Host Plant Influence on Movement Patterns and Subsequent Distribution of the Polyphagous Herbivore<i>Lygus rugulipennis</i>(Heteroptera: Miridae)

Hannunen, Salla; Ekbom, Barbara

doi:10.1603/0046-225x-30.3.517

“…However, Fickian diffusion is more adapted for solving theoretical problems, and both are widely used in the ecological modelling literature (see e.g. Shigesada and Kawasaki (1997) for examples of Fickian diffusion, and Hannunen and Ekbom (2001) for an example of Fokker-Planck diffusion).…”

Section: Introductionmentioning

confidence: 99%

Modelling the impact of an invasive insect via reaction-diffusion

Roques

¹

,

Auger‐Rozenberg²,

Roques³

2008

Mathematical Biosciences

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An exotic, specialist seed chalcid, Megastigmus schimitscheki, has been introduced along with its cedar host seeds from Turkey to southeastern France during the early 1990s. It is now expanding in plantations of Atlas Cedar (Cedrus atlantica). We propose a two-dimensional reactiondiffusion model to predict the expansion and impacts of this insect. Two main diffusion operators, of Fokker-Planck and Fickian types, are tested. We show that taking account of the dependence of the insects mobility with respect to spatial heterogeneity, and choosing the appropriate diffusion operator, are critical factors for obtaining good predictions.

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“…In fact, the difference seems to be as great as the difference in movement behavior reported earlier on two different host plant species, wheat and T. inodorum (Hannunen & Ekbom, 2001). In fact, the difference seems to be as great as the difference in movement behavior reported earlier on two different host plant species, wheat and T. inodorum (Hannunen & Ekbom, 2001).…”

Section: Discussionmentioning

confidence: 64%

Within species variation in host plant quality and movement behavior of Lygus rugulipennis nymphs

Hannunen

¹

,

Ekbom

²

2002

Proceedings of the 11th International Symposium on Insect-Plant Relationships

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We studied movement behavior of the polyphagous herbivore Lygus rugulipennis Poppius (Heteroptera: Miridae) on wheat (Triticum aestivum) that had been cultivated in pots using three different levels of nitrogen fertilization. The probability of moving for fourth instar nymphs, and the time spent moving by mobile fourth and fifth instar nymphs increased with the nitrogen fertilization level of the pot. The nitrogen fertilization level of the pot did not appear to influence the probability of moving for fifth instar nymphs. The difference in movement behavior of nymphs on the pots of wheat fertilized with the lowest and the highest nitrogen levels seemed to be as great as the difference in movement behavior reported earlier on two different host plant species, viz., wheat and Tripleurospermum inodorum Schultz. The magnitude of the difference in movement behavior on the extreme nitrogen levels illustrates the importance of recognizing within species variation in plant quality when relating movement patterns of insect herbivores with host plant species.

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“…On the pots of wheat fertilized with the highest nitrogen level the mean probability of moving was 0.88 for fourth instar nymphs and 0.61 for fifth instar nymphs. The maximum time spent moving in 20 min by fifth instar L. rugulipennis nymphs has previously been reported to be about 40 s on T. inodorum and about 200 s on wheat (Hannunen & Ekbom, 2001). On the pots of wheat fertilized with the lowest nitrogen level the mean maximum time spent moving was lower than the earlier reported maximum time on T. inodorum.…”

Section: Discussionmentioning

confidence: 67%

“…In fact, the difference seems to be as great as the difference in movement behavior reported earlier on two different host plant species, wheat and T. inodorum (Hannunen & Ekbom, 2001). Hannunen and Ekbom (2001) observed probability of moving in 20 min by fifth instar L. rugulipennis nymphs to be 0.65 on T. inodorum and 0.71 on wheat. On the pots of wheat fertilized with the lowest nitrogen level the mean probability of moving was 0.41 for fourth instar nymphs and 0.45 for fifth instar nymphs.…”

Section: Discussionmentioning

confidence: 67%

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Within species variation in host plant quality and movement behavior of Lygus rugulipennis nymphs

Hannunen

¹

,

Ekbom

²

2002

Entomologia Exp Applicata

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We studied movement behavior of the polyphagous herbivore Lygus rugulipennis Poppius (Heteroptera: Miridae) on wheat (Triticum aestivum) that had been cultivated in pots using three different levels of nitrogen fertilization. The probability of moving for fourth instar nymphs, and the time spent moving by mobile fourth and fifth instar nymphs increased with the nitrogen fertilization level of the pot. The nitrogen fertilization level of the pot did not appear to influence the probability of moving for fifth instar nymphs. The difference in movement behavior of nymphs on the pots of wheat fertilized with the lowest and the highest nitrogen levels seemed to be as great as the difference in movement behavior reported earlier on two different host plant species, viz., wheat and Tripleurospermum inodorum Schultz. The magnitude of the difference in movement behavior on the extreme nitrogen levels illustrates the importance of recognizing within species variation in plant quality when relating movement patterns of insect herbivores with host plant species.

show abstract

Host Plant Influence on Movement Patterns and Subsequent Distribution of the Polyphagous HerbivoreLygus rugulipennis(Heteroptera: Miridae)

Cited by 18 publications

References 10 publications

Modelling the impact of an invasive insect via reaction-diffusion

Modelling the impact of an invasive insect via reaction-diffusion

Within species variation in host plant quality and movement behavior of Lygus rugulipennis nymphs

Within species variation in host plant quality and movement behavior of Lygus rugulipennis nymphs

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