Seasonal Migration of Pantala flavescens Across the Bohai Strait in Northern China

2018 ◽  
Vol 47 (2) ◽  
pp. 264-270 ◽  
Author(s):  
Ling-zhen Cao ◽  
Xiao-wei Fu ◽  
Chao-xing Hu ◽  
Kong-ming Wu
Keyword(s):  
Northern China ◽  
Seasonal Migration ◽  
Pantala Flavescens ◽  
Bohai Strait

Seasonal Patterns of Protoschinia scutosa (Lepidoptera: Noctuidae) Migration Across China’s Bohai Strait

2018 ◽  
Vol 47 (4) ◽  
pp. 927-934 ◽  
Author(s):  
Shengyuan Zhao ◽  
Xiaowei Fu ◽  
Jianglong Guo ◽  
Yan Zhou ◽  
Kris A G Wyckhuys ◽  
...  
Keyword(s):  
Agricultural Soils ◽  
Light Trapping ◽  
Northern China ◽  
Seasonal Migration ◽  
Trapping Field ◽  
The Mean ◽  
Trapping Number ◽  
High Level ◽  
Lepidoptera Noctuidae ◽  
Bohai Strait

Abstract The spotted clover moth, Protoschinia scutosa (Denis & Schiffermüller) (Lepidoptera: Noctuidae), is an important polyphagous pest that is widely distributed in the world. P. scutosa overwinters as pupae in agricultural soils in Northern China. Yet, it is unclear whether P. scutosa also engages in seasonal migration over mid- to long-range distances. In this study, we employ light trapping, field surveys, and ovarian dissection of captured adults over a 2003–2015 time period to assess P. scutosa migration in Northern China. Our work shows that P. scutosa migrates across the Bohai Strait seasonally; the mean duration of its windborne migration period was 121.6 d, and the mean trapping number was 1053.6 moths. Nightly catches of P. scutosa were significantly different between months, but the differences between years were not significant. During 2009–2011 and 2013, the monthly proportion of migrating females (65.5%) was significantly higher than that of males and showed no difference between months. In May to June, the majority of females (May: 63.0%; June: 61.1%) were mated individuals with relatively high level of ovarian development; however, in August and September, most females were unmated. The mean proportion of mated females was significantly different across months but did not differ between years. The results of long-term searchlight trapping and ovarian dissection indicate that P. scutosa exhibits a seasonal characteristic of typical population dynamics and reproductive development of migratory insects. Our work sheds light upon key facets of P. scutosa ecology and facilitates the future development of pest forecasting systems and pest management schemes.

Seasonal Migration Patterns of Ostrinia furnacalis (Lepidoptera: Crambidae) Across the Bohai Strait in Northern China

2019 ◽  
Vol 113 (1) ◽  
pp. 194-202
Author(s):  
Xiujing Shen ◽  
Xiaowei Fu ◽  
Yunxin Huang ◽  
Jianglong Guo ◽  
Qiulin Wu ◽  
...  
Keyword(s):  
Seasonal Pattern ◽  
Insect Pest ◽  
Northern China ◽  
Seasonal Migration ◽  
Flight Behavior ◽  
Ostrinia Furnacalis ◽  
Long Distance ◽  
Corn Borer ◽  
June July ◽  
Bohai Strait

Abstract The Asian corn borer (ACB), Ostrinia furnacalis (Guenée), is a notorious polyphagous insect pest in China and other regions of East Asia. The long-distance flight behavior of the ACB moths, however, is not well understood, especially in the field conditions. In this study, nightly monitoring data for multiple years (2003–2017) on the long-distance flight of adults crossing the Bohai Strait in northern China, showed that a large number of the adults frequently flew across the Bohai Strait from May to September with the peak migrations usually occurred, followed in order by September, June, July, and May, and the number of southward migrants was larger than that of northward migrants. From May to September in 2010, 2011, and 2017, a subsample of trapped ACB females was dissected (879 individuals in 2010, 197 individuals in 2011, and 247 individuals in 2017), and the results showed that the sex ratio of the trapped ACB moths was unbiased each month from May to September. While the proportion of mated females in northward populations (May to July = 92.85 ± 4.86%) was significantly higher than that in southward population (August and September = 74.53 ± 8.55%) . The seasonal pattern in the proportion of sexually mature females was similar to the above proportion of mated females. We conclude that the ACBs have a strong propensity and ability for long-distance migration, although local dispersal is generally considered to be the primary movement of the ACB. These findings may be helpful to improve the forecasting systems and the pest management schemes for the ACBs.

scholarly journals Seasonal migration ofCnaphalocrocis medinalis(Lepidoptera: Crambidae) over the Bohai Sea in northern China

2014 ◽  
Vol 104 (5) ◽  
pp. 601-609 ◽  
Author(s):  
X.-W. Fu ◽  
C. Li ◽  
H.-Q. Feng ◽  
Z.-F. Liu ◽  
J.W. Chapman ◽  
...  
Keyword(s):  
Bohai Sea ◽  
Ovarian Development ◽  
Direct Evidence ◽  
Insect Pest ◽  
Management Strategies ◽  
Northern China ◽  
Seasonal Migration ◽  
Cnaphalocrocis Medinalis ◽  
Effective Management ◽  
Leaf Roller

AbstractThe rice leaf roller,Cnaphalocrocis medinalis(Guenée), is a serious insect pest of rice with a strong migratory ability. Previous studies on the migration ofC. medinaliswere mostly carried out in tropical or subtropical regions, however, and what the pattern of seasonal movements this species exhibits in temperate regions (i.e. Northern China, where they cannot overwinter) remains unknown. Here we present data from an 11-year study of this species made by searchlight trapping on Beihuang Island (BH, 38°24′N; 120°55′E) in the centre of the Bohai Strait, which provides direct evidence thatC. medinalisregularly migrates across this sea into northeastern agricultural region of China, and to take advantage of the abundant food resources there during the summer season. There was considerable seasonal variation in number ofC. medinalistrapped on BH, and the migration period during 2003–2013 ranged from 72 to 122 days. Some females trapped in June and July showed a relatively higher proportion of mated and a degree of ovarian development suggesting that the migration of this species is not completely bound by the ‘oogenesis-flight syndrome’. These findings revealed a new route forC. medinalismovements to and from Northeastern China, which will help us develop more effective management strategies against this pest.

Seasonal Migration of Apolygus lucorum (Hemiptera: Miridae) Over the Bohai Sea in Northern China

2014 ◽  
Vol 107 (4) ◽  
pp. 1399-1410 ◽  
Author(s):  
Xiaowei Fu ◽  
Yongqiang Liu ◽  
Chao Li ◽  
Yanhui Lu ◽  
Yunhe Li ◽  
...  
Keyword(s):  
Bohai Sea ◽  
Northern China ◽  
Seasonal Migration ◽  
The Bohai Sea ◽  
Apolygus Lucorum

Seasonal Migration Pattern of Nilaparvata lugens (Hemiptera: Delphacidae) Over the Bohai Sea in Northern China

2018 ◽  
Vol 111 (5) ◽  
pp. 2129-2135 ◽  
Author(s):  
Chaoxing Hu ◽  
Jianglong Guo ◽  
Xiaowei Fu ◽  
Yunxin Huang ◽  
Xiwu Gao ◽  
...  
Keyword(s):  
Bohai Sea ◽  
Northern China ◽  
Nilaparvata Lugens ◽  
Migration Pattern ◽  
Seasonal Migration ◽  
The Bohai Sea

scholarly journals IsHeliothis viriplaca(Lepidoptera: Noctuidae) a long-distance migrant?

2016 ◽  
Vol 106 (6) ◽  
pp. 740-748 ◽  
Author(s):  
X.-Y. Zhao ◽  
X.-W. Fu ◽  
A. Ali ◽  
K. Wilson ◽  
K.-M. Wu
Keyword(s):  
Asian Monsoon ◽  
Ovarian Development ◽  
East Asian Monsoon ◽  
Northern China ◽  
Seasonal Migration ◽  
Small Island ◽  
Long Distance ◽  
Forecasting System ◽  
The Mean ◽  
Lepidoptera Noctuidae

AbstractHeliothis viriplaca(Hüfnagel) (Lepidoptera: Noctuidae) is an important polyphagous pest of beans, cotton, maize, and alfalfa worldwide.H. viriplacais a long-distance migrant, and if so, what pattern of seasonal migration this species exhibits in northern China remains unknown. In this study, in order to determine the seasonal migration ofH. viriplacain northern China, the combination of searchlight trapping and ovarian dissection was carried out on an isolated small island in the center of the Bohai Strait during 2003–2014. The results confirmed thatH. viriplacaundertakes long-distance migration on the prevailing winds of the East Asian monsoon airflows. This species exhibited a regular pattern of seasonal migration across the sea from May to October, but there was considerable yearly and monthly variation in the trapped numbers, with the majority being trapped in summer (67.99 ± 6.54%). The mean period when migration was detectable at the island was 116.5 ± 5.6 days from 2003 to 2014, with the shortest time span of 74 days in 2013 and the longest of 144 days in 2005. Trapped females in May and June showed a relatively higher mating rates and some degree of ovarian development when compared with July, August and September, suggesting the migration of this species is not completely bound by the ‘oogenesis-flight syndrome’. These findings will be helpful to improve the forecasting system and managing strategies ofH. viriplaca.

Seasonal patterns of Scotogramma trifolii Rottemberg (Lepidoptera: Noctuidae) migration across the Bohai Strait in northern China

2018 ◽  
Vol 106 ◽  
pp. 34-41 ◽  
Author(s):  
Limei He ◽  
Xiaowei Fu ◽  
Yunxin Huang ◽  
Xiujing Shen ◽  
Xiaoting Sun ◽  
...  
Keyword(s):  
Northern China ◽  
Seasonal Patterns ◽  
Lepidoptera Noctuidae ◽  
Scotogramma Trifolii ◽  
Bohai Strait

Seasonal Migration of Ctenoplusia agnata (Lepidoptera: Noctuidae) Over the Bohai Sea in Northern China

2014 ◽  
Vol 107 (3) ◽  
pp. 1003-1008 ◽  
Author(s):  
Chao Li ◽  
Xiaowei Fu ◽  
Hongqiang Feng ◽  
Abid Ali ◽  
Chuanren Li ◽  
...  
Keyword(s):  
Bohai Sea ◽  
Northern China ◽  
Seasonal Migration ◽  
The Bohai Sea ◽  
Lepidoptera Noctuidae
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