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All Journal Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) Biodiversitas Journal of Biological Diversity
Nur Irawati
Department Of Aquatic Resources Management, Faculty Of Fisheries And Marine Sciences, Universitas Halu Oleo. Jl. HEA Mokodompit, Kampus Bumi Tridharma Anduonohu, Kendari 93232, Southeast Sulawesi, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Other

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MAKANAN IKAN KAKATUA (Scarus rivulatus Valenciennes, 1840) DI PERAIRAN TANJUNG TIRAM, KECAMATAN MORAMO UTARA, KABUPATEN KONAWE SELATAN SULAWESI TENGGARA Asriyana Asriyana; La Asrin; Halili Halili; Nur Irawati
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 16, No 1 (2020): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (801.526 KB) | DOI: 10.14710/ijfst.16.1.8-14

Abstract

Pengetahuan tentang makanan dan tingkat pemanfaatan makanan ikan kakatua penting untuk memahami peranan ekologi ikan kakatua dalam menjaga kelangsungan dan keseimbangan kondisi terumbu karang agar tetap baik. Penelitian ini bertujuan untuk menganalisis makanan ikan kakatua di perairan Tanjung Tiram, Sulawesi Tenggara. Pengambilan contoh dilakukan sekali sebulan selama empat bulan dari bulan Januari sampai April 2018, dengan bottom experimental gillnets berukuran mata jaring 1¼, 1½,  dan 2 inci. Makanan dianalisis menggunakan indeks kepenuhan lambung, indeks bagian terbesar, luas relung, dan tumpang tindih relung. Jumlah ikan yang terkumpul sebanyak 358 ekor, dengan kisaran panjang total sekitar 69,0-195mm dan bobot 4,96-159,86 g. Ditemukan 6 macam organisme makanan dalam saluran pencernaan ikan kakatua. Menu makanan didominasi oleh kelompok alga hijau spesies Ulva lactuca dan Caulerpa racemosa. Tidak terdapat perbedaan komposisi jenis makanan ikan kakatua baik antar jenis kelamin maupun waktu pengamatan. Dalam memanfaatkan sumber daya makanan di perairan, ikan kakatua tidak selektif yang terindikasi dari nilai luas relung yang rendah. Peluang kompetisi intraspesifik terhadap makanan tertinggi saat bulan Januari hingga April. Knowledge of food habit and the level of utilization of rivulated parrotfish are important to understanding the role of parrotfish ecology in maintaining the continuity and balance of coral reef conditions to remain good. This study aims to analyze the food habit of rivulated parrotfish in the waters of Tanjung Tiram, Southeast Sulawesi.Sampling was done monthly from January to April 2018, with bottom experimental gillnets with mesh size 1 ¼, and 1 ½ inches. The food habits was analyzed using index of fullness, index of preponderance,niche breadth, and niche overlapping. There were 358 fish with total length and weight ranged from 69.0-195.0 mm and 4.96-159.86 g respectively. There were six grouped of food organisms in the digestive tract of rivulated parrotfish. Important diet of rivulated parrotfish is green algae, Ulva lactuca and Caulerpa racemosa species.This study concludes that sex and temporal variations of food composition do not differ significantly.In utilizing food resources in the waters, rivulated parrotfishis not selective which is indicated by a low value of niche breadth. The highest intraspecific competition for food is from January to April.
Pemberdayaan Kelompok Masyarakat Pesisir melalui Budi Daya Rumput Laut Metode Vertikultur di Kawasan Perdesaan Tumbuh Lestari Desa Rambu Rambu, Kabupaten Konawe Selatan Nur Irawati; Asriyana Asriyana
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 6 No. 3 (2020): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.6.3.239-248

Abstract

Rambu-rambu Village is one of the villages clustered within the Tumbuh Lestari rural area of North Konawe District. The main purpose of this project was to empower the coastal community groups in Rambu-rambu Village through the introduction of in-cage verticulture farming of seaweed. The project was carried out within the scheme of Community Service Program (PKM/Pengabdian Kepada Masyarakat) funded by the University of Halu Oleo. The project lasted for 30 days from 29 June to 28 July 2019. The activity consisted of three stages, are initial dissemination activity, preparation of the training, and implementation of training of seaweed culture. The project involved 20 students of the University of Halu Oleo and 42 people from fishermen, fisherme wifes, and farmer groups. Before the training was conducted 66.7% of the participants did not have the knowledge and after the training 71.4% of the respondents gained an understanding regarding the seaweed verticulture farming method. The improvement of skill was also evident where before the training, 81% of the participants were not able to do seaweed farming method and after the training, 61.9% of the participants were capable or skilled of repeating the seaweed verticulture method. The increased knowledge of the participants could be described from their ability to clearly explain types of seaweed species used, the benefits of seaweed, and the characteristics of high quality of seaweed seed. The improved skill of the participants were also observed from their skill in constructing the seaweed raft and seaweed net cage, tying up the seaweed seed, and conducting the observation of water quality condition in the location of seaweed farming. The result of this activity showed an increased of knowledge and skill of the trained participants regarding seaweed farming using verticulture method.
Food and feeding strategy of sunrise goatfish Upeneus sulphureus, Cuvier (1829] in Kendari Bay, Southeast Sulawesi Asriyana Asriyana; Nur Irawati
Jurnal Iktiologi Indonesia Vol 18 No 1 (2018): February 2018
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v18i1.372

Abstract

Knowledge of food and feeding strategies are essential to understand the ecological role and productive capacity of fish populations. This information is critical for development of conservation and management plans of fishery resources. This study aimed to analyze the food and feeding strategy of sunrise goatfish in Kendari bay. Sampling was done monthly from May to November 2016, with bottom experimental gillnets with mesh size ¾, 1, 1 ¼, and 1 ½ inches. The food habits was analyzed using index of preponderance; while feeding strategy was determined by Amundsen modified Costello method. There were 386 fish with total length and weight ranged from 46.0-176.0 mm and 3.0-67.1 g, res-pectively. The fish were categorized into 3 groups based on the length sizes. The length sizes were classified into small size (45.0-69.7 mm), medium size (69.8-94.3 mm) and large size (94.4-119.0 mm). Twenty eight species of organisms were found in the digestive system of the sunrise goatfish dominated by the phytoplankton genus Thallasiothrix. The sunrise goatfish has significant dietary changes with increasing total length and time. The sunrise goatfish developed mix feeding strategies; specialist and generalist. Generalist strategy developed for all prey, except Thallasiothrix obtained by spesialist strategy. Abstrak Pengetahuan tentang makanan dan strategi pola makan adalah penting untuk memahami peran ekologi dan kapasitas produktif populasi ikan. Informasi tersebut sangat penting untuk pengembangan rencana konservasi dan pengelolaan sumber daya ikan. Penelitian ini bertujuan untuk menganalisis makanan dan strategi pola makan ikan kuniran di per-airan Teluk Kendari. Pengambilan contoh dilakukan sekali sebulan dari bulan bulan Mei sampai November 2016, de-ngan jaring insang eksperimental berukuran mata jaring ¾, 1, 1 ¼, dan 1 ½ inci. Kebiasaan makanan dianalisis meng-gunakan metode indeks bagian terbesar, sedangkan strategi pola makan ditentukan melalui metode Costello yang dim-odifikasi oleh Amundsen. Jumlah ikan yang terkumpul sebanyak 386 ekor dengan kisaran panjang total 46,0–176,0 mm dan kisaran bobot 3,0–67,1 g. Ikan dikelompokkan kedalam tiga kelompok ukuran yaitu ukuran kecil (46,0–90,0 mm), sedang (91,0–134,0 mm), dan ukuran besar (135,0–176,0 mm). Ditemukan 28 jenis organisme makanan dalam saluran pencernaan ikan kuniran. Menu makanan didominasi oleh kelompok fitoplankton genus Thallasiothrix. Ikan kuniran mengalami perubahan makanan yang signifikan sejalan dengan bertambahnya ukuran panjang tubuh dan waktu. Dalam memanfaatkan makanan di perairan, kuniran umumnya mengembangkan strategi pola makan campuran antara generalis dan spesialis. Strategi pola makan generalis dikembangkan untuk memperoleh semua jenis mangsa, kecuali mangsa Thallasiothrix diperoleh dengan strategi pola makan spesialis.
PENDUGAAN KESUBURAN PERAIRAN BERDASARKAN SEBARAN NUTRIEN DAN KLOROFIL-a DI TELUK KENDARI SULAWESI TENGGARA Nur Irawati
AQUASAINS Vol 3, No 1 (2014)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1279.335 KB)

Abstract

Eutrofication is an increase of nutrient supply (nitrogen and phosphor) to a very high concentration and above the limit that the nature can cope with. This recent research was aimed to predict the eutrofication  of the waters based on the distribution of nutrients and chlorophyll-a and conducted on November 2012. The research was carried out by considering two main parameters which were main research parameters and supporting parameter over physical, chemical and biological variables. The main research parameters consisted of total N and P, chlorophyll-a and dissolved oxygen of which those variables were the main variables used in the TRIX index analysis (an index used to characterized the trophic status of a body of waters). The fertility status of Kendari Bay based on TRIX index was categorized as eutrophic having TRIX index of 5.12. It is confirmed that the level of nutrient (TN and TP), chlorophyl-a and water clarity determines the fertility status of a water body ranging from oligotrophic to hypertrophic.
Length-weight relationships and ponderal index of three reef fish (Teleostei: Labridae) off the Tanjung Tiram coast, Southeast Sulawesi, Indonesia Asriyana Asriyana; Nur Irawati; Halili Halili
Biodiversitas Journal of Biological Diversity Vol. 21 No. 4 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d210402

Abstract

Abstract. Asriyana A, Irawati N, Halili H. 2020. Length-weight relationships and ponderal index of three reef fish (Teleostei: Labridae) off the Tanjung Tiram coast, Southeast Sulawesi, Indonesia. Biodiversitas 21: 1279-1286. Parameters of length-weight relationship and ponderal index were estimated for first time for three reef fish (Labridae), Cheilinus trilobatus, Cheilinus chlorourus, and Choerodon anchorago, off the Tanjung Tiram coast, Indonesia. A total of 292 specimens (C. trilobatus 146 specimens; C. chlorourus 100 specimens; C. anchorago 46 specimens) were collected monthly in experimental gillnets in coral reefs and seagrass beds from January to June 2018. The length-weight relationship and ponderal index were calculated for each species. C. trilobatus showed total length and weight of 9.0-17.2 cm and 12.33-78.79 g, respectively, while C. chlorourus was 8.5-17.5 cm and 10.41-100.21 g, and C. anchorago 9.0-27.0 cm and 18.51-414.00 g. C. trilobatus showed negative allometric growth, while C. chlorourus and C. anchorago had isometric growth. The length-weight relationship of C. trilobatus followed the linear equation of W=0.10TL2.35, while C. chlorourus and C. anchorago fit to W=0.03TL2.83; W=0.03TL2.91 respectively. The highest ponderal index occurred in May for C. trilobatus and in June for C. chlorourus and C. anchorago indicating a peak of the spawning season. The study results could be used as baseline information for future fisheries management of the area.
Co-Authors Asriyana Asriyana Asriyana, . Halili Halili Halili Halili La Asrin