Molecular analysis of Taro and Bali cattle using cytochrome oxidase subunit I (COI) in Indonesia

Susari NNW, Suastika P, Agustina KK. 2021. Molecular analysis of Taro and Bali cattle using cytochrome oxidase subunit I (COI) in Indonesia. Biodiversitas 22: 165-172. Cytochrome oxidase subunit I (COI) is one of the molecular markers often used as a differentiator with many advantages in phylogeny analysis, and it thus rarely undergoes substitution. This research was conducted to characterize the genetics of Taro and Bali (Bos javanicus) cattle. Blood from the animals was collected from the jugularis vein and amplified by PCR. The target area was COI with a primer that was successfully amplified, namely the forward BICOIF (5'-TTC-TCAACCAACCATAAAGATATTGG-3') and the reverse BICOIR fragment (5'-TAG-ACTTCGGGGTGTCCAAAGAATCA-3'). The PCR products' sequencing was carried out by phylogeny analysis using MEGA 6 software. The amplicon value that succeeded in electrophoresis was 710bp, while six polymorphic sites were obtained at base positions of 1, 300, 379, 675, 676, and 679. The haplotypes (Hap) obtained were 4, with a genetic distance that ranged from 0.000-0.001. The nitrogenous bases of the amino acid composition from the samples showed no significant difference. The phylogenetic tree (Tamura-Nei) classified the cattle into two clades with a genetic distance of 0.0005.

First rearing record and DNA sequence of Chromatomyia aizoon (Hering, 1932) (Diptera: Agromyzidae) associated with Saxifraga paniculata Miller from the Czech Republic

A male of Chromatomyia aizoon (Hering, 1932) (Diptera: Agromyzidae) was reared from a leaf mine at Saxifraga paniculata collected in Štramberk (Northern Moravia, Czech Republic). Partial sequence of the mitochondrial cytochrome oxidase subunit I (COI barcode region, 658 bp) is also provided.

Population genetic structure of Asiatic Hard Clam (Meretrix meretrix) in Thailand based on Cytochrome Oxidase subunit I gene sequence

Supmee V, Sangthong P, Songrak A, Suppapan J. 2020. Population genetic structure of Asiatic Hard Clam (Meretrix meretrix) in Thailand based on Cytochrome Oxidase subunit I gene sequence. Biodiversitas 21: 2702-2709. The Asiatic hard clam (Meretrix meretrix) is an important commercial clam in Thailand. Last decade, this species had a dramatic decrease. Thus, to conserve this species, genetic information is essential. In our study, 135 samples of M. meretrix were collected from 7 sampling sites along the Thailand coast. The genetic structure was examined based on the variation of the nucleotide sequence in cytochrome oxidase subunit I gene. Twenty haplotypes were identified. Numerous rare haplotypes were revealed indicating the existence of a large female effective population size. In the northern Gulf of Thailand population, the genetic diversity was low. The neutrality test and minimum spanning network showed experienced expansion events of M. meretrix in Thailand. The genetic structure showed that the M. meretrix population was separated into the Gulf of Thailand and the Andaman population. This finding was possibly caused by a disruption of gene flow from the Thai-Malay Peninsula and larval behavior. Our finding suggested that the construction management program to maintain the genetic diversity of this species could be separated into 2 conservation units.

Characteristics of Crassostrea Oyster Cytochrome Oxidase Subunit I (Coi) Gene As Species Identity In Delta Cimanuk, West Java

Oysters belong to the Crassostrea, which is a type of shellfish that lives as benthos in waters under the same substrate and environmental conditions will exhibit similar morphological changes in response. There are many types of oysters that have a similar shape are often an obstacle to differentiate of Crassostrea species through morphological identification. The purpose of this research was to identify the types of oysters found in the waters of Delta Cimanuk through analysis of the morphology and nucleotide diversity of Cytochrome Oxidase subunit I (COI) gene, as basic information on proper management and conservation. The morphological identification results show that there were two species of the Crassostrea. Identification of species through the Barcoding DNA technique shows that there is one type of oyster: Crassostrea iredalei with an accuracy of 99.5%.