Zobrazeno 1 - 10 of 45 pro vyhledávání: '"Catherine M. Ivy"'
1
Akademický článek
Counter-gradient variation and the expensive tissue hypothesis explain parallel brain size reductions at high elevation in cricetid and murid rodents
Autor: Aluwani Nengovhela, Catherine M. Ivy, Graham R. Scott, Christiane Denys, Peter J. Taylor
Publikováno v: Scientific Reports, Vol 13, Iss 1, Pp 1-11 (2023)
Abstract To better understand functional morphological adaptations to high elevation (> 3000 m above sea level) life in both North American and African mountain-associated rodents, we used microCT scanning to acquire 3D images and a 3D morphometric a
Externí odkaz: https://doaj.org/article/133d5850e8cb4d1b97e46926b9fb931b
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2
Akademický článek
Adrenergic control of the cardiovascular system in deer mice native to high altitude
Autor: Oliver H. Wearing, Derek Nelson, Catherine M. Ivy, Dane A. Crossley, II, Graham R. Scott
Publikováno v: Current Research in Physiology, Vol 5, Iss , Pp 83-92 (2022)
Studies of animals native to high altitude can provide valuable insight into physiological mechanisms and evolution of performance in challenging environments. We investigated how mechanisms controlling cardiovascular function may have evolved in dee
Externí odkaz: https://doaj.org/article/76d8fc8a322848ea9da90ea70736fed1
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3
Akademický článek
The adaptive benefit of evolved increases in hemoglobin-O2 affinity is contingent on tissue O2 diffusing capacity in high-altitude deer mice
Autor: Oliver H. Wearing, Catherine M. Ivy, Natalia Gutiérrez-Pinto, Jonathan P. Velotta, Shane C. Campbell-Staton, Chandrasekhar Natarajan, Zachary A. Cheviron, Jay F. Storz, Graham R. Scott
Publikováno v: BMC Biology, Vol 19, Iss 1, Pp 1-15 (2021)
Abstract Background Complex organismal traits are often the result of multiple interacting genes and sub-organismal phenotypes, but how these interactions shape the evolutionary trajectories of adaptive traits is poorly understood. We examined how fu
Externí odkaz: https://doaj.org/article/fbe09799084040bdac218fcb486a398c
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4
Akademický článek
Distinct Mechanisms Underlie Developmental Plasticity and Adult Acclimation of Thermogenic Capacity in High-Altitude Deer Mice
Autor: Catherine M. Ivy, Haley Prest, Claire M. West, Graham R. Scott
Publikováno v: Frontiers in Physiology, Vol 12 (2021)
Developmental plasticity can elicit phenotypic adjustments that help organisms cope with environmental change, but the relationship between developmental plasticity and plasticity in adult life (e.g., acclimation) remains unresolved. We sought to exa
Externí odkaz: https://doaj.org/article/b6e0fd198614413f98732db194c9470c
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5
Genetic variation in HIF‐2α attenuates ventilatory sensitivity and carotid body growth in chronic hypoxia in high‐altitude deer mice
Autor: Catherine M. Ivy, Jonathan P. Velotta, Zachary A. Cheviron, Graham R. Scott
Publikováno v: The Journal of Physiology. 600:4207-4225
The gene encoding HIF-2α, Epas1, has experienced a history of natural selection in many high-altitude taxa, but the functional role of mutations in this gene is still poorly understood. We investigated the influence of the high-altitude variant of E
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5897f31189b1241407c550c6ebbe392
https://doi.org/10.1113/jp282798
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6
Gene regulatory changes underlie developmental plasticity in respiration and aerobic performance in highland deer mice
Autor: Rena M. Schweizer, Catherine M. Ivy, Chandrasekhar Natarajan, Graham R. Scott, Jay F. Storz, Zachary A. Cheviron
Publikováno v: Molecular Ecology.
Phenotypic plasticity can play an important role in the ability of animals to tolerate environmental stress, but the nature and magnitude of plastic responses are often specific to the developmental timing of exposure. Here, we examine changes in gen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff827a545e7cf020e7da28e6ae81c026
https://doi.org/10.1111/mec.16953
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7
The relationship between hypoxia exposure and circulating cortisol levels in social and solitary African mole-rats: An initial report
Autor: Daniel W. Hart, Nigel C. Bennett, Carol Best, Barry van Jaarsveld, Hang Cheng, Catherine M. Ivy, Alexia M. Kirby, Daniel Munro, Ryan J. Sprenger, Kenneth B. Storey, William K. Milsom, Matthew E. Pamenter
Publikováno v: General and Comparative Endocrinology. 339:114294
Hypoxemia from exposure to intermittent and/or acute environmental hypoxia (lower oxygen concentration) is a severe stressor for many animal species. The response to hypoxia of the hypothalamic-pituitary-adrenal axis (HPA-axis), which culminates in t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22c58642be575e5e80c78f7331dbc6be
https://doi.org/10.1016/j.ygcen.2023.114294
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9
Physiological and behavioural strategies of aquatic animals living in fluctuating environments
Autor: Tamzin A. Blewett, Sandra A. Binning, Alyssa M. Weinrauch, Catherine M. Ivy, Giulia S. Rossi, Brittney G. Borowiec, Gigi Y. Lau, Sienna L. Overduin, Isabel Aragao, Tommy Norin
Publikováno v: The Journal of experimental biology. 225(9)
Shallow or near-shore environments, such as ponds, estuaries and intertidal zones, are among the most physiologically challenging of all aquatic settings. Animals inhabiting these environments experience conditions that fluctuate markedly over relati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f33d53d0a7928d480eb50dbba382c100
https://pubmed.ncbi.nlm.nih.gov/35511083
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10
Genetic variation in haemoglobin is associated with evolved changes in breathing in high-altitude deer mice
Autor: Catherine M. Ivy, Oliver H. Wearing, Chandrasekhar Natarajan, Rena M. Schweizer, Natalia Gutiérrez-Pinto, Jonathan P. Velotta, Shane C. Campbell-Staton, Elin E. Petersen, Angela Fago, Zachary A. Cheviron, Jay F. Storz, Graham R. Scott
Publikováno v: J Exp Biol
Ivy, C M, Wearing, O H, Natarajan, C, Schweizer, R M, Gutiérrez-Pinto, N, Velotta, J P, Campbell-Staton, S C, Petersen, E E, Fago, A, Cheviron, Z A, Storz, J F & Scott, G R 2022, ' Genetic variation in haemoglobin is associated with evolved changes in breathing in high-altitude deer mice ', Journal of Experimental Biology, vol. 225, no. 2, jeb243595 . https://doi.org/10.1242/jeb.243595
Physiological systems often have emergent properties but the effects of genetic variation on physiology are often unknown, which presents a major challenge to understanding the mechanisms of phenotypic evolution. We investigated whether genetic varia
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef7af77811ea1d7d03653bb70dd24972
https://doi.org/10.1242/jeb.243595
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