Papers by Emmanuel Manangkalangi
JURNAL ENGGANO
Pasar Sanggeng, pasar Wosi, pelabuhan, PLTD (Pembangkit Listrik Tenaga Disel), perhotelan dan pem... more Pasar Sanggeng, pasar Wosi, pelabuhan, PLTD (Pembangkit Listrik Tenaga Disel), perhotelan dan pemukiman penduduk yang terletak di pesisir Teluk Doreri Kota Manokwari, menjadi salah satu pusat aktivitas yang melayani kebutuhan masyarakat. Akibat adanya aktivitas yang tinggi tersebut menyebabkan pembungan sampah-sampah organik dan anorganik tidak terawasi atau terkontrol dengan baik. Kondisi ini berlangsung secara terus menerus setiap hari sehingga dapat menyebabkan terjadi degradasi kualitas perairan. Tujuan Penelitian yaitu untuk mengetahui status kualitas perairan di Teluk Doreri Kabupaten Manokwari. Penelitian dilakukan dari bulan Agustus tahun 2016 bertempat di Laboratorium Kelautan, Ilmu Kelautan Unipa dan Laboratorium Prolink IPB Bogor. Lokasi pengambilan sampel air di sekitar perairan Sawaibu, Wosi, Andai, Sowi dan Perairan Maruni. Data parameter yang diambil melalui pengukuran langsung dan tidak langsung. Pengukuran secara langsung meliputi parameter salinitas, pH, suhu dan o...
![Research paper thumbnail of Preferensi makanan ikan pelangi arfak, Melanotaenia arfakensis Allen, 1990 di Sungai Nimbai dan Sungai Aimasi, Manokwari [Food preference of arfak rainbowfish, Melanotaenia arfakensis Allen, 1990 in Nimbai and Aimasi Streams, Manokwari]](https://attachments.academia-assets.com/76648559/thumbnails/1.jpg)
The study of food preference of arfak rainbowfish (Melanotaenia arfakensis) in Nimbai and Aimasi ... more The study of food preference of arfak rainbowfish (Melanotaenia arfakensis) in Nimbai and Aimasi streams, and Prafi river system were conducted from June to December 2007. Sampling was carried out monthly for seven months in four different habitat types, i.e. slow littoral, still littoral, pool, and run areas. Results showed that abundance of plankton and macroinvertebrate were found both in slow littoral and medium littoral, especially during low flow period (June to October). Macroinvertebrate that found naturally abundance are insect groups. Arfak rainbowfish are insectivorous, with preponderance index of stomach content during these periods are dominated by insect groups, i.e. Diptera, Ephemero-ptera, Coleoptera, and Trichoptera, so this species categorized as insectivorous. Also, electivity index showed a trend of food specification that naturally abundance. In order to maintain the population of arfak rainbowfish, conservation of their natural habitats is needed, especially ri...
![Research paper thumbnail of MUSIM PEMIJAHAN IKAN PELANGI ARFAK (Melanotaenia arfakensis ALLEN) DI SUNGAI NIMBAI DAN SUNGAI AIMASI, MANOKWARI [Spawning Season of Arfak Rainbowfish (Melanotaenia arfakensis Allen) in Nimbai and Aimasi Streams, Manokwari]](https://attachments.academia-assets.com/76648403/thumbnails/1.jpg)
The study was aimed to describe the spawning season of arfak rainbowfish (Melanotaenia arfakensis... more The study was aimed to describe the spawning season of arfak rainbowfish (Melanotaenia arfakensis) in Nimbai and Aimasi streams, both are located in Prafi river system. Sampling was conducted from June to December 2007 and carried out monthly in four different habitat types using hand net. A total of 752 individual specimens were collected and consisted of five developmental stages, namely egg, larvae, juvenile, young and adult. There was no different proportion in both sexes, either habitat type or time. This species has relatively low fecund, producing approximately 23-1,351 eggs with relatively large diameter (0.5-1.3 mm). Large egg diameter was distributed in posterior of ovaries, with 2-3 modes, and presence of atretic eggs, and was indicated as multiple spawner fish. However, based on gonado somatic index, condition factor, presence of eggs and larva in limited period showed that there were increased reproductive activities in both locations from June to September, with low wa...
... Melanotaenia eachamensis. Australian Journal of Marine and Freshwater Research 38: 897-902. B... more ... Melanotaenia eachamensis. Australian Journal of Marine and Freshwater Research 38: 897-902. Beumer JP. 1979. Reproductive ... habitat variables. Hydrobiologia 560: 159-173. Brown MD, Carter J, Thomas D, Purdie DM, Kay BH. 2002. Pulse ...
![Research paper thumbnail of 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]](https://attachments.academia-assets.com/76648401/thumbnails/1.jpg)
This research aimed to describe habitat condition of endemic arfak rainbowfish, Melanotaenia arfa... more 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...
![Research paper thumbnail of Potensi ikan pelangi arfak Melanotaenia arfakensis Allen, 1990 sebagai biokontrol larva nyamuk [The potential of arfak rainbowfish Melanotaenia arfakensis Allen, 1990 as biocontrol of mosquito larvae]](https://attachments.academia-assets.com/76648561/thumbnails/1.jpg)
Jurnal Iktiologi Indonesia, 2015
Research on the potency of Arfak rainbowfish as a biocontrol of mosquito larvae was held in Fishe... more 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 inst...
... Melanotaenia eachamensis. Australian Journal of Marine and Freshwater Research 38: 897-902. B... more ... Melanotaenia eachamensis. Australian Journal of Marine and Freshwater Research 38: 897-902. Beumer JP. 1979. Reproductive ... habitat variables. Hydrobiologia 560: 159-173. Brown MD, Carter J, Thomas D, Purdie DM, Kay BH. 2002. Pulse ...
Jurnal Sumberdaya Akuatik Indopasifik
Marine tourism is a type of special interest tourism, namely by managing and utilizing marine and... more Marine tourism is a type of special interest tourism, namely by managing and utilizing marine and coastal landscapes, both those that are managed directly such as swimming, boating, snorkeling, diving, or indirectly such as picnics and beach sports. Nusmapi Island has the potential to be developed as a marine tourism object which has the potential for waters and coral reefs that are in good condition. The purpose of this study was to determine the relationship between the level of public perception and the socio-economic conditions of the local community on Nusmapi Island. In October-November 2020 this research was carried out on Nusmapi Island, Manokwari Regency. The descriptive exploratory method is by conducting a survey to the research location. The data collected were analyzed descriptively by tabulating and displayed in the form of pictures, tables, and graphs to provide an explanation of the information obtained in this study. The relationship between the level of perception ...
Musamus Fisheries and Marine Journal
Sources of activity in Dorei Bay come from the Sanggeng market, the Wosi market, the port, the PL... more Sources of activity in Dorei Bay come from the Sanggeng market, the Wosi market, the port, the PLTD (Diesel Power Plant), hospitals, hotels, and residential areas. The seagrass system has a function as a food provider, as primary productivity in waters, dampers the arrival of waves, a place for growth and development of biota and sediment traps. Research and information on the accumulation of heavy metals in seagrass, especially Cymodocea rotundata are still very limited, especially in Doreri Bay. This study aims to describe the accumulation of heavy metals in seagrass Cymodocea rotundata, including leaves, roots, and rhizome, comparing the accumulation of heavy metals in seagrass Cymodocea rotundata each location as well as knowing the pollution index of each location. The research was conducted in Doreri Bay, Manokwari, West Papua in August 2018. The sampling locations for Cymodocea rotundata seagrass were around the waters of Pelayaran, Wosi, Yankarwar, Anggrem, and Nusmapi Islan...
VOGELKOP: Jurnal Biologi
ABSTRACTArfak rainbow fish, Melanotaenia arfakensis is an endemic fish on several river systems i... more 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)...
IOP Conference Series: Earth and Environmental Science, Dec 19, 2019
VOGELKOP: Jurnal Biologi, 2018
Seven fish species from seven families are found during this study. The most common species found... more Seven fish species from seven families are found during this study. The most common species found are Melanotaenia irianjaya (9/10 sites). No introduced species were found in any of the sites. Species richness ranged from 1-5 species per site and was highest in Aikrer Usem stream and Aisen stream. This difference between sites is partially attributed to position in order system and fishing effort. Higher order which is a combination of several creeks provided more diverse microhabitat than the lower ones, thus supporting higher fish diversity. A total of three species (42.9%) which endemic to southern Vogelkop Peninsular and northern Bomberai. Most of species are found including carnivorous, with diet consisted of aquatic and terrestrial insects, and the other benthic invertebrates. The presence of prey group is very closely related to the availability of riparian vegetation in the streams and creeks. Recommendations will include implementation of good forest management in the water...
Jurnal Ilmu Pertanian Indonesia
Jurnal Iktiologi Indonesia
Information on trophic ecology can provide an understanding of the functional role of fish in an ... more Information on trophic ecology can provide an understanding of the functional role of fish in an ecosystem, including endemic and native fish groups, as well as alien fish that are introduced through anthropogenic activities. The research on the trophic ecology of the fish community in the Nimbai Stream, Prafi River system, is intended to describe the interaction of competition and predation, especially towards endemic fish, Melanotaenia arfakensis. Fish samples were collected monthly from four habitat types, i.e., slow littoral, medium littoral, pool, and run from May 2016 to April 2017. A combination of an electric shocker and a hand net was used to collect fish samples. A total of 16 fish species were collected, consists of one endemic species, namely M. arfakensis, nine species of native fish, and six species of alien fish. The Arfak rainbowfish and three native fish species were categorized as insectivorous, four native fish species as herbivorous, and two other fishes as carni...
Jurnal Sumberdaya Akuatik Indopasifik
Informasi yang lengkap mengenai reproduksi, perkembangan awal, dan pertumbuhan larva menjadi sang... more Informasi yang lengkap mengenai reproduksi, perkembangan awal, dan pertumbuhan larva menjadi sangat penting dalam upaya penangkaran dan reintroduksi spesies ikan yang terancam punah. Salah satu di antara spesies yang mulai terancam adalah ikan elangi Arfak, Melanotaenia arfakensis yang sudah berada dalam kategori rentan dan informasinya masih sangat terbatas. Oleh karena itu, penelitian ini dilakukan dengan tujuan untuk mendeskripsikan aktivitas pemijahan, perkembangan awal, dan pertumbuhan larva spesies ikan elangi ini dalam kondisi laboratorium. Percobaan dalam skala laboratorium dilaksanakan pada bulan Maret-September 2017. Ikan yang digunakan berasal dari Sungai Nimbai. Sebanyak tiga pasang individu jantan dan betina dengan kisaran ukuran 46,5 sampai 60,1 mm dipilih untuk perlakuan. Namun, hanya satu pasangan yang berhasil diamati aktivitas pemijahannya secara lengkap. Pemijahan berlangsung di antara waktu pagi hari sampai siang hari dalam tiga periode pemijahan. Dalam setiap pe...
... Melanotaenia eachamensis. Australian Journal of Marine and Freshwater Research 38: 897-902. B... more ... Melanotaenia eachamensis. Australian Journal of Marine and Freshwater Research 38: 897-902. Beumer JP. 1979. Reproductive ... habitat variables. Hydrobiologia 560: 159-173. Brown MD, Carter J, Thomas D, Purdie DM, Kay BH. 2002. Pulse ...
Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology), 2017
The research on feeding effectiveness of Arfak rainbowfish conducted at Fisheries Laboratory, Fac... more The research on feeding effectiveness of Arfak rainbowfish conducted at Fisheries Laboratory, Faculty of Fishes and Marine Science, University of Papua in July to December 2016. The purpose of this research is to describe feeding effectiveness of the fish at several levels of water turbidity. The fish samples used in the treatment, collected from Nimbai Stream, Prafi River system, Manokwari were acclimatized for a month in the laboratory. The fish were selected based on the body length and categorized into six size classes. Each individual of the fish was treated with 200 individuals of mosquito larvae (instar IV stage) at seven turbidity levels (2.54, 25.07, 50.52, 100.20, 500.60, and 800.40 Nephelometric Turbidity Unit, NTU) using particles with size of <63um. Feeding effectiveness was indicated by the level of predation in a period of 15 minutes. The results of the research showed that average level of predation did not differ among size classes at the low level of turbidity (...
Warta Iktiologi, 2018
Papua dikenal sebagai pulau yang alamnya relatif belum banyak dijamah manusia. Pulau ini menjadi ... more Papua dikenal sebagai pulau yang alamnya relatif belum banyak dijamah manusia. Pulau ini menjadi rumah bagi banyak fauna termasuk ikan. Salah satu ikan yang hidup di sini adalah ikan pelangi arfak dan dalam beberapa literatur berbahasa Inggris dikenal sebagai arfak rainbowfish. Di daerah asalnya, yaitu di sekitar daerah Prafi, ikan ini disebut “Anggicak” dalam Bahasa Suku Arfak (Hatam) dan di daerah Kebar dikenal sebagai “Wadjen”. Berdasarkan hasil penelusuran dalam daftar merah IUCN (The International Union for Conservation of Nature) semenjak tahun 1996 sampai dengan tahun 2018, status konservasi ikan ini sudah termasuk dalam kategori rawan punah (vulnerable).
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Papers by Emmanuel Manangkalangi