Animal Migration最新文献_第2页

Western North American Monarchs: Spiraling into Oblivion or Adapting to a Changing Environment? 北美西部君主：是逐渐消失还是适应不断变化的环境？

Animal Migration Pub Date : 2021-01-01 DOI: 10.1515/ami-2021-0002

D. James

{"title":"Western North American Monarchs: Spiraling into Oblivion or Adapting to a Changing Environment?","authors":"D. James","doi":"10.1515/ami-2021-0002","DOIUrl":"https://doi.org/10.1515/ami-2021-0002","url":null,"abstract":"Abstract Monarch butterflies in western North America typically migrate each fall from the Pacific Northwest to overwintering sites in California. Winter 2020/21 saw the lowest number of overwintering western monarch butterflies ever recorded, but was also marked by a winter-breeding population in the San Francisco bay area that appeared to be the largest ever seen. Recoveries of monarchs with wing tags from the Pacific Northwest suggested that many non-reproductive migrants in fall 2020 became reproductive in the San Francisco bay area and did not reach coastal overwintering sites. Mean daily maximum temperatures for San Francisco during fall and winter increased by ~1 °C during the past decade and were 2.5 °C above the 30 year mean during September-October 2020. Warm fall and winter temperatures along with the availability of non-native milkweeds likely caused the increase in winter breeding in winter 2020/21. The outcome of continued winter-breeding in the San Francisco bay area is uncertain. Whether it becomes a sink or source will be dependent on whether winter-breeding monarchs can re-enter their migratory state during spring. However, endemic levels of infection by the protozoan parasite, Ophryocystis elektroscirrha (OE), are often high in winter-breeding monarchs which can limit migration success. The eventual co-existence of winter-breeding and non-breeding monarch populations in northern and central California is probable, with an optimistic view suggesting that the adaptability of the monarch butterfly will allow it to persist in a changed environment.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"8 1","pages":"19 - 26"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2021-0002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45027888","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

Differential migration in Pacific salmon and trout: Patterns and hypotheses 太平洋鲑鱼和鳟鱼的差异迁移:模式和假设

Animal Migration Pub Date : 2021-01-01 DOI: 10.1515/ami-2021-0001

T. Quinn

{"title":"Differential migration in Pacific salmon and trout: Patterns and hypotheses","authors":"T. Quinn","doi":"10.1515/ami-2021-0001","DOIUrl":"https://doi.org/10.1515/ami-2021-0001","url":null,"abstract":"Abstract Migrations affect the population dynamics, life history, evolution, and connections of animals to natural ecosystems and humans. Many species and populations display partial migration (some individuals migrate and some do not), and differential migration (migration distance varies). Partial migration is widely distributed in fishes but the term differential migration is much less commonly applied, despite the occurrence of this phenomenon. This paper briefly reviews the extent of differential migration in Pacific salmon and trout (genus Oncorhynchus), a very extensively studied group. Three hypotheses are presented to explain the patterns among species: 1) phylogenetic relationships, 2) the prevalence of partial migration (i.e., variation in anadromy), and 3) life history patterns (iteroparous or semelparous, and duration spent feeding at sea prior to maturation). Each hypothesis has some support but none is consistent with all patterns. The prevalence of differential migration, ranging from essentially non-existent to common within a species, reflects phylogeny and life history, interacting with the geographic features of the region where juvenile salmon enter the ocean. Notwithstanding the uncertain evolution of this behavior, it has very clear implications for salmon conservation, as it strongly affects exposure to predators, patterns of fishery exploitation and also uptake of toxic contaminants.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"8 1","pages":"1 - 18"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2021-0001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46790771","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

Understanding the dynamics of Arctic animal migrations in a changing world 了解不断变化的世界中北极动物迁徙的动态

Animal Migration Pub Date : 2021-01-01 DOI: 10.1515/ami-2020-0114

S. Davidson, Emily Cornelius Ruhs

引用次数: 2

Revealing migratory path, important stopovers and non-breeding areas of a boreal songbird in steep decline 揭示北方鸣禽急剧下降的迁徙路径、重要中途停留地和非繁殖区

Animal Migration Pub Date : 2021-01-01 DOI: 10.1515/ami-2020-0116

J. Hagelin, M. Hallworth, Christopher P. Barger, J. A. Johnson, Kristin A. DuBour, Grey W. Pendelton, L. Decicco, Laura A. McDuffie, Steven M. Matsuoka, Marian A. Snively, P. Marra, Audrey Taylor

{"title":"Revealing migratory path, important stopovers and non-breeding areas of a boreal songbird in steep decline","authors":"J. Hagelin, M. Hallworth, Christopher P. Barger, J. A. Johnson, Kristin A. DuBour, Grey W. Pendelton, L. Decicco, Laura A. McDuffie, Steven M. Matsuoka, Marian A. Snively, P. Marra, Audrey Taylor","doi":"10.1515/ami-2020-0116","DOIUrl":"https://doi.org/10.1515/ami-2020-0116","url":null,"abstract":"Abstract The Olive-sided Flycatcher (Contopus cooperi) is a steeply declining aerial insectivore with one of the longest migrations of any North American passerine. We deployed light-level geolocators and archival GPS tags on breeders in boreal Alaska to determine migratory routes, important stopovers and non-breeding locations. Data from 16 individuals revealed a median 23,555 km annual journey (range: 19,387, 27,292 km) over 95 days (range: 83, 139 days) with wintering occurring in three regions of South America (NW Colombia/Ecuador, central Peru and W Brazil/S Peru). We developed a new method to identify “Important Stopovers” by quantifying intensity of use (a function of bird numbers and stop durations) along migratory routes. We identified 13 Important Stopovers that accounted for ~66% of the annual migratory period, suggestive of refueling activities. Some sites coincided with key areas previously identified for other Neotropical-Nearctic migrants. Percent land “protected” at Important Stopovers, as defined by IUCN, ranged from 3.8% to 49.3% (mean [95% CI]: 17.3% [9.6, 25.0]). Total migration speed did not differ by season (median: 255 km day-1, range: 182, 295km day-1), despite greater spring travel distances. Birds with longer non-breeding periods, however, migrated north faster. Climate-driven mismatches in migratory timing may be less of a concern for western than for eastern flycatcher populations, given recent con-generic analyses (C. sordidulus, C. virens). However, accelerated high-latitude changes, may nonetheless impact boreal breeders.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"8 1","pages":"168 - 191"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47779539","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: 1

Migration strategies supporting salmonids in Arctic Rivers: A case study of Arctic Cisco and Dolly Varden 支持北极河流中鲑鱼的迁徙策略:北极思科和多莉·瓦尔登的案例研究

Animal Migration Pub Date : 2021-01-01 DOI: 10.1515/ami-2020-0115

M. Carey, V. V. von Biela, RANDY J. Brown, C. Zimmerman

{"title":"Migration strategies supporting salmonids in Arctic Rivers: A case study of Arctic Cisco and Dolly Varden","authors":"M. Carey, V. V. von Biela, RANDY J. Brown, C. Zimmerman","doi":"10.1515/ami-2020-0115","DOIUrl":"https://doi.org/10.1515/ami-2020-0115","url":null,"abstract":"Abstract Amphidromous fish such as Dolly Varden (Salvelinus malma) and Arctic Cisco (Coregonus autumnalis) have distinct life histories that facilitate their success in Arctic environments. Both species spawn in freshwater and make annual migrations between marine, brackish, or freshwater environments. Dolly Varden rear for one or more years in freshwater before migrating to sea whereas Arctic Cisco migrate to sea during their first summer. By contrast, Pacific salmon (Oncorhynchus spp.) spawn in freshwater, but once they smolt and go to sea they remain there until they mature and return to spawn. Salmon migrate at variable ages depending on species. Arctic marine environments offer productive food resources during summer, but during winter they are too cold for salmonids that lack antifreeze proteins. To avoid the cold sea during winter, Dolly Varden return to freshwater while Arctic Cisco overwinter in brackish estuaries. The lack of migration back to freshwater for overwintering helps explain why Pacific salmon success is limited in Arctic waters and suggests major increases in success will not be realized until Arctic seas provide suitable overwinter conditions. In this paper we contrast these migration strategies, discuss potential changes in a warming Arctic, and highlight information needs especially for juvenile fish.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"8 1","pages":"132 - 143"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48238447","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

Fuel loads of Neotropical migrant songbirds on autumn passage through the Darién region of Colombia: Influence of migratory distance, route, ENSO, age and body size 新热带迁徙鸣禽秋季穿越哥伦比亚达连地区的燃料负荷：迁徙距离、路线、ENSO、年龄和体型的影响

Animal Migration Pub Date : 2021-01-01 DOI: 10.1515/ami-2020-0105

Laura Cárdenas-Ortíz, Nicholas J. Bayly, K. Hobson

{"title":"Fuel loads of Neotropical migrant songbirds on autumn passage through the Darién region of Colombia: Influence of migratory distance, route, ENSO, age and body size","authors":"Laura Cárdenas-Ortíz, Nicholas J. Bayly, K. Hobson","doi":"10.1515/ami-2020-0105","DOIUrl":"https://doi.org/10.1515/ami-2020-0105","url":null,"abstract":"Abstract Available energy stores determine stopover length, migration speed and likely survival in migrating birds. We measured energy stores by estimating fuel load in 11 species of Neotropical migrant songbirds in the Darién of Colombia over five years. We evaluated 1) whether individuals flying further from breeding origin arrived with smaller fuel loads, 2) if the ENSO (El Niño-Southern Oscillation) cycle affected fuel load and 3) if species known to migrate mostly overwater arrived with less fuel relative to those migrating overland. Breeding origin, inferred from feather δ2H values, only had a significant positive effect on fuel load in Swainson’s Thrush (Catharus ustulatus). Veery (Catharus fuscescens) and Swainson’s thrush had higher and lower fuel loads, respectively, in El Niño years. Multi-species mixed-effects models revealed support for larger fuel loads in larger-bodied species and in species taking overwater routes, contrary to our prediction. Across species, we found no support for common effects of breeding origin or ENSO on fuel loads, in contrast to community-wide effects of migration route and body-size. In general, the variables considered here explained little of the variance in fuel loads, suggesting that inter-individual differences likely have a greater impact than broad-scale factors in our study system.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"8 1","pages":"29 - 39"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2020-0105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45513836","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: 1

Flexibility in migratory strategy contrasts with reliance on restricted staging and overwintering grounds for Sabine’s gulls from the Canadian High Arctic 迁徙策略的灵活性与来自加拿大北极高地的萨宾海鸥依赖于有限的阶段和越冬地形成鲜明对比

Animal Migration Pub Date : 2021-01-01 DOI: 10.1515/ami-2020-0106

S. Gutowsky, S. Davis, M. Maftei, M. Mallory

{"title":"Flexibility in migratory strategy contrasts with reliance on restricted staging and overwintering grounds for Sabine’s gulls from the Canadian High Arctic","authors":"S. Gutowsky, S. Davis, M. Maftei, M. Mallory","doi":"10.1515/ami-2020-0106","DOIUrl":"https://doi.org/10.1515/ami-2020-0106","url":null,"abstract":"Abstract Sabine’s gulls (Xema sabini) undertake the longest migration of any gull, a trans-equatorial journey between Arctic breeding and southern hemisphere wintering areas. For such long-distance migrants, quantifying within- and between-individual variation in migratory strategy is key towards understanding resilience to environmental variability encountered over migration. We tracked 22 birds on 32 migrations from the Canadian Arctic to evaluate strategies and quantify flexibility among individuals and years. All birds undertook extended stopovers in a geographically-restricted staging area halfway through migration in the California Current System in both directions. Individuals were otherwise flexible in most aspects of migration but were repeatable in arrival date and duration of the southbound staging phase. Routes taken during southbound migration and overlap in overwintering areas were significantly larger within the same year than among years. Overall, birds showed high individual flexibility in migratory strategies but made similar decisions to one another in the same years. Every year, all birds showed repeatable, consistent reliance on the staging grounds as a key stopover site in both directions. This suggests Sabine’s gulls adjust to environmental change in many aspects of their migration but may be vulnerable to climate change and other anthropogenic influences during critical stages of the journey.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"8 1","pages":"84 - 97"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47412620","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: 1

Intrinsic Markers Reveal Breeding Origin and Geographically-Structured Migration Timing of Two Songbird Species at a Coastal Stopover Site 内在标记揭示了两种鸣禽在沿海停靠点的繁殖起源和地理结构迁移时间

Animal Migration Pub Date : 2020-01-01 DOI: 10.1515/ami-2020-0005

Jennifer R. Smetzer, David I. King

{"title":"Intrinsic Markers Reveal Breeding Origin and Geographically-Structured Migration Timing of Two Songbird Species at a Coastal Stopover Site","authors":"Jennifer R. Smetzer, David I. King","doi":"10.1515/ami-2020-0005","DOIUrl":"https://doi.org/10.1515/ami-2020-0005","url":null,"abstract":"Abstract We used stable hydrogen isotope markers to identify geographic provenance of Blackpoll Warblers (Setophaga striata) and Red-eyed Vireos (Vireo olivaceus) passing through a coastal stopover area in the Gulf of Maine on fall migration, and supplemented δ2 H signatures from feathers with wing length data as an additional proxy for migration origin, since geographic size variation has been documented for this species. We captured migrant blackpolls with putative origins from as close as the Adirondacks, New Brunswick, and northwestern Maine, and potentially as far as Alaska. We captured vireos with putative origins from as close as Maine and Nova Scotia, and potentially as far as British Columbia and Alberta. We found a significant relationship between blackpoll wing length and capture date indicating that birds with longer wings– and thus likely from more western and northern breeding regions – passed through the capture site earlier in the season than more local breeders. In contrast, vireos from more distant breeding latitudes passed through the capture site later in the season. These results demonstrate that mid-coast Maine serves as a catchment area for both Blackpoll Warblers, and Red-eyed Vireos, and provides some evidence that connectivity between breeding areas and stopover sites may be strong for blackpolls; however, additional study linking breeding and stopover sites across the migratory range of both species is necessary to understand more fully how strong connectivity is between breeding and stopover areas for these species.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"7 1","pages":"42 - 51"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2020-0005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47171344","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

Exploring Overlap of Feather Molting and Migration in Tundra Swans Using δ2H Analysis 用δ2H分析探讨冻土带天鹅羽毛换羽和迁徙的重叠

Animal Migration Pub Date : 2020-01-01 DOI: 10.1515/ami-2020-0102

Nathan Wolf, T. S. Smeltz, J. Welker, M. Rogers, C. Ely

{"title":"Exploring Overlap of Feather Molting and Migration in Tundra Swans Using δ2H Analysis","authors":"Nathan Wolf, T. S. Smeltz, J. Welker, M. Rogers, C. Ely","doi":"10.1515/ami-2020-0102","DOIUrl":"https://doi.org/10.1515/ami-2020-0102","url":null,"abstract":"Abstract Determining the processes that shape the relative timing of energetically-costly events in the annual cycle of migrating birds is important to our understanding of avian phenology and ecology. We paired satellite tracking and hydrogen stable isotope analysis (δ2H) to examine the relative timing of two such events – migration and feather molting – in tundra swans from four breeding areas in Alaska, USA. Our results show a trend of increasing intra-individual variability in breast feather δ2H values with increasing migration distance, suggesting the overlap of breast feather molting and migration. However, when individual samples were pooled by breeding area, the δ2H values of breast and head feathers showed no trend with migration distance, presumably resulting from high levels of inter-individual variability in δ2H values within each breeding area. We explore potential reasons for this variability, propose potential mechanisms influencing feather δ2H values of tundra swans, and recommend further research into methods for exploring the temporal configuration of events in the annual cycle of migrating birds.","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"7 1","pages":"58 - 66"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2020-0102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42261814","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: 0

Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways 候鸟在非洲-欧亚西部飞行路线中的氮转移

Animal Migration Pub Date : 2020-01-01 DOI: 10.1515/ami-2020-0101

Sofia Varriano, Julie M. Mallon, Cody Folta, Hawa Coulibaly, Kevin J. Krajcir, Maureen R. McClung, W. Fagan, M. Moran

{"title":"Transfer of nitrogen by migratory birds in the African-Western Eurasian Flyways","authors":"Sofia Varriano, Julie M. Mallon, Cody Folta, Hawa Coulibaly, Kevin J. Krajcir, Maureen R. McClung, W. Fagan, M. Moran","doi":"10.1515/ami-2020-0101","DOIUrl":"https://doi.org/10.1515/ami-2020-0101","url":null,"abstract":"Abstract Migrating animals are known to play an important role in nutrient transfer over short distances; however, this phenomenon has not been well studied for long-distance migrants. In this preliminary study, we focused on nitrogen (N) transfer by 44 bird species that migrate from Eurasia to two regions in sub-Saharan Africa that fall into the lowest 10% quantile of global N-deposition (mean annual deposition ≤ 10.44 mg/m2/year). We estimated the number of birds that die during the non-breeding season in these areas and then used N content and species-specific mass values to calculate annual N-deposition rates. For these two areas of low N-deposition, we found that bird mortality contributed 0.2 – 1.1% of total nitrogen deposition, which is a relatively small proportion. Therefore, we conclude that nitrogen transfer by long-distance bird migrants using the East Atlantic Flyway and the West Asian-East African Flyway currently has limited impact on the sub-Saharan nitrogen cycle. However, it is worth noting that this impact may have been more important in the past due to larger bird populations and lower background N-deposition (i.e., less anthropogenic impact).","PeriodicalId":52354,"journal":{"name":"Animal Migration","volume":"7 1","pages":"52 - 57"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ami-2020-0101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49479237","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: 0