Animal Migration最新文献_第3页

Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers 地理定位器揭示了塞鲁蓝莺种群的迁徙路线、中途停留地点和非繁殖分散

Animal Migration Pub Date : 2020-01-01 DOI: 10.1515/ami-2020-0003

Clayton D. Delancey, K. Islam, G. Kramer, Garrett J. MacDonald, Alexander R. Sharp, Brandon M. Connare

{"title":"Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers","authors":"Clayton D. Delancey, K. Islam, G. Kramer, Garrett J. MacDonald, Alexander R. Sharp, Brandon M. Connare","doi":"10.1515/ami-2020-0003","DOIUrl":"https://doi.org/10.1515/ami-2020-0003","url":null,"abstract":"Abstract Cerulean Warblers (Setophaga cerulea) are among the fastest declining Nearctic-Neotropical migrant wood-warblers (Parulidae) in North America. Despite ongoing conservation efforts, little is known about their non-breeding distribution. In June 2016-2018, we deployed geolocators (n = 30) on adult male Cerulean Warblers in Indiana, USA, to track annual movements of individuals. Recovered geolocators (n = 4) showed that Cerulean Warblers occurred broadly throughout northern South America. Autumn migration lasted 44-71 days (n = 4), whereas spring migration lasted 37-41 days (n = 3). The average migration distance was 5268 km. During autumn migration, Cerulean Warblers made 1-4 stopovers (i.e., ≥2 days; n = 4) and 1-2 stopovers during spring migration (n = 3). When crossing the Gulf of Mexico during autumn migration, two birds stopped over after crossing, but not beforehand. Two others navigated through the Caribbean rather than crossing the Gulf of Mexico. During spring migration, one individual stopped after crossing, one individual stopped before crossing, and one individual stopped before and after crossing the Gulf of Mexico. No birds migrated through the Caribbean Islands during spring migration. These results represent novel information describing annual movements of individual Cerulean Warblers and will inform conservation efforts for this declining species.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"7 1","pages":"19 - 26"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2020-0003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44959134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Advancing interpretation of stable isotope assignment maps: comparing and summarizing origins of known-provenance migratory bats 稳定同位素分配图的进一步解释:比较和总结已知来源的迁徙蝙蝠的起源

Animal Migration Pub Date : 2020-01-01 DOI: 10.1515/ami-2020-0004

C. Campbell, M. Fitzpatrick, H. V. Vander Zanden, D. Nelson

{"title":"Advancing interpretation of stable isotope assignment maps: comparing and summarizing origins of known-provenance migratory bats","authors":"C. Campbell, M. Fitzpatrick, H. V. Vander Zanden, D. Nelson","doi":"10.1515/ami-2020-0004","DOIUrl":"https://doi.org/10.1515/ami-2020-0004","url":null,"abstract":"Abstract Probability-of-origin maps deduced from stable isotope data are important for inferring broad-scale patterns of animal migration, but few resources and tools for interpreting and validating these maps exist. For example, quantitative tools for comparing multiple probability-of-origin maps do not exist, and many existing approaches for geographic assignment of individuals have not been validated or compared with respect to precision and accuracy. To address these challenges, we created and analyzed probability-of-origin maps using stable hydrogen isotope values from known-origin individuals of three species of migratory bat. We used a metric of spatial overlap to group individuals by areas of origin without a priori knowledge of such regions. The metric of spatial similarity allowed for quantitative comparison of geographic origins and grouping of individuals with similar origins. We then compared four approaches for inferring origins (cumulative-sum, odds-ratio, quantile-only, and quantile-simulation) across a range of thresholds and probable minimum distance traveled. The accuracy of geographic origins and minimum distance traveled varied across species at most threshold values for most approaches. The cumulative-sum and quantile-simulation approaches had generally higher precision at a given level of accuracy than the odds-ratio and quantile-only approaches, and many threshold values were associated with a relatively high degree (> 300 km) of variation in minimum distance traveled. Overall, these results reinforce the importance of validating assignment techniques with known-origin individuals when possible. We present the tools discussed as part of an R package, ‘isocat’ (“Isotope Origin Clustering and Assignment Tools”).","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"7 1","pages":"27 - 41"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2020-0004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43857271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Variation in individual autumn migration and winter paths of Great Lakes red-headed woodpeckers (Melanerpes erythrocephalus) 五大湖红头啄木鸟个体秋季迁徙和冬季路径的变化

Animal Migration Pub Date : 2020-01-01 DOI: 10.1515/ami-2020-0002

R. Pagel, Elena H. West, Andrew W. Jones, H. Streby

{"title":"Variation in individual autumn migration and winter paths of Great Lakes red-headed woodpeckers (Melanerpes erythrocephalus)","authors":"R. Pagel, Elena H. West, Andrew W. Jones, H. Streby","doi":"10.1515/ami-2020-0002","DOIUrl":"https://doi.org/10.1515/ami-2020-0002","url":null,"abstract":"Abstract Migratory movements of facultative migrants are poorly understood due to their irregular and often unpredictable occurrence. However, tracking such movements is important for understanding population dynamics, informing annual cycle conservation plans, and identifying possible cues of facultative migration. We used pinpoint GPS tags to track autumn and winter movements of migratory red-headed woodpeckers (Melanerpes erythrocephalus) to better understand migration frequency, timing, and routes for birds breeding in managed oak savanna systems in the North American Great Lakes region. Proportions of individuals migrating differed between the two sites, with 72% of the Ohio population migrating, while no individuals in the Minnesota population migrated. Of the Ohio birds that migrated, their movements were highly variable in distance and direction but generally occurred south of the breeding site. Wintering sites ranged from 111 – 218 km from the breeding site. Cover types occupied during migration and wintering were almost exclusively small patches of closed-canopy hardwood forest within agricultural matrices. We documented one-time movements in migratory and non-migratory individuals during the year that have not previously been described in facultative migrants. We found no evidence of a harness or marker effect on proportions of individuals migrating, migration return rates, or annual survival regardless of migration.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"7 1","pages":"9 - 18"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2020-0002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42731385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Comparing fall migration of three Catharus species using a radio-telemetry network 利用无线电遥测网络比较三种Catharus物种的秋季迁徙

Animal Migration Pub Date : 2020-01-01 DOI: 10.1515/ami-2020-0001

Camille Bégin Marchand, A. Desrochers, J. Tremblay, Pascal Côté

引用次数: 1

A themed collection of research articles focused on stress physiology of bird migration 以鸟类迁徙应激生理学为主题的研究文章集

Animal Migration Pub Date : 2019-01-01 DOI: 10.1515/ami-2019-0006

A. K. Davis, Emily Cornelius Ruhs

引用次数: 0

Urban residency and leukocyte profiles in a traditionally migratory songbird 传统迁徙鸣禽的城市居住和白细胞分布

Animal Migration Pub Date : 2019-01-01 DOI: 10.1515/ami-2019-0002

Daniel J. Becker, E. M. Schultz, J. Atwell, E. Ketterson

{"title":"Urban residency and leukocyte profiles in a traditionally migratory songbird","authors":"Daniel J. Becker, E. M. Schultz, J. Atwell, E. Ketterson","doi":"10.1515/ami-2019-0002","DOIUrl":"https://doi.org/10.1515/ami-2019-0002","url":null,"abstract":"Abstract Many animals are shifting migrations in response to human activities. In particular, human-induced changes to climate and habitat (e.g., urbanization) likely facilitate animals becoming year-round residents. Because migration can be energetically expensive, shifts to sedentary behavior could minimize energetic demands incurred and any immunosuppressive effects. Residency in urban habitats could also provide abundant resources and allow sedentary animals to invest more in immunity. However, urban habitats could also expose sedentary animals to novel stressors that counter such benefits. To examine how recent shifts to residency affects physiology in ways that may shape infectious disease dynamics, we analyzed leukocyte profiles of two dark-eyed junco (Junco hyemalis) populations from southern California: the Laguna Mountain population, in which birds breed in high-elevation forests and migrate altitudinally, and the urban University of California San Diego population, which was likely established by overwintering migrants in the 1980s and has since become non-migratory. Over a two-year study of each population’s breeding season, we found no difference in the ratios of heterophils to lymphocytes between populations. However, urban residents had more leukocytes than birds from the altitudinal migrant population. A multivariate analysis suggested urban residents had fewer monocytes, but effect sizes were small. These results suggest no differences in energy demands or stressors between urban resident and altitudinal migrant populations during their breeding season. However, urban residency may confer immunological benefits through anthropogenic resources, which could have important consequences for disease dynamics..","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"6 1","pages":"49 - 59"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2019-0002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45810314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Migratory Species Show Distinct Patterns in Corticosterone Levels during Spring and Autumn Migrations 迁徙物种在春季和秋季迁徙期间皮质酮水平表现出不同的模式

Animal Migration Pub Date : 2019-01-01 DOI: 10.1515/ami-2019-0003

A. Tsvey, J. Loshchagina, S. Naidenko

{"title":"Migratory Species Show Distinct Patterns in Corticosterone Levels during Spring and Autumn Migrations","authors":"A. Tsvey, J. Loshchagina, S. Naidenko","doi":"10.1515/ami-2019-0003","DOIUrl":"https://doi.org/10.1515/ami-2019-0003","url":null,"abstract":"Abstract Twice a year billions of birds migrate between breeding and wintering grounds. To facilitate migrations, birds develop migratory disposition, a complex suite of behavioral and physiological adjustments. Glucocorticoid hormone corticosterone is involved in the regulation of migratory behavior and physiology, however no consensus on its exact role in controlling avian migration exists. Using a large dataset on seven songbird species (long- and short-distance migrants) obtained during eleven consecutive migratory seasons on the Courish Spit of the Baltic Sea, we showed the general tendency of similar baseline corticosterone concentrations during both migrations, although stress-induced levels were generally much higher during spring. No difference between long- and short-distance migrants was found in either baseline or stress-induced levels, while there was substantial between-species variation, especially in baseline concentrations. The distinct patterns of corticosterone secretion during seasonal migrations even in ecologically similar species indicate that it is likely to be a species-specific trait. Thus, our study corroborates the inconsistency found in earlier studies and demonstrates how scientific understanding of the role of corticosterone during migration is still evolving. Rather low baseline corticosterone concentrations observed in this study emphasize that birds in both migratory seasons were not in a “stressed” state before capture.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"6 1","pages":"18 - 4"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2019-0003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45388163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Migratory state is not associated with differences in neural glucocorticoid or mineralocorticoid receptor expression in pine siskins 迁移状态与松中神经糖皮质激素或盐皮质激素受体表达的差异无关

Animal Migration Pub Date : 2019-01-01 DOI: 10.1515/ami-2019-0001

H. Watts, Jeffrey L. Rittenhouse, K. Sewall, J. M. Bowers

{"title":"Migratory state is not associated with differences in neural glucocorticoid or mineralocorticoid receptor expression in pine siskins","authors":"H. Watts, Jeffrey L. Rittenhouse, K. Sewall, J. M. Bowers","doi":"10.1515/ami-2019-0001","DOIUrl":"https://doi.org/10.1515/ami-2019-0001","url":null,"abstract":"Abstract Although the endocrine system likely plays an important role in orchestrating the transition to a migratory state, the specific mechanisms by which this occurs remain poorly understood. Changes in glucocorticoid signaling are one proposed mechanism that may be important in migratory transitions. Although previous work has focused on the role of changes in circulating glucocorticoids, another potential mechanism is changes in the expression of its cognate receptors. Here, we test this hypothesis by comparing mRNA expression of the genes for the mineralocorticoid receptor (MR) and glucocorticoid receptor (GR) in two brain regions implicated in the regulation of migratory behavior (the hippocampus and hypothalamus) in pine siskins (Spinus pinus) sampled before or after the transition to a spring nomadic migratory state. Compared to pre-migratory birds, migratory birds had body conditions more indicative of physiological preparations for migration (e.g., larger body mass), and greater levels of nocturnal migratory restlessness. However, we found no differences between pre-migratory and migratory birds in the expression of GR or MR mRNA in either the hippocampus or hypothalamus. Thus, differences in expression of receptors for glucocorticoids do not appear to underly the observed differences in physiology and behavior across a migratory transition. Taken together with previous results showing no change in circulating corticosterone levels during this transition, our findings provide no evidence for a role of glucocorticoid signaling in the spring migratory transition of this species.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"6 1","pages":"19 - 27"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2019-0001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42622337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Leukocyte profiles vary with breeding latitude and infection status in a seasonally sympatric songbird 季节性同病鸣禽的白细胞图谱随繁殖纬度和感染状况的变化而变化

Animal Migration Pub Date : 2019-01-01 DOI: 10.1515/ami-2019-0004

Daniel J. Becker, K. Talbott, T. Smiley, K. Clark, P. Sauer, E. Ketterson

{"title":"Leukocyte profiles vary with breeding latitude and infection status in a seasonally sympatric songbird","authors":"Daniel J. Becker, K. Talbott, T. Smiley, K. Clark, P. Sauer, E. Ketterson","doi":"10.1515/ami-2019-0004","DOIUrl":"https://doi.org/10.1515/ami-2019-0004","url":null,"abstract":"Abstract Billions of animals migrate annually in pursuit of food, safety, and reproduction. Long-distance migration can be energetically expensive, which can force tradeoffs with investment in other physiological systems (e.g., suppressing immunity). Understanding the physiological impacts of migration is important to predict when and where such animals may be vulnerable to parasites and how changes to migration might affect infectious disease risks. To isolate relationships between migration and physiology from energetic tradeoffs and hormonal shifts associated with spring reproduction, we assessed differences in leukocyte profiles between seasonally sympatric resident and recently arrived fall migrant dark-eyed juncos (Junco hyemalis) in the Appalachian Mountains. When examining heterophil:lymphocyte (HL) ratios, which can elevate for long durations after even mild stressors, we found weak associations with migratory strategy (resident or migrant subspecies). In contrast, feather δ2H values showed that HL ratios were highest for juncos breeding at more northern latitudes, and this relationship was strongest for birds that arrived at the overwintering site infected with haemosporidian parasites (Plasmodium and Haemoproteus spp.). These patterns were more pronounced and better indicated hematological responses to stressors when using multivariate analyses. Our findings suggest that short- and long-distance migration may be more energetically costly in the presence of infection and highlight how approximating breeding latitude and using multivariate analyses can help understand host physiology.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"6 1","pages":"28 - 40"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2019-0004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45887376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Haemosporidian parasites and leukocyte profiles of pre-migratory rosy starlings (Pastor roseus) brought into captivity 圈养的红椋鸟的血孢子虫寄生虫和白细胞谱

Animal Migration Pub Date : 2019-01-01 DOI: 10.1515/ami-2019-0005

D. Dimitrov, M. Marinov, A. Bobeva, M. Ilieva, Kiril Bedev, T. Atanasov, Pavel Zehtindjiev

{"title":"Haemosporidian parasites and leukocyte profiles of pre-migratory rosy starlings (Pastor roseus) brought into captivity","authors":"D. Dimitrov, M. Marinov, A. Bobeva, M. Ilieva, Kiril Bedev, T. Atanasov, Pavel Zehtindjiev","doi":"10.1515/ami-2019-0005","DOIUrl":"https://doi.org/10.1515/ami-2019-0005","url":null,"abstract":"Abstract Immune response to pathogens such as avian malaria (Plasmodium spp.) and related haemosporidian parasites (Haemoproteus spp. and Leucocytozoon spp.) can lead to increases in energy demands of birds. Migrations are energetically costly for birds and require resources that could be otherwise invested in immune defence against pathogens. Here, we examined the prevalence and intensity of haemosporidian parasites (Apicomplexa, Haemosporida) in rosy starlings (Pastor roseus), an irruptive migrant on the Balkans, during their pre-migratory period. We further evaluated if these infections affected the stress levels of birds brought into overnight captivity, using leukocyte profiles (ratios of heterophils to lymphocytes, or H/L ratios). Haemosporidian parasites were detected based on microscopic examination, PCR and sequencing. We found high prevalence of haemosporidian parasites (83.9%) in rosy starlings (n=31), with predominant infections of Haemoproteus pastoris (cytochrome b lineage LAMPUR01) (80.1%). All birds had high heterophil/lymphocyte ratios (mean = 3.86), indicating the transition to captivity was stressful. However, there was no added stress from blood parasite infection during captivity, since infected birds did not have significantly higher heterophil/lymphocyte ratios than uninfected birds, despite all birds facing the same stress conditions. There was a negative correlation between intensity of H. pastoris and monocyte proportions, which may indicate an association with infection, or an artefact of the stress-induced shift in leukocyte profile following captivity. Our findings suggest that blood parasites have minimal additional impact on rosy starlings during an acute stress scenario (overnight captivity), arguing that they carry little cost to the energetically challenging migratory flight.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"6 1","pages":"41 - 48"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2019-0005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46822356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4