Population dynamics of aphid species in Korean seed potato cultivation area over four decades

Abstract

The world's climate is changing. This can affect agricultural insects and the damage they cause by altering their ecology, behavior and habitats. Aphids are emerging as an indicator of climate change, and they are a good model for understanding these environmental changes, especially based on their migratory behavior. In this study, the occurrence of aphids in a seed potato field in Pyeongchang, Korea, was monitored daily using a yellow water pan trap from 1977 to 2017. During these 40 years, the annual migration fluctuations of the aphids were analyzed, with particular focus on four species known to vector potato viruses, Aphis gossypii, Aulacorthum solani, Macrosiphum euphorbiae, and Myzus persicae. It was found that, as time goes by, the start point of spring migration in these aphid species was getting earlier while the peak in autumn migration gradually moved to the winter season. Moreover, the annual total number of collected aphids increased by 3.74 times during the 40 years. Together with a mean annual temperature increase of 1.03°C in Pyeongchang over the past four decades, there is a potential threat of expansion in the distribution of aphid species. Therefore, we carefully hypothesized that this temperature change could influence the aphid's population changes in the Korean peninsula. This information can be used in an integrated aphid management program in seed potato cultivation.

Population Genetic Structure of Aphis gossypii Glover (Hemiptera: Aphididae) in Korea

“…Only holocylic A. gossypii was found in several countries including Korea where harsh winter is common [5]. In Korea, A. gossypii hatches from eggs on its primary host in the beginning of April and reproduces for two to three generations before adults (apterous viviparous females) migrate to secondary hosts from May to June [6,7].…”

Biodiversity in and around Greenhouses: Benefits and Potential Risks for Pest Management

“…Aphids disperse as winged morphs (alates) that are produced as a response to crowding or reduced host-plant quality [32], and those alates can travel long distances by wind. Aphid populations in temperate climates usually show a very clear migration peak in early spring and late autumn [33], and most greenhouse crops become infested by aphids in early spring. In summary, long-distance aerial dispersal is very common for pests like thrips, spider mites, and aphids and may also contribute to the influx of these pests into greenhouses.…”

A framework and case study to systematically identify long‐term insect abundance and diversity datasets

“…Identifying these datasets is challenging, however, because the literature is vast and widely distributed. Datasets documenting long‐term insect population and biodiversity trends are scattered across many scientific disciplines, with much coming from medical entomology (e.g., Shone et al, 2014), agricultural and natural resource sciences (e.g., Kim & Kwon, 2019), and community ecology (e.g., Yukawa et al, 2006), as well as conservation and biodiversity studies (e.g., Bartomeus et al, 2013; Seibold et al, 2019). Due to the diversity of purposes for which long‐term insect data are collected, they are often not described as such by the authors; rather, insect population data may be framed as data on food availability (e.g., Gardarsson & Einarsson, 2008; Hong et al, 2016), disease vectors (e.g., Fairbairn & Culwick, 1950), agricultural pests (e.g., Ouyang et al, 2014), pollinator communities (e.g., Smith‐Ramírez et al, 2014), water quality indicators (e.g., Cooper et al, 2014), and more.…”