Avian Research最新文献_第4页

Nest decoration: Black feathers prevent Crested Mynas from nest usurpation 巢穴装饰黑色羽毛防止凤头鹆侵占巢穴

IF 1.8 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100189

Jinmei Liu, Wei Liang

{"title":"Nest decoration: Black feathers prevent Crested Mynas from nest usurpation","authors":"Jinmei Liu, Wei Liang","doi":"10.1016/j.avrs.2024.100189","DOIUrl":"https://doi.org/10.1016/j.avrs.2024.100189","url":null,"abstract":"<div><p>Nests are important structures for birds to raise their offspring and for signaling. Many birds incorporate feathers into the nest, since feathers were traditionally thought to serve the function of insulation. Hypotheses in recent years have considered that some birds place feathers in conspicuous locations in the nest for decoration to trigger a fear response in the competitors. In this study, we investigated whether decorative feathers could deter nest usurpation by Crested Mynas (<em>Acridotheres cristatellus</em>) by manipulating nest box contents. The results revealed that Crested Mynas preferred black feathers to white feathers as decorations and occupied nest boxes decorated with black feathers significantly less than those decorated with white feathers, suggesting that black decorative feathers in the nest could be more effective in preventing nest usurpation by Crested Mynas and that white decorative feathers may have other functions. The black feathers in the nest are prominently placed at the edge of the nest to convey the message that “this nest is occupied” or “the owner of this nest has been preyed upon” to visitor Crested Mynas, thus effectively preventing them from usurping the nest at a later stage.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S205371662400032X/pdfft?md5=539bdf8c7a5fe693a3eae088488f0048&pid=1-s2.0-S205371662400032X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141323280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Incubation temperature induced developmental plasticity of cold responsive physiological phenotypes in Japanese Quails 孵化温度诱导日本鹌鹑冷反应生理表型的发育可塑性

IF 1.6 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100193

Yingxin Kou, Rongmiao Zhang, Xiaoqian Li, Na Zhu, Yihang Huang, Shuping Zhang

{"title":"Incubation temperature induced developmental plasticity of cold responsive physiological phenotypes in Japanese Quails","authors":"Yingxin Kou, Rongmiao Zhang, Xiaoqian Li, Na Zhu, Yihang Huang, Shuping Zhang","doi":"10.1016/j.avrs.2024.100193","DOIUrl":"10.1016/j.avrs.2024.100193","url":null,"abstract":"<div><p>Embryonic development is a critical period for phenotype formation. Environmental variation during embryonic development can induce changes in postnatal phenotypes of animals. The thyroxine secretion and aerobic metabolic activity of small birds are important phenotypes closely related to their winter survival. In the context of climate change, it is necessary to determine whether temperature variation during incubation in birds leads to developmental plasticity of these cold responsive phenotypes. We incubated Japanese Quail (<em>Coturnix japonica</em>) eggs at 36.8 °C, 37.8 °C, and 38.8 °C, and raised the chicks to 35-day old at 22 °C with same raising conditions, then all the quails were exposed to gradually temperature dropping environment (from 15 °C to 0 °C). After cold treatment, serum T3 level, resting metabolic rate, skeletal muscle and liver metabolomes of the birds were measured. The serum T3 levels were significantly lower in the 38.8 °C group and significantly higher in the 36.8 °C group compared to the 37.8 °C group. The metabolic rate in the 38.8 °C group was significantly lower compared to the 37.8 °C group. Compared with the 37.8 °C group, metabolites involved in the tricarboxylic acid cycle in the liver were significantly lower in the 38.8 °C group, and metabolites related to lipid oxidation metabolism and fatty acid biosynthesis were significantly lower in the skeletal muscles in the 38.8 °C group but significantly higher in the 36.8 °C group. These results indicate that incubation temperature variation can lead to developmental plasticity in cold responsive physiological phenotypes. Higher incubation temperature may impair the capacity of birds coping with cold challenge.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000367/pdfft?md5=b22741680f5e15fd0175a80c96f4a7ad&pid=1-s2.0-S2053716624000367-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141622447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Avian hippocampus: Recent advances in anatomy and physiological functions 鸟类海马：解剖学和生理功能方面的最新进展

IF 1.6 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100208

Juyong Li , Jing-An Liu , Limin Wang , Dongming Li

{"title":"Avian hippocampus: Recent advances in anatomy and physiological functions","authors":"Juyong Li , Jing-An Liu , Limin Wang , Dongming Li","doi":"10.1016/j.avrs.2024.100208","DOIUrl":"10.1016/j.avrs.2024.100208","url":null,"abstract":"<div><div>The avian hippocampus, akin to its mammalian counterpart, plays a critical role in cognitive and physiological processes despite notable structural differences. Initially thought to be less developed, recent studies over the past two decades have revealed it as a complex brain region essential for diverse functions in both laboratory and free-living birds. This review synthesizes current knowledge on the avian hippocampus' organization, functionality, and neurophysiological significance. We first examine its anatomical structure and neuronal connectivity, comparing it with the mammalian hippocampus. We then highlight how its volume, neuronal density, and neurogenesis support spatial memory and navigation, influencing behaviors such as migration, food storing, brood parasitism, and homing. Beyond spatial functions, the avian hippocampus mediates emotion and stress physiology through interactions with the endocrine system, particularly via glucocorticoid receptors. It also influences spatial memory through sex hormones, especially estradiol, with local estrogen production through aromatase activity enhancing memory and plasticity. Therefore, the avian hippocampus serves as a central neural hub, integrating sensory information with internal states to facilitate essential behaviors and responses to external environmental stimuli. This review underscores the progress made in understanding this brain structure's roles, highlighting conserved neurophysiological functions across vertebrate taxa.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hard life for sons in the nest? Sex-dependent offspring mortality in Great Tits in urban and forest areas 儿子在巢中生活艰难？城市和森林地区大山雀随性别变化的后代死亡率

IF 1.8 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100169

Nóra Ágh , Henriett Anna Dalvári , Krisztián Szabó , Ivett Pipoly , András Liker

{"title":"Hard life for sons in the nest? Sex-dependent offspring mortality in Great Tits in urban and forest areas","authors":"Nóra Ágh , Henriett Anna Dalvári , Krisztián Szabó , Ivett Pipoly , András Liker","doi":"10.1016/j.avrs.2024.100169","DOIUrl":"10.1016/j.avrs.2024.100169","url":null,"abstract":"<div><p>Sex-biased mortality can occur in birds during development, for example due to sexual differences in energy requirement and/or environmental sensitivity, or the effects of sex hormones or sex differences in the expression of mutations linked to sex chromosomes. The extent of sex-bias in mortality may also be related to environmental conditions that influence offspring development and survival. Urban areas often provide poorer conditions for nestling development resulting in higher offspring mortality compared to natural areas, which may accelerate sex differences in offspring mortality in cities. To test this hypothesis, we examined the sex ratio of dead offspring in Great Tits (<em>Parus major</em>), using 427 samples of unhatched eggs and dead nestlings collected in two urban and two forest sites between 2013 and 2019. The ratio of males in the whole sample of dead offspring (56.9%) was significantly higher than expected by an 1:1 ratio, and the strongest sex biases were detected in urban areas (57.6% males) and in young nestlings (<14 days old, 59.0% males). However, the sex ratios of dead offspring did not differ significantly among study sites and between offspring developmental stages. 29.3% of unhatched eggs contained a visible embryo, and the proportion of embryo-containing unhatched eggs did not differ significantly between urban and forest study sites. These results suggest male-biased offspring mortality in Great Tits, and highlight the need of large datasets to detect subtle differences between habitats and developmental stages.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000124/pdfft?md5=215534bf0f4adb732a7c0c1739b55d25&pid=1-s2.0-S2053716624000124-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140054661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Population genomic data reveal low genetic diversity, divergence and local adaptation among threatened Reeves's Pheasant (Syrmaticus reevesii) 种群基因组数据揭示了濒临灭绝的李维斯野鸡（Syrmaticus reevesii）的低遗传多样性、分化和局部适应性

IF 1.8 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2023.100156

Qi Lu , Pengcheng Wang , Jiang Chang , De Chen , Shenghan Gao , Jacob Höglund , Zhengwang Zhang

{"title":"Population genomic data reveal low genetic diversity, divergence and local adaptation among threatened Reeves's Pheasant (Syrmaticus reevesii)","authors":"Qi Lu , Pengcheng Wang , Jiang Chang , De Chen , Shenghan Gao , Jacob Höglund , Zhengwang Zhang","doi":"10.1016/j.avrs.2023.100156","DOIUrl":"10.1016/j.avrs.2023.100156","url":null,"abstract":"<div><p>Population genomic data could provide valuable information for conservation efforts; however, limited studies have been conducted to investigate the genetic status of threatened pheasants. Reeves's Pheasant (<em>Syrmaticus reevesii</em>) is facing population decline, attributed to increases in habitat loss. There is a knowledge gap in understanding the genomic status and genetic basis underlying the local adaptation of this threatened bird. Here, we used population genomic data to assess population structure, genetic diversity, inbreeding patterns, and genetic divergence. Furthermore, we identified candidate genes linked with adaptation across the current distribution of Reeves's Pheasant. The present study assembled the first <em>de novo</em> genome sequence of Reeves's Pheasant and annotated 19,458 genes. We also sequenced 30 individuals from three populations (Dabie Mountain, Shennongjia, Qinling Mountain) and found that there was clear population structure among those populations. By comparing with other threatened species, we found that Reeves's Pheasants have low genetic diversity. Runs of homozygosity suggest that the Shennongjia population has experienced serious inbreeding. The demographic history results indicated that three populations experienced several declines during the glacial period. Local adaptative analysis among the populations identified 241 candidate genes under directional selection. They are involved in a large variety of processes, including the immune response and pigmentation. Our results suggest that the three populations should be considered as three different conservation units. The current study provides genetic evidence for conserving the threatened Reeves's Pheasant and provides genomic resources for global biodiversity management.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716623000828/pdfft?md5=6d6721caf38120ae008cab4159dd34af&pid=1-s2.0-S2053716623000828-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139068433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sounding the alarm: Functionally referential signaling in Azure-winged Magpie 敲响警钟蔚翅喜鹊的功能参照信号

IF 1.8 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100164

Xingyi Jiang, Yanyun Zhang

{"title":"Sounding the alarm: Functionally referential signaling in Azure-winged Magpie","authors":"Xingyi Jiang, Yanyun Zhang","doi":"10.1016/j.avrs.2024.100164","DOIUrl":"10.1016/j.avrs.2024.100164","url":null,"abstract":"<div><p>Functionally referential signals are a complex form of communication that conveys information about the external environment. Such signals have been found in a range of mammal and bird species and have helped us understand the complexities of animal communication. Corvids are well known for their extraordinary cognitive abilities, but relatively little attention has been paid to their vocal function. Here, we investigated the functionally referential signals of a cooperatively breeding corvid species, Azure-winged Magpie (<em>Cyanopica cyanus</em>). Through field observations, we suggest that Azure-winged Magpie uses referential alarm calls to distinguish two types of threats: ‘rasp’ calls for terrestrial threats and ‘chatter’ calls for aerial threats. A playback experiment revealed that Azure-winged Magpies responded to the two call types with qualitatively different behaviors. They sought cover by flying into the bushes in response to the ‘chatter’ calls, and flew to or stayed at higher positions in response to ‘rasp’ calls, displaying a shorter response time to ‘chatter’ calls. Significant differences in acoustic structure were found between the two types of calls. Given the extensive cognitive abilities of corvids and the fact that referential signals were once thought to be unique to primates, these findings are important for expanding our understanding of social communication and language evolution.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000070/pdfft?md5=507206db2ba16a204afacf7c20485a24&pid=1-s2.0-S2053716624000070-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139957041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Crested Ibises expanding to plain areas exhibit a higher tolerance of human proximity 扩展到平原地区的朱鹭对人类的接近表现出更高的容忍度

IF 1.8 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100165

Yuqi Zou , Yiting Jiang , Zitan Song , Xiaobin Fang , Changqing Ding

{"title":"The Crested Ibises expanding to plain areas exhibit a higher tolerance of human proximity","authors":"Yuqi Zou , Yiting Jiang , Zitan Song , Xiaobin Fang , Changqing Ding","doi":"10.1016/j.avrs.2024.100165","DOIUrl":"10.1016/j.avrs.2024.100165","url":null,"abstract":"<div><p>Animals must strike a balance between anti-predation behavior and other essential behaviors, such as foraging. Within the same species, strategies may vary on individuals' risk-taking preferences, and in this process the environment is a determinant, in addition to predator regime. The Crested Ibis (<em>Nipponia nippon</em>) exhibits such tendency. This is an endangered species, once inhabiting exclusively in China's Qinling Mountain. This used to be the sole remaining wild population. However, over recent decades, this population has expanded. A portion has relocated to breed in the lower plain area, which is characterized by elevated level of human activities and landscape complexity. We used flight initiation distance (FID) as an indicator of the ibises' risk-taking preference, particularly their response to human proximity. Additionally, we examined the environmental factors influencing their foraging site selection, including altitude, terrain openness, human activity intensity and human construction. Our findings revealed a significantly shorter FID among individuals relocating to plain habitats, indicating a higher tolerance of human proximity. The results showed that FID decreased with distance to the nearest human settlement. Another finding is that FID was independent of instant human activity intensity and environmental factors (altitude and terrain openness). These different may arise from various combinations of human activity, predation risk, and food abundance within the two habitats. These results provide insights into the <em>in</em> <em>situ</em> conservation of the threatened species within the context of global urbanization.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000082/pdfft?md5=c78d58014bcc8a8a4b6b114e98850236&pid=1-s2.0-S2053716624000082-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140004614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Combining video and GPS-tracking to study the spatial foraging distribution of a single-prey loading seabird 结合视频和 GPS 跟踪研究单猎物装载海鸟的空间觅食分布

IF 1.6 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100196

Ruben C. Fijn , Wouter Courtens , Bas W.R. Engels , Emiel E. van Loon , Judy Shamoun-Baranes

{"title":"Combining video and GPS-tracking to study the spatial foraging distribution of a single-prey loading seabird","authors":"Ruben C. Fijn , Wouter Courtens , Bas W.R. Engels , Emiel E. van Loon , Judy Shamoun-Baranes","doi":"10.1016/j.avrs.2024.100196","DOIUrl":"10.1016/j.avrs.2024.100196","url":null,"abstract":"<div><p>Seabirds are valuable indicators of marine ecosystem processes and studying seabird diets can shed light on natural or human-induced variability in food-web composition. Specifically single-prey loading seabird species such as terns have the potential to act as visual sentinels of prey availability offshore. However, obtaining diet information from remote bird colonies is often challenging and time consuming. In this pilot study we present a novel approach to combine two established methods to study seabird foraging ecology, providing a powerful and cost-effective tool to study the distribution of prey items available to seabirds. We combined GPS tracking data of Sandwich Terns (<em>Thalasseus sandvicensis</em>) with prey-observations from a hide in 2012 and 2013, and from semi-continuously recorded camera footage in 2017. By doing so, we identified 115 approximate catch locations of prey (86 herring/sprat Clupeidae, 29 sandeel Ammodytidae). Combining GPS-data and prey observations yielded detailed knowledge on the movements and chick diets of tracked birds as well as the spatial origin and lengths of captured prey items. Further catch distances of both Clupeidae and Ammodytidae resulted in deliveries of larger prey items and thus higher energy yield per trip, but also a higher energy expenditure per trip. We discuss the limitations and potential of our methodological approach to study foraging energetics during chick-provisioning of seabirds that carry prey items visible in their beaks.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000392/pdfft?md5=7f2ace86a3c2eda53262aa2d614e3128&pid=1-s2.0-S2053716624000392-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141852977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bird species (Charadriiformes) does not impact endosymbiotic bacteria (Gammaproteobacteria) of their ectoparasites (Insecta: Phthiraptera: Ischnocera) 鸟类（Charadriiformes）不会影响其体外寄生虫（Insecta: Phthiraptera: Ischnocera）的内共生细菌（Gammaproteobacteria）。

IF 1.6 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100206

Alexandra A. Grossi , Min Zhang , Fasheng Zou , Daniel R. Gustafsson

{"title":"Bird species (Charadriiformes) does not impact endosymbiotic bacteria (Gammaproteobacteria) of their ectoparasites (Insecta: Phthiraptera: Ischnocera)","authors":"Alexandra A. Grossi , Min Zhang , Fasheng Zou , Daniel R. Gustafsson","doi":"10.1016/j.avrs.2024.100206","DOIUrl":"10.1016/j.avrs.2024.100206","url":null,"abstract":"<div><p>Endosymbiotic bacteria of insects can facilitate host expansion into novel niches by providing their host with a fitness benefit such as vitamins or amino acids that are otherwise lacking in their hosts' diet. This close association can lead to cospeciation between insects and their symbionts; however, the symbionts’ small genome size leaves it susceptible to genome derogation which can result in symbiont replacement. Here, we screen chewing lice infesting shorebirds and terns to see what endosymbiotic bacteria are present, and build a summary phylogeny that includes louse endosymbiont sequences from this study as well as those from other louse genera, insects and bacteria strains from GenBank. We found a <em>Sodalis</em>-allied endosymbiont in <em>Carduiceps</em>, <em>Lunaceps</em>, <em>Quadraceps</em>, and <em>Saemundssonia</em>, as well as symbionts belonging to the family Enterobacteriaceae in <em>Lunaceps</em>, and <em>Quadraceps</em>. No louse species were host to both endosymbionts; however, the birds Kentish Plover (<em>Charadrius alexandrinus</em>) and Greater Crested Tern (<em>Thalasseus bergii</em>) were host to two genera of lice, each of which was infested with a different group of endosymbionts. In the summary phylogeny the endosymbionts from shorebirds, and tern lice did not form a monophyletic group, and therefore likely acquired their bacterial endosymbionts multiple times.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000495/pdfft?md5=1d4d89ac48675a7623dd14e619ebee3a&pid=1-s2.0-S2053716624000495-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142172509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Annual variation of adult survival of a south-temperate House Wren population in Argentina 阿根廷南温带鹪鹩种群成年存活率的年度变化

IF 1.8 2区生物学

Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100180

Gustavo J. Fernández , Mariana E. Carro , Paulo E. Llambías

{"title":"Annual variation of adult survival of a south-temperate House Wren population in Argentina","authors":"Gustavo J. Fernández , Mariana E. Carro , Paulo E. Llambías","doi":"10.1016/j.avrs.2024.100180","DOIUrl":"https://doi.org/10.1016/j.avrs.2024.100180","url":null,"abstract":"<div><p>Identifying factors affecting the survival of individuals is essential for understanding the evolution of life-history traits and population dynamics. Despite numerous studies on this subject in north-temperate environments, there is a lack of equivalent studies at similar latitudes in the south. Here, we used a 14-year dataset of capture, banding, and resighting to estimate the annual variation in the apparent adult survival probability of a south-temperate population of House Wrens (<em>Troglodytes aedon bonariae</em>). We evaluated temporal variation in survival and the effect of environmental (climatic) and demographic variables (adult abundance, total number of fledglings produced during each breeding season) on survival estimators. We found that the probability of adult survival decreased as the abundance of breeding adults increased. This density-dependent effect could be related to the resident lifestyle of southern House Wrens, which could determine an intense competition for territories and resources that ultimately would affect their survival.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000239/pdfft?md5=7f8e7cd623a93485d45351e60cd89de5&pid=1-s2.0-S2053716624000239-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140901821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0