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All Journal Journal of Marine and Aquatic Sciences Ecotrophic, Journal of Environmental Science BERITA BIOLOGI Jurnal Sumberdaya Akuatik Indopasifik Jurnal Perikanan Universitas Gadjah Mada Indonesian Fisheries Research Journal Bawal : Widya Riset Perikanan Tangkap Current Trends in Aquatic Science Journal of Marine Research and Technology Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) Advances in Tropical Biodiversity and Environmental Sciences SEAS (Sustainable Environment Agricultural Science) INTERNATIONAL JOURNAL OF ECONOMIC LITERATURE
Nyoman Dati Pertami
Manajemen Sumberdaya Perairan, Fakultas Kelautan Dan Perikanan, Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science Immunology & microbiology Veterinary Other

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Some Biological Aspects of Spotted Barb Barbodes binotatus (Valenciennes, 1842) in Tamblingan Lake Ni Made Sita Aditya Putri; Nyoman Dati Pertami; I Nyoman Yoga Parawangsa
Jurnal Perikanan Universitas Gadjah Mada Vol 24, No 1 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.69415

Abstract

The biological aspects of the spotted barb, Barbodes binotatus (Valenciennes, 1842) in Tamblingan Lake were not published yet. This study aims to determine the biological aspects of spotted barb in Tamblingan Lake. Fish samples were captured using gill nets with various mesh sizes at five fixed stations monthly from January to December 2019. A total of 357 individuals of the spotted barb was collected, with the total length of the specimens ranging from 3.9 to 15.6 cm, and total weight varied between 0.93 and 60.30 g. The length-weight relationship for males and females were expressed as W = 0.0375L2.83 and W = 0.0272L3.02, respectively. The growth pattern for males and females was allometric negative and isometric, subsequently. The male-female sex ratio was 1.10:1, and the condition factor for males and females were 0.75-1.42 and 0.40-1.49, respectively. We observed male fish with gonad maturity stage I to IV. In contrast, female fish have gonad maturity stage II to V. The highest gonadosomatic index of male and female fish was found in September, indicating a peak of the spawning time. Fecundity ranged from 57-23897 eggs, with an average of 5901 eggs.
The Length-Length Relationships, Growth Pattern and Condition of Rasbora sp. in Tamblingan Lake, Bali Island I Nyoman Yoga Parawangsa; Prawira A.R.P. Tampubolon; Nyoman Dati Pertami
SEAS (Sustainable Environment Agricultural Science) Vol. 6 No. 1 (2022)
Publisher : Warmadewa University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/seas.6.1.4918.34-41

Abstract

Rasbora sp. is one of native fish species that inhabit in Tamblingan Lake. Several publication that discussed about this species in other ecosystem was published, but very rare information in Tamblingan Lake. The aims of this research ware determine the length-length relationships, growth pattern and condition Rasbora sp. in Tamblingan Lake. Fish sampling conducted from January to December 2019 in Tamblingan Lake. The sampling method was purposive sampling which did alternately every month on five sampling station that representing the condition of Tamblingan Lake. The result shown, all character of length has strong correlation with body weight of fish, but the total length (TL) was the most accurate measure to estimating the body weight of Rasbora sp. The growth pattern of Rasbora sp. was isometric and the condition of this fish in good condition.
Percentage of Mangrove Canopy Cover and Mollusks Abundance in Benoa Bay Mangrove Ecosystem Shintani Asri Tinambunan; Nyoman Dati Pertami; Ni Made Ernawati
Advances in Tropical Biodiversity and Environmental Sciences Vol 5 No 3 (2021): ATBES
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (653.011 KB) | DOI: 10.24843/ATBES.2021.v05.i03.p05

Abstract

This research was conducted to determine the condition of the mangrove ecosystem based on its canopy cover and to determine the types of mollusks (Bivalves and Gastropods) associated with the Benoa Bay mangrove ecosystem. Hemispherical photography is a method for observing mangrove canopy cover and line transect method for mollusks. The composition of mangrove species found in the research location were five species, namely Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Avicennia marina. The percentage of mangrove canopy cover in the Benoa Bay mangrove ecosystem is in a good category (average = 76.59%). There are eight types of mollusks found in the research location. There are two types of bivalves (Polymesoda bengalensis and Gafrarium pectinatum) and six types of gastropods (Nerita balteata, Nerita picea, Neritina turrita, Pila ampullacea, Cassidula aurisfelis, and Littoraria melanostoma). The relationship between the percentage of mangrove canopy cover and abundance of mollusks in the Benoa Bay mangrove ecosystem is very strong (r) of 0.920. The higher the percentage value of mangrove canopy cover, the higher the mollusks abundance.
Ichthyofauna from southwest coast of Bali Nyoman Dati Pertami; Prawira ARP Tampubolon; I Nyoman Y Parawangsa; Muhammad Bisma
Jurnal Iktiologi Indonesia Vol 22 No 2 (2022): June 2022
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v22i2.650

Abstract

The southwest coast of Bali is part of the waters of the Bali Strait. Information regarding ichthyofauna diversity around southwest coast of Bali is not yet done. This study aims to reveal the Ichthyofauna of fish in the waters of the southwest coast of Bali. The study was conducted from April 2017 to May 2018 at three sampling stations including the waters of Pengambengan and Pekutatan (Jembrana Regency), with waters of Yeh Leh (Tabanan Regency). Fish are caught using gill nets and ring trawls. This study succeeded in identifying 43 species of fish representing 24 families. Most types of fish caught are Goldstripe sardinella (Sardinella gibbosa) (36%), Shortfin scad (Decapterus macrosoma) (20%), Bali sardinella (Sardinella lemuru) (16%), and Bullet tuna (Auxis rochei) (7%). Abstrak Pantai barat daya Bali merupakan bagian dari kawasan perairan Selat Bali. Informasi terkait iktiofauna di pantai barat daya Bali belum pernah dilakukan. Penelitian ini bertujuan untuk mengungkap keberagamana ikan di perairan pantai barat daya Bali. Penelitian dilakukan pada bulan April 2017 hingga Mei 2018 di tiga stasiun pengambilan sampel meliputi perairan Pengambengan dan Pekutatan (Kabupaten Jembrana), serta perairan Yeh Leh (Kabupaten Tabanan). Ikan ditangkap dengan menggunakan jaring insang dan pukat cincin. Penelitian ini berhasil mengidentifikasi 43 jenis ikan yang mewakili 24 famili. Jenis ikan yang paling banyak tertangkap adalah tamban (Sardinella gibbosa) (36%), layang (Decapterus macrosoma) (20%), lemuru (Sardinella lemuru) (16%), dan tongkol (Auxis rochei) (7%).
Penilaian Kondisi Teknik Penangkapan Ikan Lemuru (Sardinella lemuru) Berdasarkan Pendekatan EAFM di PPI Kedonganan, Bali Atanasius Jenarut; Nyoman Dati Pertami; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 5 No 1 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Ecosystem Approach to Fisheries Management (EAFM) is a management concept through an integrated and ecosystem-based approach. This study aimed to describe the condition of Bali Sardinella (Sardinella lemuru) at Kedonganan Fish Port and assess the management of this species based on the EAFM fishing technique domain. The assessment method refers to the methodology used by the National Working Group on EAFM, Directorate of Fish Resources, Ministry of Marine Affairs and Fisheries of Republic Indonesia, 2014. Data analysis used a Likert score based on ordinal 1, 2, 3 against indicators such as destructive/illegal fishing methods, modification of fishing gear, fishery capacity and fishing effort, fishing selectivity. Then, function suitability indicators and size of the ship is fishing boat crew certification adjusted to the status of Kedonganan fish port. Kedonganan fish port was a small- scale fishery. The scores obtained for each indicator was destructive/illegal fishing methods get a score of 2, modification of fishing gear get a score of 1, while indicators of fishery capacity and fishing effort and fishing selectivity get a score of 3. Lemuru fisheries management at Kedonganan fish port technical classified as good with the composite value of 69.
Aspek Biologi Reproduksi Ikan Tongkol Krai (Auxis thazard Laceoede, 1800) di Perairan Kedonganan, Badung Bali Ni Luh Kade Putri Purwaningsih; Nyoman Dati Pertami; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 5 No 1 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Frigate tuna is one type of small pelagic fish that belongs to the neritic tuna (15-30 mil). This study aimed to determine the reproductive biology aspects of frigate tuna (Auxis thazard). Reproductive biology aspects can be identified by observing the sex ratio, gonad maturity level gonadal maturity index, fecundity and the size of the first gonadal maturity. Sampling was carried out in January – March 2021 with a span of 14 days at the Kedonganan Fish Landing Base. Samples were obtained from local fishermen who do one day fishing. The total fish samples observed during the study were 161 males and 174 females (335 individuals). The sex ratio of male and female tuna is 1:0.9 and is stated to be in a balanced condition. Furthermore, the gonad maturity level, during the study was dominated by levels II and III, with the gonad maturity index of male fish ranging from 6.25 to 8.31 and female fish 6.26 to 8.91. The spawning period for tuna krai in Kedonganan waters occurs in January-March and the peak of spawning occurs in March. The fecundity of krai cobs ranged from 75107 to 750470 grains (average 201.463 grains). The size of the gonads at first maturity of male krai tuna was slower than that of female tuna (321 and 336 in mm).
Keanekaragaman dan Asosiasi Antarspesies Lamun di Perairan Pantai Samuh, Nusa Dua, Bali Ayu Padma Sari; Nyoman Dati Pertami; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 5 No 1 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Seagrass are flowering plants which have rhizomes, leaves and true roots. Most types of seagrass in Indonesia are found in Bali. One of the distributions of seagrass in Bali is Samuh Beach. This study aimed to determine the diversity of seagrass and association patterns between seagrass in Samuh Beach. This research conducted on January-February 2021. There were three observation stations, namely station I (fishing boat landing sites), station II (tourist activities), and station III (hotel area locations). The method used in this research was descriptive method Observation of seagrass samples using a 50×50 cm quadratic transect. Data analysis was carried out by calculating density, cover percentage, diversity index, uniformity index, dominance index, and associations between seagrass species. There were eight types of seagrass in Samuh Beach (Enhalus acoroides, Cymodocea rotundata, Cymodocea serrulata, Halodule pinifolia, Halodule uninervis, Halophila ovalis, Syringodium isoetifolium, and Thalassodendron ciliatum). The diversity of seagrass in Samuh Beach from observations at stations I and II in balanced conditions with a value of 1.42 and 1.52. Station III was a low category (0.79). There were 14 association pairs species of seagrass in Samuh Beach. The 12 association pairs were not related and 2 association pairs were related at the 5% level, (3.48, ?2 count> ?2 table). The related association pairs have positive association types, namely Syringodium isoetifolium with Halophila ovalis and negative associations, and Syringodium isoetifolium with Halodule pinifolia.
Pemberian Pakan Limbah Lemuru pada Pertumbuhan Ikan Cupang (Betta splendens) Indra Nur Cahyati; Nyoman Dati Pertami; Gde Raka Angga Kartika
Current Trends in Aquatic Science Vol 5 No 2 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Betta fish (Betta splendens) is an ornamental fish that is in great demand by the community from adults to children. This fish has features such as beautiful body color, unique fin shape, and easy to maintain in a low oxygen environment. The growth rate is still slow causing the maintenance period to be relatively long so that the profits obtained are relatively small. Feeding is one of the important factors in the growth optimization process. Feed that has high protein can be used as a solution in betta fish cultivation. The feed used in the study was lemuru waste (head and bones). This study was conducted to determine the growth of betta fish (Betta plendens) fed lemuru waste feed. The study was conducted with the control jar treatment, the treatment jar A using a dose of 3%, the treatment jar B using a dose of 6%, the treatment jar C using a dose of 9%. This research was conducted for 42 days. Betta fish growth in the form of absolute weight, absolute length, specific growth rate (SGR), survival rate (SR), feed conversion ratio (FCR). Water quality parameters measured in this study include temperature, pH and DO. The results of the ANOVA study showed that survival had no significant effect on fish growth, while absolute weight, absolute length, SGR and feed conversion ratio had a significant effect on the growth of betta fish. The water quality parameters measured included temperature ranging from 27.20 to 27.69 0C, DO with a range of 3.00-3.03mg/L and a pH of 6.60-6.68.
Pertumbuhan Ikan Tongkol Lisong (Auxis rochei Risso, 1810) di Perairan Kedonganan, Bali Ghina Nafis Rahmatullah; Nyoman Dati Pertami; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 5 No 2 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Bullet tuna (Auxis rochei) is a type of pelagic fish that has important economic value and is a source of livelihood for fishermen in the waters of Kedonganan, Badung, Bali. This study aims to determine the growth of bullet tuna (Auxis rochei) by analyzing the length frequency distribution, growth patterns, condition factors, age groups, and growth parameters. Sampling of bullet tuna was carried out from January to March 2021, as many as 6 times sampling with a span of once every 14 days. The total samples of bullet tuna obtained were 638 individuals. The distribution of the length distribution of bullet tuna is between 268-376 mm. The results showed that the growth pattern of male and female bullet tuna was negative allometric which indicated that the fish's length increased faster than its weight gain. The condition of bullet tuna in Kedonganan waters based on the results of the study showed that bullet tuna were in a less good condition. The value of the condition factor of the female bullet tuna decreased from January to March, while the condition factor of the male bullet tuna decreased only in February. There was a shift in the age group from observations 1 to 5 in the age group to the right, in contrast to observations from 5 to 6 there was no shift in age groups. The growth coefficient (K) of bullet tuna is 0.57 per year, where the asymptotic length is 387.07 mm and the theoretical age of fish at length 0 is -0.854. Based on the parameters of the growth coefficient, it can be seen that the annual growth of bullet tuna in Kedonganan waters is not fast and not large.
Analisis Kesesuaian Wisata dan Kesediaan untuk Membayar Kategori Wisata Rekreasi di Pantai Samuh, Bali Angel Maria Arief; Nyoman Dati Pertami; Made Ayu Pratiwi
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p13

Abstract

This study aimed to determine the tourism suitability index and the willingness to pay (WTP) for the category of beach recreation tourism in Samuh Beach area, Bali. The research method used was descriptive qualitative. The parameters used to determine the value of the coastal recreation were beach type, beach width, current speed, brightness, depth, beach slope, water base material, current velocity, coastal land cover, hazardous biota, and availability of fresh water. The calculation result of the tourism suitability index value at Samuh Beach for beach recreation activities at station I was 2.05% which included in the Suitable category, station II was 2.88% which included in the Very Suitable category, and Station III was 2.92% which included in the category. Very Suitable category. Based on that result, it can be seen that station III occupies the highest IKW value in the Very Suitable category. The average value of tourism suitability index in Samuh Beach was 2.62% (very suitable category). The average value of the WTP was IDR 9.500,- and the total value was IDR 57.000.000,- - at Samuh Beach. This value was greater than the entrance fee for Samuh Beach tourism in the form of a motorbike parking fee of IDR 2000, - and a car park of IDR 5000,- respectively. Respondents are willing to pay more for environmental services obtained from tourism objects in Samuh Beach.
Co-Authors Angel Maria Arief Arief Wujdi Ario Damar Atanasius Jenarut Ayu Padma Sari Ayu Putu Wiweka Krisna Dewi Devi Ulinuha Farhan Danu Fauzan Franceska Kendra Rossa S Gabrielle Aisya Gde Raka Angga Kartika Ghina Nafis Rahmatullah I Ketut Wija Negara I Nyoman Y Parawangsa I Nyoman Yoga Parawangsa I Nyoman Yoga Parawangsa I Nyoman Yoga Parawangsa I Nyoman Yoga Parawangsa I Nyoman Yoga Parawangsa I Wayan Arthana I.W. Nurjaya Ima Yudha Perwira Indra Nur Cahyati M.F. Rahardjo M.F. Rahardjo Made Ayu Pratiwi Muhammad Bisma Ni Luh Kade Putri Purwaningsih Ni Made Ernawati, Ni Made Ni Made Sita Aditya Putri Ni Made Sita Aditya Putri Prawira A. R. P Tampubolon Prawira A. R. P. Tampubolon Prawira A.R.P. Tampubolon Prawira ARP Tampubolon Prawira Atmaja Rintar Pandapotan Tampubolon Prawira Atmaja Rintar Pandapotan Tampubolon Prawira Atmaja Tampubolon Putra, I Nyoman Giri Putu Tegar Wiguna Putra Riska Purwanto Shintani Asri Tinambunan Susumu Kanno