No abstract

Abstract. Jarulis, Muslim C, Kamilah SN, Utama AF, Permana D, Sari MM, Prayitno AH, Jannah IM. 2021. DNA barcode of Enggano hill myna, Gracula religiosa enganensis (Aves: Sturnidae) based on mitochondrial DNA cytochrome oxidase subunit I. Biodiversitas 22: 1635-1643. The sharp decline of the Enggano hill myna population due to illegal trading and habitat degradation needs to be our concern to prevent this bird from extinction. Taxonomically, Enggano hill myna is referred to as a sub-species, but this has not been confirmed by genetic data. We have sequenced seventeen Enggano hill myna mitochondrial DNA COI genes to describe their genetic identity (barcode), genetic distances, and phylogeny. DNA genome from seventeen blood samples was isolated with DNeasy® Blood and Tissue Kit Qiagen, while PCR amplification was performed using a pair primers, namely COIGRF (5'-TTCTGATTCTTTGGCCATCC-3') and COIGRR (5'-GTTGGAAGGCTTTGCGTTTA-3'). We used Clustal W alignment in MEGA 10.2.2 software to search single nucleotide polymorphisms. Genetic distance was analyzed by using the Kimura 2-parameter, and the phylogenetic tree was reconstructed with Neighbor-Joining models. We found 98.60% conservative sites, 0.69% parsimony sites, and 0.83% singleton sites from the 716 bp sequence. The highest nucleotide composition was cytosine (32.20%), and the lowest was guanine (16.80%), followed by 49% GC content. Seven SNP sites were found in 716 bp COI gene sequences of seventeen individuals. The genetic distance between Enggano hill myna individuals was ranged from 0.0-0.8%, and all Enggano hill myna individuals separated from Chinese and Indian populations in the phylogenetic tree with a genetic distance of 0.9% and 1.1%. Our data suggest that the Enggano hill myna population is still classified as a sub-species. The COI gene sequences that we found can be used to quickly identify this species and are also important to prevent illegal trading in Indonesia.

Morphometry is a method of measurement, calculation, or assessment, the morphological characteristics can be described to understand the deferentiation of various species and species variations. This study aims to determine the variation of head and face morphom etry in Balinese tribes in Suro Bali Village, Ujan Mas District, Kepahiang Regency, Bengkulu Province. This research was conducted in January 2020 in Suro Bali Village, Ujan Mas district, Kepahiang Regency, Bengkulu Province. Samples were taken by purposive sampling and analyzed descriptively. The results showed that of 76 respondents consisting of 33 males and 43 females, it was found that the largest male had a medium head width category, head length category length, face length category length, face width category height, brachycephalic head type and type hyperleptoprosop face. While women have wide head width categories, medium head length categories, medium category face lengths, medium category face widths, hyperbrachycephalic head types and mesoprosop face types.

Background: In the scientific community, there is no consensus that paraquat, a widely used herbicide, has a strong relationship with the occurrence of Parkinson’s disease. A reliable epidemiological explanation of how paraquat can induce parkinsonism is urgently needed because it relates to the agriculture community's potential public health problem. Objective: In this study, mice exposed to aerosols of paraquat solution were assessed by behavioral assays designed to observe whether mice exposed to paraquat aerosols develop cardinal symptoms of Parkinson’s disease, such as tremor-at-rest, bradykinesia, rigidity, and postural instability. Methods: To obtain the intended information, we carried out the observation on distal extremities, catalepsy test, wire suspension test, and swimming test consisting of the head position sub-test, the involvement of limbs sub-test, and the swimming direction test, respectively, to both the group of mice exposed to paraquat aerosols and the one which is not. Results: According to the result of the independent-samples t-test calculation on the data obtained from behavioral assays, a significant difference is shown only by the wire suspension test used to assess the development of forelimb rigidity and not the others. Conclusion: Therefore, this study showed that daily exposure for a week to paraquat aerosols insignificantly causes tremor-at-rest, bradykinesia, and postural instability in studied mice but dramatically affects their forelimb performance in the form of rigidity.