Search Results - "Krasnov, B."

Patterns of diversity and abundance of fleas and mites in the Neotropics: host-related, parasite-related and environment-related factors by LINARDI, P. M., KRASNOV, B. R.

“…The effects of host‐related, parasite‐related and environmental factors on the diversity and abundance of two ectoparasite taxa, fleas (Insecta: Siphonaptera)…”
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Age-Biased Parasitism and Density-Dependent Distribution of Fleas (Siphonaptera) on a Desert Rodent by Hawlena, H., Abramsky, Z., Krasnov, B. R.

“…Parasites often confront conflicting demands when evaluating and distributing themselves among host individuals, in order to attain maximum reproductive…”
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Ectoparasite fitness in auxiliary hosts: phylogenetic distance from a principal host matters by Khokhlova, I. S., Fielden, L. J., Degen, A. A., Krasnov, B. R.

“…We studied reproductive performance in two flea species (Parapulex chephrenis and Xenopsylla ramesis) exploiting either a principal or one of eight auxiliary…”
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Determinants of ectoparasite assemblage structure on rodent hosts from South American marshlands: the effect of host species, locality and season by LARESCHI, M, KRASNOV, B.R

“…The relative effects of host species identity, locality and season on ectoparasite assemblages (relative abundances and species richness) harboured by four…”
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Use it or lose it: reproductive implications of ecological specialization in a haematophagous ectoparasite by ARBIV, A., KHOKHLOVA, I. S., OVADIA, O., NOVOPLANSKY, A., KRASNOV, B. R.

“…Using experimentally induced disruptive selection, we tested two hypotheses regarding the evolution of specialization in parasites. The ‘trade‐off’ hypothesis…”
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Relationships between parasite abundance and the taxonomic distance among a parasite's host species: an example with fleas parasitic on small mammals by Krasnov, B.R., Shenbrot, G.I., Khokhlova, I.S., Poulin, R.

“…Opportunistic parasite species, capable of exploiting several different host species, do not achieve the same abundance on all these hosts. Parasites achieve…”
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Concession policy of the Soviet state: implementation mechanism by Nemytina, Marina V., Krasnov, Alexey B.

“…The article analyzes the experience of the concession policy implementation by the RSFSR and the USSR during the 20s of the twentieth century and the…”
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Is a Starving Host Tastier? Reproduction in Fleas Parasitizing Food-Limited Rodents by Krasnov, B. R., Khokhlova, I. S., Arakelyan, M. S., Degen, A. A.

“…1. We hypothesized that food availability, and therefore body condition, of a rodent host, Meriones crassus, affects egg production and survival, and…”
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The effect of larval density on pre-imaginal development in two species of desert fleas by Khokhlova, I S, Hovhanyan, A, Degen, A Allan, Krasnov, B R

“…We studied the effect of density of larvae on pre-imaginal development in 2 flea species (Xenopsylla conformis and Xenopsylla ramesis) parasitic on 2 desert…”
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Age, intensity of infestation by flea parasites and body mass loss in a rodent host by Hawlena, H, Khokhlova, I S, Abramsky, Z, Krasnov, B R

“…Parasitism by the flea Synosternus cleopatrae does not affect the body mass of its principal rodent host, Gerbillus andersoni under natural infestation levels…”
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Searching for general patterns in parasite ecology: host identity versus environmental influence on gamasid mite assemblages in small mammals by Krasnov, B R, Korallo-Vinarskaya, N P, Vinarski, M V, Shenbrot, G I, Mouillot, D, Poulin, R

“…The abundance and diversity of parasites vary among different populations of host species. In some host-parasite associations, much of the variation seems to…”
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Effect of actual long-term spaceflight on BDNF, TrkB, p75, BAX and BCL-XL genes expression in mouse brain regions by Naumenko, V.S, Kulikov, A.V, Kondaurova, E.M, Tsybko, A.S, Kulikova, E.A, Krasnov, I.B, Shenkman, B.S, Sychev, V.N, Bazhenova, E.Y, Sinyakova, N.A, Popova, N.K

“…Highlights • Actual spaceflight considerably decreased BCL-XL gene expression in the hypothalamus. • Long-term spaceflight significantly increased BCL-XL gene…”
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Effects of parasite specificity and previous infestation of hosts on the feeding and reproductive success of rodent-infesting fleas by Khokhlova, I. S., Ghazaryan, L., Krasnov, B. R., Degen, A. A.

“…1. We examined whether identity of the rodent host and previous infestation of the host affect feeding and reproduction of fleas. We predicted that feeding and…”
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Effect of microgravity on glial cell line-derived neurotrophic factor and cerebral dopamine neurotrophic factor gene expression in the mouse brain by Tsybko, A.S., Ilchibaeva, T.V., Kulikov, A.V., Kulikova, E.A., Krasnov, I.B., Sychev, V.N., Shenkman, B.S., Popova, N.K., Naumenko, V.S.

“…Mice were exposed to 1 month of space flight on the Russian biosatellite BION‐M1 to determine its effect on the expression of genes involved in the maintenance…”
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Simple epidemiological model predicts the relationships between prevalence and abundance in ixodid ticks by Stanko, M, Krasnov, B R, Miklisova, D, Morand, S

“…We tested whether the prevalence of ticks can be predicted reliably from a simple epidemiological model that takes into account only mean abundance and its…”
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Flea Infestation and Energy Requirements of Rodent Hosts: Are There General Rules? by H. Hawlena, Krasnov, B. R., Abramsky, Z., Khokhlova, I. S., Saltz, D., Kam, M., Tamir, A., Degen, A. A.

“…1. Two immunological tactics, a constitutive response that is always present, and an induced response that is only employed after an invader has been…”
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Sex ratio in flea infrapopulations: number of fleas, host gender and host age do not have an effect by Krasnov, B R, Shenbrot, G I, Khokhlova, I S, Hawlena, H, Degen, A A

“…This study set out to determine whether the sex ratio of fleas collected from host bodies is a reliable indicator of sex ratio in the entire flea population…”
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Development rates of two Xenopsylla flea species in relation to air temperature and humidity by Krasnov, B. R., Khokhlova, I. S., Fielden, L. J., Burdelova, N. V.

“… The rate of development of immature fleas, Xenopsylla conformis Wagner and Xenopsylla ramesis Rothschild (Siphonaptera: Xenopsyllidae) was studied in the…”
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Covariance in species diversity and facilitation among non-interactive parasite taxa: all against the host by Krasnov, B R, Mouillot, D, Khokhlova, I S, Shenbrot, G I, Poulin, R

“…Different parasite taxa exploit different host resources and are often unlikely to interact directly. It is unclear, however, whether the diversity of any…”
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Host-habitat relations as an important determinant of spatial distribution of flea assemblages (Siphonaptera) on rodents in the Negev Desert by Krasnov, B R, Shenbrot, G I, Medvedev, S G, Vatschenok, V S, Khokhlova, I S

“…We studied flea assemblages on rodents in different habitats of the Ramon erosion cirque in the Negev Desert to examine whether host-habitat relations…”
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