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All Journal Acta Aquatica: Aquatic Sciences Journal
Wayan Kantun Dananjaya
Institut of Technology and Business Maritime
Materials Science & Nanotechnology Other

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Size and growth of the threadfin bream (Nemipterus japonicus Bloch, 1791) which was caught in the fishing apartment in Kire Waters Central Mamuju Ibrahim Ibrahim; Wayan Kantun Dananjaya; Wilma Joana Moka
Acta Aquatica: Aquatic Sciences Journal Vol. 12 No. 1 (2025): Acta Aquatica: Aquatic Sciences Journal
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v1i1.14361

Abstract

Threadfin bream is a demersal fish that is intensively used by the community because it has high economic value. thereby encouraging increased fishing efforts both in open waters and in areas where fish apartments are installed. Therefore, there is a need for studies of Threadfin bream caught in fish apartments as an effort to maintain their survival. This research aims to analyze the size distribution, length-weight relationship, and condition factors of threadfin bream caught in fish apartments. The research is classified as a survey type with data sources from fishermen's catches carried out in three fish apartments that have been installed for six years in Kire Budong-Budong Village, Central Mamuju Regency. The research results showed that the number of threadfin bream that were observed was 205 fish with a distribution of 46 fish in the first apartment, 67 fish in the second apartment and 92 fish in the third apartment. The length and weight of threadfin bream caught in each apartment were 20.28 ± 2.74 cm and 120.66 ± 37.84 g for the first apartment, 20.16 ± 3.24 cm and 121.52 ± 48, respectively. 44 for the second apartment 20.13 ± 3.15 cm and 120.74 ± 45.85 g for the third apartment. Meanwhile, the growth pattern of threadfin bream for the three fish apartments was negative allometric and the condition factor value ranges from 0.8872 to 1.145.Keywords: Central Mamuju; Condition Factor; Fish Apartment; Growth; Size Distribution; Threadfin Bream
The appearance of whale shark (Rhincodon typus) in Kwatisore Waters, Nabire District, Central Papua Province Olfie Punusingon; Wayan Kantun Dananjaya; Nuraeni L. Rapi
Acta Aquatica: Aquatic Sciences Journal Vol. 11 No. 3 (2024): Acta Aquatica: Aquatic Sciences Journal
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i3.14384

Abstract

The appearance of whale sharks (Rhincodon typus) is related to the availability of food in certain waters and is a tourist attraction so integrated management is needed so that they do not become a threat to whale sharks. Whale sharks appear regularly and take place throughout the year with the largest number of individuals only occurring in Kwatisore waters. This study aims to examine the bioecology of whale sharks, which is related to appearance based on individuals, number and time of appearance and sex. Primary data collection was carried out from January to March 2023, using the census method on 4 charter fishing gear units anchored in Kwatisore waters. The results showed that 21 individuals of whale sharks appeared with a total of 225 appearances in January, 245 appearances in February and 248 appearances in March and there was one new individual who migrated into Kwatisore waters with ID number 184. Whale sharks appear mostly in the morning with a percentage of 100% with a total length ranging from 3 to 7.5 m.Keywords: Appearance; New Individuals; Whale Sharks
Co-Authors Ibrahim Ibrahim Nuraeni L Rapi Olfie Punusingon Wilma Joana Moka