Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Barbara Hellriegel"'
La variation dans les caractéristiques des gamètes peut dépendre de plusieurs facteurs génétiques et environnementaux, tels que l'instabilité du développement causée par la consanguinité, les perturbations (bruit) dans le développement dura
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::917ad98e50ea05a7a6f67004dc67ce0b
http://doc.rero.ch/record/302938/files/S0008347X00004910.pdf
http://doc.rero.ch/record/302938/files/S0008347X00004910.pdf
Autor:
Ivo Niermann, Pius Korner-Nievergelt, Barbara Hellriegel, Robert Brinkmann, Oliver Behr, Fränzi Korner-Nievergelt
Publikováno v:
Wildlife Biology. 17:350-363
Wind energy is of increasing importance for a sustainable energy supply worldwide. At the same time, concerns about the number of birds and bats being killed at wind turbines have been growing. In this situation, methods for a reliable estimation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c989d9bfde9cf4ad12be9e452ebf6dd
https://doi.org/10.2981/10-121
https://doi.org/10.2981/10-121
Autor:
David J. Hosken, Res Altwegg, Paul I. Ward, Barbara Hellriegel, P. Jann, Wolf U. Blanckenhorn
Publikováno v:
Functional Ecology. 18:414-418
Summary 1 We quantitatively compare the fitness function linking male mating success in the field to body size and the allometric relationship linking testis length (estimating sperm production) to body size, both empirically derived, for the yellow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66680e07ec92db20d50aef50afab7a25
https://doi.org/10.1111/j.0269-8463.2004.00864.x
https://doi.org/10.1111/j.0269-8463.2004.00864.x
Publikováno v:
Journal of Insect Physiology, vol. 48, no. 2, pp. 197-203
While sperm competition risk favours males transferring many sperm to secure fertilizations, females of a variety of species actively reduce sperm numbers reaching their reproductive tract, e.g. by extrusion or killing. Potential benefits of spermici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::425c26ef08111b21769cbd026a0a85cd
https://doi.org/10.1016/s0022-1910(01)00164-0
https://doi.org/10.1016/s0022-1910(01)00164-0
Autor:
Barbara Hellriegel, Paul I. Ward
Publikováno v:
Journal of Theoretical Biology. 190:179-186
Sperm competition has traditionally been modelled exclusively from the male perspective with females as passive participants. However females of many species have a physiologically and morphologically complex reproductive system (e.g. multiple sperm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d5790dc7173ba571d91d722812584a1
https://doi.org/10.1006/jtbi.1997.0546
https://doi.org/10.1006/jtbi.1997.0546
Publikováno v:
Proceedings. Biological sciences / The Royal Society
Group-living animals often do not maintain territories, but instead have highly overlapping ranges, even though in principle these are economically defendable. We investigate whether this absence of range defence reflects a collective action problem,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd3888fe88c75b2f1aec8f6dad73beee
https://pubmed.ncbi.nlm.nih.gov/23516240
https://pubmed.ncbi.nlm.nih.gov/23516240
Autor:
Dmytro Lituiev, Ueli Grossniklaus, David A. Jackson, Thomas Dresselhaus, Bruno Müller, Barbara Hellriegel, Nádia Graciele Krohn
The plant life cycle alternates between a diploid sporophytic and a haploid gametophytic generation. The female gametophyte (FG) of flowering plants is typically formed through three syncytial mitoses, followed by cellularisation that forms seven cel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4065e374fe6e629fc52c64b287e02aea
https://www.zora.uzh.ch/id/eprint/89704/
https://www.zora.uzh.ch/id/eprint/89704/
In flowering plants, the onset and duration of female receptivity vary among species. In several species the receptive structures wilt upon pollination. Here we explore the hypothesis that postpollination wilting may be influenced by pollen and serve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8780d4f4aa7026e05f60327f3445abc7
http://doc.rero.ch/record/16796/files/Lankinen_Asa_-_Sexual_conflict_over_floral_receptivity_20091229.pdf
http://doc.rero.ch/record/16796/files/Lankinen_Asa_-_Sexual_conflict_over_floral_receptivity_20091229.pdf
Autor:
Hajo Grundmann, Barbara Hellriegel
Publikováno v:
Lancet Infectious Diseases, 6(1), 39-45. ELSEVIER SCI LTD
Health-care-associated infections caused by antibiotic-resistant pathogens have become a menace in hospitals worldwide and infection control measures have lead to vastly different outcomes in different countries. During the past 6 years, a theoretica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d40a57c2c6eb4244da7a121e6e8ee6bb
https://research.rug.nl/en/publications/1523b688-b8af-48c5-ba33-52f5e8bb29fd
https://research.rug.nl/en/publications/1523b688-b8af-48c5-ba33-52f5e8bb29fd
Autor:
Diane L. Marshall, I Skogsmyr, Irène Till-Bottraud, Bernhard Schmid, J. D. D Bishop, Douglas R. Taylor, Tim R. Birkhead, Paul I. Ward, Ueli Grossniklaus, D. W Zeh, Tia-Lynn Ashman, Rhonda R. Snook, Barbara Hellriegel, E Kubli, Giorgina Bernasconi
Publikováno v:
Science
Science, American Association for the Advancement of Science, 2004, 303 (5660), pp.971-975. ⟨10.1126/science.1092180⟩
Science, American Association for the Advancement of Science, 2004, 303 (5660), pp.971-975. ⟨10.1126/science.1092180⟩
Times Cited: 38 Cited Reference Count: 67; International audience; The life cycles of sexually reproducing animals and flowering plants begin with male and female gametes and their fusion to form a zygote. Selection at this earliest stage is crucial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d1ae437f3bae1dc7eb6bbf48fb33971
https://pubmed.ncbi.nlm.nih.gov/14963320
https://pubmed.ncbi.nlm.nih.gov/14963320