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Behavior Patterns of Betch Fish (Betta sp.) Towards Different Lamp Light Colors Prilda Rizky Hasibuan; Sri Jayanthi; Siti Rahmawati Sitorus; Rizka Fadillah Br Siregar; Agnes Lidya Syahtari Purba; Silvia Wardania; Ella Fizh Sahrin; Sahna Maulana Sitakar; Gita Prilien Aibekob; Mely Supiani; Dwi Putri Oktaviani Sinabariba
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.6258

Abstract

Betta fish (Betta sp.) is a type of ornamental fish that has unique characteristics compared to other ornamental fish. This research was carried out in November 2023 with the aim of finding out the behavioral patterns of Betta fish when exposed to different types of light. This research used a quantitative method with a (RAL). The results of the research showed that there were changes in behavior in Betta fish (Betta sp.) that had been given different colored lights. The reason why fish are attracted to light is, among other things, because fish have positive phototaxis properties which cause fish to be stimulated and attracted to gather at light sources. In this research, it can be seen that the movement of betta fish moves away from the light source, because the light coming out of the lamp will become hot if it is turned on for too long. If this goes on for a long time, it is feared that the fish will become bored and also experience stress.
Diversity and Abundance of Gastropods in the Coastal Mangrove Ecosystem of Lubuk Damar Village, Aceh Tamiang Regency Gita Prilien Aibekob; Abdul L. Mawardi; Siska Rita Mahyuny
Jurnal Biologi Tropis Vol. 26 No. 4 (2026): in Progress
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i4.11972

Abstract

This study aims to analyze the diversity and abundance of gastropods in the mangrove ecosystem on the coast of Lubuk Damar Village, Seruway District, Aceh Tamiang Regency. Gastropods play an important ecological role as bioindicators of aquatic environmental quality and litter decomposers in the mangrove ecosystem. Sampling was carried out in three different observation locations: residential areas (Area I), fishpond areas (Area II), and coastal areas (Area III) using the quadratic transect method. The results of the study identified 20 species of gastropods belonging to 10 families. The species with the highest abundance was Telescopium telescopium with a total of 817 individuals, while the lowest abundance was Laevistrombus canarium with 6 individuals. The Shannon-Wiener diversity index (H’) showed a moderate category in all three areas, with the highest value in area III (H’=2.65) and the lowest in area I (H’=2.10). The dominance index (C) was low at all locations, indicating the absence of dominance by a single species and a stable community structure. Environmental parameters such as temperature, pH, and salinity were within the range that supports gastropod life. These results indicate that the mangrove ecosystem along the coast of Lubuk Damar Village has a moderate level of gastropod diversity with relatively stable environmental conditions.