Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Segoli, Michal; Kishinevsky, Miriam; Rozenberg, Tamir; Hoffmann, Ishai

doi:10.3390/insects11090580

Cited by 15 publications

(9 citation statements)

References 53 publications

(64 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(leafhopper egg parasitoid), parasitoid abundance was higher in the grass compared to the vine habitat. This is consistent with previous studies of parasitoids in Israeli vineyards [ 57 , 58 ]. Importantly, although fewer parasitoids were captured in the vine foliage, in most cases we found no significant interaction between the herbicide treatment and the habitat in affecting parasitoid abundance ( Table 1 ), suggesting that the treatment had a similar effect in both habitats.…”

Section: Discussionsupporting

confidence: 93%

Effect of Weed Management on the Parasitoid Community in Mediterranean Vineyards

Möller

Keasar

Shapira

et al. 2020

Biology

Self Cite

View full text Add to dashboard Cite

Enriching agroecosystems with non-crop vegetation is a popular strategy for conservation biocontrol. In vineyards, the effects of specific seeded or planted cover crops on natural enemies are well-studied, whereas conserving spontaneously developing weeds received less attention. We compared parasitoid communities between matched pairs of vineyard plots in northern Israel, differing in weed management practices: “herbicide”, repeated herbicide applications vs. “ground cover”, maintaining resident weeds and trimming them when needed. Using suction sampling, we assessed the parasitoids’ abundance, richness, and composition during three grape-growing seasons. Ground cover plots had greater parasitoid abundances and cumulative species richness than herbicide-treated plots, possibly because of their higher vegetation cover and richness. Dominant parasitoid species varied in their magnitude and direction of response to weed management. Their responses seem to combine tracking of host distributions with attraction to additional vegetation-provided resources. Parasitoid community composition was mildly yet significantly influenced by weed management, while season, year, and habitat (weeds vs. vine) had stronger effects. Vineyard weeds thus support local biocontrol agents and provide additional previously demonstrated benefits (e.g., soil conservation, lower agrochemical exposure) but might also attract some crop pests. When the benefits outweigh this risk, weed conservation seems a promising step towards more sustainable agricultural management.

show abstract

Section: Discussionsupporting

confidence: 93%

Effect of Weed Management on the Parasitoid Community in Mediterranean Vineyards

Möller

Keasar

Shapira

et al. 2020

Biology

Self Cite

View full text Add to dashboard Cite

show abstract

“…This could be due to the fact that the host is more abundant on maize crops than during off-seasons. Similar variations have been observed on other group of parasitoids [ 22 ].…”

Section: Discussionsupporting

confidence: 89%

Seasonal Variations of Spodoptera frugiperda Host Plant Diversity and Parasitoid Complex in Southern and Central Benin

Winsou

Tepa-Yotto

Thunes

et al. 2022

Insects

View full text Add to dashboard Cite

Fall armyworm (FAW) Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) was recorded for the first time in 2016 attacking maize fields in central and west Africa. Soon after, several other regions and countries have reported the pest in almost the entire sub-Saharan Africa. In the present study, we assumed that (i) a variety of alternative plant species host FAW, especially during maize off-season, (ii) a wide range of local parasitoids have adapted to FAW and (iii) parasitoid species composition and abundance vary across seasons. During a two-year survey (from June 2018 to January 2020), parasitoids and alternative host plants were identified from maize and vegetable production sites, along streams and lowlands, on garbage dumps and old maize fields in southern and partly in the central part of Benin during both maize growing- and off-season. A total of eleven new host plant species were reported for the first time, including Cymbopogon citratus (de Candolle) Stapf (cultivated lemon grass), Bulbostylis coleotricha (A. Richard) Clarke and Pennisetum macrourum von Trinius (wild). The survey revealed seven parasitoid species belonging to four families, namely Platygastridae, Braconidae, Ichneumonidae, and Tachinidae associated with FAW on maize and alternative host plants. The most abundant parasitoid species across seasons was the egg parasitoid Telenomus remus (Nixon) (Hymenoptera: Platygastridae). These findings demonstrate FAW capability to be active during the maize off-season in the selected agro-ecologies and provide baseline information for classical and augmentative biocontrol efforts.

show abstract

“…Parasitoid richness and abundance were highest in natural habitat, higher in the herbaceous vegetation than in the vines, and higher in the vineyard margins than at their center (Figure 2), i.e., vineyard habitats that were close or similar in vegetation to the natural areas were richer in parasitoids. Similar patterns of parasitoid abundance and diversity were observed in previous surveys of vineyards in Israel's Mediterranean region (Shapira et al, 2018), but not in desert vineyards (Segoli et al, 2020). The difference between the natural and the vineyard habitats became more marked in the first 2 days after Indoxacarb application, as parasitoid abundance and richness declined in the vineyards but not in the natural habitat.…”

Section: Discussionsupporting

confidence: 83%

Parasitoid Wasp Community Dynamics in Vineyards Following Insecticide Application

Schindler

Gavish‐Regev

Keasar

2022

Front. Environ. Sci.

View full text Add to dashboard Cite

In order to integrate parasitoid wasps in agroecosystems as biological control agents, we need to understand how insecticides affect the parasitoids in the crops and their surroundings. We investigated the non-target effect of Indoxacarb, an insecticide commonly used against European grapevine moth, on parasitoid wasp communities in vineyards. We focused on characterizing: 1. The dynamics of common wasp species, and 2. Wasp abundance and species richness in the vineyard center, edge, and nearby natural area. Seven vineyards, with neighboring natural areas, were sampled before, and up to 2 weeks after, Indoxacarb applications over 2 years. We expected initial negative effects of spraying in the vineyard with some effect of Indoxacarb drift into the natural habitat, followed by wasp recovery, first in natural areas, then at the vineyard edge and finally in the center. Sticky traps were hung at the vineyard edge and center to evaluate migration into and out of the vineyard. Vacuum sampling was used to obtain parasitoid total abundance and species richness, and the abundances of four common species (43% of the wasps collected). From the vacuum samples we found that total wasp abundance and richness declined after spraying in the vineyards’ margins and center but rose over time in the natural area. Vineyard wasp abundance was restored to pre-spraying levels within 2 weeks. Among the abundant species, Trichogramma sp. and Telenomus sp., which parasitize lepidopteran hosts, declined after spraying, and Trichogramma sp. recovered more quickly than Telenomus sp. Two other abundant species, Lymaenon litoralis and Oligosita sp., did not decline after spraying. In the sticky traps, wasp abundance increased at the vineyard edge but not center after spraying, suggesting that there was migration of wasps at the vineyard edge, into or out of the crop. The results indicate an effect of Indoxacarb on the parasitoid wasp community, particularly on parasitoids of lepidopterans, the target group of Indoxacarb. The results also indicate a potential for recovery of the parasitoid community through migration from neighboring natural vegetation.

show abstract

Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Cited by 15 publications

References 53 publications

Effect of Weed Management on the Parasitoid Community in Mediterranean Vineyards

Effect of Weed Management on the Parasitoid Community in Mediterranean Vineyards

Seasonal Variations of Spodoptera frugiperda Host Plant Diversity and Parasitoid Complex in Southern and Central Benin

Parasitoid Wasp Community Dynamics in Vineyards Following Insecticide Application

Contact Info

Product

Resources

About