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All Journal Jurnal Florea
Bahtiar Arddun Asyafiq
Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Allometrically-Adjusted Morphometric Measurements and Morphological Differentiation Between Two Closely Related Loaches Nemacheilus chrysolaimos and Nemacheilus fasciatus) Bahtiar Arddun Asyafiq; Agung Budiharjo; Puguh Karyanto
Florea : Jurnal Biologi dan Pembelajarannya Vol. 13 No. 2 (2026)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/florea.v13i2.25233

Abstract

This study aims to morphologically distinguish the two closely related loaches, N. chrysolaimos and N. fasciatus using an integrated approach that combines allometrically-adjusted morphometrics measurements, meristic counts, and observable morphological features. Loaches samples were collected from six river systems representing the Progo, Serayu, and Bengawan Solo watersheds in Central Java and the Special Region of Yogyakarta. Morphometric measurements were adjusted using Elliott formulation to reduce allometric bias prior to Principal Component Analysis (PCA). The value of PC1 and PC2 accounting for 42.31%. The results shows that. N. chrysolaimos showed greater caudal peduncle depth and dorsal fin length, whereas N. fasciatus was more strongly associated with dorsal fin height and caudal fin length. Meristic characters provided additional evidence, with the examined specimens of N. chrysolaimos showing higher than N. fasciatus for lateral-line scales (198 vs 156), transverse scale rows (14 vs 10), preorsal scales (57 vs 39), and circumpeduncular scales (27 vs 18), as well as dorsal (10 vs 9) and pecotral (9 vs 7) soft raysi.e. body color pattern, mouth shape and barbel orientation  also distinguished the species. These findings demonstrate that combined morphometric, meristic, and morphological characters provide reliable diagnostic evidence for distinguishing between the two species in Java.
Complete Mitogenomic Analysis of the Javan Ferret-badger (Melogale orientalis): Genomic Features and Phylogenetic Relationships Puguh Karyanto; Berliana Arkanuhaq; Niken Renawati; Bahtiar Arddun Asyafiq; Ahmad Nuruddin Khoiri
Florea : Jurnal Biologi dan Pembelajarannya Vol. 13 No. 2 (2026)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/florea.v13i2.25254

Abstract

This study aims to sequence and characterize the complete mitochondrial genome of the Javan ferret-badger and to contruct its phylogenetic position within the family Mustelidae. The gDNA from the femoral muscle was extracted and subjected to Illumina whole-genome sequencing. The resulting sequence achieved a mean genome sequencing depth of approximately 1,545×. The mitochondrial genome was assembled using SPAdes v3.15.5 and annotated using MitoZ v3.4 and MITOS2. Phylogenetic relationships were analyzed against nine mustelid mitogenomes using Maximum Likelihood analysis under the GTR model with 1,000 bootstrap replicates. The circular mitogenome lenght of M. orientalis is 16,274 bp consisted of 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and a control region. The results showed that the mitogenome is compact with short intergenic spacers, conserved gene overlaps, and an overall GC content of 45.0%. Relative Synonymous Codon Usage analysis indicated an uneven codon distribution, with a general preference for A/T-ending codons. Mitogenomic data were used to examine the phylogenetic position of M. orientalis within Mustelidae. The analysis reveals the phylogeny of M. orientalis within Melogale supports the monophyly of the genus. These findings provide a valuable genomic data for further systematic, phylogeographic, population genetic, and conservation studies.  
Co-Authors Agung Budiharjo Ahmad Nuruddin Khoiri Berliana Arkanuhaq Niken Renawati PUGUH KARYANTO