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Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology
Published by Universitas Diponegoro
ISSN : 18584748     EISSN : 25490885     DOI : -
Core Subject : Education,
Education
SAINTEK PERIKANAN (p-ISSN: 1858-4748 dan e-ISSN: 2549-0885) adalah jurnal ilmiah perikanan yang diterbitkan oleh Jurusan Perikanan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro. Jurnal ini diterbitkan 2 (dua) kali setahun (Februari dan Agustus).
Arjuna Subject : -
Articles 492 Documents
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PERBEDAAN UKURAN MATA JARING GILLNET TERHADAP HASIL TANGKAPAN IKAN TEMBANG Sardinella gibbosa YANG DIDARATKAN DI MUNCAR, BANYUWANGI Ledhyane Ika Harlyan; Fransisca Sariuli Tobing; Gatut Bintoro; Vita Rumanti Kurniawati; Muhammad Arif Rahman; Mihrobi Khalwatu Rihmi
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 2 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.2.99-107

Abstract

Penggunaan alat tangkap pasif seperti gillnet pada pengelolaan perikanan Tembang diharapkan mampu mengurangi kapasitas penangkapan. Namun sayangnya terbatasnya referensi terkait selektivitas dan penggunaan mata jaring gillnet yang berbeda untuk sumberdaya ini akan beresiko pada ketidaktepatan pengelolaan perikanan Tembang di perairan Muncar, oleh karena itu kajian tentang perbedaan ukuran mata jaring gillnet terhadap sumberdaya ikan Tembang perlu dilakukan.  Penelitian dilakukan pada bulan Februari hingga Maret 2020 dengan mengobservasi pengoperasian gillnet hanyut permukaan dengan ukuran mata jaring 2,54 cm dan 3,17 cm terhadap hasil tangkapan ikan Tembang. Rancangan penelitian mempertimbangkan dua waktu pengoperasian alat tangkap yang umum digunakan nelayan setempat yaitu pada pagi hari (03.00 – 07.00) dan sore hari (15.00 – 19.00). Analisis data dilakukan dengan menggunakan analisis selektivitas alat tangkap gillnet dan analisis rancangan acak lengkap (RAL) faktorial dua faktor, yaitu faktor ukuran mata jaring dan waktu pengoperasian dengan pengulangan yang dilakukan sebanyak enam kali.  Hasil selektivitas terhadap dua ukuran mata jaring gillnet dengan pertimbangan ukuran ikan Tembang pertama kali matang gonad (Lm) sebesar 13 cm mengindikasikan bahwa gillnet dengan mata jaring ukuran 3,17 cm mampu menangkap ikan Tembang dengan ukuran layak tangkap. Hal ini sejalan dengan hasil analisis RAL faktorial yang menyatakan bahwa gillnet dengan ukuran mata jaring 3,17 cm menghasilkan volume hasil tangkapan ikan tembang lebih besar dibanding ukuran mata jaring 2,54 cm dengan pengoperasian alat tangkap gillnet hanyut di sore hari. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa penggunaan mata jaring gillnet yang relatif lebih besar mampu mengurangi resiko terjadinya growth overfishing karena ikan yang tertangkap telah melalui fase matang gonad. The use of passive gear like gillnet for Goldstripe Sardinella fisheries management might lead to a decrease in fishing capacity. Limited references related to gillnet selectivity and the use of difference mesh size for Goldstripe sardinella may cause the risk of its mismanagement in Muncar. This work was conducted from February to March 2020 by observing fishing operation of surface drift gillnet with mesh size 2.54 cm and 3.17 cm and its Goldstripe sardinella catches. Research design was applied for two fishing operations, morning (03.00 – 07.00) and afternoon setting (15.00 – 19.00). Gear selectivity analysis and analysis of variance (ANOVA) two factors, mesh sizes and setting time, with six replications were applied for analyzing the catch data.  The results of two-mesh size selectivity showed that gillnet with mesh size 3,17 cm provides catches with length more than 13 cm (length at first maturity, Lm). This was also in line with the results of ANOVA test suggested that gillnet with the size of 3,17 can produce more fish compared to gillnet with that of 2,54 cm by afternoon gillnet setting. It can be concluded that the use of bigger mesh size can relatively reduce the risk of growth overfishing since the caught fish might be passed the maturity phase.
PERBANDINGAN KANDUNGAN MIKROPLASTIK PADA KERANG DARAH DAN KERANG TAHU DARI PERAIRAN DESA BANYUURIP, GRESIK Defri Yona; Carina Daisy Samantha; Rarasrum Dyah Kasitowati
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 2 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.2.108-114

Abstract

Keberadaan mikroplastik di perairan yang terus meningkat telah diketahui berpotensi masuk ke dalam berbagai jenis biota laut termasuk kerang. Kerang darah (Tegilarca granosa) dan kerang tahu (Meretrix meretrix) adalah jenis organisme yang hidup pada substrat perairan dan bersifat filter feeder sehingga potensi penyerapan mikroplastik cukup tinggi. Penelitian ini bertujuan untuk menganalisis serta membandingkan akumulasi mikroplastik pada kedua jenis kerang di perairan Desa Banyuurip, Gresik. Pengambilan data lapang terdiri dari sampel sedimen dan kerang dilakukan pada Bulan Maret 2019 pada lima stasiun berbeda yaitu muara Sungai Bengawan Solo, laut terbuka, hutan mangrove, tempat pelelangan ikan dan tambak. Pada setiap stasiun diambil sebanyak ± 1 kg sedimen serta 10 ekor kerang per spesies dengan ukuran cangkang 4-6 cm yang diasumsikan sebagai fase kerang dewasa. Analisis mikroplastik dilakukan di laboratorium melalui tahapan destruksi bahan organik menggunakan H2O2 30 % serta identifikasi mikroplastik secara visual menggunakan mikroskop. Tiga jenis mikroplastik (fiber, film dan fragmen) ditemukan pada sedimen dan kedua jenis kerang dengan dominansi jenis fiber (> 75 %) diikuti oleh fragmen (20 %) dan film (< 2 %). Fiber dan fragmen ditemukan pada seluruh sampel kerang, sedangkan film hanya ditemukan pada beberapa sampel saja. Tidak terdapat perbedaan kelimpahan total mikroplastik antar jenis kerang, namun kelimpahan total mikroplastik ditemukan berbeda antar stasiun penelitian (p < 0,01) dengan kelimpahan tertinggi pada kerang yang hidup di habitat mangrove. Hutan mangrove yang selalu mendapat masukan air laut serta jenis akar pohon mangrove yang bersifat menjebak sedimen memungkinkan akumulasi mikroplastik cukup tinggi sehingga dapat mempengaruhi keberadaan mikroplastik pada kerang. The quantity of microplastic in the marine environment has increased significantly and it could lead to the accumulation in the marine organisms such as mussels and clams. Blood cockle (Tegilarca granosa) and Asiatic hard clam (Meretrix meretrix) are benthic organisms and their feeding mode could expose them to microplastic in the sediment. This study aimed to analyze and compare microplastic accumulation in both mussels in Banyuurip coastal water, Gresik. Sediment and mussel samples were collected on March 2019 from five sampling stations: Bengawan Solo river mouth, seaward area, mangrove, fish landing station dan shrimp culture site. About 1 kg sediment samples and 10 individual mussels in the size of 4−6 cm from each species were collected from each sampling station. Microplastic analysis was conducted in the laboratory by digesting organic matter using H2O2 30 % and the identification was conducted visually using microscope. Three types of microplastic (fiber, film and fragment) was found from the sediment and mussel samples with the domination of fiber (75 %) followed by fragment (20 %) dan film (< 2 %). Fiber and fragment were observed in all sediment and mussel samples, whereas film was available only in certain samples. Statistical test revealed no significant difference in the concentrations of microplastic between the two mussels, however, the differences were observed in the concentrations of microplastic among the sampling stations (p < 0.01).  Higher concentration of microplastic was found in the mussels from mangrove area due to its rooting system that could trap microplastics.
KARAKTERISTIK HAMBUR BALIK AKUSTIK PADA IKAN KAKAKTUA (Chlorurus sordidus) MELALUI PENGUKURAN SECARA EX-SITU DENGAN METODE AKUSTIK Deddy Bakhtiar; Indra Jaya; Henry M Manik; Hawis H Madduppa
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 4 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.4.271-278

Abstract

Ikan kakaktua (Chlorurus sordidus) merupakan salah satu ikan herbivora pada ekosistem terumbu karang yang memiliki peran dalam menjaga kesehatan terumbu karang. Penelitian ini bertujuan untuk mempelajari karakteristik hambur balik akustik ikan kakaktua dan hubungannya dengan ukuran panjang ikan. Manfaat dari penelitian ini berguna untuk pendugaan distribusi ukuran dan kelimpahan ikan kakaktua di suatu perairan. Pengukuran hambur balik akustik dilakukan secara ex-situ menggunakan metode tethered, dimana ikan kakaktua digantung pada kedalaman 2 meter di bawah transduser dan di sounding dengan echosounder Simrad EK-15 pada frekuensi 200 kHz. Data hasil perekaman dianalisis dengan software Echoview 8 untuk memperoleh data target strength (TS). Hasil penelitian menunjukkan bahwa hambur balik ikan kakaktua (C. sordidus) memiliki nilai TS rata-rata -49.42 dB pada ukuran panjang baku berkisar 14 sampai 22 cm. Perbedaan nilai TS pada ikan kakaktua diduga dipengaruhi ukuran panjang tubuh, panjang gelembung renang dan aktifitas renang.  Rasio ukuran panjang gelembung renang dan panjang tubuh tidak menunjukkan keterkaitannya dengan nilai TS. Hubungan antara TS dan panjang baku ikan kakaktua (C. sordidus) diformulasikan dalam persamaan TS = 10,43 Log SL – 62,65 (R2 = 0,752). Hasil ini berbeda dengan ketetapan Love (1977) dimana hambur balik akustik dari ikan merupakan kuadrat dari ukuran panjang ikan yang tetapkan dengan nilai slope (b) sebesar 20. Parrot fish (Chlorurus sordidus) is one of the herbivorous fish in coral reef ecosystems that has a role in maintaining the health of coral reefs. This study aims to study the characteristics of acoustic backscattering of parrot fish and their relationship to fish length measurements. The benefits of this study are useful for estimating the size and abundance distribution of parrot fish in a waters. Acoustic backscattering measurements were carried out ex-situ using the tethered method, where the parrot fish was hung at a depth of 2 meters below the transducer and sounded with a Simrad EK-15 echosounder at a frequency of 200 kHz. Recording data were analyzed with Echoview 8 software to obtain target strength (TS) data. The results showed that the backscatter of parrot fish (C. sordidus) had an average TS value of -49.42 dB at standard lengths ranging from 14 to 22 cm. Differences in TS values in parrot fish are thought to be influenced by body length, swimbladder length and swimming activity. The ratio of the size of the swimbladder length and body length does not indicate an association with TS values. The relationship between TS and standard length of parrot fish (C. sordidus) was formulated in the equation TS = 10.43 Log SL - 62.65 (R2 = 0.752). This result is different from the Love (1977) provision where the acoustic backscatter of a fish is the square of the length of the fish set with a slope (b) of 20. 
PELEPASAN DENSITAS Zooxanthellae KARANG Acropora sp. PADA BEBERAPA TINGKAT SALINITAS Zulfana Fikru Sifa; Pujiono Wahyu Purnomo; Diah Ayuningrum
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 2 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.2.151-156

Abstract

Ekosistem terumbu karang sangat dipengaruhi oleh faktor-faktor lingkungan laut, salah satunya salinitas. Tekanan salinitas tinggi (hipersaline) maupun rendah (hiposaline) dapat menyebabkan karang menjadi stress osmotik sehingga zooxanthellae akan keluar dari polip dan menyebakan bleaching serta dapat mengakibatkan kematian karang dalam jangka panjang. Tujuan penelitian ini adalah untuk mengetahui pengaruh konsentrasi salinitas hipo dan hiper-salin terhadap densitas zooxanthellae serta hubungannya terhadap fotosintesis (NPP), respirasi dan Gross Primary Productivity (GPP). Penelitian ini menggunakan metode eksperimental yang dilaksanakan pada 13 November 2019 – 7 Februari 2020 di Laboratorium Pengembangan Wilayah Pantai (LPWP). Karang yang dipergunakan sebagai objek penelitian adalah Acropora sp. yang diambil dari perairan Pulau Panjang, Jepara. Konsentrasi salinitas yang digunakan yaitu 25 o/oo, 30 o/oo, 35 o/oo dan pengamatan dilakukan dengan interval waktu ke- 0, 3, 6 dan 9 hari. Hasil penelitian menunjukkan bahwa perbedaan konsentrasi salinitas berpengaruh nyata terhadap pelepasan zooxanthellae. Konsentrasi 25 o/oomenyebabkan tekanan pelepasan tertinggi dengan penurunan sebanyak 21 ekor per hari. Densitas zooxanthellae mempengaruhi nilai fotosintesis (NPP), respirasi dan Gross Primary Productivity (GPP) karang. Semakin rendah densitas zooxanthellae maka cenderung semakin rendah fotosintesis (NPP), respirasi serta  gross primary productivity (GPP) karang Acropora sp. Coral reef ecosystems are strongly influenced by marine environment factors, one of which is salinity. The effect of high salinity (hipersalin) and low salinity (hiposaline) on corals causes osmotic stress so that zooxanthellae will come out of polyps may cause bleaching and coral death in long-term exposure. The purpose of this study is determining the effect of several salinity concentrations on zooxanthellae density and their relationship to photosynthesis (NPP), respiration and primary productivity (GPP). This research used experimental method was conducted on November 13th – February 7th, 2020 at Coastal Development Laboratory (LPWP). Corals used as research objects are Acropora sp. taken from the waters of Pulau Panjang, Jepara. Acropora sp. is given salinity concentration treatment (25 o/oo, 30 o/oo, 35 o/oo). Observations were made at 0, 3, 6 and 9 day time intervals. The results showed that the difference in salinity concentration significantly affected the density of zooxanthellae. Salinity concentration 25 o/oo treatment causing the highest zooxanthellae release pressure with a decrease of 21 animals per day. Zooxanthellae density affects the value of photosynthesis (NPP), respiration and gross primary productivity (GPP) of corals. The lower the zooxanthellae density, the lower the NPP, respiration and GPP of corals tends to be.
ANALISIS BIOEKONOMI PERIKANAN LAUT DI PESISIR KOTA SEMARANG (Bioeconomic Analysis of Marine Fisheries in The Coastal City of Semarang) Imam Triarso; Bambang A Wibowo; Abdul Kohar Mudzakir
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 2 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.2.146-150

Abstract

Pesisir Semarang memiliki potensi sumberdaya ikan meskipun tren produksinya cenderung menurun terutama setelah tahun 2015. Penurunan produksi tersebut berpotensi memiliki dampak terhadap kesejahteraan 1068 nelayan di Kota Semarang. Tujuan penelitian ini untuk menganalisis bioekonomi perikanan laut di pesisir Kota Semarang. Hasil penelitian menunjukkan bahwa CPUE perikanan laut di pesisir Semarang cenderung menurun. Sedangkan fungsi produksi perikanan lautnya mengikuti persamaan: C = 1418,6 E - 0,803606616 E2. Nilai EMSY perikanan laut di pesisir Semarang sebesar 883 nelayan, sedangkan nilai EMEY sebesar 504 nelayan. Terbukti bahwa tingkat pemanfaatan sumberdaya ikan di pesisir Semarang telah mengalami over-fishing, baik secara biologi maupun ekonomi, sehingga pemanfaatan sumberdaya ikan di pesisir Semarang perlu diatur untuk menjaga keberlanjutan sumberdaya ikan dan profesi nelayan. The coast of Semarang has potential for fish resources, although the trend of production tends to decline, especially after 2015. This decline has the potential (negative) impact on the welfare of 1,068 fishermen in Semarang City. The purpose of this study was to analyze the bioeconomics of marine fisheries in the coastal area of Semarang City. The results showed that the CPUE of marine fisheries on the coast of Semarang tended to decrease. Meanwhile, the marine fishery production function follows the equation: C = 1418.6 E - 0.803606616 E2. The EMSY value of marine fishery on the coast of Semarang is 883 fishermen, while the EMEY value is 504 fishermen. It is proven that the level of utilization of fish resources on the coast of Semarang has experienced over fishing, both biologically and economically, so that the utilization of fish resources on the coast of Semarang needs to be regulated to maintain the sustainability of fish resources and fishermen profession.
COMMUNITY STRUCTURE AND DIVERSITY OF PHYTOPLANKTON IN LEMUKUTAN ISLAND WATERS, WEST KALIMANTAN Nora Idiawati; Ikha Safitri; Mega Sari Juane Sofiana
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 2 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.2.122-129

Abstract

Phytoplankton plays an important role in marine ecosystems as  primary producer, as the basis of food chains and the food web, and are widely used as bioindicators to monitor water condition. The study of phytoplankton is the primary interest to explore aquatic resources for blue biotechnology applications in conditions as a live feed, antibacterial, antiviral, antioxidant, pharmaceutical, cosmetics, possibly food and health industry. The study aims to assess the composition, abundance and diversity of phytoplankton community in Lemukutan Island waters of West Kalimantan. The present study found 31 genera of phytoplankton, consisted of Bacillariophyceae (28 genera) and Dinophyceae (3 genera). In term of contribution, Bacillariophyceae were found to be dominant (93.035%) than dinophyceae (6.965%). The abundance of phytoplankton varied between 636.91 to 2034.48 cell.L-1. The diversity index (H’), the evenness (E) index, and the dominance (C) index ranged from 1.959–2.579, 0.582–0.868, 0.094–0.283, respectively. The result showed that the diversity index was moderate, the evenness index was high, and the dominance index was low. 
ECOLOGICAL NICHE BASED ON FISH FOOD COMPETITION AND FEEDING HABIT PATTERNS IN THE JATIBARANG RESERVOIR Churun Ain; Sutrisno Anggoro; Dian Wijayanto; Siti Rudiyanti; Afifatul Isroliyah
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 4 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.4.279-284

Abstract

The purpose of this study was to determine ecological niche, the types of fish caught using gillnet and fishhook, the abundance of plankton, feeding habits and food competition in Jatibarang reservoir. The research was conducted from July until October, 2020. Tilapia (Oreachromis niloticus), Milkfish (Chanos chanos), Grass Carp (Ctenopharyngodon idella), Java Barb (Barbonymus gonionotus), and Red Devil (Amphilophus amarillo) were several types of fish found in the Jatibarang Reservoir. The total abundance of plankton was 4220 ind /, with L.Chlorophyceae dominating with a value 1780 ind / L and Zooplankton with the lowest abundance value of 20 ind / L. The result of the dominant Index of Preponderence (IP) showed Chlorophyceae class as the staple food of Tilapia, Grass Carp and Java Barb with values of 49.86%, 45.16% and 52.34% respectively. Milk fish and Red Devil had no main food (IP < 40%). The others class of plankton (Bacillariophyceae, Coscinodiscophyceae, Dinophyceae, Euglenoidea Cyanopyceae, Fragilariophyceae, and Zygnematophyceae) appeared as complementary foods (IP value 4-40%) and as additional food (IP value lesser than 4%). Milkfish was also found to have the highest ecological niche value of 4.577 and the Red Devil with the lowest value. The result of the niche overlap indicated the strongest good competition occurred between Tilapia and Gras Carp with a yield value of 1, and the lowest overlap value was found between Milkfish and Red Devil.
THE LEAF COLOUR OF MANGROVE (Rhizophora mucronata Lamk) IN TERMS OF ENVIRONMENTAL FACTORS IN MANGROVE FOREST OF MOJO VILLAGE, PEMALANG, INDONESIA Niniek Widyorini; Siti Rudiyanti; Suryanti Suryanti; Churun Ain; Untung Ismoyo
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 4 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.4.285-295

Abstract

Mangrove (Rhizopora mucronata) is one kind of mangrove vegetation that planted on rehabilitation area of Mojo village’s mangrove forest. This species was choosen due easily obtained and sowed so that it dominated in the location. This research aimed to know the conditioning aspect from its leaves color and environmental factors from September - October 2019 in the Mojo village's mangrove forest. A total of 405 leaf samples were chosen in the same condition and derived from three research ie the zone closest to the sea, the zone closest to the river and the Central Zone. The leaf tip has the highest range of leaves color than the other leaf parts. Based on two-way ANOVA analysis, the observed zones having a difference of each other also the observed leaf parts too, while the interaction of them having no distinction significantly. The average color value on the part of the upper leaf surface was 115.3º and the under leaf surface was 88.55º more dynamic than the undersurface. The result of Pearson's correlation analysis was 0,396 that means low. Based on PCA analysis, the leaf color on the part of the upper leaf surface was negatively correlated with soil salinity in the location.
EFFECT OF ENVIRONMENTAL PARAMETERS ON THE VALUE OF HUE SAND DOLLARS IN KARIMUNJAWA ISLANDS CENTRAL JAVA INDONESIA Suryanti Suryanti; Sutrisno Anggoro; Churun A’in; Wiwiet Teguh Taufani
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 18, No 3 (2022): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.18.3.%p

Abstract

Sand dollar is one among many echinoid groups with unique habitat preferences in the coastal waters. The hue (color) of sand dollar is one of the unique aspects, but currently, the information is still very limited. The purpose of this study is to investigate the value of hue sand dollar in Karimunjawa waters and investigate the condition of environmental parameters in Karimunjawa waters so that it can further analyze the environmental effect on hue sand dollar levels descriptively. The research was carried out in Karimunjawa islands, including Karimunjawa, Menjangan Kecil, and Cemara Kecil islands in June – July 2019. Sampling was carried out using line-transect with the transect length of 25 m. Four sampling stations were occupied at each island. The observation parameters were including sea surface temperature, pH, DO, organic matter, and seafloor coverage such as coral, rubble, and sand. Hue value was analyzed with Haphazard sampling method, using Adobe Photoshop. Data analysis was conducted with ANOVA and regression. The result showed there were variations in environmental parameters, including the significant difference of pH, organic matter, and rubble coverage. The hue of sand dollar has also differed significantly among islands.  Regression analysis showed significant effect from pH, coral coverage and rubble coverage on the hue value of sand dollar with the formula: ln (Y) = 20.867– 2.364(X1) + 6.608e-5(X2)+ 1.271e-4(X3); while the determination coefficient was 0.849 (p = 0.001). The effect of environmental parameters on the hue value of sand dollar might occur indirectly, but due to the change of pigment composition and concentration.
PENGARUH KRIOPROTEKTAN DIMETIL SULFOKSIDA DOSIS BERBEDA DALAM EKSTENDER MADU TERHADAP KUALITAS SPERMA IKAN BELIDA SELAMA MASA PENYIMPANAN Danang Yonarta; Mochamad Syaifudin; Ferdinand Hukama Taqwa; Tanbiyaskur Tanbiyaskur; muhammad Fery Artha
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 18, No 2 (2022): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.18.2.113-118

Abstract

Krioprotektan merupakan salah satu bahan yang berperan dalam penyelamatan bahan biologis pada kriopreservasi. Dimetil sulfoksida (DMSO) sebagai krioprotektan memiliki kemampuan cepat untuk penetrasi ke dalam sel pada saat equilibrasi (penurunan suhu) dan meninggalkan sel pada saat thawing (pencairan kembali). Penelitian ini bertujuan untuk mengetahui penggunaan dosis terbaik dari larutan krioprotektan yang menggunakan DSMO dalam ekstender madu terhadap karakteristik dari sel spermatozoa ikan belida pada proses kriopreservasi.  Penelitian ini dilakukan di Laboratorium Balai Pembibitan dan Hijauan Pakan Ternak (BPHPT) Sembawa pada bulan Maret sampai dengan November 2020. Ikan uji didapat dari hasil tangkapan dari alam, selanjutnya dilakukan pemeliharan selama 4 bulan untuk mendapatkan tingkat kematangan gonad yang maksimal. Pengambilan sel sperma dilakukan secara stripping, proses stripping dilakukan dengan mengurut bagian perut ikan secara memutar. Hasil penelitian menunjukkan bahwa lama waktu penyimpanan selama 28 hari pada P3 memberikan hasil terbaik terhadap motilitas (skor 3), nilai viabilitas sebesar 48,93%, lebih tingi dari Kontrol, P1 dan P2. Selain itu, pada perlakuan tersebut tidak ditemukan adanya abnormalitas yang terjadi pada sperma ikan belida. Cryoprotectant plays a role in saving biological material during cryopreservation. Dimethyl sulfoxide (DMSO) as a cryoprotectant has the ability to quickly penetrate into the cell at equilibration and leave the cell at thawing procedure. This study aims to determine the best dose of DSMO in honey extender to the characteristics of the featherback Fish spermatozoa cells in the cryopreservation process. This research was conducted at the Laboratory of Balai Pembibitan dan Hijauan Pakan Ternak (BPHPT) Sembawa from March to November 2020. The test fish were obtained from catches from nature, then reared for 4 months to get the maximum level of gonad maturity. Sperm cell retrieval is carried out by stripping, the stripping process is carried out by massaging the belly of the fish in a circular manner. The results showed that at storage time of 28 days, P3 gave the best results on motility (score 3), and the viability value was 48,93%, higher than Control, P1 and P2. In addition, the treatment did not show any abnormalities that occurred in the featherback fish sperm.

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