Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal METAMORFOSA Journal of Biological Sciences Jurnal Biologi Udayana Ecotrophic, Journal of Environmental Science
I Wayan Kasa
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

Published : 7 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search
Journal : METAMORFOSA Journal of Biological Sciences

 1 
Pemilihan Pakan Alami Untuk Mendukung Pemeliharaan Ikan Capungan Banggai (Pterapogon kauderni) Di Lini Aquaculture Training Center (Latc) Bali Hasrat Damai Hulu; Pande Gde Sasmita Julyantoro; I Wayan Kasa
Metamorfosa: Journal of Biological Sciences Vol 7 No 1 (2020)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2020.v07.i01.p01

Abstract

This research was aimed to obtain the kind of proper natural food and the optimum dose of feeding in order to support the rearing of banggai cardinal fish breeding. This research used completely randomized design and was conducted during September to December 2016. The kinds of natural food examined were trash fish, abalone (Haliotis glabra), and squid (Loligo pealei). After we found the most preferable food, the examination upon its dose was conducted under 10%, 20% and 30% of the fish weight. The 45 fish sampel have average length and weight of 3 cm and 0,47 g, respectively. Fish were reared in aquarium 95 cm x 45 cm x 35 cm. The foods were given three times a day. The research results show that abalone was mostly consumed compared to other two foods about 0,11 g/fish a day. The result of examining dose showed that the highest rate of fish growth was found under the dose of 30% which resulted 2,07 cm in length, 0,34 g in weight and the dose of 20% which resulted 2,07 cm in length, 0,33 g in weight. The statistical test result showed that the treatment under the dose of 30% and 20% was not significantly different (P>0,05). Base on this study, it can be concluded that abalone is the proper natural food that supports the rearing of banggai cardinal fish with optimum dose of 20 % of fish weight per day. Keywords: Banggai cardinal fish, Natural Feed, Lini Aquaculture Training Center.
MORFOMETRI DAN KEMATANGAN GONAD BELUT LAUT (Macrotema caligans) DI PANTAI SANUR Ni Made Sekarmini; Ni Luh Watiniasih; I Wayan Kasa
Metamorfosa: Journal of Biological Sciences Vol 3 No 2 (2016)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2016.v03.i02.p05

Abstract

The purpose of this study was to determine the effect of habitat on the morphometric and gonadal development and to know the range of index values ??gonad maturity sea eel (Macrotema caligans). The results showed that habitat mainly the population of seagrass is related to morphometry sea eel. At five sites studied showed an average size morphometry highest in the sea eel living in Semawang Beach, which is the average size body length of 24.96 ± 0.95 cm. This study also shows morphometry females sea eel larger than males. Gonadal development of eel female is formed through the five stages. The first stage, characterized by underdeveloped oogonia,  the second stage, a massive increase gonads up to three times the original size. The third stage, lipid vacuoles are formed inside the egg with an increase in cell volume. The fourth stage, marked by the maturation of oocytes and the fifth stage, oocytes undergo atresi. Values ??range of gonad maturation index sea eel (Macrotema calligans) on the entire study was 0.16% to 9.75%.
EFFECT OF ENVIRONMENTAL DEGRADATION ON ANIMAL DIVERSITY IN BALI, INDONESSIA I Wayan Kasa
Metamorfosa: Journal of Biological Sciences Vol 2 No 2 (2015)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

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

Abstract

Bali is a small beautiful tropical island of Indonesia archipelago, lies between the continent of Asia and Australia, as well as the Indian and Pacific Ocean. As a tropical archipelago, many kinds of biodiversity can be found. The island of Bali in particular, there are typical animal diversity that could not be investigated beyond such island, such as, Bali cattle, Bali dog, Bali starling and others. As time goes on, the existance of such biodiversity decreases in both body weight and population number. Both global warming/climate change and land use change are the main factors affecting such phenomenon. This study has been conducted by employing field observation as well as literature study. It was found that, the quality of purebred Bali cattle species decreases genetically that could be notified of smaller bodysize for both male and female. Land use change of agriculture activity to the hotels, house of living, roads and other infrastructures are the main factors for Bali cattle existence. For typical famous bird of Balistarling, the problem is because of deforestation which cause natural habitat loss, due to land use change for agricultural activity and house building by local people. In case of Bali dog, the mad dog of rabies is just introduce and spreading over Bali island, whichis formerly the island of Bali has been recognised as free zone area of the rabies. As consequence, suffering dogs must be eliminated by  mass killing cause decrease total number of such poor dog. Overall, it could be concluded that environmental degradations of land use change, deforestation and desease are the main causes of biodiversity decreasing number of the Bali cattle, Bali white starling and Bali dog respectively, beside global warming/climate change natural disaster. Key words: Environment, Bali cattle, Bali starling, Bali dog, Bali island.
Co-Authors A.A.S. A. Sukmaningsih Bardiyanto - Hasrat Damai Hulu I K. Putra Juliantara I W BUDIARSA SUYASA Ida Bagus Gede Darmayasa Marfu'ah, Nurul Ni Luh Gede Sudaryati Ni Luh Watiniasih Ni Made Sekarmini Pande Gde Sasmita Julyantoro Sagun Chandra Yowani