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72 results for “biocontrol agent”
Supplementary material 4 from: Augustinus BA, Lommen STE, Fogliatto S, Vidotto F, Smith T, Horvath D, Bonini M, Gentili RF, Citterio S, Müller-Schärer H, Schaffner U (2020) In-season leaf damage by a biocontrol agent explains reproductive output of an invasive plant species. NeoBiota 55: 117-146. https://doi.org/10.3897/neobiota.55.46874
Figure S1. Mean plant volume ± se of A. artemisiifolia plants measured during the experiment in the four experimental sites
Consistent variations in personality traits and their potential for genetic improvement in the biocontrol agent Trichogramma evanescens - Data table and code for data analysis
<p>We provide data and code needed to re-do the analyses and figures presented in our preprint <em>Consistent variations in personality traits and their potential for genetic improvement in the biocontrol agent </em>Trichogramma evanescens (DOI : 10.1101/2020.08.21.257881 ):</p> <p>- data table : <em>data_repetition01.xls</em>, with informations about each column in the file <em>data_repetition_info.pdf</em></p> <p>- data table : <em>data_individual01.xls</em>, with informations about each column in the file <em>data_indivdual_info.pdf</em></p> <p><em>- </em>The R code used to do the analyses : <em>Rscript-Consistent variations in personality traits and their potential for genetic improvement in the biocontrol agent Trichogramma evanescens.R</em></p> <p><br> </p> <p> </p> <p> </p> <p> </p>
FIGURES 1–6 in A new species of Bithoracochaeta Stein (Diptera: Muscidae) with comments on Mexican species of the genus and their implication as possible biocontrol agents for greenhouses pests
FIGURES 1–6. Bithoracochaeta couriae sp. nov. 1. Male, lateral view of thorax showing setae on anepisternum and katepisternum. 2. Male, sternite 5. 3-6. Male terminalia (Holotype). 3. Cercal plate, surstyli and epandrium, dorsal view. 4. Cercal plate, surstyli and epandrium, left lateral view. 5. Aedeagus, dorsal view. 6. Aedeagus, lateral view. Abbreviations: Aede= aedeagus; Anst= anepisternum; Cept= cercal plate; Epan= epandrium; Pregt= pregonite; Hypa= hypandrium; Ktst= katepisternum; Surs= surstylus.
FIGURES 7–8 in A new species of Bithoracochaeta Stein (Diptera: Muscidae) with comments on Mexican species of the genus and their implication as possible biocontrol agents for greenhouses pests
FIGURES 7–8. Bithoracochaeta couriae sp. nov. 7. Male feeding upside down. 8. Female feeding on Psychodidae.
Herbivory of a biocontrol agent on a native plant causes an indirect trait-mediated non-target effect on a native insect
<p>Identifying food web linkages between biocontrol agents of invasive plants and native species is crucial for predicting indirect non-target effects. Biocontrol insects can integrate into food webs within recipient habitats and influence native insects through apparent competition (altering shared natural enemies) or density-mediated exploitation competition (changing density of native plants). However, whether and how trait-mediated exploitation competition (modifying native plant chemical defenses and volatiles profiles) can produce indirect non-target effects remains largely overlooked, despite plant phenotypic responses to insect herbivory being common and widely documented.</p> <p>The beetle <em>Agasicles hygrophila</em> was introduced into China for management of weedy <em>Alternanthera philoxeroides</em>, but it also attacks the native congener <em>A. sessilis</em>, which may have indirect non-target effects on the native beetle <em>Cassida piperata </em>that also feeds on <em>A. sessilis</em>. Here, we examined the relationships among the abundance of <em>A. hygrophila</em> and <em>C. piperata</em>, and <em>A. sessilis</em> coverage in the field. Then, we investigated the impact of <em>A. hygrophila</em> herbivory on <em>C. piperata</em> development and oviposition, as well as<em> A. sessilis</em> primary metabolites and leaf volatiles.</p> <p><em>Cassida piperata</em> abundance was not related to <em>A. sessilis</em> coverage, but <em>C. piperata</em> was less abundant on plants with more<em> A. hygrophila</em> in the field survey and on plants with more prior<em> A. hygrophila</em> damage in the field cage experiment. <em>Cassida piperata </em>development was inhibited by prior <em>A. hygrophila </em>herbivory in bioassays in enemy-free conditions and they preferred to oviposit on <em>A. sessilis </em>plants that had experienced little or no <em>A. hygrophila</em> damage. <em>Agasicles hygrophila</em> herbivory decreased <em>A. sessilis</em> foliar glucose and protein, and substantially changed its leaf volatile blend.</p> <p>Synthesis. Our results show that <em>A. hygrophila</em> has its major indirect non-target effects on <em>C. piperata </em>through trait-mediated exploitation competition, rather than apparent competition or density-mediated exploitation competition. Our results demonstrate a new mechanism for indirect non-target effects of biocontrol agents. Furthermore, our results indicate that minor and temporary negative impacts on non-target plants might propagate to higher trophic levels and such negative impacts can strengthen with increasing intensity of the direct non-target effect.</p>
FIGURE 1 in A new species of Aculus mite (Acari: Eriophyidae), a potential biocontrol agent for Australian swamp stonecrop, Crassula helmsii (Crassulaceae)
FIGURE 1. Schematic drawings of Aculus crassulae sp. nov. AD. Dorsal view of anterior body region; AL. Lateral view of anterior body region; CG. Female coxigenital region; DPM. Dorsal vew of posterior opisthosoma; em. Empodium; GM. Male genital region; IG. Internal female genitalia; LO. Lateral view of annuli; PM. Lateral view of posterior opisthosoma; ω. Solenidion.
FIGURE 5 in A new species of Aculus mite (Acari: Eriophyidae), a potential biocontrol agent for Australian swamp stonecrop, Crassula helmsii (Crassulaceae)
FIGURE 5. Damage symptoms caused by Aculus crassulae sp. nov. A. Leaf stem of Crassula helmsii showing infected buds and B. Enlarged image of the mites inhabiting a deformed leaf bud. Scale bar = 5 mm -A; 2 mm -B.
FIGURE 2 A–D in A new species of Aculus mite (Acari: Eriophyidae), a potential biocontrol agent for Australian swamp stonecrop, Crassula helmsii (Crassulaceae)
FIGURE 2 A–D. Scanning electron micrographs of Aculus crassulae sp. nov. A. Two mites presented in dorsal view (showing mid-dorsal ridge towards posterior); B. Ventral view of female showing coxigenital region; C. Detailed view of male coxigenital region; D. Detailed view of tarsal empodium.
Fig. 5 in Biocontrol Agents Cross Borders: First Detection of the Knapweed Seed Head Weevil, Bangasternus fausti (Reitter) (Coleoptera: Curculionidae), in Canada
Fig. 5. Maximum-likelihood gene tree of Bangasternus, Rhinocyllus, and Larinus cytochrome c oxidase subunit I sequences. Black circles indicate 100% support with SH-aLRT ratios/ultrafast bootstrapping and gray circles indicate greater than 70% support. Dark red labels depict identified specimens from the William F. Barr Entomological Museum at the University of Idaho.
Figs. 2–4 in Biocontrol Agents Cross Borders: First Detection of the Knapweed Seed Head Weevil, Bangasternus fausti (Reitter) (Coleoptera: Curculionidae), in Canada
Figs. 2–4. Adult Bangasternus fausti (sensu Colonnelli and Whitehead 1990) from British Columbia, Canada. 2) Lateral habitus; 3) Dorsal habitus; 4) Male genitalia, dorsal view. Specimen in Figs. 2–3 from Peachland, British Columbia, Canada (49.739669, −119.769512), collected 27 June 2022 on Centaurea diffusa. Specimen in Fig. 4 from Kelowna, British Columbia, Canada (49.90889, −119.49167), collected 11 June 2022 on C. diffusa (specimen code Bf068). Photos by C. L. Cock.
Fig. 1. Search effort for Bangasternus between 2020–2022 in Biocontrol Agents Cross Borders: First Detection of the Knapweed Seed Head Weevil, Bangasternus fausti (Reitter) (Coleoptera: Curculionidae), in Canada
Fig. 1. Search effort for Bangasternus between 2020–2022. Symbol color represents presence or absence of B. fausti: white depicts presence, green depicts iNaturalist observations, and unfilled depicts absence. White triangles depict sites that had B. fausti and at least two species of Centaurea whereas unfilled triangles depict sites that had no B. fausti but had both C. diffusa and C. stoebe ssp. micranthos. Photo of B. fausti on C. diffusa by N. G. Earley. Figure prepared in QGIS version 3.16.6 with basemaps from https://github.com/stamen/terrain-classic and https://github.com/CartoDB/ basemap-styles.
Figure 1 in Description and biological parameters of Ooencyrtus isabellae Guerrieri and Noyes sp. nov. (Hymenoptera: Chalcidoidea: Encyrtidae), a potential biocontrol agent of Zophiuma butawengi (Heller) (Hemiptera: Fulgoromorpha: Lophopidae) in Papua New Guinea
Figure 1. Ooencyrtus isabellae Guerrieri and Noyes. Female: (A) antenna; (B) base of forewing; (C) mandible; (D) hypopygium; and. (E) ovipositor. Male: (F) antenna; and (G) genitalia.
FIGURE 42 in Acarine biocontrol agents Neoseiulus californicus sensu Athias-Henriot (1977) and N. barkeri Hughes (Mesostigmata: Phytoseiidae) redescribed, their synonymies assessed, and the identity of N. californicus (McGregor) clarified based on examination of types
FIGURE 42. Neoseiulus californicus sensu Athias-Henriot (1977). Variation in the shape of the spermathecae of specimens from: (a, b) slide lot #23 (Table 1); (c, d) lot #22; (e, f) lot #28; (g, h) lot #25; (i, j) lot # 30; (k, l) lot #34; (m–o) lot #35; (p, q) lot #36; (r, s) lot #39; (t, u) lot #37; (v) lot #41; (w) lot #42; (x) lot #45; (y) holotype of N. chilenensis, lot #43 (image is the result of a montage (merging) of photos taken by Diana Goernert, Senckenberg Museum of Natural History Görlitz). All figures at the same scale, shown in (a). Legend: AU—Australia, CA—California (USA), CAN—Canada, CH—Chile, FL— Florida (USA), KE—Kenya, SK—South Korea.
FIGURES 29–35 in Acarine biocontrol agents Neoseiulus californicus sensu Athias-Henriot (1977) and N. barkeri Hughes (Mesostigmata: Phytoseiidae) redescribed, their synonymies assessed, and the identity of N. californicus (McGregor) clarified based on examination of types
FIGURES 29–35. Neoseiulus californicus sensu Athias-Henriot (1977). Male: 29. Dorsal idiosoma (slide lot #26, Table 1); 30. Ventral idiosoma (lot #28); 31. Dorsal and 32. ventrianal shields of a paratype of N. chilenensis (conspecific with specimens of N. californicus sensu Athias-Henriot; lot #43); 33. Sternal shields (lots #25 and 28); 34. Ventrianal shield (lot #26); 35. Chelicerae and spermatodactyls: (a–b) lateral aspect (a: antiaxial, b: paraxial) (c–d) dorsal aspect; specimens from (a–c) lots #40–41 and (d) lot #28. [n.b. Figs 33–35 are at the same scale (shown as 50 µm, between Figs. 33 and 35), but are also at the same scale as Figs 29–30 (scale shown as 100 µm). Figs 31–32 are on the same scale].
FIGURES 19–24 in Acarine biocontrol agents Neoseiulus californicus sensu Athias-Henriot (1977) and N. barkeri Hughes (Mesostigmata: Phytoseiidae) redescribed, their synonymies assessed, and the identity of N. californicus (McGregor) clarified based on examination of types
FIGURES 19–24. Gnathotectum (19, 20) and subcapitulum (21–24). Neoseiulus barkeri: 19, 21. Female, 23. Male (specimens from slide lot #17, Table 1). Neoseiulus californicus sensu Athias-Henriot (1977): 20, 22. Females (from lot #27), 24. Male (lot #28). Legend: dd—deutosternal denticles; im—internal malae; lo—hyaline lobe, present in males only; gt—gnathotectum. All figures at the same scale, shown in Fig. 20.
FIGURES 4–8 in Acarine biocontrol agents Neoseiulus californicus sensu Athias-Henriot (1977) and N. barkeri Hughes (Mesostigmata: Phytoseiidae) redescribed, their synonymies assessed, and the identity of N. californicus (McGregor) clarified based on examination of types
FIGURES 4–8. Males: 4. Chelicerae and spermatodactyls of (a) Neoseiulus californicus holotype; (b) N. barkeri paralectotype (paraxial view); (c) other N. barkeri from Finland (slide lot #16, Table 1); (d) South Korea (dorsal view; slide lot #17). 5–6. Detail of N. barkeri male idiosoma (5) dorsum and (6) venter, based on a specimen from California with similar collection data to that of N. californicus type (slide lot #3, Table 1). 7. Detail of gland opening gv3 (between JV2 setae) on N. barkeri male ventrianal shield region (from slide lot # 15). 8. Detail of N. barkeri gland openings gd4 of (a) paralectotype; (b–e) Finland specimens (slide lot #16, Table 1); (f) South Korea specimens (slide lot #17). [n.b. 8a, c, e present both left and right gd4 of individual males, at different depths, while 8b, d, f present only left gd4; green arrows indicate the point where the gland duct leads deeper into the body. Poroids id5, id2, idm1–6, and idx shown in 5 are based on observations on male from slide lots #15– 17; poroid idm5 is not shown here in 5, being near the posterior edge of the shield, which is curved on the specimen illustrated; poroids ivo, ivp and sigillae in 6 are mostly based on observations on males from slide lots #16 and 17.]
FIGURES 25–28. Neoseiulus barkeri. Legs I–IV in Acarine biocontrol agents Neoseiulus californicus sensu Athias-Henriot (1977) and N. barkeri Hughes (Mesostigmata: Phytoseiidae) redescribed, their synonymies assessed, and the identity of N. californicus (McGregor) clarified based on examination of types
FIGURES 25–28. Neoseiulus barkeri. Legs I–IV, based primarily on the holotype of N. mckenziei (=jun. syn. of N. barkeri; slide lot #9, Table 1). 25–28. includes femora, genua, and tibiae of legs I, II, III, IV, respectively; 28. Basitarsus IV also included. All setae are labelled except dorsals (ad1–2, pd1–2) of genu II–IV to avoid incumbrance.
FIGURES 36–41 in Acarine biocontrol agents Neoseiulus californicus sensu Athias-Henriot (1977) and N. barkeri Hughes (Mesostigmata: Phytoseiidae) redescribed, their synonymies assessed, and the identity of N. californicus (McGregor) clarified based on examination of types
FIGURES 36–41. Neoseiulus californicus sensu Athias-Henriot (1977). Female: 36. Dorsal idiosoma (slide lot #28, Table 1); 37. Ventral idiosoma, metapodal platelets in inset (lot #27); 38–39. Chelicerae (lots #39 and 36); 40. Sternal and 41. ventrianal shields of a paratype of N. chilenensis (= N. californicus sensu Athias-Henriot; lot #43). Legend: MDt—movable digit teeth; pd—pilus dentilis; pr—proximal (paraxial) teeth of fixed digit; su—subapical (antiaxial) teeth of fixed digit.
FIGURE 1 in Acarine biocontrol agents Neoseiulus californicus sensu Athias-Henriot (1977) and N. barkeri Hughes (Mesostigmata: Phytoseiidae) redescribed, their synonymies assessed, and the identity of N. californicus (McGregor) clarified based on examination of types
FIGURE 1. Photographs of the slides of key specimens studied: (a) Holotype of Typhlodromus californicus (male) (verbatim transcription of left label: "Garman says this is prob. a new sp.", "TYPE"; see Table 1, slide lot #1 for info from the right label); (b) Syntypes of T. mungeri (2 females; verbatim transcription of right label: "Garman says this is a n. sp.", "TYPE"; Table 1, lot #2); (c–g) Other specimens from lemon, in southern California (1952–1958) identified by authors as N. barkeri ((c) has a male and female; (d–g) have single females), corresponding to slide lots #3–6, respectively (see Table 1 for label details); (h) A female syntype of N. barkeri Hughes (slide lot #7, Table 1). [n.b. (h) is herein designated as lectotype of N. barkeri (verbatim transcription of left label: "Laelaptidae n. gen.", "Neoseiulus", "type", "barkeri", "sprouting barley", "Barker", "11.5.45"). Slides in (a, b, e–g) were labelled by E.A. McGregor, based on comparison with labels on slides of species that he originally collected and/or described (including types). Slides in (c, d) were most probably labelled by Francis Munger (USDA, Whittier, California), based on comparison with other labels on slides of specimens he collected.]
FIGURES 12–15 in Acarine biocontrol agents Neoseiulus californicus sensu Athias-Henriot (1977) and N. barkeri Hughes (Mesostigmata: Phytoseiidae) redescribed, their synonymies assessed, and the identity of N. californicus (McGregor) clarified based on examination of types
FIGURES 12–15. Neoseiulus barkeri. Female: 12–13. Dorsal and ventral idiosoma of specimen from western Canada (slide lot #12, Table 1); opisthogastric region of specimens from (14) California (lot #5) and (15) New Jersey (N. picketti holotype = jun. syn. of N. barkeri; lot #10). [n.b. green arrows indicate gland openings and poroids of particular interest. All figures at the same scale, shown in 12].
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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