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"Telah dilakukan sampling makrozoobentos di Sungai Cengek bagian hulu yang melintasi Desa Payaman, Kota Salatiga pada bulan April 2013. Pengambilan sampel dilakukan dengan cara mengoleksi makrozoobentos, pada daerah sebelum percabangan, percabangan sebelah timur, dan percabangan sebelah barat. Sampel yang diperoleh diawetkan dengan alkohol 70% kemudian diidentifikasi di Laboratorium Taksonomi Hewan, Departemen Biologi FMIPA UI, Depok. Masing-masing pengambilan sampel dilakukan sebanyak dua pengulangan. Data hasil penelitian ditabulasi dan digunakan untuk penilaian kualitas perairan dengan indeks biotik.Berdasarkan hasil penelitian, diperoleh empat kelompok makrozoobentos yang dikelompokkan dalam Famili Heptageniidae, Libellulidae, Palaemonidae, dan Pachychilidae. Indeks eanekaragaman tergolong rendah, berkisar antara 0,42--0,9 dengan indeks dominansi berkisar 0,49--0,75. Berdasarkan indeks biotik diketahui bahwa kualitas perairan Sungai Cengek bagian hulu masuk ke dalam kategori perairan dengan kondisi yang baik, dengan nilai ASPT berkisar 6,25--6,5.

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Sampling of macrozoobenthos has been held at the upstream of Cengek River that crosses Payaman Village, Salatiga City in April, 2013. Sampling was carried out by collecting macrozoobenthos at the area before branching, eastern branching, and western branching of Cengek River. Samples that collected was preserved by 70% ethanol, and identified in Laboratory of Animal Taxonomy, Department of Biology, Faculty of Mathematics and Natural Science, University of Indonesia, Depok . Each sampling was performed two repetitions. The data were tabulated and used to measure the water quality by biotic index.Results of the research was found four group of macrozoobenthos that divided into family of Heptageniidae, Libellulidae, Palaemonidae, and Pachychilidae. The level of diversity rated low, ranged from 0,42 to 0,9 and dominancy index ranged from 0,49 to 0,75. Based on biotic index, the waterways quality of Cengek River upstream were divided into the fine condition river, with ASPT rate ranged from 6,25 to 6,5."

"Telah dilakukan penelitian untuk mengetahui struktur komunitas epifiton pada tumbuhan Ipomoea aquatica F. di lima situ Universitas Indonesia, Depok, Jawa Barat. Ditemukan 34 marga dengan kepadatan 983 ind/cm2. Situ Agathis memiliki epifiton dengan kepadatan 320 ind/cm2, Situ Mahoni sebesar 296 ind/cm2, Situ Puspa sebesar 136 ind/cm2, Situ Ulin sebesar 48 ind/cm2, Situ Salam sebesar 183 ind/cm2. Situ Agathis di dominasi oleh Crucigeniella (12%), Situ Mahoni di dominasi oleh Navicula (26%), Situ Puspa di dominasi oleh Navicula (50%), Situ Salam di dominasi oleh Diatom1 (74%), Situ Ulin di dominasi oleh Euglena (33,5%). Perairan di sekitar epifton di Ipomoea aquatica F. memiliki intensitas cahaya berkisar antara 0,26 m--0,40 m; suhu 26--29,5°C; pH 5--6,5; DO 5,9--8,64 ppm; BOD 1,5--2,7 ppm. Indeks keanekaan epifiton berkisar antara 0,15--0,365. Indeks kemerataan penyebaran epifiton berkisar antara 0,09--0,19. Indeks kesamaan menurut Hierarchical cluster dengan menggunakan program PAST v3 memiliki tingkat kesamaan epifiton di lima situ UI berkisar antara 24,34--47,44 yang berarti kesamaan di setiap situ tidak berbeda jauh.

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This research is aimed to know the epiphyton structure on Ipomoea aquatica F. in five situ at University of Indonesia, Depok, West Java. 34 genus have been found in those situ with density of 983 Ind/cm2. Situ Agathis, Situ Mahoni, Situ Puspa, Situ Ulin, and Situ Salam had epiphyton density 320 ind/cm2, 296 ind/cm2, 136 ind/cm2, 48 ind/cm2, 183 ind/cm2 respectively. Domination of Crucigeniella at Situ Agathis was 12%. Domination of Navicula at Situ Mahoni was 26%. Domination of Navicula at Situ Puspa was 50%. Domination of Diatom 1 at Situ Salam was 74%. Domination of Euglena at Situ Ulin was 33,5%. Brightness of light at around epiphyton in Ipomoea aquatica F.depht ranges 0,26 m--0,40 m. Temperature range from 26--29,5°C; pH: 5--6,5; DO: 5,9--8,64 ppm; BOD: 1,5--2,7 ppm. Epiphyton diversity index ranged 0,15--0,36. Epiphyton Evennes index ranged from 0,09--0,19. Similarity index in hierarchical cluster with program PAST v3 have level similarity on five situ range is 24,34--47,44 it meant similarity on five situ not significant diffirence."

"[ABSTRAKPengaruh warna wadah pemeliharaan terhadap kematangan gonad ikan rainbow kurumoi (Melanotaenia parva Allen, 1990) telah diteliti sebagai upaya peningkatan kualitas gonad indukan. Seratus delapan puluh ekor M. parva yang terdiri atas 90 ekor ikan jantan dan 90 ekor ikan betina berusia ± 7 bulan dibagi menjadi enam set perlakuan (K, P1, P2, P3, P4, dan P5); masing-masing dipelihara dalam 12 wadah polypropylene berwarna transparan, merah, biru, hijau, kuning, dan putih selama 30 hari. Ikan jantan dan betina dipelihara terpisah. Nilai IGS digunakan sebagai parameter utama dengan didukung oleh persentase sel spermatozoa dan sel oosit tahap V pada preparat histologi gonad ikan. Nilai IGS jantan dan betina tertinggi (0,873 % dan 2,617 %) terdapat pada P4 (wadah kuning), sedangkan nilai IGS jantan dan betina terendah (0,364 % dan 1,275 %) terdapat pada P5 (wadah putih). Persentase sel spermatozoa dan oosit tahap V tertinggi (60,01 % dan 29,05 %) terdapat pada P4 (wadah kuning), yaitu sedangkan persentase sel spermatozoa dan oosit tahap V terendah (28,62 % dan 11,07 %) terdapat P5 (wadah putih).ABSTRACTEffect of different tank colours on gonad maturity of kurumoi rainbowfish (Melanotaenia parva L.) was tested on this study. A hundred and eighty M. parva, consisted of 90 male and 90 female fishes at ± 7 months of age, was divided to six experimental groups (K, P1, P2, P3, P4, and P5), which kept for 30 consecutive days in 12 polypropylene tanks with 6 colour types: transparent, red, blue, green, yellow, and white, respectively. Male and female fishes was kept on different tanks. The GSI value was counted as the primary parameter, while the percentage of spermatid/spermatozoa and stage V oocytes was counted from gonadal histology preparations as supportive data. The highest GSI value of male and female groups (0,873 % and 2,617 %) was found on P4 (yellow tank), while the lowest GSI value of both gender (0,364 % and 1,275 %) was found on P5 (white tank). The highest percentage of spermatozoa and stage V oocytes (60,01 % dan 29,05 %) was found on P4 (yellow tank), while the lowest percentage of spermatozoa and stage V oocytes (28,62 % dan 11,07 %) was found on P5 (white tank).;Effect of different tank colours on gonad maturity of kurumoi rainbowfish (Melanotaenia parva L.) was tested on this study. A hundred and eighty M. parva, consisted of 90 male and 90 female fishes at ± 7 months of age, was divided to six experimental groups (K, P1, P2, P3, P4, and P5), which kept for 30 consecutive days in 12 polypropylene tanks with 6 colour types: transparent, red, blue, green, yellow, and white, respectively. Male and female fishes was kept on different tanks. The GSI value was counted as the primary parameter, while the percentage of spermatid/spermatozoa and stage V oocytes was counted from gonadal histology preparations as supportive data. The highest GSI value of male and female groups (0,873 % and 2,617 %) was found on P4 (yellow tank), while the lowest GSI value of both gender (0,364 % and 1,275 %) was found on P5 (white tank). The highest percentage of spermatozoa and stage V oocytes (60,01 % dan 29,05 %) was found on P4 (yellow tank), while the lowest percentage of spermatozoa and stage V oocytes (28,62 % dan 11,07 %) was found on P5 (white tank)., Effect of different tank colours on gonad maturity of kurumoi rainbowfish (Melanotaenia parva L.) was tested on this study. A hundred and eighty M. parva, consisted of 90 male and 90 female fishes at ± 7 months of age, was divided to six experimental groups (K, P1, P2, P3, P4, and P5), which kept for 30 consecutive days in 12 polypropylene tanks with 6 colour types: transparent, red, blue, green, yellow, and white, respectively. Male and female fishes was kept on different tanks. The GSI value was counted as the primary parameter, while the percentage of spermatid/spermatozoa and stage V oocytes was counted from gonadal histology preparations as supportive data. The highest GSI value of male and female groups (0,873 % and 2,617 %) was found on P4 (yellow tank), while the lowest GSI value of both gender (0,364 % and 1,275 %) was found on P5 (white tank). The highest percentage of spermatozoa and stage V oocytes (60,01 % dan 29,05 %) was found on P4 (yellow tank), while the lowest percentage of spermatozoa and stage V oocytes (28,62 % dan 11,07 %) was found on P5 (white tank).]"

"Data pengaruh suhu terhadap reproduksi ikan rainbow boesemani (Melanotaenia boesemaniAllen & Cross) diperlukan untuk mendukung upaya optimalisasi budidaya ikan tersebut. Tujuan penelitian ini adalah untuk mengetahui pengaruh suhu air terhadap indeks gonad somatik (IGS) dan kenampakan histologi gonad ikan rainbow boesemani. Sebanyak 75 ekor ikan jantan dan 75 ekor ikan betinadibagi secara merata ke dalam 5 akuarium ikan jantan dan 5 akuarium ikan betina, kemudian dipelihara pada suhu berbeda, yaknitanpa pengaturan suhu air (kontrol), suhu air 260C, suhu air 280C,suhu air 300C, dansuhu air 320C, selama 30 hari. Rerata IGS tertinggi terdapat pada ikan yang dipelihara pada suhu 260C dengan nilai 1,43%(ikan jantan) dan 3,6%(ikan betina), sedangkan rerata IGSterendah terdapat pada ikan yang dipelihara pada suhu 320C dengan nilai 0,82% (ikan jantan) dan 1,33%(ikan betina). Rerata persentase spermatid/spermatozoa tertinggi terdapat pada ikan jantan yang dipelihara pada suhu 280C dengan nilai 23,1% sedangkan yang terendah terdapat pada ikan jantan yang dipelihara pada suhu 320C dengan nilai 18%. Rerata persentase oosit tahap V tertinggi terdapat pada ikan betina yang dipelihara pada suhu 260C dengan nilai 27,4% sedangkan yang terendah terdapat pada ikan betina yang dipelihara pada suhu 320C dengan nilai 10,6%.

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Information about the effect of water temperature on reproduction of boesemani rainbowfish (Melanotaenia boesemani Allen & Cross) is needed to support optimalization of its cultivation. This research was done to acknowledge the effect of water temperature on gonadosomatic index (GSI) and gonad histology of boesemani rainbowfish. As much as 75 male and 75 female fish were evenly distributed into 5tank of male fish and 5 tank of female fish, then these fish were kept in various water temperature, namelywithout water temperature arrangement, 260C water temperature, 280C water temperature, 300C water temperature, and 320C water temperature,for 30 days. The highest average of GSI found on fishes kept on 260C by the value of 1.43% (male) and 3.6% (female), while the lowest found on fishes kept on 320C by the value of 0.82% (male) and 1,33% (female). The highest average of spermatid/spermatozoa percentage found on male fishes kept on 280C by the value of 23.1%, while the lowest found on male fishes kept on 320C by the value of 18%. The highest average of level 5 oocyte percentage found on female fishes kept on 260C by the value of 27.4%, while the lowest found on female fishes kept on 320C by the value of 10.6%."

"ABSTRAKTelah dilakukan penelitian pada bulan Januari hingga Juni 2016 mengenai analisisproksimat, uji organoleptik, dan uji fisik pakan ikan hias yang memanfaatkantepung bintang laut mahkota duri (Acanthaster planci) sebagai substitusi proteintepung ikan. Penelitian bertujuan untuk mengetahui dan membuat formulasi pakanikan hias dengan substitusi tepung A. planci yang memiliki kualitas terbaikberdasarkan analisis proksimat, uji organoleptik, dan uji fisik serta untukmengetahui kandungan gizi dari pakan ikan hias dengan substitusi tepung A.planci tersebut. Pakan yang dibuat yaitu pakan yang mengandung protein sebesar37%, 27%, dan 17% dimana sumber protein yang digunakan berasal dari dedakdan tepung ikan yang sebagian disubstitusi dengan tepung A. planci. Pakansampel dianalisis proksimat (kadar air, protein, lemak, serat kasar, bahan ekstraktanpa nitrogen, kadar abu), uji organoleptik (tekstur, aroma, warna, rasa), dan ujifisik (tingkat kekerasan, kecepatan pecah, kecepatan tenggelam). Hasil penelitianmenunjukkan bahwa pakan dengan kandungan protein sebesar 27% merupakanpakan dengan formulasi terbaik karena memiliki kandungan gizi, kriteriaorganoleptik, dan kriteria fisik yang terbaik

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ABSTRACTA research about proximate analysis, organoleptic and physical test of fish mealcontained crown of thorns starfish (Acanthaster planci) powder as a fish powderprotein substitution has been conducted on January until June 2016. The researchaims to produce the best quality fish meal formulation with A. planci powdersubstitute based on data of proximate analysis, organoleptic and physical test aswell as knowing the nutrient content of that fish meal. The meal contain protein of37%, 27%, and 17% made of brans and fish powder that substituted with A. plancipowder. Each fish meal types were subjected to proximate analysis (water content,protein, lipid, fiber, extract materials without nitrogen, ash content), organoleptictest (texture, flavor, color, taste), and physical test (hardness level, cracking speed,sinking speed). The results showed that fish meal of 27% protein was the bestmeal formulation because it?s nutrient content, organoleptic and physical criteriawas better than others."

"Penelitian bertujuan untuk mengetahui kelimpahan mikroplastik pada kerang hijau Perna viridis berbagai ukuran, mengetahui organ tubuh kerang hijau yang paling banyak menyimpan mikroplastik, serta mengetahui korelasi antara kelimpahan mikroplastik pada kerang hijau, air, dan sedimen. Sampel kerang hijau, air, dan sedimen diambil dari 3 stasiun berbeda dengan jarak masing-masing sekitar 500 m. Analisis kelimpahan mikroplastik dilakukan dengan cara mengisolasi mikroplastik pada setiap sampel. Isolasi pada sampel kerang dilakukan dengan melarutkan kerang di dalam larutan HNO3 65, sementara sampel air dan sedimen dilakukan dengan cara pemisahan berdasarkan ukuran dan massa jenis dengan perendaman dalam larutan NaCl jenuh. Hasil yang didapatkan, yaitu rata-rata kelimpahan mikroplastik pada kerang hijau ukuran 3, 6, dan 9 cm, yaitu 5,35; 24,99; dan 39,00 partikel/gram. Mikroplastik kelompok fiber dominan pada sampel kerang. Rata-rata kelimpahan mikroplastik di air dan sedimen, yaitu 13,15 partikel/L air laut dan 0,92 partikel/g sedimen kering. Mikroplastik kelompok film dominan pada sampel air dan sedimen. Sementara, kelompok pelet tidak ditemukan pada ketiga sampel. Terdapat korelasi antara kelimpahan mikroplastik dengan ukuran cangkang kerang, maupun dengan kelimpahan mikroplastik kelompok film dan fiber pada air dan sedimen.

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Research on abundance of microplastic in green mussel Perna viridis, water and sediments in Kamal Muara, North Jakarta has been done. The research determined the abundance of microplastic in green mussel of various sizes, the organ of the green mussels most storey microplastic, and the correlation between abundance of microplastic in green mussel, water, and sediment. Samples of green mussel, water and sediments were taken from 3 different stations with a distance of about 500 meters each. Analysis of abundance of microplastic was done by isolating microplastic in each sample. The isolation of the green mussel samples was done by dissolving the mussels in the HNO3 solution, while the water and sediment samples were performed by separation by size and density by immersion in a saturated NaCl solution.

The results obtained were, on average, abundance of microplastic in green mussel size 3, 6, and 9 cm ie, 5.35 24.99 and 39,00 particles gram. Microplastic fiber was dominant in mussel sample. The average abundance of microplastic in water and sediment are 13.15 particles L of sea water and 0.92 particles gram of dry sediment. Microplastic film was dominant in water and sediment samples. Meanwhile, pellet was not found in all three samples. There was a correlation between abundance of microplastic with green mussel size, as well as with abundance of microplastic of film and fiber in water and sediment."

"ABSTRACTCoenobita perlatus merupakan species kelomang terestrial yang termasuk ke dalam genus Coenobita. Seperti kelomang pada umumnya, C. perlatus bergantung pada penggunaan cangkang Gastropoda untuk melindungi abdomennya. Berdasarkan penelitian terhadap species kelomang lain, tiap species memiliki pola pemilihan cangkang yang unik dan konsisten. Tiap species memiliki preferensi intrinsik, yang memungkinkan kelomang untuk menilai kesesuaian cangkang berdasarkan arsitektur dan ukurannya. Perilaku seleksi cangkang oleh C. perlatus belum banyak diteliti, dan informasi terkait preferensinya hanya didasarkan observasi di alam. Penelitian yang dilakukan penulis bertujuan untuk mengetahui urutan tingkat preferensi C. perlatus terhadap penggunaan cangkang Gastropoda Turbo setosus, Hexaplex cichoreum, dan Hemifusus ternatanus, menggunakan uji multiple alternative, dan untuk menentukan keeratan antara komponen morfometrik kelomang dengan dimensi cangkang. Hasil menunjukkan tingkat konsistensi yang tinggi dalam urutan pemilihan cangkang (W = 0,5544), tetapi tidak terdapat tingkat keeratan yang tinggi antara komponen morfometrik kelomang dengan dimensi cangkang (R2 = 0,0031-0,4146), meski pasangan variabel dengan nilai keeratan tertinggi diperoleh. Hal ini disebabkan arsitektur ketiga macam cangkang sangat berbeda dan keuntungan yang diperoleh individu dari menggunakan cangkang tertentu dapat berbeda pula, sementara cangkang dengan ukuran spesifik sering tidak tersedia di alam, sehingga individu cenderung mempertimbangkan bentuk cangkang tetapi mengabaikan perbedaan yang kurang signifikan pada ukuran cangkang.

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ABSTRACTCoenobita perlatus is a terrestrial hermit crab belonging to the genus Coenobita. Like most other Paguroids, C. perlatus utilize empty shells to protect its abdomen. According to research conducted on other species, the intrinsic preference of each species allows it to assess the suitability of a shell based on its architecture and size, subsequently establishing a consistent sequence of preference among different Gastropod shells. The selection behaviour of C. perlatus, however, has never been properly studied and available information regarding its preference is mostly based on observation in the wild. This research aims to investigate the sequence of preference established by C. perlatus when assessing the shells of Turbosetosus, Hexaplex cichoreum, Hemifusus ternatanus, with multiple alternative test, and to determine the degree of closeness between crab morphometry and shell dimension variables. The result shows a significant consistency in the sequence of shell selection (W = 0.5544), whilst no significant degree of closeness is recorded between any data pair (R2 = 0.0031-0.4146). The different features of the shells greatly affects crabs fitness triggering a noteworthy selective behaviour. On the other hand, specific sized shell is often unavailable forcing crabs to ignore slight difference in size when choosing a shell."

"Polusi air dapat disebabkan oleh limbah rumah tangga, limbah industri, atau kegiatan pertanian. Ini dapat meningkatkan kandungan senyawa organik dan anorganik dari air. Situ Gede adalah tempat yang terletak di desa Situ Gede, Jawa Barat. Situ Gede adalah tempat rekreasi di bogor. Penelitian di sana bertujuan untuk mengetahui kondisi kualitas air yang besar dengan menggunakan indeks saprobik. Metode pengambilan sampel air dilakukan secara vertikal dan horizontal. Hasil analisis kualitas air terdapat indeks saprobik besar di stasiun 1 ke stasiun 3 yang mengalami ∝ -Mesosaprobik / Polisaprobik ke Polisaprobik / ∝ -Mesosaprobik. Indeks Saprobik dengan tingkat polusi yang sangat tinggi ditemukan di stasiun 3. Kelimpahan fitoplankton di stasiun 1 dan stasiun 3 setiap minggu mengalami peningkatan horisontal tertinggi dan kelimpahan di stasiun 3. Sementara itu, kelimpahan tertinggi secara vertikal di stasiun 2.

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Water pollution can be caused by household waste, industrial waste, or agricultural activities. This can increase the content of organic and inorganic compounds of water. Situ Gede is a place located in village of Situ Gede, West Java. Situ Gede is Recreational area in Bogor. The research there aims to find out the condition of large water quality by using the saprobic index. Method of taking water sample is done vertically and horizontally. The results of the analysis of the water quality there are large saprobic index at station 1 to station 3 experiencing ∝ - Mesosaprobik/Polisaprobik to Polisaprobik/∝ - Mesosaprobik. The Saprobic index with a very high level of pollution is found at station 3. The phytoplankton abundance at station 1 and station 3 every week experiences the highest horizontal increase and abundance at station 3. Meanwhile, the highest abundance vertically at station 2."

"ABSTRAKFisheries resources management aimed to improve community welfare especially fishermen and to conserve the fisheries resources and its environment, to keep the capture fisheries business system sustainability efficient and profitable. Beside marketing guarantee, optimalization between fisheries resources stock and fishing effort in each of fishing area. The improvement of capture fisheries must be held based on the existing condition, i.e.: marketing in determining the priority commodity, maximum sustainable yield and fisheries resources utilization level to determine limit of fisheries resources utilization chance, fishing technology and socio-economic condition to identify the fishermen's earns and absorption of labors related to capture fisheries sector. Based on the marketing aspect analysis, it is determined that the kinds of priority commodity in Southern of West Java Province are lobster, shrimp, tuna, skip jack tuna, and layar. Hence, the potency (MSY) and fisheries resources utilization level of the priority commodity still has very large chance to improve, except lobster has large enough chance. Based on the scoring approach, combined from many technical aspects, financial aspects and social aspect and linear goal programming analysis can be concluded that the proper fishing technology in southern waters of West Java Province are: (1) Purse seine 80 unit, (2) Denish same 127 unit, (3) Lines 144 unit, (4) Gillnet 80 unit, (5) Trammel net 376 unit."