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Dewi Nugrayani
Jenderal Soedirman University
Agriculture, Biological Sciences & Forestry

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Fenotip Ikan Nilem (Osteochilus hasseltii) Strain Mangut yang Dibudidayakan di Jawa Tengah dan Jawa Barat Taufik Budhi Pramono; Rinaldi Kusnendar; Rudy Wijaya; Dewi Nugrayani; Sri Marnani
Jurnal Perikanan Unram Vol 14 No 2 (2024): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v14i2.767

Abstract

Karakter fenotip merupakan salah satu dasar untuk dilakukan pemijahan selektif. Karakter fenotif ikan nilem strain mangut yang dibudidayakan di beberapa daerah dapat menjadi informasi dasar pengembangan budidayanya. Penelitian ini bertujuan untuk mengetahui perbandingan karakter fenotip kuantitatif dengan morfometrik meristik dan pola pertumbuhan ikan Nilem (Osteochilus hasseltii) strain Mangut yang dibudidayakan di wilayah Jawa Tengah dan Jawa Barat.  Penelitian ini dilakukan dengan metode survey lapang dan laboratorium. Ikan sebanyak 30 ekor diambil secara acak dari Banyumas dan Purbalingga mewakili Jawa Tengah dan Tasikmalaya, Jawa Barat. Hasil penelitian menunjukkan menunjukkan bahwa koefisien keragaman morfometrik Ikan Nilem Mangut berkisar antara 4,93-17,99% (Banyumas), 10,35-21,41% (Purbalingga) dan 9,11-24,12% (Tasikmalaya) sedangkan koefisien keragaman meristik Ikan Nilem Mangut berkisar antara 6,89-13,02% (Banyumas), 6,05-9,32% (Purbalingga) dan 5,78-10,78% (Tasikmalaya). Karakter morfometrik dan meristik Ikan Nilem Mangut dari beberapa lokasi memiliki korelasi positif (memiliki hubungan yang searah antar karakter) dan negatif (memiliki hubungan yang berlawanan antar karakter). Berdasarkan hubungan panjang dan berat, ikan Nilem Mangut di Banyumas, Purbalingga dan Tasikmalaya memiliki nilai b berturut-turut yaitu 6,02, 5,42 dan 3,39 menunjukkan pola pertumbuhan allometrik positif. Faktor Kondisi pada ikan nilem mangut memiliki nilai kisaran 1,32-1,34. Tasikmalaya memiliki pola budidaya ikan yang paling baik.
ANALYSIS OF SEDIMENT TEXTURE AND ORGANIC CARBON CONTENT ON MACROZOOBENTHOS ABUNDANCE IN THE MANGROVE AREA OF KARANGTALUN NORTH CILACAP Dewi Wisudyanti Budi Hastuti; Riviani Riviani; Anandita Ekasanti; Emyliana Listiowati; Dewi Nugrayani; Ririn Dwi Avrila; Davy Ananda Catur Wibowo
Jurnal Perikanan Unram Vol 14 No 4 (2024): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v14i4.1268

Abstract

Mangrove forests have an important role in reducing the impact of global warming as a place to absorb carbon dioxide (CO2) from the atmosphere which is mostly stored in sediment. Mangroves are a good habitat for aquatic biota such as macrozoobenthos. Macrozoobenthos are organisms that inhabit the bottom of sea waters and also exist in stable sediments. The aim of this research is to determine sediment texture, sediment organic carbon content, macrozoobenthos abundance and the relationship between sediment type and macrozoobenthos abundance. The method used in sampling was purposive sampling with a total of 3 stations. Sediment samples were taken using a core sampler at depths of 0-10 cm, 10-20 cm and 20-30 cm, while macrozoobenthos samples were taken using the hand sorting method. Organic carbon content was analyzed using the Loss on Ignition (LOI) method. The research results showed that the macrozoobenthos community structure at all stations produced low diversity and dominance indices and high uniformity indices.   The type of sediment texture in the research area shows an average value of the sediment fraction of 4.43% sand, 71.11% dust and 24.45% clay. The highest organic carbon content was found at stations near brackish water areas with an average of 12.06%, while stations near factory areas had the lowest content at 5.89%. There is a strong relationship between the type of sediment texture and the abundance of macrozoobenthos in the Karangtalun mangrove area, North Cilacap.
Co-Authors Anandita Ekasanti Davy Ananda Catur Wibowo Dewi Wisudyanti Budi Hastuti Emyliana Listiowati, Emyliana Rinaldi Kusnendar Ririn Dwi Avrila Riviani Riviani Sri Marnani Taufik Budhi Pramono Wijaya, Rudy