Results 261 to 270 of about 1,507,173 (305)

Host Suitability for Insect Parasitoids

Annual Review of Entomology, 1980
The parasitic mode of life is very productive and has evolved in numerous orders of arthropods. Many parasitic insects differ from other parasitic organisms in that the adults of parasitic insects are free living, a limited number of progeny develop per host, and the host does not survive the encounter.
S B Vinson, G F Iwantsch
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Is non‐host pollen suitable for generalist bumblebees?

Insect Science, 2016
AbstractCurrent evidence suggests that pollen is both chemically and structurally protected. Despite increasing interest in studying bee–flower networks, the constraints for bee development related to pollen nutritional content, toxicity and digestibility as well as their role in the shaping of bee–flower interactions have been poorly studied.
Vanderplanck, Maryse, Decleves, S., Roger, N., Decroo, C., Caulier, G., Glauser, G., Gerbaux, P., Lognay, Georges, Richel, Aurore, Escaravage, N., Michez, D.   +10 more
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Altitudinal patterns in host suitability for forest insects

Oecologia, 1998
Conspecific trees growing at high and low-elevations encounter different growing conditions and may vary in their suitability as hosts for herbivorous insects. Mountain tree populations may be more resistant to herbivory if low temperatures constrain growth more than they constrain photosynthesis, resulting in increased secondary metabolism ...
Mark C, Erelli, Matthew P, Ayres, Gregory K, Eaton   +2 more
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On suitability of Euclidean embedding of internet hosts

ACM SIGMETRICS Performance Evaluation Review, 2006
In this paper, we investigate the suitability of embedding Internet hosts into a Euclidean space given their pairwise distances (as measured by round-trip time). Using the classical scaling and matrix perturbation theories, we first establish the (sum of the) magnitude of negative eigenvalues of the (doubly-centered,
Sanghwan Lee, Zhi-Li Zhang, Sambit Sahu, Debanjan Saha   +3 more
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Changes in host acceptance and host suitability as an effect of rearing Trichogramma maidis on a factitious host

Entomologia Experimentalis et Applicata, 1989
AbstractHost acceptance and suitability of Ostrinia nubilalis Hbn. for Trichogramma maidis Pint. et Voeg. (Hymenoptera: Trichogrammatidae) were studied, after rearing the parasitoids on O. nubilalis or Ephestia kuehniella Oliv. (Lepidoptera: Pyralidae) for various numbers of generations. In cages, containing two maize plants with in total 30 egg masses
van Bergeijk, K.E., Bigler, F., Kaashoek, N.K., Pak, G.A.   +3 more
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Determining Host Suitability of Pecan for Stored-Product Insects

Journal of Economic Entomology, 2013
A no-choice test was performed to determine survival and reproductive capacity of stored-product insect pests on pecan, Carya illinoensis (Wangenheim) Koch. Insects used were Indianmeal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae); sawtoothed grain beetle, Oryzaephilus surinamensis (L.) (Coleoptera: Cucujidae); red flour beetle ...
A A, Shufran, P G, Mulder, M E, Payton, K A, Shufran   +3 more
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Parasitoid egg shell changes in a suitable and unsuitable host

Journal of Ultrastructure Research, 1974
The egg shell of the braconid, Cardiochiles nigriceps , Viereck consists of two distinct layers: an inner, crystalline, proteinaceous chorion, and microvilluslike projections embedded in an outer fibrous chorion. In a suitable host the fibrous layer and projections are slowly lost during the first 12 hours.
S B, Vinson, J R, Scott
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Comparison of Suitability of Dogs and Cats as Hosts of Echinococcus multilocularis

American Journal of Veterinary Research, 1981
SUMMARY The suitability of dogs and cats as hosts of Echinococcus multilocularis was studied in animals which had each been infected orally with approximately 15,000 protoscolices. Twenty-one days after injection, the mean number of immature worms recovered from 12 dogs was 874.7 and from 12 cats was 101.7.
J R, Crellin, A A, Marchiondo, F L, Andersen   +2 more
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Teratocytes growth pattern reflects host suitability in a host–parasitoid assemblage

Physiological Entomology, 2006
Abstract In some parasitoid species, the serosa membrane breaks apart at hatching and produces teratocyte cells that assume various functions (immunossupression, secretion and nutrition) mediating host–parasitoid relationships. Teratocyte growth pattern may thus reflect the host suitability for a parasitoid. The
ANNABELLE FIRLEJ, ÉRIC LUCAS, DANIEL CODERRE, GUY BOIVIN   +3 more
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Host suitability of Rosa accessions for Pratylenchus penetrans

Nematology, 2002
AbstractA method for screening Rosa accessions for their host suitability to Pratylenchus penetrans was developed. The best conditions were obtained in growth chambers with plants grown in sand, inoculated with 250 P.penetrans per 50 cm3 pot and fertilised weekly with 0.75 g/dm3 soluble fertiliser (containing 20% N, 20% P2O5, 20% K2O and balanced trace
Maurice Moens, Yunliang Peng
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