Anindita, Difa Annisa (2018) Variasi Komunitas Plankton Di Daerah Penangkapan Ikan Tongkol (Auxis Richei) Di Perairan Prigi. Sarjana thesis, Universitas Brawijaya.
Abstract
Di perairan Indonesia, keberadaan plankton sangat melimpah dikarenakan mendapatkan intensitas cahaya matahari yang cukup. Plankton dibagi menjadi 2, yaitu fitoplankton dan zooplankton. Fitoplankton diperairan berperan sebagai produsen primer bagi zooplankton. Zooplankton berperan sebagai penghubung antara produsen dengan konsumen tingkat satu, sehingga fitoplankton berpengaruh terhadap rantai makanan. Penelitian ini bertujuan untuk mengetahui komposisi plankton di perairan dan di lambung ikan tongkol, menganalisis hubungan parameter lingkungan dengan kelimpahan plankton di perairan Prigi, serta menganalisis hubungan kelimpahan plankton di perairan dan di lambung ikan tongkol. Waktu dan pelaksanaan penelitian pada bulan Mei – Juni 2018. Metode yang digunakan dalam penelitian yaitu tergantung letak tangkapan ikan. Lalu mengukur parameter lingkungan, pengambilan sampel plankton perairan dan di lambung ikan. Hasil dari penelitian yaitu komposisi fitoplankton di perairan dan di lambung ikan dari kelas Bacillariophyceae yaitu dari genus Chaetocheros. Komposisi zooplankton tertinggi yaitu dari kelas Copepod dari genus Nauplius. Nilai kelimpahan fitoplankton di perairan dari genus Chaetocheros sebesar 55.118.400 sel/m3 dan genus Nauplius zooplankton yaitu sebesar 134 ind/L. Faktor lingkungan yang paling mempengaruhi kelimpahan plankton di perairan Prigi yaitu suhu, pH dan klorofil-a. Ikan tongkol di perairan Prigi lebih memilih fitoplankton sebagai makanan utamanya.
English Abstract
Planktons are microorganisms that have abundant distribution in the tropical water region, including Indonesia. This was because tropical region had high sunlight intensity which led to high distribution of planktons. Primarily, planktons were divided into two major groups; phytoplankton and zooplankton. Phytoplankton acted as the primary producer, while zooplankton acted as the liaison between producers and first-tier consumers. As the primary producer, phytoplankton had a key role within the food chain. This research was aimed to determine the composition of marine plankton in the stomach of tongkol fish, to analyze the correlation of oceanographical parameters and abundance level of plankton in Prigi waters, and to analyze the correlation of abundance level of plankton in the waters and stomach of tongkol fish. The plankton samples were obtained from May-June 2018 in Prigi waters with different methods in each fishing location. The oceanographical parameters were also measured in each location, and the plankton samples were then obtained from the stomach of tongkol fish. The results showed that the most abundance phytoplankton that was found in the waters and stomach of tongkol fish was from class Bacillariophyceae, genus Chaetocheros, while the most abundance zooplankton was from class Copepod; genus Nauplius. The abundance of phytoplankton and zooplankton that were found in the waters from genus Chaetocheros had a total of 55.118.400 cell/m3 and from genus Nauplius had a total of 134 ind/L. Temperature, pH, and Chlorophyll-a had the highest impact on the abundance level of plankton in Prigi waters. Tongkol fish in Prigi waters favored phytoplankton more as their primary source of food.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FPR/2018/990/051900345 |
| Uncontrolled Keywords: | Plankton, Auxis rochei, Kebiasaan makan ikan-Plankton, Auxis richei, fish eating habits |
| Subjects: | 500 Natural sciences and mathematics > 577 Ecology > 577.7 Marine ecology > 577.76 Surface regions |
| Divisions: | Fakultas Perikanan dan Ilmu Kelautan > Pemanfaatan Sumberdaya Perikanan dan Kelautan |
| Depositing User: | soegeng sugeng |
| Date Deposited: | 22 Mar 2019 01:43 |
| Last Modified: | 22 Mar 2019 01:43 |
| URI: | http://repository.ub.ac.id/id/eprint/164355 |
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