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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences LenteraBio Journal of Degraded and Mining Lands Management Journal of Biology Education Jurnal Riset Biologi dan Aplikasinya Bioed : Jurnal Pendidikan Biologi Indonesian Community Journal Jurnal Pengabdian Masyarakat (Jupemas) Journal of Fisheries & Marine
Rakmawati, Rakmawati
Universitas Lambung Mangkurat, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Integrative Comparative Biology of Two Snakehead Fish (Channa spp.): Biosystematic, Anatomical, and Hematophysiological Evidence from South Kalimantan, Indonesia Rakmawati Rakmawati; Anni Nurliani; Abdul Gafur; Hameda Dhaka Kusuma Taufiq; Najwah Najwah; Suhendra Suhendra
Jurnal Ilmiah Perikanan dan Kelautan Vol. 18 No. 2 (2026): 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.v18i2.87205

Abstract

Graphical Abstract   Highlight Research 1. Morphological profile and morphological variation of Channa striata and Channa micropeltes. 2. Morphometric and Meristic study of Channa striata and Channa micropeltes. 3. Anatomical profile of Channa striata and Channa micropeltes. 4. Physiological profile of Channa striata and Channa micropeltes.   Abstract Kalimantan has two typical types of snakehead fish, namely the Haruan Fish (C. striata) and the Toman Fish (C. micropeltes). This study aims to examine the morphological, anatomical, and physiological profiles of two types of snakehead fish commonly found in Kalimantan. A total of 50 fish samples of each were obtained from local markets in Banjarbaru, South Kalimantan. The methods used included sampling and selection, handling, observation, and dissection of C. striata and C. micropeltes, which included observations of biosystematic, anatomical, and physiological profiles. Biosystematic parameters include observations of morphological variations, morphometric, and meristic profiles, and analysis was carried out using the PCA, calculating the length-weight relationship, and condition factors. For anatomical parameters, dissection was carried out to observe and identify the organs. Organ profiles were analyzed for the relationship between organ weight and total fish weight. T-test was also performed to analyze any significant differences between the two fish species. For physiological parameters, blood was taken to analyze the profile thoroughly, and analyzed using the microhematocrit, Sahli, and Giemsa methods. The results of the biosystematic analysis highlight morphological variation and the relationship between total body length and body weight. There are uniform data range between C. striata and C. micropeltes with the eigenvalue ranges of 84-86%, and the growth pattern is negative allometry. Anatomical parameters revealed a tri-branched gut structure. For the t-test, there is a significant relationship between total organ weight and total body weight in the fish, with the R value was greater than R table value. The hematological profiles highlighted abnormalities due to internal and external factors. Detailed research is needed on the biological profiles of C. striata and C. micropeltes, particularly regarding differences in their profiles based on sex, complete physiological data, and in-depth, comprehensive ecological profile data.
Substrate Preference and Population Structure of Lingulid Shell Species on the North Coast of East Java Rakmawati Rakmawati; Sucipto Hariyanto; Bambang Irawan; Fatmawati Patang; Supanut Pairohakul
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 2 (2026): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.31.2.209-218

Abstract

Lingulid shell (Brachiopoda: Lingulata) is a marine invertebrate that still exists. The mangrove profile on the north coast of East Java shows the potential to become a habitat for lingulid shell. Despite the significant potential, the lack of similar previous data on substrate profiles, population, and species distribution in East Java shows that the presence of lingulid shells has received less attention, suggesting the need for conservative efforts to conserve and sustainable uses of marine resource. Therefore, this study aimed to describe the habitat ecology of lingulid shell on the north coast of East Java based on regency or city, population structure, internal distribution pattern, and substrate profile, as well as identify species distribution. In addition, confirm the lingulid shell species by molecular identification based on cytochrome oxidase subunit I (COI) gene. Sampling was carried out using the purposive sampling method by digging the substrate in the plot area to a depth of 5-10 cm on the north coast of East Java to obtain lingulid frame substrate which was tested based on the fraction (size).  The results showed that lingulid shell could be found in Surabaya City as well as other regencies including Pasuruan, Probolinggo, Situbondo, Bangkalan, Pamekasan, and Sumenep. The discovery results identified the Lingula anatina species based on morphological and molecular characteristics. The population density of lingulid shell in East Java was found to be 52.6 individuals.m-2, while the internal distribution had no continuity. Furthermore, the presence and distribution of Lingula anatina had a preference for silt substrates.
Co-Authors Abdul Gafur Abdul Gafur Ahmad, Mahesa Amalia Khairunnisa, Amalia Anni Nurliani Bambang Irawan Fajar Septyana Fatmawati Patang Hameda Dhaka Kusuma Taufiq Hameda Dhaka Kusuma Taufiq Heri Budi Santoso Hikmah Maulidiyah Lilis Suryandari Lucia Desti Anitasari Mahesa Ahmad Maria Olfa, Maria Mintowati, Evi Kuntorini Muhamat Muhamat Najwah Najwah Nani Kartinah Reni Ambarwati Reni Ambarwati Reni Ambarwati Septyana, Fajar Sucipto Hariyanto Suhendra Suhendra Supanut Pairohakul Suryandari, Lilis Umam, Hairul Utari, Nofi