한국 친환경농업단지의 왕우렁이 월동 및 분포특성
Distribution Characteristics and Overwintering of Golden apple snails, Pomacea canaliculata (Gastropoda:Ampullariidae) at the Environment-friendly complex in Korea
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BACKGROUND: Recently, the golden apple snail, Pomacea canaliculata has been used as an environmentally-friendly weed-control agent in rice farming. Although effective for this particular style of farming, P. canaliculata can be de-structive to other crops. The objective of this study was to identify overwintering as well as regional and seasonal dis-tribution characteristics of P. canaliculata. Notably, win-ter is typically fatal for P. canaliculata. However, owing to increasing average global temperatures, we assessed the ability of P. canaliculata to survive through uncharacteris-tically warm winters. METHODS AND RESULTS: To examine the distribution and overwintering regions of P. canaliculata, We con-ducted a survey from April 2020 to May 2021 on environ-mentally-friendly rice fields, agricultural waterways, and streams in 23 cities belonging to 8 provinces. In addition, because air temperature may influence the distribution den-sity of P. canaliculata, we analyzed the winter temperature data (http://weather.rda.go.kr). CONCLUSION(S): In 2021, overwintering of P. canal-iculata (1-3 individuals/m2) was observed in the Goheung and Yeongam regions in Jeonnam. Overwintering of P. ca-naliculata was observed in fewer regions in 2021 than in 2020; this fact may be attributed to the lower minimum tem-peratures measured in 2021 (approximately 8℃ lower) than those in 2020. Our results suggest that overwintering occurs as long as overnight temperatures are ≥ -15℃, but can take place if temperatures are as low as -19℃.
Abstract
BACKGROUND: Recently, the golden apple snail, Pomacea canaliculata has been used as an environmentally-friendly weed-control agent in rice farming. Although effective for this particular style of farming, P. canaliculata can be de-structive to other crops. The objective of this study was to identify overwintering as well as regional and seasonal dis-tribution characteristics of P. canaliculata. Notably, win-ter is typically fatal for P. canaliculata. However, owing to increasing average global temperatures, we assessed the ability of P. canaliculata to survive through uncharacteris-tically warm winters. METHODS AND RESULTS: To examine the distribution and overwintering regions of P. canaliculata, We con-ducted a survey from April 2020 to May 2021 on environ-mentally-friendly rice fields, agricultural waterways, and streams in 23 cities belonging to 8 provinces. In addition, because air temperature may influence the distribution den-sity of P. canaliculata, we analyzed the winter temperature data (http://weather.rda.go.kr). CONCLUSION(S): In 2021, overwintering of P. canal-iculata (1-3 individuals/m2) was observed in the Goheung and Yeongam regions in Jeonnam. Overwintering of P. ca-naliculata was observed in fewer regions in 2021 than in 2020; this fact may be attributed to the lower minimum tem-peratures measured in 2021 (approximately 8℃ lower) than those in 2020. Our results suggest that overwintering occurs as long as overnight temperatures are ≥ -15℃, but can take place if temperatures are as low as -19℃.
참고문헌 (23)
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