Beziehungen zwischen Nahrungsmenge, Körpergewicht und Entwicklungsalter beiGastroidea viridula Deg. (Col. Chrysomelidae)

Renner, Klaus

doi:10.1007/bf02040923

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…Our finding that feeding upon rust‐infected leaves reduced developmental time of only female larvae is difficult to explain because little is known about developmental time of P. versicolora with respect to the sex of larvae . Adult female chrysomelids are known to feed significantly more than male chrysomelids (Renner, 1970). This might also be true for the larvae because pupal weight was significantly higher in females than in males (Fig.…”

Section: Discussionmentioning

confidence: 99%

Herbivores and pathogens on willow: do they affect each other?

Simon

Hilker

2003

Agri and Forest Entomology

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1 Willows often need to cope with attack by both rust fungi and herbivores. We studied whether rust infection on willow affects the herbivore, and vice versa, whether herbivore feeding affects the fungal infection. The system investigated by laboratory bioassays and greenhouse experiments consisted of the willow hybrid Salix Â cuspidata, the rust Melampsora allii-fragilis and the willow leaf beetle Plagiodera versicolora. Effects were studied both on a local scale (rust infection and feeding on the same leaf) and systemically (rust infection and feeding on different, but adjacent leaves). 2 Rust infection was not affected by herbivore feeding on a local scale. Systemically, however, the willow's susceptibility towards rust infection was increased by herbivore feeding, as indicated by a higher number of rust sori on leaves adjacent to feeding-damaged leaves. The herbivore's performance was detrimentally affected by rust infection: increase of mortality (systemically), decrease of larval weight (locally and systemically) and prolonging of developmental time (locally and systemically). 3 Previous rust infection enhanced systemically the willow's susceptibility towards subsequent fungal infection. Previous herbivore feeding on the willow had no effects on the herbivore's developmental time and mortality. However, feeding upon previously feeding-damaged willow leaves significantly reduced larval weight.

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Section: Discussionmentioning

confidence: 99%

Herbivores and pathogens on willow: do they affect each other?

Simon

Hilker

2003

Agri and Forest Entomology

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“…Effectiveness of G. viridula biocontrol depends on the level of food consumption and species abundance. Intensity of herbivory is proportionate to the quality of dock leaves (Renner 1970a) which decreases in the course of growing season with their age (Brooks and Whittaker 1998). Cutting and regrowth thus increases the nutritional value of host plants (Smith and Whittaker 1980a).…”

Section: G Viridula In Dock Biocontrolmentioning

confidence: 99%

Gastrophysa viridula (Coleoptera: Chrysomelidae) and biocontrol of Rumex - a review

Martinková¹,

Honěk²

2004

PLANT SOIL ENVIRON

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Gastrophysa viridula (DeGeer) (Coleoptera: Chrysomelidae) is an oligophagous herbivore which prefers consuming leaves of dock (Rumex spp.) species. Because of its feeding specialization this leaf beetle species is considered a potential biocontrol agent of dock plants. This paper reviews geographic distribution, development, life history, herbivory, and natural enemies of this species. Its potential use as a biocontrol agent will be then evaluated. G. viridula is an important part of the complex of Rumex natural enemies. Its herbivory decreases vigour of Rumex plants but cannot cause their mortality alone. The effect of herbivory is enhanced by other biocontrol agents, particularly the rust Uromyces rumicis (Schum.) (Pucciniaceae). Combined effects of G. viridula and other biocontrol agents increase Rumex mortality and thus contribute to its natural control. A�empts at using G. viridula in control of Reynoutria spp. were still unsuccessful. G. viridula may also become a pest of several Polygonaceae crops.

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“…G. viridula has been recorded as a pest of Begonia (Begoniaceae) (Salisbury & Platoni, 2013) [33] , though, it has been considered an important biocontrol agent of dock weed (Swatonek 1972, Barbattini et al, 1986, Hatcher et al, 1997 [41,5,18] . G. viridula was recorded as an effective biocontrol agent due to its high food consumption efficiency and more abundance which decreases the dock population in growing season (Renner, 1970; Brooks &Whittaker 1998) [30,9] . This is the first record of feeding on D. latifolia, though Engel (1956) [16] has reported about 38 species of ten plant families as occasional or regular hosts, but there was no record of Dalbergia sp.…”

Section: Discussionmentioning

confidence: 99%

Occurrence of new defoliator insect pests on Dalbergia latifolia (Roxb.) in Uttarakhand, India

Kumar,

Rajwar

2023

J. Entomol. Zool. Stud.

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The present study conducted in Uttarakhand, India with aim to examine the insect pests of Dalbergia latifolia. The commonly known as rosewood and naturally not grown in the study area. Rosewood is a significant timber-producing tree species native to South and Southeast Asia and holds economic importance. This species was introduced in Uttarakhand in the year 2010 and again in 2020 another introduction programme was initiated by ICFRE, Dehradun. Though, there was no study on insect pest of D. latifolia at introduced regions of Uttarakhand, India. To assess the status of insect pest in newer growing region, periodic survey was conducted and insect pests were observed infesting D. latifolia at nurseries and plantations. Total six insect pests were recorded in this study, out of which five insect species viz. Gastrophysa viridula, Chrysochus cobaltinus, Apoderus crenatus, Ectropis bhurmitra, and Hyposidra talaca were recorded for the first time, while previously recorded Plecopte rareflexa was also recorded from Uttarakhand. The research also delved into the nature of damage caused by these insect pests and their seasonal occurrence. By understanding the behavior of these insect pests and the patterns of damage they inflict, researchers can develop effective pest management strategies to mitigate any potential economic losses they may cause. Such knowledge is crucial for the introduction of D. latifolia in any newer region and conservation of Dalbergia latifolia in the region.

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Beziehungen zwischen Nahrungsmenge, Körpergewicht und Entwicklungsalter beiGastroidea viridula Deg. (Col. Chrysomelidae)

Cited by 5 publications

References 3 publications

Herbivores and pathogens on willow: do they affect each other?

Herbivores and pathogens on willow: do they affect each other?

Gastrophysa viridula (Coleoptera: Chrysomelidae) and biocontrol of Rumex - a review

Occurrence of new defoliator insect pests on Dalbergia latifolia (Roxb.) in Uttarakhand, India

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