Dwi Rosalina
Marine Engineering Program, Politeknik Kelautan Dan Perikanan Bone, South Sulawesi. Indonesia

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Monitoring Hiu Paus (Rhyncodon typus) di Perairan Pantai Botubarani Kecamatan Kabila Bone Kabupaten Bone Bolango Provinsi Gorontalo Katarina Hesty Rombe; Muchtar Amiluddin; Agus Surachmat; Aswandy Noer; Abdul Rahman; Dwi Rosalina
Jurnal Kelautan Vol 15, No 3: Desember (2022)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v15i3.14021

Abstract

ABSTRACTWhale sharks are often found in locations near the coast or river mouths. The whale shark (Rhincodon typus) is one of three species of whales whose feeding habits are carried out by sucking and filtering (filter feeders). The purpose of this study was to calculate the population and size, determine the presence of wounds and measure some water quality (temperature, pH and salinity). The method used is to use the photo ID method which aims to distinguish between individuals from one another and direct or visual monitoring methods to record the presence of injuries, gender and behavior of whale sharks. A total of 20 individuals have been identified at the time of carrying out the research, 2 of which are new individuals or have never been identified before with an average length of 4 – 6.8 meters (juvenile category). The smallest size is 4 meters while the longest reaches 6.8 meters. All identified individuals were male and had wounds on the fins and tail. The water quality measured was still optimal for the presence of whale sharks (temperature ranged from 28-30 oC; pH 7 and salinity ranged from 28-30 0/00).Keywords: Botubarani Waters, monitoring, population, whale sharksABSTRAKHiu paus sering dijumpai di lokasi dekat pantai atau muara-muara sungai. Hiu paus (Rhincodon typus) merupakan salah satu dari tiga spesies paus yang kebiasaan makannya dilakukan dengan cara menghisap dan menyaring (filter feeder). Tujuan dari penelitian ini untuk menghitung jumlah populasi dan ukuran, mengetahui keberadaan luka-luka dan mengukur beberapa kualitas air (suhu, pH dan salinitas). Metode yang digunakan adalah dengan menggunakan metode photo ID yang bertujuan untuk membedakan antar individu satu dengan yang lainnya dan metode pemantauan secara langsung atau visual untuk mencatat keberadaan luka-luka, jenis kelamin dan perilaku hiu paus. Sebanyak 20 individu yang telah teridentifikasi pada saat melaksanakan penelitian, 2 diantaranya adalah individu baru atau belum pernah teridentifikasi sebelumnya dengan panjang rata-rata yaitu 4 – 6,8 meter (kategori juvenile). Ukuran paling kecil adalah 4 meter sedangkan yang paling panjang mencapai 6,8 meter. Keseluruhan individu yang teridentifikasi berjenis kelamin jantan dan memiliki luka pada bagian sirip dan ekor. Kualitas air yang diukur menunjukkan masih optimal untuk keberadaan hiu paus (suhu berkisar 28-30 oC; pH 7 dan salinitas berkisar 28-30 0/00).Kata kunci: Hiu paus, monitoring, perairan Botubarani, populasi,
Metallothionein (MT) Expression and SEM-EDX Mapping on Cymodocea serrulata Seagrass Dwi Rosalina; Dini Sofarini; Firman Farid Muhsoni; Misbakhul Munir; Ruly Isfatul Khasanah
Jurnal Ilmiah Perikanan dan Kelautan Vol. 14 No. 2 (2022): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v14i2.32531

Abstract

Highlight Research 1. Metallothionein is a protein found in seagrass and functions to bind to heavy metals so as not to damage the seagrass body tissue   Abstract Lead is a very dangerous heavy metal for organisms because it is carcinogenic, can cause mutations, takes a long time to decompose and has unchanging toxicity. This study on the seagrass Cymodocea serrulata aimed to determine the metallothionein expression quantitatively using the Elisa (Enzyme-Linked Immunosorbent Assay) method and describe the surface structure of C. serrulata roots, rhizomes, and leaves that were exposed to lead using SEM and EDX Mapping methods. The results showed that metallothionein was abundant in C. serrulata tissues (leaves>roots>rhizomes) in both South Bangka and Ketawai Island. SEM showed changes in the morphology and cell size of C. serrulata exposed to lead. EDX and Mapping showed the substance elements found in seagrass tissue. Pb was detected in C. serrulata roots (0.22%) and leaves (0.6%) in South Bangka. This indicates that the seagrass plants are able to absorb heavy metals into their body tissues.