Evolutionarily Stable Infection by a Male-Killing Endosymbiont in...

Genetics;  November 1, 2004 ;     700+ words ......large effective population size of the host species and strong selection to evolve resistance...rather than partial resistance in the host species. A diverse array of maternally transmitted...embryos in a wide variety of insect host species (reviewed in HURST and JIGGINS 2000...

A mixed diet improves performance and herbivore resistance of a parasitic...

Ecology;  June 1, 1998 ;     700+ words ......similarly benefit by attacking a mixture of host species. Further, while prior studies have focused...focused on the impacts experienced by host species, with almost no attention to the implications...host individuals, and hence multiple host species, simultaneously. Because ...

The parasitoid Praon volucre (Hymenoptera: Braconidae: Aphidiinae) as a...

European Journal of Entomology;  July 1, 2008 ;     700+ words ......size, development, aphid, Uroleucon ambrosiae...compared on these two aphid species. Twenty nymphs...reared on the two host species were not different...recorded for both host aphid species, but the percentage...the alternative host species U. ambrosiae, ...

Parasite impacts on host communities: plant parasitism in a California...

Ecology;  December 1, 1998 ;     700+ words ......exploiting from several to dozens of host species. Further, it is these generalist parasites...different amounts of harm to particular host species, and because parasite performance can...demonstrate preferences for particular host species (Gibson and Watkinson 1989, Kelly 1990...

ISLAND AND TAXON EFFECTS IN.PARASITISM AND RESISTANCE OF LESSER ANTILLEAN...

Ecology;  July 1, 2000 ;     700+ words ......of three parasitic taxa among avian host species on three islands in the Lesser Antilles...significant island effect) indicated that host species on a particular island are linked in...extent of genetic divergence of the host species by analysis of mitochondrial ATPase...

Aphids with attitude: an army of real-life adolescent clones.

Science News;  July 6, 2002 ;     700+ words ......heroes, most of the world's 4,000 or so aphid species aren't by any stretch of the definition...high throughput, low drama. Yet a few aphid species turn out to be more like killer bees...amounts of essential amino acids. Most aphid species reproduce both sexually and asexually...

Parasitic plant-host interactions: plant performance and indirect effects...

Ecology;  July 1, 1996 ;     700+ words ......community structure of their multiple host species (Dobson and Hudson 1986, van Riper et...al. 1992). Variation in quality among host species provides the possibility of species...parasitism, including active choice of some host species by a foraging parasite (Kelly 1990...

Boffins identify new host of avian influenza

The Hindustan Times;  May 11, 2007 ;     207 words ......Researchers have identified a new host species for avian influenza A virus (H5N1...influenza. The study details new data on host species, prevalence, and temporal and geographical...in Europe. Seven previously unknown host species for H5N1 were identified, including...

Effects of a tapeworm parasite on the competition of Tribolium beetles.

Ecology;  April 1, 1998 ;     700+ words ......competition agree in the prediction that host species with higher fitness costs associated...coexistence or exclusion of two sympatric host species in the absence of any other regulatory...general hypothesis that a more susceptible host species, which shows higher pathogenicity ...

Subtype variation among bacterial endosymbionts of tubeworms (Annelida:...

The Biological Bulletin;  June 1, 2007 ;     700+ words ......occurred at similar frequencies in both host species when sampled together from tubeworm...phylotype. Conversely, when a single host species can occur in multiple habitats--as does...Indeed, co-occurring vestimentiferan host species that share the same bacterial phylotype...

Scientists close in on new aphid threat to soybeans.

M2 Presswire;  May 2, 2002 ;     356 words ......biology, impact and migration of a new aphid species pestering soybean crops in Illinois...there was speculation it belonged to aphid species that infest cotton and melon crops...pest's body that can differentiate one aphid species from another. Stoetzel works at ARS...

Ladybird Coccinella septempunctata (Coleoptera: Coccinellidae) prefers...

European Journal of Entomology;  July 1, 2008 ;     700+ words ......Coleoptera: Coccinellidae) for three aphid species: two essential prey, Acyrthosiphon...not differ in their preference for aphid species. In the tritrophic interaction, in...apterous females of the three selected aphid species were released in a Petri dish followed...

The population dynamics of Brucellosis in the Yellowstone National Park.

Ecology;  June 1, 1996 ;     700+ words ......pathogens that infect more than one host species. This work develops from the earlier...wildlife reserves where wild and domestic host species interact (Dobson and May 1986, Dobson...The transmission of pathogens between host species with different evolutionary histories...

Impatiens capensis (Balsaminaceae) Meerb. is a Necessary Nurse Host for...

The American Midland Naturalist;  January 1, 2005 ;     700+ words ......the relationships they have with their host species is critical. In this study, the host...vary greatly with the identity of the host species (Atsatt and Strong, 1970; Gibson and...individuals are not able to exploit all host species with equal effectiveness and that the...

Instar preference and parasitization of Aphis gossypii and Myzus persicae...

European Journal of Entomology;  January 1, 2004 ;     700+ words ......parasitized nymphs of all instars of both aphid species, but it showed a preference for 1st...instar of M persicae. Nymphs of both aphid species parasitized in the 1st and 2nd instars...mainly concerns preference for different aphid species (Messing & Rabasse, 1995; van Steenis...