FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2147431093> ?p ?o ?g. }

• W2147431093 abstract "predation, and this occurred at high levels independent of HWA density. Effects of competition among predators were analyzed by a series of tests comparing single predators alone to groups of three conspecifics or heterospecifics. Survival, feeding and reproduction were measured over a 6day period with moderate HWA densities available throughout. Results showed that adults and larvae of each species survived as well alone as with conspecifics or heterospecifics. Larval feeding was additive regardless of the species combination. Adult feeding during the early spring simulation showed that L. nigrinus and H. axyridis had higher feeding rates than that of P. tsugae. In the late spring simulation, H. axyridis had the highest feeding rates followed by L. nigrinus and P. tsugae, which were similar. In terms of reproduction, L. nigrinus had the highest oviposition rates for both the early and late spring simulations. However, although P. tsugae and H. axyridis had very low oviposition rates during early spring, these increased dramatically in late spring. Oviposition was non-additive for L. nigrinus during both environmental simulations, but only during the late spring simulation for H. axyridis. Both L. nigrinus and H. axyridis demonstrated conspecific competitive interference. In contrast, P. tsugae oviposition was additive during both environment simulations. It appears that eggs of L. nigrinus and P. tsugae are not chemically defended, but are preyed upon in the absence of sufficient HWA. Eggs of H. axyridis appear to be chemically defended, but suffer substantial conspecific predation. In terms of predator interactions, the results suggest that these three predator species may be more complementary than competitive. L. nigrinus appears to be an efficient predator in the colder conditions present in the early spring, while P. tsugae feeds more in warmer conditions as in late spring. H. axryridis has the potential to be a significant intraguild competitor, but in these The objective of this study was to evaluate competitive interactions among three exotic predators of the hemlock woolly adelgid (HWA) under simulated natural conditions in the laboratory. Laricobius nigrinus Fender (Coleoptera: Derodontidae) from western Canada and Pseudoscymnus tsugae Sasaji and McClure (Coleoptera: Coccinellidae) from Japan are two specialist predators being released into infested eastern hemlock stands in the United States for classical biological control of HWA (Salom et al. 2001). In addition, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), an imported generalist predator of aphids, is found in increasing numbers in infested hemlock stands (Wallace and Hain 2000). Because these species may occur in the same ecosystem and competitive interactions can decrease the efficacy of biological control (Rosenheim et al. 1993), we examined conspecific and intraguild predation so that release strategies for L. nigrinus and P. tsugae may be optimized. Laboratory studies were conducted using petri dish bioassays containing clipped, infested eastern hemlock twigs held in environmental chambers under two simulated environments corresponding to early and late spring in southwestern Virginia. The susceptibility of the eggs of each predator species to predation by conspecific and heterospecific larvae and adults was tested using no-choice and choice tests at a range of HWA densities. For the assays, the predator eggs were incorporated onto HWA infested foliage in their natural context and a single predator was then introduced for 48 h. The results showed that L. nigrinus eggs were highly susceptible to conspecific predation and intraguild predation by H. axyridis. Likewise, P. tsugae eggs were susceptible to intraguild predation by L. nigrinus and H. axyridis. However, predation of these two species was inversely HWA density dependent, primarily occurring when HWA density was either very low or absent. In contrast, H. axyridis eggs were only susceptible to conspecific" @default.
• W2147431093 created "2016-06-24" @default.
• W2147431093 creator A5020777938 @default.
• W2147431093 creator A5050256234 @default.
• W2147431093 creator A5078421666 @default.
• W2147431093 date "2005-01-01" @default.
• W2147431093 modified "2023-09-27" @default.
• W2147431093 title "Competitive Interactions Among Three Exotic Predators of the Hemlock Woolly Adeglid" @default.
• W2147431093 cites W2066870344 @default.
• W2147431093 cites W2177970100 @default.
• W2147431093 hasPublicationYear "2005" @default.
• W2147431093 type Work @default.
• W2147431093 sameAs 2147431093 @default.
• W2147431093 citedByCount "0" @default.
• W2147431093 crossrefType "journal-article" @default.
• W2147431093 hasAuthorship W2147431093A5020777938 @default.
• W2147431093 hasAuthorship W2147431093A5050256234 @default.
• W2147431093 hasAuthorship W2147431093A5078421666 @default.
• W2147431093 hasConcept C104727253 @default.
• W2147431093 hasConcept C173758957 @default.
• W2147431093 hasConcept C188382862 @default.
• W2147431093 hasConcept C18903297 @default.
• W2147431093 hasConcept C2780549409 @default.
• W2147431093 hasConcept C2780761799 @default.
• W2147431093 hasConcept C86803240 @default.
• W2147431093 hasConcept C90856448 @default.
• W2147431093 hasConcept C91306197 @default.
• W2147431093 hasConcept C96857902 @default.
• W2147431093 hasConceptScore W2147431093C104727253 @default.
• W2147431093 hasConceptScore W2147431093C173758957 @default.
• W2147431093 hasConceptScore W2147431093C188382862 @default.
• W2147431093 hasConceptScore W2147431093C18903297 @default.
• W2147431093 hasConceptScore W2147431093C2780549409 @default.
• W2147431093 hasConceptScore W2147431093C2780761799 @default.
• W2147431093 hasConceptScore W2147431093C86803240 @default.
• W2147431093 hasConceptScore W2147431093C90856448 @default.
• W2147431093 hasConceptScore W2147431093C91306197 @default.
• W2147431093 hasConceptScore W2147431093C96857902 @default.
• W2147431093 hasLocation W21474310931 @default.
• W2147431093 hasOpenAccess W2147431093 @default.
• W2147431093 hasPrimaryLocation W21474310931 @default.
• W2147431093 hasRelatedWork W1969325725 @default.
• W2147431093 hasRelatedWork W1989707227 @default.
• W2147431093 hasRelatedWork W2010721546 @default.
• W2147431093 hasRelatedWork W2021783022 @default.
• W2147431093 hasRelatedWork W2030581095 @default.
• W2147431093 hasRelatedWork W2057037639 @default.
• W2147431093 hasRelatedWork W2093601257 @default.
• W2147431093 hasRelatedWork W2096398748 @default.
• W2147431093 hasRelatedWork W2097933102 @default.
• W2147431093 hasRelatedWork W2133667680 @default.
• W2147431093 hasRelatedWork W2153095156 @default.
• W2147431093 hasRelatedWork W2157530234 @default.
• W2147431093 hasRelatedWork W2170705667 @default.
• W2147431093 hasRelatedWork W2180801232 @default.
• W2147431093 hasRelatedWork W2361431802 @default.
• W2147431093 hasRelatedWork W2374970972 @default.
• W2147431093 hasRelatedWork W2564125993 @default.
• W2147431093 hasRelatedWork W2769178498 @default.
• W2147431093 hasRelatedWork W2900534751 @default.
• W2147431093 hasRelatedWork W3177403570 @default.
• W2147431093 isParatext "false" @default.
• W2147431093 isRetracted "false" @default.
• W2147431093 magId "2147431093" @default.
• W2147431093 workType "article" @default.