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All Journal BioCONCETTA Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Elida Hafni Siregar, Elida Hafni
Universitas Negeri Medan
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Engineering

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INVENTARISASI SERANGGA PENYERBUK DI BOGOR siregar, elida hafni
Jurnal Bioconcetta Vol 2, No 2 (2016)
Publisher : STKIP PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (122.176 KB) | DOI: 10.22202/bc.2016.v2i2.1531

Abstract

Penelitian bertujuan untuk menginventarisasi serangga penyerbuk di kampus Institut Pertanian Bogor dan Universitas Indonesia. Penelitian ini dilakukan mulai dari bulan Agustus sampai September 2012 di Institut Pertanian Bogor, Bogor, Jawa Barat. Metode pengambilan sampel dengan cara penangkapan dilakukan pada siang hari mulai dari pukul 07.00-11.00 WIB. Penelitian menghasilkan 3 ordo serangga polinator (Diptera, Leidoptera, and Hymenoptera), terdiri dari 16 species. Species tersebut adalah Chrysotoxum sp., Epistrophe sp., Junonia orithya, J. atlites, Doleschallia bisaltide, Catopsilia scylla,C. Pomona, Appias olferna, Graphium agamemnon,Zizina otis, Potanthus omaha, Arctiidae spesies, Xylocopa latipes, Ceratina sp., Trigona sp., and Apis cerana. 
Growth pattern and otolith size of Tor spp. (Cyprinidae) Lubis, Khairiza; Manullang, Lydia Ruth Hasianna; Saragih, Ferosalina Natasia; Nasution, Debi Rausana; Sudibyo, Mufti; Siregar, Elida Hafni; Batubara, Agung Setia
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 1 (2025): MARCH 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.1.42028

Abstract

The threat of decreasing populations of Tor species continues to increase due to intensive fishing, habitat destruction and infrequent cultivation efforts. Monitoring of this group of fish must be carried out routinely to reveal the population conditions of fish. This research aims to reveal the population conditions of fish through an analytical approach to the length-weight relationship and fish otolith size. All fish samples were then taken for otoliths to measure their size and analyzed further using a scanning electron microscope (SEM). The research was conducted in the Tangkahan River, North Sumatra, Indonesia from January-March, 2023. The results showed that 43 samples of T. douronensis, 34 samples of T. tambra, and 24 samples of T. tambroides had b values of 2.853, 2.757, and 2.353, respectively. The b value in this study indicated that the fish had a negative allometric growth pattern. The size of the otoliths of the three Tor species shows that T. tambra has the highest length (the distance measured from the anterior to the posterior of the of sagitta otolith) on average reaching 9.31 mm, while T. tambroides and T. douronensis only reach 1.53 mm and 1.83 mm. The results were confirmed by ANOVA showing significant differences (P 0.05) in the mean value of otolith size based on Tor species, where the otolith size of T. tambra was significantly different compared to the other two species. The condition of Tor species in the Tangkahan River has experienced ecological pressure. This indication was concluded from the results of the analysis of the length-weight relationship of fish which showed b value 3 (negative allometric). The results show that the characteristics and size of the otoliths can differentiate Tor species and facilitate identification efforts related to management and conservation.Keywords:Habitat DestructionNegative AllometricAnterior of Sagitta OtolithPosterior of Sagitta Otolith
Growth pattern and otolith size of Tor spp. (Cyprinidae) Lubis, Khairiza; Manullang, Lydia Ruth Hasianna; Saragih, Ferosalina Natasia; Nasution, Debi Rausana; Sudibyo, Mufti; Siregar, Elida Hafni; Batubara, Agung Setia
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 1 (2025): MARCH 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.1.42028

Abstract

The threat of decreasing populations of Tor species continues to increase due to intensive fishing, habitat destruction and infrequent cultivation efforts. Monitoring of this group of fish must be carried out routinely to reveal the population conditions of fish. This research aims to reveal the population conditions of fish through an analytical approach to the length-weight relationship and fish otolith size. All fish samples were then taken for otoliths to measure their size and analyzed further using a scanning electron microscope (SEM). The research was conducted in the Tangkahan River, North Sumatra, Indonesia from January-March, 2023. The results showed that 43 samples of T. douronensis, 34 samples of T. tambra, and 24 samples of T. tambroides had b values of 2.853, 2.757, and 2.353, respectively. The b value in this study indicated that the fish had a negative allometric growth pattern. The size of the otoliths of the three Tor species shows that T. tambra has the highest length (the distance measured from the anterior to the posterior of the of sagitta otolith) on average reaching 9.31 mm, while T. tambroides and T. douronensis only reach 1.53 mm and 1.83 mm. The results were confirmed by ANOVA showing significant differences (P 0.05) in the mean value of otolith size based on Tor species, where the otolith size of T. tambra was significantly different compared to the other two species. The condition of Tor species in the Tangkahan River has experienced ecological pressure. This indication was concluded from the results of the analysis of the length-weight relationship of fish which showed b value 3 (negative allometric). The results show that the characteristics and size of the otoliths can differentiate Tor species and facilitate identification efforts related to management and conservation.Keywords:Habitat DestructionNegative AllometricAnterior of Sagitta OtolithPosterior of Sagitta Otolith
Co-Authors Batubara, Agung Setia Halim Simatupang Lubis, Khairiza Manullang, Lydia Ruth Hasianna Mufti Sudibyo, Mufti Nasution, Debi Rausana Saragih, Ferosalina Natasia