Breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow
Individuals at the forefront of a range shift are likely to exhibit phenotypic traits that distinguish them from the population breeding within the historic range. Recent studies have examined morphological, physiological and behavioral phenotypes of individuals at the edge of their range. Several s...
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ftcdlib:oai:escholarship.org:ark:/13030/qt7gn1x99c 2023-10-25T01:35:34+02:00 Breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow Krause, Jesse S Chmura, Helen E Pérez, Jonathan H Quach, Lisa N Asmus, Ashley Word, Karen R McGuigan, Michaela A Sweet, Shannan K Meddle, Simone L Gough, Laura Boelman, Natalie Wingfield, John C 33 - 44 2016-01-01 application/pdf https://escholarship.org/uc/item/7gn1x99c unknown eScholarship, University of California qt7gn1x99c https://escholarship.org/uc/item/7gn1x99c public Oecologia, vol 180, iss 1 Zoology Ecology Biological Sciences Neurosciences Behavioral and Social Science Mental Health Metabolic and endocrine Animal Migration Animals Arctic Regions Breeding Climate Change Cold Temperature Corticosterone Female Glucocorticoids Homing Behavior Hypothalamo-Hypophyseal System Male Phenotype Pituitary-Adrenal System Reproduction Sparrows Stress Physiological Adrenocortical Hypothalamic-pituitary-adrenal axis Morphometrics Allostatic load Hypothalamic–pituitary–adrenal axis Evolutionary biology article 2016 ftcdlib 2023-09-25T18:03:17Z Individuals at the forefront of a range shift are likely to exhibit phenotypic traits that distinguish them from the population breeding within the historic range. Recent studies have examined morphological, physiological and behavioral phenotypes of individuals at the edge of their range. Several studies have found differences in the hypothalamic-pituitary-adrenal (HPA) axis activity in response to acute restraint stress in individuals at the range limits. HPA axis activation leads to elevations in glucocorticoids that regulate physiology and behavior. Here we compare the hormonal profiles and morphometrics from Gambel's white-crowned sparrows (Zonotrichia leucophrys gambelii) breeding at the northern limit of the population's range to those birds breeding within the historic population range. Birds breeding at the northern limit experienced a harsher environment with colder temperatures; however, we found no differences in arthropod prey biomass between the northern limit and more southern (historic) sites. Males at the northern limit had higher body condition scores (mass corrected for body size) compared to individuals within the historic range, but no differences were found in beak and tarsus lengths, wing chord, muscle profile or fat stores. In males during the pre-parental stage, before breeding commenced, HPA axis activity was elevated in birds at the northern limit of the range, but no differences were found during the parental or molt stages. Females showed no differences in HPA axis activity during the parental stage. This study suggests that "pioneering" individuals at the limits of their breeding range exhibit physiology and morphology that are distinct from individuals within the historic range. Article in Journal/Newspaper Arctic Climate change University of California: eScholarship Arctic |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Zoology Ecology Biological Sciences Neurosciences Behavioral and Social Science Mental Health Metabolic and endocrine Animal Migration Animals Arctic Regions Breeding Climate Change Cold Temperature Corticosterone Female Glucocorticoids Homing Behavior Hypothalamo-Hypophyseal System Male Phenotype Pituitary-Adrenal System Reproduction Sparrows Stress Physiological Adrenocortical Hypothalamic-pituitary-adrenal axis Morphometrics Allostatic load Hypothalamic–pituitary–adrenal axis Evolutionary biology |
spellingShingle |
Zoology Ecology Biological Sciences Neurosciences Behavioral and Social Science Mental Health Metabolic and endocrine Animal Migration Animals Arctic Regions Breeding Climate Change Cold Temperature Corticosterone Female Glucocorticoids Homing Behavior Hypothalamo-Hypophyseal System Male Phenotype Pituitary-Adrenal System Reproduction Sparrows Stress Physiological Adrenocortical Hypothalamic-pituitary-adrenal axis Morphometrics Allostatic load Hypothalamic–pituitary–adrenal axis Evolutionary biology Krause, Jesse S Chmura, Helen E Pérez, Jonathan H Quach, Lisa N Asmus, Ashley Word, Karen R McGuigan, Michaela A Sweet, Shannan K Meddle, Simone L Gough, Laura Boelman, Natalie Wingfield, John C Breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow |
topic_facet |
Zoology Ecology Biological Sciences Neurosciences Behavioral and Social Science Mental Health Metabolic and endocrine Animal Migration Animals Arctic Regions Breeding Climate Change Cold Temperature Corticosterone Female Glucocorticoids Homing Behavior Hypothalamo-Hypophyseal System Male Phenotype Pituitary-Adrenal System Reproduction Sparrows Stress Physiological Adrenocortical Hypothalamic-pituitary-adrenal axis Morphometrics Allostatic load Hypothalamic–pituitary–adrenal axis Evolutionary biology |
description |
Individuals at the forefront of a range shift are likely to exhibit phenotypic traits that distinguish them from the population breeding within the historic range. Recent studies have examined morphological, physiological and behavioral phenotypes of individuals at the edge of their range. Several studies have found differences in the hypothalamic-pituitary-adrenal (HPA) axis activity in response to acute restraint stress in individuals at the range limits. HPA axis activation leads to elevations in glucocorticoids that regulate physiology and behavior. Here we compare the hormonal profiles and morphometrics from Gambel's white-crowned sparrows (Zonotrichia leucophrys gambelii) breeding at the northern limit of the population's range to those birds breeding within the historic population range. Birds breeding at the northern limit experienced a harsher environment with colder temperatures; however, we found no differences in arthropod prey biomass between the northern limit and more southern (historic) sites. Males at the northern limit had higher body condition scores (mass corrected for body size) compared to individuals within the historic range, but no differences were found in beak and tarsus lengths, wing chord, muscle profile or fat stores. In males during the pre-parental stage, before breeding commenced, HPA axis activity was elevated in birds at the northern limit of the range, but no differences were found during the parental or molt stages. Females showed no differences in HPA axis activity during the parental stage. This study suggests that "pioneering" individuals at the limits of their breeding range exhibit physiology and morphology that are distinct from individuals within the historic range. |
format |
Article in Journal/Newspaper |
author |
Krause, Jesse S Chmura, Helen E Pérez, Jonathan H Quach, Lisa N Asmus, Ashley Word, Karen R McGuigan, Michaela A Sweet, Shannan K Meddle, Simone L Gough, Laura Boelman, Natalie Wingfield, John C |
author_facet |
Krause, Jesse S Chmura, Helen E Pérez, Jonathan H Quach, Lisa N Asmus, Ashley Word, Karen R McGuigan, Michaela A Sweet, Shannan K Meddle, Simone L Gough, Laura Boelman, Natalie Wingfield, John C |
author_sort |
Krause, Jesse S |
title |
Breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow |
title_short |
Breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow |
title_full |
Breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow |
title_fullStr |
Breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow |
title_full_unstemmed |
Breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic Gambel’s white-crowned sparrow |
title_sort |
breeding on the leading edge of a northward range expansion: differences in morphology and the stress response in the arctic gambel’s white-crowned sparrow |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/7gn1x99c |
op_coverage |
33 - 44 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Oecologia, vol 180, iss 1 |
op_relation |
qt7gn1x99c https://escholarship.org/uc/item/7gn1x99c |
op_rights |
public |
_version_ |
1780730653677977600 |