Inayah, Zakiyyah Nur and Prof. Dr. Ir. Diana Arfiati,, M.S. (2021) Keanekaragaman Plankton pada Perairan dan Lambung Ikan Nila (Oreochromis niloticus) di Waduk Selorejo, Kecamatan Ngantang, Kabupaten Malang. Sarjana thesis, Universitas Brawijaya.
Abstract
Keberadaan plankton di perairan dapat menentukan kebiasaan jenis makanan yang dikonsumsi ikan nila di Waduk Selorejo. Tujuan penelitian ini yaitu mengetahui keanekaragaman plankton perairan dan kualitas air Waduk Selorejo, membedakan keanekaragaman plankton pada lambung ikan nila dengan keanekaragaman plankton pada perairan waduk serta mendapatkan kebiasaan makanan ikan nila. Penelitian ini dilaksanakan pada bulan Maret 2021, sampel air dan ikan diambil dari Waduk Selorejo, Kecamatan Ngantang, Kabupaten Malang dan pengujian beberapa parameter air dilakukan di Laboratorium Perikanan Air Tawar, Fakultas Perikanan dan Ilmu Kelautan, Universitas Brawijaya. Penelitian ini merupakan penelitian deskriptif dengan metode survey. Hasil penelitian menunjukkan bahwa plankton perairan dan lambung ikan nila di Waduk Selorejo terdiri atas fitoplankton dan zooplankton dengan komposisi fitoplankton lebih banyak. Fitoplankton di perairan terdiri atas 6 filum dan 31 genus. Filum fitoplankton perairan yaitu Bacillariophyta, Chlorophyta, Chrysophyta, Chryptophyta, Cyanophyta dan Euglenophyta. Hanya filum Chryptophyta yang tidak ditemukan di lambung ikan nila. Genus fitoplankton yang ditemukan di air dan lambung ikan nila yaitu Microspora sp., Oedogonium sp. dan Oscillatorisa sp., sedangkan Chlamydomonas sp., Cryptomonas sp. dan Anabaenopsis sp. hanya ditemukan di Air. Persentase kehadiran filum fitoplankton tertinggi di air yaitu Cyanophyta (66.1%), sedangkan tertinggi di lambung yaitu Bacillariophyta (45.7%). Zooplankton perairan ditemukan 3 filum yaitu Arthropoda, Rotifera dan Sarcodina yang terdiri dari 10 genus, sedangkan di lambung Nila hanya diperoleh 2 filum yaitu Arthropoda, Rotifera terdiri dari 9 genus. Filum zooplankton tertinggi di perairan dan di lambung adalah Arthropoda. Jika diperhatikan dari kelimpahan plankton maka Waduk Selorejo menunjukkan perairan eutrofik. Persentase jumlah fitoplankton di perairan adalah 96% dan zooplankton 4%, sedangkan di lambung fitoplankton 99% dan zooplankton hanya 1%. Ikan nila memakan sebagian besar plankton yang terdapat diperairan dengan komposisi fitoplankton lebih banyak sehingga termasuk ikan herbivora cenderung omnivora. Persentase jumlah fitoplankton di perairan dan lambung lebih tinggi dari pada zooplankton. Kualitas air Waduk Selorejo sesuai dengan baku mutu perairan kelas 3, PP No. 22 tahun 2021, dengan demikian diperlukan suatu upaya agar kualitas air Waduk Selorejo tetap dapat dimanfaatkan untuk perikanan ikan nila.
English Abstract
The presence of plankton in the waters can determine the type of feed consumed by Tilapia in Selorejo Reservoir. The purpose of this study is to determine the diversity of aquatic plankton and water quality of the Selorejo Reservoir, to distinguish the plankton diversity in the stomach of Tilapia and the diversity of plankton in the reservoir waters and to get the food habits of Tilapia. This research was conducted in March 2021, water and fish samples were taken from Selorejo Reservoir, Ngantang District, Malang Regency and testing of several water parameters was carried out at the Freshwater Fisheries Laboratory, Faculty of Fisheries and Marine Sciences, University of Brawijaya. This research is a descriptive with a survey method. The results showed that the aquatic plankton and stomach of Tilapia in Selorejo Reservoir consisted of phytoplankton and zooplankton with more phytoplankton composition. Phytoplankton in waters consists of 6 phyla and 31 genera. The phylum of aquatic phytoplankton are Bacillariophyta, Chlorophyta, Chrysophyta, Chryptophyta, Cyanophyta and Euglenophyta. Only the phylum Chryptophyta is not found in the stomach of Tilapia. The phytoplankton genus found in the water and stomach of Tilapia are Microspora sp., Oedogonium sp. and Oscillatorisa sp., while Chlamydomonas sp., Cryptomonas sp. and Anabaenopsis sp. found only in Water. The highest percentage of phytoplankton in the water is Cyanophyta (66.1%), while the highest in the stomach is Bacillariophyta (45.7%). Aquatic zooplankton was found in 3 phyla, namely Arthropoda, Rotifera and Sarcodina consisting of 10 genera, while in Nila's stomach only 2 phyla were found, namely Arthropoda, Rotifera consisting of 9 genera. The highest zooplankton phylum in water and in the stomach is Arthropoda. Based on the results of the abundance of plankton showed that the Selorejo Reservoir is eutrophic waters. The percentage of phytoplankton in the waters is 96% and zooplankton is 4%, while in the stomach, phytoplankton is 99% and zooplankton is only 1%. Tilapia eat most of the plankton present in the waters with a more phytoplankton composition so that including herbivorous fish tend to be omnivorous. The percentage of phytoplankton in water and stomach is higher than zooplankton. The water quality of the Selorejo Reservoir is in accordance with the Class 3 water quality standards, PP. 22 of 2021, thus an effort is needed so that the water quality of the Selorejo Reservoir can still be used for Tilapia fisheries.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0521080103 |
| Subjects: | 300 Social sciences > 333 Economics of land and energy > 333.9 Other natural resources > 333.95 Biological resources > 333.956 Fishes |
| Divisions: | Fakultas Perikanan dan Ilmu Kelautan > Manajemen Sumberdaya Perairan |
| Depositing User: | Sugeng Moelyono |
| Date Deposited: | 30 Nov 2021 04:00 |
| Last Modified: | 11 Oct 2024 07:44 |
| URI: | http://repository.ub.ac.id/id/eprint/186857 |
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