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Kepadatan Optimum dan Morfologi Spat Tiram Mutiara Pinctada maxima (Jameson) pada Pemeliharaan dengan Tingkat Kepadatan Berbeda

Journal Omni-Akuatika Vol 12, No 3 (2016): OmniAkuatika special edition Kripik SCiFiMaS
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

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Abstract

Stocking density was affected to the growth and survival rate of spat. The objective of this study is to obtain information optimal stocking density and morphology of spat during nursery culture. Randomized block design was applied with four stocking density treatments i.e. (A) 500, (B) 1000, (C) 1500, (D) 2000 individu (ind) collector-1,  conducted in triplcate The result showed that optimum density of P. maxima spat was 500 ind collector-1. The best of survival rate was found at density 500 ind collector-1 and the best of growth at treatment 500 ind collector-1 (36.50 x 33.37 mm). At the density of 500 ind collector1  shell morphology was normal, otherwise at high density (1,500 – 2,000 ind collector1) slower growth spat, shells shape is unnormal, for example  the shape of an elongated shell (DV> AP), or widened shape (DV

Analisis Perubahan Lahan Kawasan Laguna Segara Anakan Selama Periode Waktu (1978 – 2016) Menggunakan Satelit Landsat Multitemporal

Journal Omni-Akuatika Vol 12, No 3 (2016): OmniAkuatika special edition Kripik SCiFiMaS
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

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Abstract

Segara Anakan Lagoon (SAL) has the unique characteristics of the region with the high of natural resources biodiversity. The region of SAL is influences by natural factor (estuarine freshwater stream of Citanduy watershed and the high of sedimentation rate) and the variety of anthropogenic factor. The factors lead to the changes in land, because it triggers the decrease of the lagoon water bodies. The aim of the research is to know the changes of the region land use in SAL and its impact. Temporally spatial approach is required to evauate the influence of both factors. Spatial approach is done by using remote sensing method with Geographic Information System, with Multi-Temporal Landsat imagery data processing (the year of 1978, 1994, 2001, 2009, 2011 and 2016). It uses land classification technique (Supervised Classification). It is processed with ER Mapper 7.0 software and displayed with Arc GIS (Jpeg). The analysis result shows that there is 2.703,7 ha extensive shrinkage lagoon in 38 year (1978 - 2016) or there is 71.15 ha per year in land area increase in the last 38 years. It is supported with 4.741,36 ha residential land and 17.962,64 ha field land that cause the degredation of SAL region. The increase of SAL citizenary amount triggers the land conversion for the interest of the various anthropogenic activities. It is supported by the threat of natural factors of high sedimentation level that cause higher SAL pressure. In conclusion, it is needed evaluation and management strategies to overcome the changes of SAL land area by the local government and related parties.

Pengaruh Suhu dan Salinitas Terhadap Respon Fisiologi Larva Tiram Mutiara Pinctada maxima (Jameson)

JURNAL BIOLOGI INDONESIA Vol 6, No 1 (2009): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

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Abstract

ABSTRACTPENDAHULUANPinctada maxima adalah spesiesakuakultur yang mempunyai nilaiekonomi tinggi (Taylor et al. 1997). Dipasaran internasional, mutiara yangdiproduksi sering kali disebut dengannama “South Sea Pearl”. Indonesiatermasuk salah satu negara penghasilmutiara (South Sea Pearl) yang cukupdiskenal di pasaran dunia, sebagian besarproduksi South Sea Pearl yang dipasarkanberasal dari hasil budidaya (Anna2006). Produksi mutiara berbasisbudidaya merupakan aktivitas usaha yangmenguntungkan. Perkembangan usahabudidaya mutiara saat ini sudah mengarahpada kegiatan industri yang terintegrasi(Fassler 1995).The Effect of Temperature and Salinity to The Physiological Respons on The Larvae ofPinctada maxima (Jameson). Energy budget is one of the most sensitive tools available forindividual assessing environmental changes like temperature and salinity, and also prerequisitefor individual growth and survival. The aim of this study is to obtained information on energybudget on routine metabolism, in different levels of temperature and salinity, and to know thelevels of optimum temperature and salinity. The research was used randomized block design,with three replications. The result showed that optimal temperature and salinity on P. maximalarvae was 28 oC and 32 – 34 ‰ (BE and BF). Energy budget to routine metabolism increasedwas attributed to increased temperature and salinity due to the optimal, than would be decreasedwhen temperature and salinity increased. The highest of energy budged for routine metabolismat treatment BF. Stage I: energy budged between 6.73 – 7.35 C g wet weight-1 hour-1 (28.18 –30.74 J g wet weight-1 hour-1); Stages II: 5.85 – 5.95 C g wet weight-1 hour-1 (24.48 – 24.90 J g wetweight-1 hour-1); Stages III: 4.73 – 4.80 C g wet weight-1 hour-1 (15.07– 19.58 J g wet weight-1hour-1). The highest survival rate of larvae was by treatment BF, but has not higher significant(P e” 0.05) with BE, stage I: survival rate between 87.75 – 87.92 %; Stage II: 81.91 – 82.39 % andstage III: 76.72 – 77.26 %. The best of relative growth length of larvae by treatment BF and notsignificant (P e” 0.05) with BE, at stage I: 29.78 x 17.93 ?m – 30.57 x 18.43 ?m (AP x DV); stageII: 57.62 x 46.73 ?m – 58.13 x 47.33 ?m and stage III: 80.32 x 69.29 ?m – 80.88 x 69.62 ?m. Thequickest time of plantigrade stages have found by treatment BF (day 19.50) and hasn’tsignificant (P > 0.05) with BE (day 20.85).Keywords: Pinctada maxima, larvae, response; physiology, metabolism.Kata kunci: Pinctada maxima, larvae, respon, fisiology, metabolisme.

Pengaruh Kedalaman Terhadap Proses Pelapisan Inti Bulat Pada Kerang Air Tawar (Anodonta woodiana)

JURNAL BIOLOGI INDONESIA Vol 6, No 1 (2009): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

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Abstract

ABSTRACTThe Effect of Depth to Deposition Process on Round Nucleus of Fresh Water Mussel (Anodontawoodiana). One of the affecting factors to the quality of pearl culture is the thickness of pearldepositions (nacre). The objective of this study was to obtain information on best level ofdepth to culture of pearl, to get fast nacre deposition and high quality of pearl. The researchwas conducted for 9 months, in the freshwater pond, was 300 m2 wide and 1 m deep. Freshwaterpearl Anodonta woodiana, sized ranging from 12 – 15 cm were studied. Completely randomizeddesign was used with levels of deep treatment (A) 30 cm; (B) 60 cm and (C) 90 cm. The resultshowed that best thickness of pearl deposition by 90 cm deep (1.30 mm) but hasn’t biggestsignificant (P>0.05) to the deep of 60 cm (1.10 mm) and biggest significant (P< 0.05) to the deepof 30 cm (0.70 mm). The result of implantation was followed that 30, 60 and 90 cm deep were 11.9%; 12.2 %; 12.0 %, whereas survival rate was followed 79.2 %; 79 % and 78.7 %.Keywords: Freshwater mussel; Anodonta woodiana; effect; level of deepKata kunci: Kerang air tawar, Anodonta, woodiana, kedalaman laut

Status Gastropoda Pada Ekosistem Terumbu Karang Di Pulau Tidung Kepulauan Seribu

Jurnal Ilmu Kelautan Kepulauan Vol 1, No 2 (2018)
Publisher : Jurnal Ilmu Kelautan Kepulauan

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Abstract

Tujuan penelitian ini adalah untuk mengetahui status struktur komunitas gastropoda pada ekosistem terumbu karang di Pulau Tidung, Kepulauan Seribu. Pengamatan dilakukan pada 2 lokasi terumbu karang berdasarkan kondisi (life form) “rusak” (Stasiun 1: life form 0-24.9 %) dan kondisi “sedang” (Stasiun 2: life form + 36.05%). Pengamatan dilakukan pada daerah terumbu karang menggunakan metode LIT (Line Intercept Transect) sepanjang 50 m serta pengambilan sampel Gastropoda menggunakan metode transek kuadrat (1 x 1 m) pada kedalaman 90 cm. Garis transek (LIT) 50 m diletakan sejajar dengan garis pantai dengan jarak tiap garis transek adalah 25 m dengan 3 ulangan. Hasil pengamatan menunjukkan bahwa Gastropoda berasosiasi dengan terumbu karang, karena menggunakan terumbu karang sebagai habitat, tempat berlindung atau memakan jaringan/lendir karang. Jenis-jens yang ditemukan adalah Lambis lambis, Drupella sp., Cypraea tigris, Filifusus filamentosus, Cerithium asper, and Angaria nodosa. Kepadatan Gastropoda adalah 4-7 indv/m2 (Satasiun 1 > stasiun 2). Keragaman Gastropoda tergolong sedang (4.16 - 36.05%), dan nilai Dominasi (D = 0,69) oleh jenis Drupella sp.

APLIKASI AMONIUM HIDROKSIDA (NH4OH) SEBAGAI TRIGGER PEMIJAHAN TIRAM MUTIARA Pinctada maxima (JAMESON)

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Publisher : Fakultas Matematika dan ilmu pengetahuan Alam. Universitas Pakuan.

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Abstract

Penelitian ini dilakukan dengan tujuan untuk mengetahui dosis larutan NH4OH yang optimum dan posisi injeksi yang tepat sehingga dapat menjadi pemicu (trigger) pemijahan induk tiram mutiara Pinctada maxima (Jameson). Percobaan menggunakan Rancangan Acak Lengkap Faktorial (Faktorial-RAL), dengan tiga kali ulangan. Perlakuan yang diterapkan terdiri dari dua faktor yaitu (I) Posisi Injeksi dan (II) Dosis larutan NH4OH. Faktor I terdiri dari 4 taraf faktor yaitu posisi injeksi di bagian (A) Otot aduktor, (B) Pangkal kaki, (C) Gonad dan (D) Tidak diinjeksi (kontrol). Faktor II terdiri dari 3 taraf faktor yaitu dosis (E) 0,5 ml, (F) 1,0 ml dan (G) 1,5 ml. Hasil pengamatan menunjukkan bahwa dosis larutan NH4OH yang optimum untuk memicu (trigger) pemijahan induk tiram mutiara Pinctada maxima (Jameson) adalah 0,5-1,0 ml dengan posisi injeksi terbaik di bagian pangkal kaki. Kata kunci : Pearl oyster Pinctada maxima; amonium hidroksida (NH4OH); spawning