Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Jon T. Jorgenson"'
Autor:
Jon T. Jorgenson, David W. Coltman, Fanie Pelletier, Marco Festa-Bianchet, Marc-Antoine Poirier
Publikováno v:
Evolutionary Applications
Evolutionary Applications, Vol 12, Iss 7, Pp 1318-1328 (2019)
Evolutionary Applications, Vol 12, Iss 7, Pp 1318-1328 (2019)
Isolation of small populations is expected to reduce fitness through inbreeding and loss of genetic variation, impeding population growth and compromising population persistence. Species with long generation time are the least likely to be rescued by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b98817a21cdc728f4bbaf786cd78bdd
https://doi.org/10.1111/eva.12706
https://doi.org/10.1111/eva.12706
Publikováno v:
Ecology and Evolution
Human harvests can unwittingly drive evolution on morphology and life history, and these selective effects may be detrimental to the management of natural resources. Although theory suggests that harvest refuges, as sources of unselected animals, cou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8a263770a208583f1b0b0071fddeaef
https://doi.org/10.1002/ece3.1185
https://doi.org/10.1002/ece3.1185
Publikováno v:
The Journal of Wildlife Management. 78:133-141
Long-term data (1974-2011) from harvested bighorn rams (Ovis canadensis) in Alberta, Canada, suggested a reduction in horn size and in the proportion of trophy rams in the provincial population over time. Age at harvest increased over time, suggestin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93e35a2f56913281154cd2a45b815969
https://doi.org/10.1002/jwmg.644
https://doi.org/10.1002/jwmg.644
Publikováno v:
Oecologia. 156:773-781
In strongly seasonal environments, the timing of birth can have important fitness consequences. We investigated which factors affect parturition date and how birthdate interacts with sex, maternal characteristics and environmental variables to affect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1de07c159cfc92481afd81be5bf1c7c
https://doi.org/10.1007/s00442-008-1035-9
https://doi.org/10.1007/s00442-008-1035-9
Publikováno v:
Behavioral Ecology. 16(1):274-279
The Trivers and Willard model (TWM) predicts that for sexually dimorphic polygynous mammals, mothers able to provide a high level of care should bias offspring sex ratio in favor of sons. Contradictory results of empirical studies, however, suggest t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9405f3d41ea84e1d6e3ca095557ef5ae
http://hdl.handle.net/10.1093/beheco/arh153
http://hdl.handle.net/10.1093/beheco/arh153
Publikováno v:
Behavioral Ecology. 15(2):305-312
Males may allocate a greater proportion of metabolic resources to maintenance than to the development of secondary sexual characters when food is scarce, to avoid compromising their probability of survival. We assessed the effects of resource availab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::361774e97f83387c2b4797ac44a96e7a
http://hdl.handle.net/10.1093/beheco/arh014
http://hdl.handle.net/10.1093/beheco/arh014
Autor:
John T. Hogg, Paul O'Donoghue, David W. Coltman, Curtis Strobeck, Marco Festa-Bianchet, Jon T. Jorgenson
Publikováno v:
Nature. 426:655-658
Phenotype-based selective harvests, including trophy hunting, can have important implications for sustainable wildlife management if they target heritable traits. Here we show that in an evolutionary response to sport hunting of bighorn trophy rams (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2c776d5dc37e17d8fa0f1c7f5a7141a
https://doi.org/10.1038/nature02177
https://doi.org/10.1038/nature02177
Publikováno v:
Behavioral Ecology and Sociobiology. 54:167-173
We investigated the effects of vegetation biomass, crude protein content of consumed forage, age, sex and reproductive status on bite rates in Rocky Mountain bighorn sheep. We expected higher bite rates and vigilance in lactating females with young a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e863257b8171c851233573785dc2eb02
https://doi.org/10.1007/s00265-003-0615-2
https://doi.org/10.1007/s00265-003-0615-2
Publikováno v:
Canadian Journal of Zoology. 79:1661-1670
Sexual dimorphism is an important characteristic of many mammals, but little is known about how environmental variables may affect its phenotypic expression. The relationships between population size, body mass, seasonal mass changes, and sexual mass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d56f9c3094d54d0a180144dfa79333c1
https://doi.org/10.1139/z01-128
https://doi.org/10.1139/z01-128
Publikováno v:
Canadian Journal of Zoology. 79:1661-1670
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba116e1334f22e8121f7386d1e5b2c2d
https://doi.org/10.1139/cjz-79-9-1661
https://doi.org/10.1139/cjz-79-9-1661