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Namin, Saeed Mohamadzade,Son, Minwoong,Jung, Chuleui The Ecological Society of Korea 2022 Journal of Ecology and Environment Vol.46 No.2
Background: Pollinators are important ecological elements due to their role in the maintenance of ecosystem health, wild plant reproduction, crop production and food security. The pollinator-plant interaction supports the preservation of plant and animal populations and it also improves the yield in pollination dependent crops. Having knowledge about the plant-pollinator interaction is necessary for development of pesticide risk assessment of pollinators and conservation of endangering species. Results: Traditional methods to discover the relatedness of insects and plants are based on tracing the visiting pollinators by field observations as well as palynology. These methods are time-consuming and needs expert taxonomists to identify different groups of pollinators such as insects or identify flowering plants through palynology. With pace of technology, using molecular methods become popular in identification and classification of organisms. DNA metabarcoding, which is the combination of DNA barcoding and high throughput sequencing, can be applied as an alternative method in identification of mixed origin environmental samples such as pollen loads attached to the body of insects and has been used in DNA-based discovery of plant-pollinator relationship. Conclusions: DNA metabarcoding is practical for plant-pollinator studies, however, lack of reference sequence in online databases, taxonomic resolution, universality of primers are the most crucial limitations. Using multiple molecular markers is preferable due to the limitations of developed universal primers, which improves taxa richness and taxonomic resolution of the studied community.
Mohamadzade Namin Saeed,이흥식,손민웅,Jung Chuleui 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.3
Among Korean bumblebees, Bombus ignitus and B. ardens are relatively abundant and important for pollination of wildflowers and agricultural crops. Although the males are easily distinguishable phenotypically, the female castes are difficult to identify from each other. Here we evaluated the value of some morphometric characters in species identification. Also, we developed a polymerase chain reaction followed by restriction fragment length polymorphism (PCR-RFLP) to discriminate these similar species. In spite of statistically significant differences of some morphological characters between two species, overlapping quantitative traits hindered accurate identi fication of the species. However, using 435 bp of COI gene and AluI, BspHI and Earl restriction enzymes allowed molecular identifications of these two species with unique profiles from the digestion by these restriction en zymes. This method can also be applied for older specimens with some morphological characters damaged. We also developed species-specific primers for fast and cost-effective identification of these species.
First Report of the Wax Beetle, Platybolium alvearium Blair (Coleoptera: Tenebrionidae) from Nepal
Saeed Mohamadzade Namin,Ratna Thapa,Bhojraj Mahato,Rituraj Poudyal,Sunil Aryal,Ki-Jeong Hong,Chuleui Jung 한국양봉학회 2020 韓國養蜂學會誌 Vol.35 No.2
Platybolium alvearium is reported for the first time from Nepal. It was found in several localities of the central part of the country. The intraspecific genetic distance of the Cytochrome C oxidase I gene showed 2.7% of genetic distance among samples from Nepal and Vietnam. The phylogenetic relationship between different beetle species associated with honeybees was also discussed.
Saeed Mohamadzade Namin,정철의 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.2
With about 5000 known species, the Vespidae is a large family belongs to order Hymenoptera. The genus Vespa with 22 species is one of the four genera of the subfamily Vespinae. In Korea, 10 species and subspecies are recognized. Because of their social behavior, their treat to human health and their impact in apiculture, the reliable and sometimes automated identification of these insects to species level are important. To test the efficacy of DNA barcoding method for identification of species of the genus Vespa in Korea, 30 samples of eight Korean species of genus Vespa were collected and mitochondrial DNAs of 658 bp fragment cytochrome oxidase subunit 1 (CO1) region were sequenced. A Bayesian Inference based on COI gene of the Korean Vespa species was constructed. The phylogenetic tree shoed that identification of all specimens is possible based on COI gene and we found strong relation between the sequences of the collected species from different localities in South Korea which clustered together with 100% support with sequences of the same species in GenBank. The results demonstrate that DNA barcoding is a useful technique for rapid and accurate species recognition in Korean Vespa species. The DNA barcode part of COI for V. binghami is provided for the first time that can help for identification of this species through DNA barcoding. Also, the genetic diversity among Korean Vespa velutina was zero suggests that the invasion might have occurred in a single event with small number of founders.
Saeed Mohamadzade Namin,고영호,Angelina F. Osabutey,정철의 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.3
The small hive beetle (SHB), Aethina tumida, is native to the Sub-Saharan region of Africa, but it became invasive in many countries after its first introduction to the USA in 1996. The SHB is a destructive pest of the honey industry and can cause damage in apiaries due to feeding on the honey, pollen, honey bee brood and honey fermentation. SHB was recently found infesting honeybee colonies in the South-Eastern part of Korea, Miryang city in 2016. No inference of the origin or the pathway of the invasion into Korea has been made, so far. We analyzed partial cytochrome oxidase I gene of mitochondrial DNA to unveil the possible source of the invasive populations of SHB in South Korea. A Bayesian inference tree and median joining haplotype network revealed a strong relationship between South Korean and North American populations suggesting that the SHB in South Korea came from the USA. Low genetic variation among Korean populations suggests that the invasion might have occurred in a single event with small number of founders. In addition, a new global distributional map of SHB is provided.
Small hive beetle in the Republic of Korea: An invasion from the United States
Saeed Mohamadzade Namin,Youngho Koh,Chuleui Jung 한국응용곤충학회 2019 한국응용곤충학회 학술대회논문집 Vol.2019 No.04
Small hive beetle (Aethina tumida Murray, 1867) (SHB) is one of the important pests of bee keeping industry. This species is endemic in sub-Saharan region of Africa that has recently became an invasive and distributing rapidly throughout the world. Recent detections of SHB in Philippines, Brazil and South Korea indicate that SHB has the potential to become a global pest for apiculture and wild bees. Having enough knowledge about the population source of invasion can help understand the pest ecology and develop the control tactics. SHB has invaded to South Korea in 2017 and cause heavy damage to apiaries in Miryang City, in south-eastern part of Korea and the origin of this pest is still unknown. The aim of this study is to evaluate the phylogenetic position and origin of Korean population of SHB. We sampled the SHB from different bee hives in Miryang city and used 922 bp part of cytochrome oxidase subunit 1 (CO1) region of mitochondrial DNA to compare with all previously reported COI sequences of SHB. The result showed that the population of SHB in south Korea is classified with South Africa, Zimbabwe, Madagascar, Canada, Australia and USA populations in one clade and among them, the lowest genetic distance between South Korean and USA populations indicated that most likely the SHB was imported from the United states to South Korea. No genetic difference has been detected between studied sequences from Korean population indicating that the invasion would had happen in one occasion.