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Kajian Aspek Reproduksi Ikan Lais Ompok hypophthalmus di Sungai Kampar, Kecamatan Langgam, Kabupaten Pelalawan, Provinsi Riau Elvyra, Roza; Solihin, Dedy Duryadi; Affandi, Ridwan; Junior, Zairin
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (106.146 KB) | DOI: 10.31258/jnat.12.2.117-123

Abstract

Lais fish of Ompok hypophthalmus is one of high economic fish in Kampar river. It should be protected fromdecreasing of it population estimated due to decreasing of habitat quality and increasing of exploitation. Theobjectives of the research are to study reproduction biology of lais fish as the basic data for conservation. Thisresearch was conducted from January 2007 to January 2008. The results of O. hypophthalmus reproductionaspect show that the smallest female of maturity is 22,9 cm and male is 22,6 cm; the spawning season onSeptember to November; O. hypophthalmus is more appropriate spawning location to oxbow lake that closerelation with tributary; the spawning pattern indicated total spawner fish; the fecundity ranges from 3111 to 11164eggs and the egg diameter ranges 0,41-1,13 mm.
PERUBAHAN STRUKTUR HISTOLOGIS INSANG DAN HATI IKAN NILA (Oreochromis niloticus Linnaeus 1758) YANG TERPAPAR MERKURI Zulfahmi, Ilham; Affandi, Ridwan; Batu, Djamar T.F. Lumban
Jurnal Edukasi dan Sains Biologi Vol 4, No 1 (2015): Jurnal Edukasi dan Sains Biologi
Publisher : Universitas Almuslim

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Abstract

Penelitian ini bertujuan untuk mengkaji perubahan struktur histologis organ insang, hati dan ginjal ikan nila akibat dari paparan merkuri. Penelitian dilakukan dari bulan Februari hingga Juni 2013. Ikan nila berukuran panjang 11-13 cm dengan bobot rata-rata 20 gram dipaparkan pada konsentrasi sub kronik merkuri klorida (0,164 mgL-1) selama 56 hari. Pembuatan preparat histologis hati dan dilakukan dengan metode histoteknik menggunakan pewarnaan Haemotoxylin dan Eosin. Hasil penelitian menunjukkan adanya pengaruh negatif pada hati dan ginjal ikan nila akibat dari paparan merkuri. Paparan merkuri pada organ insang menyebabkan terjadinya perubahan struktur histologis berupa perbesaran sel organ (hypertrophy), penambahan jumlah sel (hyperplasia) pembengkokan lamela sekunder (curling of secondary lamella), penghimpitan lamella sekunder (fusion in secondary lamella)  dan kematian sel  (neukrosis). Perubahan histologis pada organ hati berupa perbesaran sel organ (hypertrophy), penambahan jumlah sel (hyperplasia), penciutan inti  sel (shrinkage of hepatocytes), pendarahan (hemorage), dan kematian sel (neukrosis).Kata kunci: merkuri klorida, histologis, hypertrophy, hyperplasia, neukrosis.
Perkembangan Gonad dan Musim Pemijahan Kerang Sepetang (Pharella acutidens) di Ekosistem Mangrove Dumai, Riau ., Efriyeldi; Bengen, Dietriech G; Affandi, Ridwan
Maspari Journal : Marine Science Research Vol 4, No 2 (2012): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.707 KB) | DOI: 10.36706/maspari.v4i2.1380

Abstract

ABSTRACTThis research aims to study the gonadal development and spawning seasonof “sepetang” clam (Pharella acutidens).The study was carried out  over 12 month period from November 2010 to October 2011 at  Dumai mangrove ecosystem.“Sepetang” clam samples were obtained from the Dumai mangrove ecosystem monthly at three station. The clam collected from plot 1 x 1 m2on quadrat  transect. Reproductive aspects such as sex ratio, gonadal development,gonadosomatic index (GSI), and oocytes diameter were studied.The result showed that “sepetang” clam can be sexed at the size more than 35 mm. No specimens hermaphroditism was observed. The male to female ratio was  1 : 1.12. Histological analysis indicated that P. acutidenshadfour distinguishable gonad development in male and female clam, namely early active, late active, ripe and partially spawned. Mean  oocyte diameter did not showed pattern monthly, except onMay to July, mean oocyte diameter small. Based on gonadal development, GSI and mean oocytes diameter, “sepetang” clam spawning continued throughout the year   and  peak spawning season my be on May-July. Keywords : “sepetang” clam, histological, sex ratio, gonadosomatic index ABSTRAKPenelitian yang bertujuan mengkaji perkembangan gonad dan musim pemijahan kerang sepetang (P. acutidens) telah dilakukan selama 12 bulan, mulai bulan November 2010 sampai Oktober 2011 di ekosistem mangrove Dumai.  Kerang sepetang diperoleh dari ekosistem  mangrove Dumai Barat pada tiga stasiun setiap bulan. Kerang dikumpulkan dari plot 1 x 1 m2 pada transek kuadrat. Pada penelitian ini dikaji nisbah kelamin, tahap perkembangan gonad, indeks kematangan gonad,  dan diameter oosit. Hasil penelitian menunjukkan bahwa kerang sepetang bersifat dioecious. Empat tahapan kematangan gonad ditemukan pada penelitian ini, meliputi aktif awal, aktif akhir, matang dan dikeluarkan sebagian. Rata-rata diameter oosit tidak menunjukkan adanya pola setiap bulan, namun pada bulan Mei-Juli diameter oosit lebih kecil. Berdasarkan tahap perkembangan gonad, indeks kematangan gonad, dan diameter oosit kerang sepetang memijah sepanjang tahun dan puncak pemijahan pada bulan Mei.Kata Kunci : kerang sepetang, histologi, nisbah kelamin, indeks kematangan gonad
DISTRIBUSI SPASIAL DAN TEMPORAL IKAN PEPIJA Harpadon nehereus (Hamilton, 1822) DI PERAIRAN PULAU TARAKAN, KALIMANTAN UTARA Laga, Asbar; Affandi, Ridwan; Muchsin, Ismudi; Kamal, Muhammad Mukhlis
ZOO INDONESIA Vol 24, No 1 (2015): Juli 2015
Publisher : Masyarakat Zoologi Indonesia

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Abstract

Ikan pepija merupakan ikan demersal dengan penyebaran di perairan estuaria dan laut dangkal. Penelitian ini bertujuan untuk mengkaji distribusi spasial dan temporal ikan pepija di perairan P. Tarakan. Penelitian dilakukan dari Februari 2013 sampai dengan Februari 2014. Penangkapan ikan dilakukan dengan menggunakan pukat hela (trawl) dengan ukuran panjang sayap 7 meter dengan besar mata jaring pada sayap, badan dan kantong masing-masing berukuran 2,2 dan 1 inch. Pengoperasian jaring trawl pada masing-masing lokasi stasiun dilakukan “zig zag” dengan 2 kali masa penarikan pukat hela (towing) selama 30 menit. Ikan yang tertangkap ditimbang seluruhnya. Hasil tangkapan bervariasi saat waktu pengamatan dan antara satu stasiun dengan stasiun lainnya. Laju tangkap tertinggi pada bulan Desember dan Januari sebesar 75.56 dan 77.37 kg/jam dan terendah pada bulan April sebesar 7.41 kg/jam. Ikan pepija melakukan migrasi harian dari Tanjung Simaya (tanggal 7 kalender Hijriah), tanggal 8 di perairan Tanjung Selayu, tanggal 9 antara perairan Tanjung Selayu dan Tanjung Juata, dan tanggal 10 pada penanggalan Hijriah di perairan Tanjung Juata. Berdasarkan data tangkapan tersebut terungkap bahwa distribusi ikan pepija di perairan Pulau Tarakan berkaitan dengan pasang surut, ikan ini hanya ditemukan pada saat pasang perbani pada tanggal 7, 8, 9 dan 10 bulan Hijriah.
KOMUNITAS IKAN DI PERAIRAN SUNGAI SERAYU YANG TERFRAGMENTASI WADUK DI WILAYAH KABUPATEN BANJARNEGARA Haryono, Haryono; Rahardjo, M. F.; ., Mulyadi; Affandi, Ridwan
ZOO INDONESIA Vol 23, No 1 (2014): Juli 2014
Publisher : Masyarakat Zoologi Indonesia

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Abstract

Serayu termasuk sungai besar yang alirannya melewati lima Kabupaten di Jawa Tengah dan terfragmentasi oleh waduk di wilayah Banjarnegara. Informasi mengenai biodiversitas ikan di sungai ini masih sedikit. Penelitian ini bertujuan untuk mengungkap keanekaragaman jenis ikan, potensi, status jenis, dan upaya konservasinya. Penelitian menggunakan metode survei yang dilakukan di tiga zona (di bawah waduk, kawasan waduk, dan di atas waduk). Hasil penelitian ditemukan 22 spesies yang tergolong ke dalam 13 famili, sebagian besar merupakan ikan konsumsi (54,55%), status jenisnya sebagian besar bersifat umum atau mudah ditemukan (81,82%) dan introduksi (18,18%). Ancaman terhadap kelestarian sumber daya ikan di wilayah ini beragam dan diperlukan upaya konservasinya.
Pengaruh Suhu dan Salinitas Terhadap Respon Fisiologi Larva Tiram Mutiara Pinctada maxima (Jameson) Winanto, Tjahjo; Soedharma, Dedi; Affandi, Ridwan; Sanusi, Harpasis S.
JURNAL BIOLOGI INDONESIA Vol 6, No 1 (2009): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.755 KB) | DOI: 10.14203/jbi.v6i1.3171

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.
Pola Pertumbuhan dan Nisbah Kelamin Ikan Brek (Barbonymus balleroides Vall. 1842) pada Habitat yang Terfragmentasi di Sungai Serayu Jawa Tengah ., Haryono; Rahardjo, MF.; ., Mulyadi; Affandi, Ridwan
JURNAL BIOLOGI INDONESIA Vol 10, No 2 (2014): Jurnal Biologi Indonesia
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1987.405 KB) | DOI: 10.14203/jbi.v10i2.2108

Abstract

A total of 2466 fish were sampled from Serayu River in Banjarnegara, Central Java. The aims of study are to assessthe relationships among length weight, growth, condition factors and sex ratio of of the brek fish (Barbonymusballeroides) with fragmented habitat. The study started from June 2012 to May 2013 using survey mehods. Thestudy sites consist of six stations which were into three segments based on the reservoir position, i.e lower segment(St.1-St.2), middle segment (St.3-St.4), and upper segment (St.5-St.6). The results show length weight relationshipwere W= W= 7.10 -7*L3.084 (r2= 0.97) for all specimens, W = 8.10-6 *L3.061 (r2= 0.96) for males, and W= 7.10-7*L3.089(r2= 0.98) for females; growth pattern were allometric over all condition factor were almost the both males andfemales, i.e. 1.0234 and 1.0275 respectively. Based on the segment, males were the highest in March at the middlesegment i.e 1.2105 (n= 49) and the lowest at was the upper segment i.e. 0.8952 (n = 29). In females, the highestwas also in March at the upper i.e. 1.1895 (n = 19) and the lowest in April at the lower segment i.e. 0.9478 (n=35); sex ratio consists of 1073 males and 1393 females or 1: 1.29.Key words: growth, length-weight relationship, condition factor, and sex ratio
Karakteristik Morfologi dan Habitat Ikan Brek (Barbonymus balleroides Val. 1842) di Sungai Serayu Jawa Tengah Hayono, Hayono; Rahadjo, M F; Affandi, Ridwan; Mulyadi, Mulyadi
JURNAL BIOLOGI INDONESIA Vol 13, No 2 (2017): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v13i2.3396

Abstract

ABSTRACTBrek is a consumption fish belong to barbs group that widely distributed, one of them is in Serayu river. The aims of this study was to reveal the characteristics of meristic, morphometric, and habitat of the species. The study was conducted on the Serayu river especially in Banjarnegara, Central Java Province. Sampling was conducted on May 2012 to June 2013. The area of study was divided into three zones and the zones was categorized based on Reservoirs at Mrica area these are upper zone, reservoir zone, and below the reservoir zone. Fishing gear used are cast net, elektorfishing, and gill nets. Samples of fish were caught preserved in 4-10% formalin solution and then observed in the laboratory. Morphometric characters observed were 24 characters. The results were standardized to standard length, then analyzed with discriminant methods. The structure of the scales and number of ridges on the back of the last dorsal fin spines also observed. The results meristic characters are 4.8 dorsal fin, 3.5 anal fin, 1.14-16 pectoral fin, and predorsal 10-13 scales, also there were no spots on the caudal peduncle. The results of discriminant analysis showed known five characters distinguishing three species near 100%. The habitats have rocky bottom, rapid current, and divide into two groups.Keywords: barb fish, meristic, morphometric, Serayu river
PERUBAHAN STRUKTUR HISTOLOGIS INSANG DAN HATI IKAN NILA (Oreochromis niloticus Linnaeus 1758) YANG TERPAPAR MERKURI Zulfahmi, Ilham; Affandi, Ridwan; Batu, Djamar T.F. Lumban
Jurnal Edukasi dan Sains Biologi Vol 4, No 1 (2015): Jurnal Edukasi dan Sains Biologi
Publisher : Universitas Almuslim

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Abstract

POLA PERTUMBUHAN DAN NISBAH KELAMIN IKAN BREK (BARBONYMUS BALLEROIDES VALL. 1842) PADA HABITAT YANG TERFRAGMENTASI DI SUNGAI SERAYU JAWA TENGAH ., Haryono; Rahardjo, MF.; ., Mulyadi; Affandi, Ridwan
JURNAL BIOLOGI INDONESIA Vol 10, No 2 (2014): Jurnal Biologi Indonesia
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v10i2.2108

Abstract

A total of 2466 fish were sampled from Serayu River in Banjarnegara, Central Java. The aims of study are to assessthe relationships among length weight, growth, condition factors and sex ratio of of the brek fish (Barbonymusballeroides) with fragmented habitat. The study started from June 2012 to May 2013 using survey mehods. Thestudy sites consist of six stations which were into three segments based on the reservoir position, i.e lower segment(St.1-St.2), middle segment (St.3-St.4), and upper segment (St.5-St.6). The results show length weight relationshipwere W= W= 7.10 -7*L3.084 (r2= 0.97) for all specimens, W = 8.10-6 *L3.061 (r2= 0.96) for males, and W= 7.10-7*L3.089(r2= 0.98) for females; growth pattern were allometric over all condition factor were almost the both males andfemales, i.e. 1.0234 and 1.0275 respectively. Based on the segment, males were the highest in March at the middlesegment i.e 1.2105 (n= 49) and the lowest at was the upper segment i.e. 0.8952 (n = 29). In females, the highestwas also in March at the upper i.e. 1.1895 (n = 19) and the lowest in April at the lower segment i.e. 0.9478 (n=35); sex ratio consists of 1073 males and 1393 females or 1: 1.29.Key words: growth, length-weight relationship, condition factor, and sex ratio