biota laut yang ditentukan oleh Kepmen LH No. 51 Tahun 2004 dan melewati indeks STORET dengan skor perairan > -31. Morodemak waters are an area that plays an important role in Central Java as a fishing and auction area as well as a densely populated area. However, research on organic matter content and on-site pollution index is rarely conducted. The purpose of this study was to analyze the organic matter content and pollution index and to determine the organic matter content and pollution conditions in the waters of Morodemak, Demak Regency. The material used is sea water that is around Morodemak Waters, Demak Regency. The sample used is a water surface sample taken with a Nansen bottle at a depth of 1 meter. The research method used is descriptive method by assessing the quality of the waters based on organic matter in the waters of Morodemak, Demak Regency. In-situ data collection was then analyzed in the laboratory, as well as a qualitative analysis of the pollution index using the STORET method issued by the Ministry of Environment of the Republic of Indonesia. The organic matter content in Morodemak waters is 15.01–15.94 mg / L for low tide and 19.96–21.67 mg / L for high tide. From the determined organic matter content, the BOD5 and COD results as water quality parameters were 241.42–370.19 mg / L and 515,117–792,191 mg / L. The condition of Morodemak waters is classified into polluted waters because almost all the parameters tested have exceeded the sea water quality standard limit for marine biota determined by the Minister of Environment Decree No. 51 of 2004 and passed the STORET index with a water score of> -31.
Analisa Genetika Gastropoda Nudibranchia dari Pulau Panjang, Jepara Sinulingga, Wilhelmina br; Wijayanti, Diah Permata; Munasik, Munasik; Haryanti, Dwi
Journal of Marine Research Vol 13, No 3 (2024): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v13i3.38661

Abstract

Gastropoda Nudibranchia memiliki karakteristik insang telanjang atau insang berbulu atau tanduk di punggungnya merupakan anggota Ordo Opisthobranchia, kelompok Gastropoda terbesar dengan anggota lebih dari 3.000 species. Nudibranchia diketahui hidup di Pulau Panjang, salah satu destinasi wisata terkenal di Jepara. Pergerakannya yang lambat dan bentuknya yang menarik, dapat mengganggu keberadaannya di habitat alaminya. Penelitian mengenai Nudibranchia belum banyak dilakukan di Indonesia, termasuk analisa genetiknya. Penelitian ini bertujuan untuk menganalisis keanekaragaman genetik Nudibranchia dari Perairan Pulau Panjang. Analisa DNA dilakukan di Laboratorium Terpadu Universitas Diponegoro, dengan metode PCR-sequencing menggunakan mtDNA-COI (cytochrome oxidase subunit I gene dari DNA mitokondrial). Primer yang digunakan pada penelitian yaitu primer forward: LCOI1490: 5'-GGTCAACAAATCATAAAGATATTGG-3 dan reverse: HCOI2198: 5'-TAAACTTCAGGGTGACC AAAAAATCA-3'. Rekonstruksi pohon filogenetik dan keragaman genetik dilakukan menggunakan software MEGA 6.06 (Analysis of the Evolution of Molecular Genetics). Hasil analisis sampel Nudibranchia berdasarkan susunan DNA mitokondria, ditemukan 2 spesies dengan 8 individu yaitu, spesies Jorunna funebris dan Chromodoris lineolata. Tingkat kesamaan (homologi) dalam analisa BLAST (Basic Local Alignment Search Tool) sebesar 98 % - 100 %. Hasil analisis filogenetik secara menyeluruh memperlihatkan pengelompokan yang terjadi berdasarkan kemiripan genetiknya.Nudibranchia gastropods have the characteristics of naked gills or hairy gills or horns on their backs and are members of the Order Opisthobranchia, the largest group of Gastropods with more than 3,000 species. Nudibranchia are known to live on Panjang Island, one of the famous tourist destinations in Jepara. Its slow movements and attractive shape can disrupt its existence in its natural habitat. Not much research has been done on Nudibranchia in Indonesia, including genetic analysis. This research aims to analyze the genetic diversity of Nudibranchia from Panjang Island waters. DNA analysis was carried out at the Diponegoro University Integrated Laboratory, using the PCR-sequencing method using mtDNA-COI (cytochrome oxidase subunit I gene from mitochondrial DNA). The primers used in the research were forward primer: LCOI1490: 5'-GGTCAACAAATCATAAAGATATTGG-3 and reverse: HCOI2198: 5'-TAAACTTCAGGGTGACCAAAAAATCA-3'. Phylogenetic tree reconstruction and genetic diversity were carried out using MEGA 6.06 (Analysis of the Evolution of Molecular Genetics) software. The results of analysis of Nudibranchia samples based on mitochondrial DNA structure found 2 species with 8 individuals, namely, Jorunna funebris and Chromodoris lineolata species. The level of similarity (homology) in BLAST (Basic Local Alignment Search Tool) analysis is 98% - 100%. The results of a comprehensive phylogenetic analysis show that grouping occurs based on genetic similarity.
Distribution Nudibranch and Carnivorous Fish in The North Bali Sea Wirawan, Kadek Fendi; Munasik, Munasik; Suprijanto, Jusup; Pravitasari, Anggi Karina
Jurnal Kelautan Tropis Vol 27, No 1 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i1.20168

Abstract

The presence or absence of certain types of carnivorous coralfish in a coral reef ecosystem accurately indicates the health of a coral reef ecosystem and the organisms associated with it; one of them is the nudibranch. This research aims to determine whether the presence of carnivorous fish in coral reef ecosystems affects the quality of the nudibranch life cycle and the distribution size in terms of predation. Nine carnivorous fish species were found at the three research stations, the largest group being triggerfish and grouper found in Lovina Reef and Menjangan island. Observed from the size distribution of nudibranchs, the presence of nudibranchs in the three research locations shows sizes ranging from small to large, namely from the Phyllididae nudibranch group. The dead body of the nudibranch was found in Tulamben reef, but it could not be confirmed whether the nudibranch was preyed by carnivorous fish. Carnivorous fish are not predators and do not affect the life cycle of nudibranchs observed from the complete size distribution of nudibranchs from small to large. Nudibranch predators cannot digest nudibranch bodies because their bodies are venomous; they use them as self-defense against the predators. Nudibranchia are not always found when preyed on by fish.
Feeding habit and Predation Selectivity of Reef Fish Chaetodon octofasciatus in Artificial Patch Reef and Natural Reef of Panjang Island, Jepara Bramasta, Arrico Fathur Yudha; Munasik, Munasik; Haryanti, Dwi
Jurnal Kelautan Tropis Vol 27, No 3 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i3.21731

Abstract

Chaetodon octofasciatus is a species of fish in the Chaetodontidae family, commonly known as an indicator fish in the reef ecosystem as the frequency of its appearance in the wild can interfere with the state of the coral reef ecosystem in the waters. Panjang Island is located in Jepara, Central Java, Indonesia, in which one method of coral reef ecosystem rehabilitation in a a form of Artificial Patch Reef (APR) has been implemented. This study aims to investigate the levels of C. octofasciatus predation on corals in the APR and Natural reef of Panjang Island. We used the LIT (Line Intercept Transect) to measure the density of coral reefs at both locations. The abundance of C. octofasciatus was calculated using the Belt Transect method, while selectivity and bite ratio was observed and counted every 5 minutes. The results shows that C. octofasciatus from natural reefs have the highest predation rate (185 bites/5 min) and mostly eat the coral with lifeform massive while the ones from APR shows 144 bites/5 min and mostly eat the coral with lifeform Acropora branching. This selectivity could be due to the availability of corals in both areas. While massive corals were highly available in the natural reefs, branchich corals esp. Acropora is mostly planted in the APR. A more diverse coral lifeform in the natural reef also showed the type of corals that are less selected by C. octofasciatus such as submassive corals and Acropora tabulate, as well as corals with the foliose life form.  
Effect of Liquid Fertilizer on Seedling Enhalus acoroides Seeds (Linnaeus f.) Royle 1839 (Fam: Hydrocharitaceae) Chamidy, Ardian Nurrasyid; Widianingsih, Widianingsih; Munasik, Munasik; Riniatsih, Ita; Susanto, AB
Jurnal Kelautan Tropis Vol 27, No 1 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i1.21066

Abstract

The decrease in seagrass coverage and ecosystem harm to seagrass meadows is an annual occurrence resulting from both natural and human activities.  Seagrass seeding has been deemed an effective restoration method, but its application is restricted by suboptimal environmental conditions and constraints associated with directly planting seagrass seeds in their natural habitat. The influence of environmental parameters, particularly nutrients, significantly affect on seagrass seed survival. NPK liquid fertilizer is commonly used in aquatic plants and is readily accessible in the market. It serves as a crucial source of macronutrients for seagrass. This study investigates the impact of different concentrations of NPK liquid fertilizer on the survival rate, growth, and chlorophyll, a content of E. acoroides seedlings. The study took place between March and May 2023 at the marine biology laboratory of the marine science study program at Diponegoro University's Faculty of Fisheries and Marine Science. According to the Manova statistical test, the NPK liquid fertilizer had an impact on the growth rate, biomass, and chlorophyll-a. The seagrass seeding container of E. acoroides treated with a liquid fertilizer concentration of 4.5 ml/100l exhibited the highest average growth rate of 0.29 cm/day and a chlorophyll-a value of 12.395 mg/g, with a survival rate of 100%. Causal connections between statements ensure logical construction. In contrast, seedlings without liquid fertilizer treatment showed the lowest growth rate of 0.19 cm/day and chlorophyll-a values of 5.169 mg/g, with a survival rate of 85.19%. Technical term abbreviations such as 'cm/day' and 'mg/g' are explained when first used to ensure clarity. Based on these findings, using liquid fertilizer with a concentration of 4.5 ml/l exhibits potential for restoring seagrass ecosystems. 
Optimization of Hydrolytic Enzyme Production from Tempeh Starter to Increase In Vitro Pepsin Digestibility of Black Soldier Fly Maggot Hasanah, Amanda; Rahayu, Sri; Hartoyo, Bambang; Suhartati, Fransisca Maria; Munasik, Munasik; Hindratiningrum, Novita
ANIMAL PRODUCTION Vol. 26 No. 2 (2024)
Publisher : Faculty of Animal Science, Jenderal Soedirman University in associate with the Animal Scientist Society of Indonesia (ISPI) and the Indonesian Association of Nutrition and Feed Science (AINI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jap.2024.26.2.278

Abstract

This research aims to evaluate the optimal level and incubation time for the production of hydrolytic enzymes from tempeh starter (TS), in order to increase the in vitro pepsin digestibility of Black Soldier Fly (BSF), Hermetia illucens, maggot flour. The materials used were commercial tempeh starter, pepsin, and 15 days of age dried BSF maggot. In this study, two experiments were conducted. In a factorial completely randomized design, the analysis of variance (ANOVA) was performed to assess the significance of treatment effects, and orthogonal polynomial contrasts were employed to identify specific linear and quadratic trends among the group means. In experiment 1, research was carried out to determine the optimal starter level and incubation time to produce hydrolytic enzymes from tempeh starter. In experiment 2, crude enzyme from the best treatment in the first stage was used to increase the pepsin digestibility of BSF maggot flour. The optimal protein content and enzyme activities of tempeh starter was 0.10-0.13% starter with an incubation time of 2.00-3.47 days. Meanwhile, the optimal pepsin digestibility of BSF maggot flour was 1.51% enzymes with a hydrolysis time of 23.87 hours. This analysis measurement of protein content and enzymatic activity of tempeh starter and in vitro digestibility of BSF flour represent the preliminary methodology used to initially select hydrolyzed BSF flour to be a source of protein in animal feed.
Co-Authors Agus Nurul Komarudin Agus Trianto Agustinah Setyaningrum, Agustinah Aji, Bayu Purnomo Ambariyanto , Andy Achmad Antonius Budi Susanto Ayu, Trifajriah Lutea Azidha, Lara Bahrun Bahrun Bambang Hartoyo Bramasta, Arrico Fathur Yudha Caribu Hadi Prajitno, Caribu Hadi Caribu Hadi Prayitno CH Prayitno, CH Chamidy, Ardian Nurrasyid CI Sutrisno, CI Diah Permata Wijayanti Dwi Haryanti, Dwi Ekayogiharso Ekayogiharso Eko Puji Hartono Fransisca Maria Suhartati Hasanah, Amanda Hendro Kisworo Ias Biondi Ibnu Pratikto Indra Budi Prasetyawan Irwani Irwani Ita Riniatsih Janan, Mufidah Nur Jarot Marwoto Jasmine Khairani Zainal Jenny Lukytasari Jusup Suprijanto Koesoemadji Koesoemadji Martinus, Ishak Maskur, Alif Muhammad Helmi Munru, Maestro Nadiyah, Sahda Fatimatun Novita Hindratiningrum Nugrahani, Triya Farida NUGROHO, TRI AJI Nur Hidayat Nurul Arifin Oscar Leonard J. Petrus Subardjo Prasetyo Prasetyo Prasetyo Prasetyo Pratama, Mohammad Rafi Pravitasari, Anggi Karina Prayoga, Bintang Purwoko, Agus Qurozi, Abdullah R. Singgih Sugeng Santosa Ria Azizah Rikoh Manogar Siringoringo S Anwar Saputra, Bagas Diar Sembiring, Yudhawira Bhaskara Sigar, Ihsan Yosinanda Sigit Heru Prasetya Sinulingga, Wilhelmina br Sitompul, Noel Mansen SRI RAHAYU Suharsono Suharsono Suharyo Hadisaputro T Widiyastuti, T Tambunan, Fran Ciputra Tarizareta, Britania Fitha Titin Widiyastuti Tiwi Ajeng Prameliasari Triyaningsih, Ni Nyoman Widya Tutus Wijanarko Wardhana Suryapratama Widianingsih Widianingsih Wijiatmo, Agan Wilis Ari Setyati Wirawan, Kadek Fendi