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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,520 Documents
 192   193   194   195   196 
Diversity of Soil Insects in The Aiknyet Natural Tourism Area, West Lombok Alhafizin, M.; Ilhamdi, Mohammad Liwa; Wirajagat, Gde Cahyadi
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
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.v25i3.9338

Abstract

Soil insects play a vital role in maintaining forest ecosystem functions, yet their diversity in Indonesian protected areas remains underexplored. This study aims to analyze the diversity, dominance, and evenness of soil insect communities in three habitat zones riparian, forest edge, and forest interior within Aiknyet Natural Tourism Forest, Lombok Barat. A descriptive quantitative approach was used, with data collected via pitfall traps and analyzed using Shannon-Wiener (H'), Simpson (C), and Pielou (E) indices. A total of 4,524 individuals representing 68 species, 31 families, and 9 orders were recorded. The riparian zone showed the highest diversity (H' = 3.41) and evenness (E = 0.83), while the forest interior had the highest dominance (C = 0.17) due to the prevalence of Hypoponera opaciceps. These findings indicate that high individual abundance does not necessarily equate to high biodiversity. The study concludes that habitat heterogeneity strongly influences soil insect community structure. Scientifically, the results highlight the need for habitat-based conservation strategies and support the use of soil insects as ecological indicators in tropical forest management.
Analysis of Cadmium (Cd) Heavy Metals Using Bioindicator Climbing pearch fish (Anabas testudineus) Derived from Rawa Taliwang Lake, West Sumbawa Regency 2025 Zarkasy, M. Rozi; Khairuddin, Khairuddin; Yamin, M.
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9359

Abstract

Fish is one of the aquatic biota that can be used as a bioindicator of river pollution by determining the content of heavy metals in the fish's body. The purpose of this study was to analyze the heavy metal content of cadmium (Cd) from climbing perch fish (Anabas testudineus) derived from Lake Rawa Taliwang, West Sumbawa Regency 2025. This study was conducted from January to March. Sampling was carried out using the purposive sampling method. Samples were taken as many as 2 fish at each station using a gill net. The species of fish taken were climbing pearch fish that were ready to be harvested. Then the samples were analyzed at the NTB Health, Testing and Calibration Laboratory Center. Data analysis was carried out by taking climbing pearch fish meat and then analyzing the heavy metal content in it using the Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) method. The results of the analysis showed that the heavy metal content of cadmium in climbing pearch fish originating from Lake Rawa Taliwang ranged from 0.026 mg/kg (ppm) to 0.035 mg/kg (ppm). These results indicate that the Taliwang swamp lake is polluted by cadmium, but the cadmium content of climbing perch fish is still below the threshold based on the limit set by the Food and Drug Supervisory Agency (BPOM) No. 9 of 2022 concerning the Maximum Limit of Cadmium Heavy Metal Contamination in processed fish, which is 0.30 mg/kg.
Feeding Guild of Birds in Rojolelo Forest Park (TAHURA) Central Bengkulu Susanto, Eki; Riandini, Evelyne; Rivai, Muhammad Prima Putra
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
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.v25i3.9366

Abstract

The composition of bird guilds can provide an overview of the vertical distribution of birds. Rojolelo Forest Park (TAHURA) is a green area that plays a role in maintaining the ecosystem balance for living beings, especially birds. This research aims to determine the composition of bird guilds in Rojolelo Forest Park (TAHURA). The research was conducted in June-July 2023 at several locations, they are TAHURA Lodge, scrubland, and irrigation areas. Data collection was conducted using point counts method.  The research results obtained 21 families, 33 species of birds, and were grouped into 7 types of guilds. The seven types of guilds are insectivores, nectarivores, granivores, omnivores, piscivores, carnivores, and frugivores. The insectivores dominated in guild composition with 17 species.
Vegetable Pesticides and Planting Spattern Againt Grayak Caterpillar (Spodoptera exigua) Attacks on long Beans (Vigna Sinensis L.) Pratama, Yuda Rizky; Idris, M.; Idami, Zahratul
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
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.v25i3.9368

Abstract

: The armyworm (Spodoptera exigua) is one of the most common plant pests that lower plant yields.  The purpose of this study is to ascertain how armyworm (Spodoptera exigua) attacks on long bean plants are impacted by botanical pesticides and planting distance.  This study employs experiments and is quantitative in nature.  In this investigation, papaya leaf trials and garlic peels were used as plant insecticides in covert studies.  The one-way ANOVA test was the statistical method employed in this investigation. The findings demonstrated that while the botanical concentration had no effect on plant height or attack severity, it significantly affected the percentage of attacks and the leaf area index.  Plant height, attack intensity, attack %, and leaf area index were not significantly affected by planting distance in long bean plants.  The study's conclusions include the need for more research on plant insecticides that use plant leaves to fend against attacks, particularly in lowering the incidence of armyworm attacks.
Comparison of Physiological Adaptation and Osmoregulation Survival of Goldfish (Cyprinus carpio) and Nile Tilapia (Oreochromis niloticus) After Exposure to Seawater Merta, I Wayan; Kusmiyati, Kusmiyati
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9389

Abstract

This study aims to: 1) compare the osmoregulatory physiological adaptation and survival of Goldfish (Cyprinus carpio) and Nile tilapia (Oreochromis niloticus) after exposure to seawater. 2) Increase the understanding of animal physiology course material, especially on the topic of osmoregulatory physiology of aquatic animals. Osmoregulation is an essential biological process that allows organisms, including fish, to maintain the balance of water and ions in their bodies. This process is closely related to homeostasis, which is the ability of the body to maintain internal stability despite changes in the external environment. This study uses an experimental design method. The research design involved two different treatment groups, one for goldfish (Cyprinus carpio) and one for Nile tilapia (Oreochromis niloticus), with each treatment replicated ten times. Each fish sample was exposed to seawater by placing it in a plastic bucket containing one liter of seawater. The release of the fish into the treatment medium was done simultaneously. Survival time was observed and recorded from the time the fish was exposed until it died. The breathing rate was observed by counting the opening and closing of the operculum for the first 5 minutes after the treatment for 1 minute, with the counting repeated every 5 minutes for 1 minute until the fish died, and then averaged. The data were analyzed using a t-test at a significance level of 5%. The t-test result showed t_observed = 24.232 > t_table = 2.101 at the 5% significance level with 18 degrees of freedom (df). The significance value (2-tailed Sig.) was 0.000, indicating that the difference between the two groups was highly significant (p < 0.05). This study concluded that Nile tilapia (Oreochromis niloticus) has a longer survival time compared to goldfish (Cyprinus carpio) when placed in seawater. The average survival time of Nile tilapia was 78.3 minutes, significantly longer than goldfish, which only survived for 16.8 minutes.
The Impact of Coal Mining on Ant (Formicidae) Abundance in Rice Field Areas, East Merapi, Lahat Regency, South Sumatra Teristiandi, Novin; Yuliana, Meta
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9393

Abstract

The impact of coal mining pollution on rice fields located near mining areas can affect the health of communities that consume the harvested rice. Ants can serve as bioindicators of environmental pollution. This study aims to investigate the diversity of ants in rice fields located near and far from coal mining areas. The results show differences in ant diversity between rice fields near and far from the coal mining site. Ant species found in the rice field near the mining area included Leptogenys chamela (44 individuals), Solenopsis invicta (4 individuals), and Camponotus texanus (8 individuals). In contrast, in the rice field farther from the mining area, seven species were found: Solenopsis invicta (5 individuals), Myopias emeryi (71 individuals), Tetraponera rufonigra (37 individuals), Paraponera clavata (7 individuals), Leptogenys chamela (5 individuals), Dolichoderus sp. (1 individual), and Camponotus texanus (13 individuals). Ant abundance was higher in the rice field located farther from the coal mining area compared to the one located nearby.
Community Structure of Echinoderms at The Intertidal Zone of Serinting Beach Special Economic Zone of Mandalika Hidayat, Sugih Akbar; Bachtiar, Imam; Suyantri, Eni
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
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.v25i3.9400

Abstract

Serinting Beach, located within the Mandalika Special Economic Zone (SEZ), is an intertidal area with high biological potential for tourism. However, studies on its Echinodermata community remain limited. The existence of this community is crucial as an indicator of coastal ecosystem health and holds potential for developing educational ecotourism, such as reef walking tours. This research aims to analyze the species richness and composition of the Echinodermata community, along with its ecological indices (diversity, evenness, and dominance). Data was collected in March 2025 using the transect-quadrat method, employing three transects perpendicular to the coastline and 15 quadrats, each measuring 2 × 5 m². The study results revealed 21 Echinodermata species, consisting of 10 genera and 9 families from four classes: Asteroidea, Ophiuroidea, Echinoidea, and Holothuroidea. The community composition was dominated by Ophiocoma scolopendrina (43.90%), Echinometra mathaei (21.33%), and Echinometra sp. (16.77%). The diversity index (H') was 1.59; the evenness index (E) was 0.62; and the dominance index (D) was 0.28. Tripneustes gratilla populations were found in low numbers and are suspected to be under pressure due to traditional reef gleaning activities. The findings of this study are expected to serve as a basis for enviromental management and the development of educational tourism, like reef walking tours, in the intertidal zone of the Mandalika SEZ.
Coral Community Structure at The Intertidal Zone of Serinting Beach Special Economic Zone (SEZ) of Mandalika Ainiyawati, Yeni; Bachtiar, Imam; Suyantri, Eni
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
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.v25i3.9401

Abstract

Serinting Beach is located within the Special Economic Zone of Mandalika, where ongoing massive tourism facility development may impact the intertidal coral communities. The intertidal zone of Serinting Beach is also a primary location for reef gleaning, which impacts corals in the intertidal area. Considering that corals are the foundational components of reef ecosystems, the prospective development of this designated super-priority tourism area may exert significant impacts on the intertidal coral communities. This investigation aimed to delineate the coral community structure within the intertidal zone of Serinting Beach, situated in the Mandalika Special Economic Zone (SEZ). Sampling was executed via the transect-quadrat method. Measured variables encompassed coral life forms, genera, families, and the respective colony counts. The study identified 323 coral colonies distributed among 17 genera and 9 families. Compositions of three predominant genera were Heliopora 25.39%, Favites 24.77%, and Porites 22.91%. The Faviidae family exhibited the highest compositional abundance, contributing 37.15%, followed by Helioporidae 25.39% and Poritidae 23.53%. Furthermore, eight distinct coral life forms were documented in the intertidal zone, with massive coral representing the predominant form at 35.60%, followed by coral encrusting 26.01%, and blue coral 25.39%. Ecological indices indicated a moderate level of coral diversity (H'=1.98), accompanied by an unstable evenness index (E=0.70) and a low dominance index (C=0.19).
Influence of Bdellovibrio on Maintenance Media on The Life of Vaname Craws (Litopenaeus vannamei) Infected with Vibrio parahaemolyticus Bacteries Farman, Yudi; Azhar, Fariq; Marzuki, Muhammad
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
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.v25i2.9413

Abstract

Whiteleg shrimp (Litopenaus vannamei) is one of the leading fishery commodities. Whiteleg shrimp cultivation has been widely carried out in Indonesia and has begun to cause various problems such as disease attacks. The type of disease that is often found in whiteleg shrimp cultivation is vibriosis. Vibrio parahaemolyticus bacterial infection is a type of disease that often attacks cultivated shrimp because it has the potential to cause death of up to 80%. The purpose of this study was to analyze the effect of giving Bdellovibrio flour to the maintenance media of whiteleg shrimp infected with Vibrio parahaemolyticus bacteria. This study was experimental by implementing a completely randomized design (CRD). The results of the study showed that giving Bdellovibrio at a dose of 70 ppm in water media was able to increase the immune system of whiteleg shrimp in a challenge test with Vibrio parahaemolyticus bacteria. The THC value obtained was 17.67 x 106 cells/ml, the DHC value in hyaline cells was 61%, granulocyte cells were 36%, semi-granulocyte cells were 18.67%, the AF value was 68.69%, the TBC value was 5.04 x 108 CFU/ml, the TVC value was 1.46 x 107 CFU/ml, the FCR value was 1.28 and the SR value was 77.78%.
Marketing Strategy of Mushroom Baglog in UMKM Agro Jamur Lombok, Gunungsari Sub-District, West Lombok Fadli, Fadli; Jupri, Ahmad; Kuncoro, Zain Bagus; Rozi, Tapaul; Hidayati, Lilik
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9416

Abstract

White oyster mushroom is one of the most widely cultivated mushrooms in Indonesia because it has a high economic value. Umkm Agro Mushroom Lombok is one of the oyster mushroom and mushroom baglog cultivation businesses in West Lombok district. Apart from oyster mushrooms, in Umkm, mushroom baglogs also have a fairly high economic value with the right marketing and marketing strategy. One of the analytical tools that can be used in designing a marketing strategy is SWOT analysis. This analysis is able to identify strengths, weaknesses, opportunities and threats. The method in this study uses descriptive methods with data sources that come from direct sources or primary data and come from other sources or secondary data. The results of the analysis using SWOT show that quality and service are the strengths of Agro Mushroom Lombok, while the lack of promotion and baglogs that are vulnerable to weather are weaknesses, the potential that can be utilized is customer loyalty and a fairly wide market reach. The threats faced are the emergence of new competitors and limited raw materials. The strategies that can be applied are by prioritizing product quality so that the level of customer loyalty increases, besides that it is necessary to intensify promotion through social media to increase market reach.

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