Search Results - "Westerdahl, H"

Hidden costs of infection: Chronic malaria accelerates telomere degradation and senescence in wild birds by Asghar, M., Hasselquist, D., Hansson, B., Zehtindjiev, P., Westerdahl, H., Bensch, S.

“…Recovery from infection is not always complete, and mild chronic infection may persist. Although the direct costs of such infections are apparently small, the…”
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quantitative review of MHC‐based mating preference: the role of diversity and dissimilarity by Kamiya, T, O'Dwyer, K, Westerdahl, H, Senior, A, Nakagawa, S

“…Sexual selection hypotheses stipulate that the major histocompatibility complex genes (MHC) constitute a key molecular underpinning for mate choice in…”
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Signatures of selection acting on the innate immunity gene Toll‐like receptor 2 (TLR2) during the evolutionary history of rodents by TSCHIRREN, B., RÅBERG, L., WESTERDAHL, H.

“…Patterns of selection acting on immune defence genes have recently been the focus of considerable interest. Yet, when it comes to vertebrates, studies have…”
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evolution of highly variable immunity genes across a passerine bird radiation by O'Connor, E. A, Strandh, M, Hasselquist, D, Nilsson, J.‐Å, Westerdahl, H

“…To survive, individuals must be able to recognize and eliminate pathogens. The genes of the major histocompatibility complex (MHC) play an essential role in…”
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Major histocompatibility complex genes partly explain early survival in house sparrows by Lukasch, B., Westerdahl, H., Strandh, M., Knauer, F., Winkler, H., Moodley, Y., Hoi, H.

“…Environmental factors and genetic incompatibilities between parents have been suggested as important determinants for embryonic mortality and survival. The…”
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Broad-scale latitudinal patterns of genetic diversity among native European and introduced house sparrow (Passer domesticus) populations by SCHREY, A. W., GRISPO, M., AWAD, M., COOK, M. B., McCOY, E. D., MUSHINSKY, H. R., ALBAYRAK, T., BENSCH, S., BURKE, T., BUTLER, L. K., DOR, R., FOKIDIS, H. B., JENSEN, H., IMBOMA, T., KESSLER-RIOS, M. M., MARZAL, A., STEWART, I. R. K., WESTERDAHL, H., WESTNEAT, D. F., ZEHTINDJIEV, P., MARTIN, L. B.

“…Introduced species offer unique opportunities to study evolution in new environments, and some provide opportunities for understanding the mechanisms…”
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MHC-I provides both quantitative resistance and susceptibility to blood parasites in blue tits in the wild by Aguilar, J. Rivero-de, Westerdahl, H., Puente, J. Martínez-de la, Tomás, G., Martínez, J., Merino, S.

“…Major histocompatibility complex (MHC) genes are central for the adaptive immune response against parasites. Here, we investigated potential associations among…”
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Host specificity in avian blood parasites: a study of Plasmodium and Haemoproteus mitochondrial DNA amplified from birds by Bensch, Stffan, Stjernman, Martin, Hasselquist, Dennis, Örjan, Östman, Hannson, Bengt, Westerdahl, Helena, Pinheiro, Renato Torres

“…or…”
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Between‐year variation of MHC allele frequencies in great reed warblers: selection or drift? by Westerdahl, H., Hansson, B., Bensch, S., Hasselquist, D.

“…The major histocompatibility complex (MHC) genes are extremely polymorphic and this variation is assumed to be maintained by balancing selection. Cyclic…”
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Sea Bed Logging (SBL), a new method for remote and direct identification of hydrocarbon filled layers in deepwater areas by EIDESMO, T, ELLINGSRUD, S, MACGREGOR, L. M, CONSTABLE, S, SINHA, M. C, JOHANSEN, S, KONG, F. N, WESTERDAHL, H

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MHC class I typing in a songbird with numerous loci and high polymorphism using motif-specific PCR and DGGE by Westerdahl, H, Wittzell, H, von Schantz, T, Bensch, S

“…The major histocompatibility complex (MHC) has a central role in the specific immune defence of vertebrates. Exon 3 of MHC class I genes encodes the domain…”
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Observation of a ZZW female in a natural population: implications for avian sex determination by Arlt, D., Bensch, S., Hansson, B., Hasselquist, D., Westerdahl, H.

“…Avian sex determination is chromosomal; however, the underlying mechanisms are not yet understood. There is no conclusive evidence for either of two proposed…”
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Polymorphism and transcription of Mhc class I genes in a passerine bird, the great reed warbler by Westerdahl, H, Wittzell, H, von Schantz, T

“…The class I genes of the major histocompatibility complex (Mhc) are here investigated for the first time in a passerine bird. The great reed warbler is a rare…”
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Brood Sex Ratios, Female Harem Status and Resources for Nestling Provisioning in the Great Reed Warbler (Acrocephalus arundinaceus) by Westerdahl, Helena, Bensch, Staffan, Hansson, Bengt, Hasselquist, Dennis, von Schantz, Torbjörn

“…The theory of parental investment and brood sex ratio manipulation predicts that parents should invest in the more costly sex during conditions when resources…”
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Sex ratio variation among broods of great reed warblers Acrocephalus arundinaceus by Westerdahl, H., Bensch, S., Hansson, B., Hasselquist, D., Von Schantz, T.

“…The sex of 746 great reed warbler fledglings (from 175 broods) was determined by the use of single primer polymerase chain reaction. The reliability of the…”
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Do females adjust the sex of their offspring in relation to the breeding sex ratio? by Bensch, S, Westerdahl, H, Hansson, B, Hasselquist, D

“…When the adult sex ratio differs between years in local populations, but still is predictable between adjacent years, it has been proposed that the best…”
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No evidence of an MHC-based female mating preference in great reed warblers by WESTERDAHL, HELENA

“…Female mate‐choice based on genetic compatibility is an area of growing interest. The major histocompatibility complex (MHC) genes are likely candidates for…”
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Short Streamers and Sparse OBN Acquisition: Potential for CCS Monitoring? by David, S., Kroode, F. Ten, Cho, E., Zuberi, M.A.H., Stock, G., Baldock, S., Mispel, J., Westerdahl, H., Thompson, M., Pedersen, Å. Sjøen

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TERMINAL INVESTMENT INDUCED BY IMMUNE CHALLENGE AND FITNESS TRAITS ASSOCIATED WITH MAJOR HISTOCOMPATIBILITY COMPLEX IN THE HOUSE SPARROW by Bonneaud, Camille, Mazuc, Jeremy, Chastel, Olivier, Westerdahl, Helena, Sorci, Gabriele

“…The terminal investment hypothesis predicts that individuals should invest more in their present reproduction if they are less likely to survive to future…”
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Complex Mhc-based mate choice in a wild passerine by Bonneaud, Camille, Chastel, Olivier, Federici, Pierre, Westerdahl, Helena, Sorci, Gabriele

“…alleles and when they were too dissimilar from females at…”
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