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Struktur Komunitas Lamun di Perairan Pesisir Manokwari Lefaan, Paskalina Th.; Setiadi, Dede; Djokosetiyanto, D.
Maspari Journal : Marine Science Research Vol 5, No 2 (2013): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

The study was done from July to October 2007 by line transect method, plots, and exploration survey. There were eight species found in this study were grouped into pioneer group (Cymodocea rotundata, Halodule pinifolia, Halodule uninervis, Halophila ovalis, Syringodium isoetifolium) and climax (Cymodocea serrulata, Enhalus acoroides, Thalassia hemprichii), with mixed vegetations. Density, covering percentage and biomass in Andai and Wosi were dominated by H. pinifolia; Rendani and Tj. Mangewa were dominated by T. hemprichii; and Briosi were dominated by C. rotundata and T. hemprichii. INP in Andai and Wosi (dominated by H. pinifolia) were 290.005 and 243.767, respectively; Rendani and Tj. Mangewa (dominated by T. hemprichii) were 101.725 and 135.139, respectively; and Briosi (dominated by C. rotundata) was 120.146. The highest ratio of above and below biomass was found in Andai (7.831) and the lowest was found in Briosi (2.103). Seagrass community in Rendani, Tj. Mangewa and Briosi had higher biodiversity index than Wosi and Andai (0.109 and 0.015). On the other hand, Rendani, Tj. Mangewa, and Briosi had lower dominance index (0.262, 0.421 and 0.338, respectively), compared to Andai (0.989) and Wosi (0.889). Level of similarity among seagrass community in Rendani, Briosi and Tj. Mangewa was categorized as very high (92.31 %), while Andai and Wosi was high (66.67 %).Keywords : seagrass community, pioneer, climax, mixed vegetation, ManokwariMaspari Journal, 2013, 5 (2), 69-81

Struktur Komunitas Lamun di Perairan Pesisir Manokwari Paskalina Th. Lefaan; Dede Setiadi; D. Djokosetiyanto
Maspari Journal : Marine Science Research Vol 5, No 2 (2013): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

The study was done from July to October 2007 by line transect method, plots, and exploration survey. There were eight species found in this study were grouped into pioneer group (Cymodocea rotundata, Halodule pinifolia, Halodule uninervis, Halophila ovalis, Syringodium isoetifolium) and climax (Cymodocea serrulata, Enhalus acoroides, Thalassia hemprichii), with mixed vegetations. Density, covering percentage and biomass in Andai and Wosi were dominated by H. pinifolia; Rendani and Tj. Mangewa were dominated by T. hemprichii; and Briosi were dominated by C. rotundata and T. hemprichii. INP in Andai and Wosi (dominated by H. pinifolia) were 290.005 and 243.767, respectively; Rendani and Tj. Mangewa (dominated by T. hemprichii) were 101.725 and 135.139, respectively; and Briosi (dominated by C. rotundata) was 120.146. The highest ratio of above and below biomass was found in Andai (7.831) and the lowest was found in Briosi (2.103). Seagrass community in Rendani, Tj. Mangewa and Briosi had higher biodiversity index than Wosi and Andai (0.109 and 0.015). On the other hand, Rendani, Tj. Mangewa, and Briosi had lower dominance index (0.262, 0.421 and 0.338, respectively), compared to Andai (0.989) and Wosi (0.889). Level of similarity among seagrass community in Rendani, Briosi and Tj. Mangewa was categorized as very high (92.31 %), while Andai and Wosi was high (66.67 %).Keywords : seagrass community, pioneer, climax, mixed vegetation, ManokwariMaspari Journal, 2013, 5 (2), 69-81

Struktur Vegetasi Riparia dan Implikasinya Terhadap Kondisi Habitat Ikan Pelangi Arfak, Melanotaenia Arfakensis di Sungai Nimbai, Manokwari Papua Barat Paskalina Th. Lefaan; Hans Fence Zakeus Peday; Simon Petrus Oktovianus Leatemia; Luky Sembel; Emmanuel Manangkalangi
Samakia : Jurnal Ilmu Perikanan Vol 10 No 1 (2019): Samakia: Jurnal Ilmu Perikanan
Publisher : Faculty of Science and Technology University Ibrahimy

Riparian vegetation has an important role in maintaining water stability, one of which is the river. This study aims to describe the structure of riparian vegetation so that its implications can be seen for the conditions of rainbow arfak habitat on the Nimbai River. The study was conducted in three forest types, namely primary riparia forest, secondary riparia forest and open riparia forest. Sample collection of riparian vegetation was carried out by purposive sampling using sample plots. Plots measuring 2 m x 2 m are used to sample seedling and understorey growth, plots measuring 5 m x 5 m for growth at the stake level, while plots measuring 10 m x 10 m and 20 m x 20 m, for growth of pole and tree levels respectively. The identification results obtained a total of 35 species of understorey and 51 tree-level plants in all three types of riparian forests. Based on the analysis of vegetation structure, it is known that the condition of primary riparia forest and secondary riparian forest still relatively supports the life of arfak rainbow fish compared to open riparian forest. Higher tree level density associated with canopy cover which has implications for the temperature of the water to be colder and less fluctuating, input larger litter into the food chain in the river, and hold suspended particles into the river. Also, the function of riparian vegetation in spawning activities, substrate attaching eggs and nursery habitat for arfak rainbow fish larvae. The results of this study indicate the importance of riparian vegetation structure on the condition of rainbow arfak fish habitat. An understanding of the structure of vegetation is also a basic information for efforts to rehabilitate this endemic fish habitat to maintain the existence of a natural population.

The potential of arfak rainbowfish Melanotaenia arfakensis Allen 1990 as biocontrol of mosquito larvae Emmanuel Manangkalangi; Simon P. O. Leatemia; Paskalina Th. Lefaan; Hans F. Z. Peday; Luky Sembel
Jurnal Iktiologi Indonesia Vol 15 No 2 (2015): June 2015
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v15i2.65

Research on the potency of arfak rainbowfish as a biocontrol of mosquito larvae was held in Fisheries Laboratory FPPIK, the Universitas Negeri Papua from August to November 2013. The aim of this study was to describe the potency of arfak rainbowfish as a biocontrol of mosquito larvae and compared it with two introduction fish species, Gambusia affinis and Aplocehilus panchax. All of the three species collected from Prafi River, Manokwari were acclimatized for one month in the laboratory. Male individuals were selected and grouped into four size classes according to body length. Three individuals were chosen to represent each species in each size class. Each individual was treated with mosquito larvae (stage IV instars and pupae) of 100 individuals separately, as well as 50 individual instars and pupae simultaneously. The level of predation and selectivity of both prey types was recorded, within 15-minute observation period. All of the three species showed levels of predation on instars and pupae increased with increasing body size. The level of predation on instars was higher than the pupae when the two treatment preys were treated separately. Furthermore, the predation level of arfak rainbowfish on instars and pupae higher than the other two fish species in all size classes, and also the relative degree of selectivity did not differ between the two types of prey in each size class. These results as well as other criteria, indicates M. arfakensis has potential as a biocontrol agent to mosquito larvae. Abstrak Penelitian potensi ikan pelangi arfak sebagai biokontrol larva nyamuk dilaksanakan di laboratorium Laboratorium Perikanan FPPIK Universitas Negeri Papua pada bulan Agustus sampai November 2013. Tujuan penelitian ini untuk mendeskripsikan potensi ikan pelangi arfak sebagai biokontrol larva nyamuk dan membandingkannya dengan dua spesies ikan introduksi Gambusia affinis dan Aplocheilus panchax. Ketiga spesies ini dikoleksi dari daerah aliran Sungai Prafi, Manokwari yang diaklimatisasi selama satu bulan di laboratorium. Dipilih individu jantan dan dikelompokkan berda-sarkan panjang tubuh ke dalam empat kelas ukuran. Tiga individu dipilih mewakili setiap spesies dan kelas ukuran. Setiap individu diberi perlakuan dengan larva nyamuk (tahap instar IV dan pupa) sebanyak 100 individu secara terpisah, serta 50 individu instar dan pupa secara bersamaan. Tingkat pemangsaan dan pilihan kedua tipe mangsa ini dicatat, waktu pengamatan 15 menit. Ketiga spesies menunjukkan tingkat pemangsaan terhadap instar dan pupa semakin meningkat dengan sema-kin besarnya ukuran tubuh, tingkat pemangsaan terhadap instar lebih tinggi dibandingkan pupa pada perlakuan pemberian kedua mangsa secara terpisah. Selanjutnya, tingkat pemangsaan ikan pelangi arfak terhadap instar dan pupa lebih tinggi dibandingkan kedua spesies ikan lainnya pada semua kelas ukuran, serta tingkat pilihan yang relatif tidak berbeda di antara kedua tipe mangsa pada setiap kelas ukuran. Hasil penelitian ini dan juga kriteria lainnya, menunjukkan bahwa ikan pelangi arfak memiliki potensi sebagai agen biokontrol terhadap larva nyamuk.

Kondisi habitat ikan pelangi arfak, Melanotaenia arfakensis Allen, 1990 di Sungai Nimbai, Prafi Manokwari [Habitat condition of arfak rainbowfish, Melanotaenia arfakensis Allen, 1990 at Nimbai Streams, Prafi Manokwari] Emmanuel Manangkalangi; Simon P. O. Leatemia; Paskalina Th. Lefaan; Hans F. Z. Peday; Luky Sembel
Jurnal Iktiologi Indonesia Vol 14 No 1 (2014): Februari 2014
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v14i1.93

This research aimed to describe habitat condition of endemic arfak rainbowfish, Melanotaenia arfakensis at Sungai Nimbai on June-July and September-October 2012. The study site consisted of seven sampling stations for organisms and environmental qualities, from upstream to downstream segment, and each of these stations divided into two habitat types, ie. slow littoral and run areas. The parameters of habitat quality were measured and analysed such as current water, temperature, dissolved oxygen, pH, grease and oil concentration, riparian vegetation, macroinvertebrates composition and abundance, also fish composition and distribution. Riparian vegetation sampling was done at stream sides using 4 m2 plot for seedling and 400 m2 for sapling, pole, and tree categories. Macroinvertebrate and fish at two habitat types were collected using surber of 0.0625 m2 and hand net. The result showed that arfak rainbow-fish were only found at upstream segment. The presence of the species was related to physical and chemical parameters condition that supporting their life, also related to the availability of spawning and nursering habitat for larvae, and the aquatic insects as their food. The absence of the fish at downstream segment, maybe due to the degradation of their habitat condition that related to decreasing riparian vegetation coverage and organic waste flow to stream system, and also the presence of alien fish. The study showed decreasing of the quality and suitable habitat areal for this endemic species decrease, therefore it is need to conserve the natural habitat as the effort to maintain the sustainability of this species populations. Abstrak Penelitian ini bertujuan untuk mendeskripsikan kondisi habitat ikan pelangi arfak, Melanotaenia arfakensis yang endemik di Sungai Nimbai pada bulan Juni-Juli dan September-Oktober 2012. Pada lokasi ini ditetapkan tujuh stasiun pengambilan contoh organisme dan parameter lingkungan dari segmen di bagian hulu sampai ke arah hilir masing-masing dengan dua tipe habitat, yaitu tepi sungai beraliran lambat dan daerah beraliran deras. Parameter kualitas habitat yang diukur meliputi kecepatan aliran air, suhu air, gas oksigen terlarut, pH, konsentrasi minyak dan lemak, kondisi vegetasi riparian, kom-posisi dan kepadatan makroavertebrata air, serta komposisi dan penyebaran spesies ikan. Pengumpulan contoh vegetasi riparian tepi sungai menggunakan petak contoh berukuran 4 m2 untuk tingkat semai dan 400 m2 untuk tingkat pancang, tiang, dan pohon. Pengumpulan contoh makroavertebrata dan ikan kedua tipe habitat menggunakan surber berukuran 0,0625 m2 dan hand net. Hasil penelitian ini memperlihatkan ikan pelangi arfak hanya ditemukan pada segmen sungai di bagian hu-lu. Keberadaan spesies ini berkaitan dengan kondisi parameter fisik-kimiawi perairan yang mendukung kehidupan-nya, tersedianya habitat pemijahan dan perlindungan bagi larva, dan tersedianya makanan berupa insekta air. Keti-dak hadiran ikan ini pada segmen sungai di bagian ke arah hilir disebabkan oleh menurunnya kualitas habitat yang berkaitan dengan berkurangnya tutupan vegetasi riparian dan masuknya limbah organik ke dalam sistem sungai, serta kebera-daan ikan asing. Hasil ini memperlihatkan terjadinya penurunan kualitas dan luasan habitat yang layak bagi spesies ikan ende-mik ini. Oleh karena itu perlu adanya upaya pelestariannya melalui konservasi habitat alami agar populasinya tetap lestari.

Komunitas Gastropoda pada Padang Lamun Perairan Pantai Manokwari Adinda Rindiani Putri; Paskalina Th Lefaan; Rina Anita Mogea
Jurnal Sumberdaya Akuatik Indopasifik Vol 5 No 1 (2021): Februari
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2021.Vol.5.No.1.120

This study was purposed to identify the spesies and the community structure of gastropods in Manokwari shore. The sampling used transect method at two observation stations, i.e Briosi BLK shore and Rendani shore. Each station has three transect lines parallel to the sea, each of which had 10 quadrats. These transects were placed on a seagrass beds. Data analysis was carried out including diversity index (H’), evenness index (E), dominance (D) and density of gastropods. The results showed that the water quality at both sampling locations could support the growth of gastropods. The species composition of the gastropods in two sampling locations consisted of 20 families, 28 genera, and 82 species. The diversity index (H’) in Briosi BLK shore was 3.14; evenness index (E) = 0,92; dominance (D) = 0,06 and density of gastropods 23,70 ind.m-2. The diversity index (H’) of gastropods in Rendani shore was 3,79 ; equitability index (E) = 0,90; dominance (D) = 0,03 and density of gastropods 83,33 ind.m-2 . Gastropods found were Strombus (Canarium) urceus urceus, Conus (Virroconus) coronatus, Chicoreus sp.2, Vexillum (Costellaria) mirabile, Polinices tumidus, and Imbricaria conularis. Based on the diversity index, the two stations are in a high diversity index so that there is no dominant species in the two locations, The gastropod density in Rendani shore was higher than that in Briosi BLK, it is suspected that the substrate is suitable and the amount of organic matter and then, far from the gathering place to support the growth of gastropods.

Aktivitas Pemijahan, Perkembangan Awal, dan Pertumbuhan Larva Ikan Pelangi Arfak dalam Kondisi Laboratorium: Studi Pendahuluan untuk Penangkarannya Emmanuel Manangkalangi; Ida Lapadi; Paskalina Theresia Lefaan; M. Fadjar Rahardjo; Renny K. Hadiaty; Sigid Hariyadi; Charles P. H. Simanjuntak
Jurnal Sumberdaya Akuatik Indopasifik Vol 5 No 3 (2021): Agustus
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2021.Vol.5.No.3.165

Comprehensive information regarding the reproduction, early development, and growth of larvae is very important in the efforts of captive breeding and reintroduction of endangered fish species. One of the species that is starting to be threatened is the Arfak rainbowfish, Melanotaenia arfakensis which is already in the vulnerable category and its information is still relatively limited. Therefore, this study was conducted to describe the spawning activity, early development, and growth of the larvae of this rainbow fish species under laboratory conditions. Experiments on a laboratory scale were carried out in March-September 2017. The fish used came from the Nimbai Stream. A total of three pairs of individual males and females ranging in size from 46.5 to 60.1 mm were selected for treatment. However, only one pair was successfully observed spawning activity completely. Spawning takes place between morning and noon in three spawning periods. In each period, spawning lasts between 8 and 11 days. Between spawning periods takes 14 to 22 days. After fertilization, the eggs are attached with filaments to the spawning substrate and placed at a depth of 7.3-24.3 cm from the surface of the water. One group of eggs spawned consists of 78-116 eggs with a diameter range between 1.05 and 136 mm. The eggs hatch in a period of 4 to 10 days. The body length of the newly hatched larvae ranges from 4.13-4.40 mm and will reach a size of 7.85 mm with a survival rate of 48.1% after 41 days. The results of this study found several advantages from the characteristics of spawning and growth in the early stages that are useful for captive breeding efforts and reintroduction of this rainbowfish to their natural habitat. Thus, its population in the Prafi River system can be maintained.

KESTABILAN HABITAT LAMUN DITINJAU DARI KOMPOSISI DAN KEPADATAN JENIS Paskalina Th. Lefaan
Jurnal Natural Vol. 8 No. 1 (2009): Jurnal Natural
Publisher : FMIPA Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar

Seagrasses habitats have both physical and ecological functions that support adjacent waters qualities and its dwelling organisms. There are varies of pressure on seagrass environmental, especially due to people activities that could decrease its function and habitat stabilities. The study aimed to determine about seagrass habitat stabilities from its species composition and/or densities. Line transect-plots and exploration methods were used in five locations of Manokwari coastal waters, that were, Andai, Rendani, Wosi, Briosi, and Tanjung Manggewa. There are five pioneer species (Cymodocea rotundata, Halodule pinifolia, H. uninervis, Syringodium isoetifolium, Halophila ovalis) and 3 climax species (Cymodocea serrulata, Enhalus acoroides, Thalassia hemprichii). The pioneer only found in Andai and Wosi, however both pioneer and climax encountered in three other locations. In Rendani and Tanjung Manggewa higher density of climax species (T. hemprichii) were 617.7 and 828.0 stands m-2, respectively, although in Briosi the higher pioneer (C. rotundata) of 570.7 stands m-2. These conditions showed that seagrass habitat in Rendani and Tanjung Manggewa are more stable compared to Briosi, as well as Andai and Wosi. It concluded that pioneer species found in newly formed habitat or disturbed, on the other hand, climax in more stable habitat.

PERTUMBUHAN, UMUR, DAN DIMORFISME SEKSUAL IKAN PELANGI ARFAK, Melanotaenia arfakensis Allen, 1990 DI SISTEM SUNGAI PRAFI, MANOKWARI, PAPUA BARAT Emmanuel Manangkalangi; Simon P.O. Leatemia; Luky Sembel; Paskalina T. Lefaan; Ridwan Sala; M.F. Rahardjo
VOGELKOP: Jurnal Biologi Vol 1, No 2 (2018)
Publisher : Jurusan Biologi, FMIPA, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/vogelkopjbio.v1i2.52

ABSTRACTArfak rainbow fish, Melanotaenia arfakensis is an endemic fish on several river systems in the northeastern part of the Vogelkop peninsula. This study aims to describe the growth, age at first maturity, and sexual dimorphism of this endemic fish on the Nimbai Stream and the Aimasi Stream, the Prafi River system. The fish were caught using handnet, then were measured their standard length and individual weight. Data were analyzed to estimated growth patterns, von Bertalanffy's growth rate, age at first maturity and sexual dimorphism characteristics. The results showed that male growth patterns varied, with a tendency of the increase in body length faster than that of body weight (negative allometric patterns) with b values ranging from 2.886 to 3.132. On the other hand, the female individuals had positive allometric patterns (b values ranged from 3.062 to 3.378). The growth rate (K) of male body length was faster (0.165-0.174) than that of female individuals (0.159-0.163). Male individuals reached the first maturity condition earlier (at age of 1.83-2.18 years) than female individuals (at age of 2.49-2.64 years). Sexual characteristics between the sexes are related to body height starting to appear when fish are of a standard length of larger than 18.22 mm or when male fish begin to approach the time of the first sexual maturity. Understanding of growth, age, and the characteristics of the sexual dimorphism of endemic fish has an important meaning in monitoring population conditions and for conservation efforts in their natural habitat.

Variasi Spesies Pisang dan Pemanfaatannya di Dataran Rendah Kabupaten Manokwari Johanis Kilmaskossu; Maria J. Sadsoeitoeboen; Fajar R. D. N. Sianipar; Paskalina Th. Lefaan; Agatha C. Maturbongs; Simeon A. Putra; Nelson P. Weyai; Sisilia N. Mudarehi
Igya ser hanjop: Jurnal Pembangunan Berkelanjutan Vol 4 No 1 (2022)
Publisher : Badan Penelitian dan Pengembangan Provinsi Papua Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47039/ish.4.2022.31-41

Pisang merupakan tumbuhan herba berbatang semu yang mempunyaibanyak manfaat bagi manusia dalam kehidupan sehari-hari. Di Kabupaten Manokwari informasi tentang jenis kultivar dan pemanfaatan pisang belum banyak dilaporkan. Penelitian ini bertujuan untuk mendata varitas pisang dan pemanfaatanya di daerah dataran rendah Kabupaten Manokwari. Pengambilan sampel dilakukan menggunakan metode deskritif dengan teknik survei dan wawancara dengan pemilik kebun dan masyarakat lokal pada 36 desa di Kabupaten Manokwari. Pengumpulan data tentang pemanfaatan dilakukan di pasar, kios dan penjual makanan yang memanfaatkan pisang. Hasil identifikasi menunjukkan terdapat 27 kultivar pisang yang tergolong dalam jenis Musa acuminata, Musa balbisiana, Musa fe’i, Musa x paradisiaca dan 3 jenis pisang liar (Musa lolodensis, Musa acuminata ssp. Malaccensis dan Musa schizocarpa). 27 kultivar pisang dan 1 jenis pisang liar dimanfaatkan sebagai bahan pangan (tanpa penglohan/makan segar dan yang perlu diolah sebelum dimakan), pembungkus makanan, bahan obat dan upacara adat.

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