Predators ofLymantria dispar (Lep. lymantriidae) egg masses: Spatio-temporal variation of their impact during the 1988–89 pest generation in the mamora cork oak forest (Morocco)

Villemant, Claire; Ramzi, Hadjab

doi:10.1007/bf02373731

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…The movement of generalist predators can contribute significantly to the dissemination of pathogens of pests (166,233), and foraging generalists can break up pest aggregations, cause them to drop from plants, and render them more susceptible to parasitism and desiccation (135,139,162,226,234). Generalists can sometimes maintain pests at a new low level once their numbers have been suppressed by introduced parasitoids (184).…”

Section: Additional Negative and Positive Attributes Of Generalist Prmentioning

confidence: 99%

Can Generalist Predators be Effective Biocontrol Agents?

Symondson

Sunderland²,

Greenstone³

2002

Annu. Rev. Entomol.

1,301

951

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Theoretical developments are helping us to comprehend the basic parameters governing the dynamics of the interactions between generalist predators and their many pest and nonpest prey. In practice, however, inter- and intraspecific interactions between generalist predators, and between the predators and their prey, within multispecies systems under the influence of rapidly changing biotic and abiotic variables are difficult to predict. We discuss trade-offs between the relative merits of specialists and generalists that allow both to be effective, and often complementary, under different circumstances. A review of manipulative field studies showed that in approximately 75% of cases, generalist predators, whether single species or species assemblages, reduced pest numbers significantly. Techniques for manipulating predator numbers to enhance pest control at different scales are discussed. We now need to find ways of disentangling the factors influencing positive and negative interactions within natural enemy communities in order to optimize beneficial synergies leading to pest control.

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Section: Additional Negative and Positive Attributes Of Generalist Prmentioning

confidence: 99%

Can Generalist Predators be Effective Biocontrol Agents?

Symondson

Sunderland²,

Greenstone³

2002

Annu. Rev. Entomol.

1,301

951

View full text Add to dashboard Cite

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“…Regional distribution: Northern, Central and Western Morocco, reaching the Sous in the south (Kocher, 1956c;Villemant and Andrei-Ruiz, 1999;Villemant and Fraval, 2002;Arahou, 2008Arahou, , 2010. General distribution: France, Portugal, Spain, Morocco and Algeria (Löbl and Smetana, 2007;Tronquet, 2014;Belhoucine and Bouhraoua, 2015;Bellifa and Rousset, 2021).…”

Section: Dasytes (Anthoxenus) Terminalis Jacquelin Du Val 1863mentioning

confidence: 99%

Checklist of terrestrial beetles (Arthropoda: Insecta: Coleoptera) associated with agroecosystems in North-West Morocco

et al. 2022

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Beetles play an important role in agrosystems as bioindicators of quality, ecology, conservation, and soil characteristics. The Coleoptera of agrosystems in Morocco are poorly known. To contribute to the knowledge of beetles in this country we conducted a survey in a region of North-West Morocco between 2019 and 2020. The inventory was carried out using several types of traps. We identified 54 species belonging to 14 families, 20 subfamilies, and 18 tribes. The most abundant family was Carabidae, with 24 species, and the most dominant subfamily was Harpalinae, with 19 species. This work provides the first checklist of coleopteran fauna associated with agrosystems in North-West Morocco. We provide an identification key of subfamily and tribe, and update information on the distribution of the beetles identified. Checklist dataset published through GBIF (Doi: 10.15470/ohymvn)

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“…Seventeen insect species feed on egg masses in cork oak forests in Morocco causing mortalities between 25% and 90%. The climatic conditions combined with the biological and trophic characteristics of the predators enable them to attack egg masses during the 9‐month egg stage (Villemant and Ramzi ; Villemant and Andrei‐Ruiz ).…”

Section: The Effects Of Natural Enemies On Population Dynamicsmentioning

confidence: 99%

Natural enemies and environmental factors affecting the population dynamics of the gypsy moth

Alalouni

Schädler

Brandl

2013

J Applied Entomology

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The population densities of the gypsy moth (Lymantria dispar; Lepidoptera: Lymantriidae) may reach outbreak levels that pose considerable economic and environmental impacts to forests in Europe, Asia, Africa and North America. Compared with the situation in its native European range feeding damage by gypsy moth is often found to be more severe in North America and other parts of the world. Thus, the release from natural enemies can be interpreted as an important cause for high feeding damages. Natural enemies, especially parasitoids, can cause delayed densitydependent mortality, which may be responsible for population cycles. In North America where only few parasitoids have been introduced and the parasitism rates are considerably lower than in Europe, generalist predators play a larger role than in Europe. Many other factors seem to influence the population dynamics of the gypsy moth such as the host plants and weather. Nevertheless, much of the variability in population densities of the gypsy moth may be attributed to interacting effects of weather conditions and attack by natural enemies. In spite of the considerable number of studies on the ecology and population dynamics of the gypsy moth and the impact of their natural enemies, more quantitative information is required to predict the population dynamics of this pest species and to control its economic and ecologic impact.

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Predators ofLymantria dispar (Lep. lymantriidae) egg masses: Spatio-temporal variation of their impact during the 1988–89 pest generation in the mamora cork oak forest (Morocco)

Cited by 8 publications

References 6 publications

Can Generalist Predators be Effective Biocontrol Agents?

Can Generalist Predators be Effective Biocontrol Agents?

Checklist of terrestrial beetles (Arthropoda: Insecta: Coleoptera) associated with agroecosystems in North-West Morocco

Natural enemies and environmental factors affecting the population dynamics of the gypsy moth

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