Seasonal Abundance and Spatial Distribution of the Leafminer,<i>Liriomyza trifolii</i>(Diptera: Agromyzidae), and its Parasitoid,<i>Opius dissitus</i>(Hymenoptera: Braconidae), on Bean in Southern Florida

Li, Jian; Seal, Dakshina R.; Leibee, Gary L.; Liburd, Oscar E.

doi:10.1653/024.095.0120

Cited by 9 publications

(6 citation statements)

References 22 publications

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“…Abundance of and parasitism by this parasitoid followed similar trend to that observed for P. scabriventris, with a higher parasitism rate at low-elevation compared with mid-and high-elevations. This observation fits the findings of Bordat et al (1995), who predicted that O. dissitus would perform better between 20 and 25 C. However, Li et al (2012) reported higher performance of O. dissitus in South Florida during cooler conditions of temperature between 15 and 20 C, like that of P. scabriventris. According to Foba et al (2015), leafminers are more abundant at high than lower elevations, and we expected that the parasitoid would be more abundant at high-elevation.…”

Section: Discussionsupporting

confidence: 88%

LiriomyzaLeafminer (Diptera: Agromyzidae) Parasitoid Complex in Different Agroecological Zones, Seasons, and Host Plants in Kenya

Foba¹,

Salifu²,

Lagat³

et al. 2015

Environ Entomol

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Liriomyza leafminers (Diptera: Agromyzidae) are severe pests of vegetables and ornamentals worldwide. Previous studies revealed low leafminer parasitism across different agroecological zones in Kenya. The present paper reports on the composition of leafminer parasitoids at different elevations, in different seasons, and on different host crops. Surveys were conducted monthly from January to November 2012, and nine parasitoid species were recovered. Total mean parasitism in the study sites was 31.23 ± 1.03% from a total of 20 different vegetable Liriomyza-infested crops belonging to seven families. Diglyphus isaea (Walker) (Hymenoptera: Eulophidae), Phaedrotoma scabriventris, a newly released parasitoid, and Opius dissitus Muesebeck (Hymenoptera: Braconidae) were the most abundant at all elevations, accounting for 67.3, 18.6, and 9.2% of total parasitoids, respectively. Elevation, season, and host crop significantly affected the parasitoid species present and their abundance. Diglyphus isaea was more abundant at the high- and mid-elevations at all seasons compared with the low-elevation, whereas the lower-elevation favored higher abundance of P. scabriventris and O. dissitus during the long rainy season compared with the high- and mid-elevations at all seasons. Of all the host crops surveyed, parasitoids were more abundant on tomato, local kidney bean, snow pea and French bean than other crops. The total parasitism rate observed in this study suggests a considerable improvement in leafminer parasitism compared with previous surveys in Kenya. The implications of these findings for leafminer management in vegetable and ornamental production in Kenya are discussed.

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Section: Discussionsupporting

confidence: 88%

LiriomyzaLeafminer (Diptera: Agromyzidae) Parasitoid Complex in Different Agroecological Zones, Seasons, and Host Plants in Kenya

Foba¹,

Salifu²,

Lagat³

et al. 2015

Environ Entomol

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“…Our model suggests that stability at this range of reduction can be obtained by considering aggregated attacks, as in the Beddington et al model [66]. Aggregated attacks have been documented repeatedly in parasitoids, with values of k ranging from 0.5 to 1.6 [48], [67], [68], [69], [70]. Indeed, successful biological control has been achieved with highly aggregating species such as Cyzenis albicans and Anagrus spp [67], [68], [71]…”

Section: Discussionmentioning

confidence: 66%

Host-Parasitoid Dynamics and the Success of Biological Control When Parasitoids Are Prone to Allee Effects

Bompard

Amat²,

Fauvergue³

et al. 2013

PLoS ONE

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In sexual organisms, low population density can result in mating failures and subsequently yields a low population growth rate and high chance of extinction. For species that are in tight interaction, as in host-parasitoid systems, population dynamics are primarily constrained by demographic interdependences, so that mating failures may have much more intricate consequences. Our main objective is to study the demographic consequences of parasitoid mating failures at low density and its consequences on the success of biological control. For this, we developed a deterministic host-parasitoid model with a mate-finding Allee effect, allowing to tackle interactions between the Allee effect and key determinants of host-parasitoid demography such as the distribution of parasitoid attacks and host competition. Our study shows that parasitoid mating failures at low density result in an extinction threshold and increase the domain of parasitoid deterministic extinction. When proned to mate finding difficulties, parasitoids with cyclic dynamics or low searching efficiency go extinct; parasitoids with high searching efficiency may either persist or go extinct, depending on host intraspecific competition. We show that parasitoids suitable as biocontrol agents for their ability to reduce host populations are particularly likely to suffer from mate-finding Allee effects. This study highlights novel perspectives for understanding of the dynamics observed in natural host-parasitoid systems and improving the success of parasitoid introductions.

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“…Field studies of Opius dissitus Muesebeck and L. trifolii in Florida on P. vulgaris showed a direct density‐dependent relationship between parasitism by O. dissitus and density of L. trifolii (Li et al . ). O. scabriventris Nixon has been imported to Kenya where it did not impact native populations of O. dissitus (Foba et al .…”

Section: Parasitoid Species In Australia Likely To Attack Liriomyza Smentioning

confidence: 97%

Potential for biological control of the vegetable leafminer, Liriomyza sativae (Diptera: Agromyzidae), in Australia with parasitoid wasps

Ridland

Umina

Pirtle³

et al. 2020

Austral Entomology

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The vegetable leafminer, Liriomyza sativae Blanchard, poses a risk to vegetable and nursery production in mainland Australia since established in Cape York in 2015. Effective control overseas depends on maximising the impact of natural enemies. Problems with polyphagous Liriomyza pest species typically result from the destruction of their parasitoids by excessive use of non‐selective insecticides. Field studies are reviewed to identify parasitoid species involved in the biological control of L. sativae in open‐air and glasshouse production internationally and to assess the current knowledge of parasitoids of agromyzids in Australia. Overseas, invading Liriomyza populations have frequently been exploited by endemic parasitoids (often found on non‐pest agromyzid species), and non‐crop hosts have played a role as reservoirs of these parasitoids. The few published Australian field studies on the occurrence of agromyzid flies and their parasitoids show a large community of wasps attacking agromyzids, with species mainly from the Eulophidae, Pteromalidae and Braconidae. The most abundant recorded species are two cosmopolitan eulophid species, Hemiptarsenus varicornis (Girault) and Diglyphus isaea (Walker), and four Australian species: two eulophid species, Zagrammosoma latilineatum Ubaidillah and Closterocerus mirabilis Edwards & La Salle, one pteromalid species, Trigonogastrella sp., and one braconid species, Opius cinerariae Fischer, for which there is little biological information. One deficiency in the known assemblage in Australia is the absence of parasitoids from the Eucoilinae (Hymenoptera: Figitidae), a subfamily with several abundant species attacking agromyzids overseas. The composition and impact of the endemic parasitoid assemblage in Australia on populations of L. sativae needs to be assessed adequately in the field before the importation of additional exotic parasitoid species is contemplated. Overseas, two species, D. isaea and Dacnusa sibirica Telenga, are reared commercially for augmentative biological control, although the relatively high cost of production has restricted their release to protected cropping situations. Knowledge gaps remain locally about the taxonomy, distribution, host range and life cycle of parasitoids, and their potential impact on L. sativae.

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Seasonal Abundance and Spatial Distribution of the Leafminer,Liriomyza trifolii(Diptera: Agromyzidae), and its Parasitoid,Opius dissitus(Hymenoptera: Braconidae), on Bean in Southern Florida

Cited by 9 publications

References 22 publications

LiriomyzaLeafminer (Diptera: Agromyzidae) Parasitoid Complex in Different Agroecological Zones, Seasons, and Host Plants in Kenya

LiriomyzaLeafminer (Diptera: Agromyzidae) Parasitoid Complex in Different Agroecological Zones, Seasons, and Host Plants in Kenya

Host-Parasitoid Dynamics and the Success of Biological Control When Parasitoids Are Prone to Allee Effects

Potential for biological control of the vegetable leafminer, Liriomyza sativae (Diptera: Agromyzidae), in Australia with parasitoid wasps

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