Seasonal abundance of macropterous Nilaparvata lugens and Sogatella furcifera based on presumptive macroptery in fifth‐instar nymphs

Cook, A. G.; Perfect, Timothy J.

doi:10.1111/j.1365-2311.1985.tb00721.x

Cited by 16 publications

(11 citation statements)

References 6 publications

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“…Previous studies analysed the basic characteristics of migration, overwintering, damage characteristics and reproduction in S. furcifera and N. lugens , as well as environmental and physiological factors influencing these pests (Kisimoto , , ; National Coordinated Research Group of White‐backed Planthoppers ; Cook and Perfect ,b; Riley et al. , ; Denno and Roderick ; Heong et al.…”

Section: Discussionmentioning

confidence: 99%

Ovarian development status and population characteristics of Sogatella furcifera (Horváth) and Nilaparvata lugens (Stål): implications for pest forecasting

Zheng

Yang

et al. 2013

J Applied Entomology

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Migratory behaviour in insects correlates with reproductive development in females, and migration often occurs during the pre‐reproductive stage of adults. The relationship between ovarian development and population status of the white‐backed planthopper Sogatella furcifera (Horváth) and the brown planthopper Nilaparvata lugens (Stål) was evaluated. Females of both species were captured in rice fields and light traps and then dissected in double‐season rice‐farming regions of southern China. The ovarian development of S. furcifera and N. lugens was divided into five levels, following previous studies. The population statuses of both species were examined based on the ovarian development of female adults caught in rice paddies. The ovarian development in N. lugens females caught in light traps mostly ranged from level I to level II, whereas that in S. furcifera females caught in light traps mostly ranged from level I to level III. During peak immigration, ovarian development in N. lugens females was mainly at level II, whereas that in S. furcifera females was mainly at level II and sporadically at level III. During peak emigration, both S. furcifera and N. lugens showed level I ovarian development. The temporal dynamics of ovarian development in light trap catches revealed that (i) significant emigration and partial immigration periods occur in S. furcifera, with ovarian development mainly at level I and sporadically from level II to level III and (ii) numerous immigrants of N. lugens were detected during sedentary and local breeding periods. The temporal dynamics of ovarian development provides more information than does the paddy population. Thus, this study proposes another method for pest forecasting, which is more precise and efficient than conventional forecasting methods such as light trap catching and monitoring population dynamics in rice fields.

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Section: Discussionmentioning

confidence: 99%

Ovarian development status and population characteristics of Sogatella furcifera (Horváth) and Nilaparvata lugens (Stål): implications for pest forecasting

Zheng

Yang

et al. 2013

J Applied Entomology

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“…Cook and Perfect (1985) investigated the relationship between immigration sizes of N. lugens and S. furcifera on population development by comparing water trap catches and population growth over a range of rice habitats where immigration sizes differed within a season. The results show that there is no clear relationship and high peak densities often are associated with the lowest levels of immigration and vice versa.…”

Section: Magnitude Of Immigrationmentioning

confidence: 99%

Rice Planthoppers in the Past Half Century in China

Cheng

2014

Rice Planthoppers

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Historical developments of rice planthopper problems in China, as well as research efforts on these problems, in the past half century are reviewed. Compared with tropical rice ecosystems, population development patterns of rice planthoppers in Chinese rice ecosystems are characterized as multiple planthopper pest species, complex immigration sources, high growth rate, and high outbreak frequency. Historical data on rice planthopper problems reveal that frequent outbreaks of rice planthopper problems in China are mainly the result of vulnerable rice ecosystems associated with susceptible host plant varieties and weak natural regulation in intensive rice ecosystems and subject to variable immigration levels and meteorological conditions. To feed an increasing population in China given the limited arable land available, sustainable intensive rice ecosystems with high natural regulation of planthopper populations need to be established by enhancing the resilience of the system to rice planthoppers, developing international and regional collaboration, and reforming decision-making systems for rice planthopper management.Keywords Brown planthopper · White-backed planthopper · Small brown planthopper · Intensified ecosystems · Sustainable management World population started to increase quickly after the 2nd world war and reached 3 billion in 1960 and 7 billion before the end of 2011, which indicated that the world population has been increasing with a speed of 1 billion per 12-14 years and has more than doubled during the past half century. In China, the population in 1960 was about 0.66 billion, but has reached more than 1.34 billion now, which means the population has doubled in this half century, even where the one child per family policy has been implemented since the 1980s. At the same time, the total arable land in China, which was 136 million ha in early 1950s, is now only around 120 million ha (MOA 2012). How to feed ourselves given an increasing population and a limited and declining area of arable land is a major challenge for the future.

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“…Wing form in planthoppers is heritable and under polygenic control, but can be modified substantially by environmental factors (Denno andRoderick 1990, Denno et al 1991). Of the environmental factors known to affect wing form in planthoppers, population density is clearly the most influential for most species (Fisk et al 1981, Cook and Perfect 1985, Iwanaga et al 1987, Denno and Roderick 1990). For P. dolus (both sexes) and P. marginata (females only), the production of migratory forms is density dependent and is associated with crowded conditions (Denno et al , 1989(Denno et al , 1991.…”

Section: Natural History and Wing Form Determination Inmentioning

confidence: 99%

Density‐Related Dispersal in Planthoppers: Effects of Interspecific Crowding

Denno¹,

Roderick²

1992

Ecology

102

103

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In dense populations, most planthoppers (Homoptera:Delphacidae) produce fully winged migratory forms that can escape to new habitats. Under less crowded conditions, flightless morphs with reduced wings result. For two sympatric species, Prokelisia marginata and Prokelisia dolus, interspecific crowding was found to be as strong a stimulus for the production of migrants as intraspecific crowding. The effects were reciprocal for both species and were demonstrated both in the laboratory and field. However, because migratory forms were triggered at a much lower density in P. marginata than P. dolus, interspecific interactions were asymmetric, with P. dolus having a far greater influence on the wing form of P. marginata. Interspecific interactions did not directly influence survival, development time, or body size, but reproductive capability was indirectly affected because migratory females are less fecund than their flightless counterparts. Intraspecific crowding adversely affected the survivorship, development time, and body size of P. marginata, but had no influence on the fitness of P. dolus. P. marginata is a much more migratory species than P. dolus. Consequently, mobility is associated with the extent that each species' fitness is reduced by intraspecific crowding. Our results demonstrate that for wing dimorphic insects, the effects of interspecific competition can be extended to include altered wing form, a character that directly influences dispersal capability as well as reproductive potential. We suggest that when wing—dimorphic species share a common habitat, interspecific interactions can influence population dynamics by increasing emigration and decreasing population growth.

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Seasonal abundance of macropterous Nilaparvata lugens and Sogatella furcifera based on presumptive macroptery in fifth‐instar nymphs

Cited by 16 publications

References 6 publications

Ovarian development status and population characteristics of Sogatella furcifera (Horváth) and Nilaparvata lugens (Stål): implications for pest forecasting

Ovarian development status and population characteristics of Sogatella furcifera (Horváth) and Nilaparvata lugens (Stål): implications for pest forecasting

Rice Planthoppers in the Past Half Century in China

Density‐Related Dispersal in Planthoppers: Effects of Interspecific Crowding

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