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Integrating host biological and ecological variables to predict probability of haemosporidian infection in raptors 综合宿主生物和生态变量预测猛禽感染血孢子虫的概率
IF 1.8 2区 生物学
Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100185
Kai Gao, Xuemei Yang, Xi Huang, Wenhong Deng
{"title":"Integrating host biological and ecological variables to predict probability of haemosporidian infection in raptors","authors":"Kai Gao,&nbsp;Xuemei Yang,&nbsp;Xi Huang,&nbsp;Wenhong Deng","doi":"10.1016/j.avrs.2024.100185","DOIUrl":"https://doi.org/10.1016/j.avrs.2024.100185","url":null,"abstract":"<div><p>Variations in host traits that influence their exposure and susceptibility may impact probability of vector-transmitted diseases. Therefore, identifying the predictors of infection probability is necessary to understand the risk of disease outbreaks during expanding environmental perturbation. Here, we conducted a large survey based on microscopic examination and molecular analysis of haemosporidian parasite infection in raptors rescued at the Beijing Raptor Rescue Centre. Combining these data with biological and ecological variables of the raptors, we determined predictors that affect the probability of haemosporidian infection using generalized linear mixed models and multimodel inference. Our results showed that infection probability exhibited considerable variation across host species in raptors, and body mass, sex, and evolutionary history played relatively weaker roles in driving infection probability. Instead, activity pattern, age, geographic range size, migration distance, and nest type were important predictors of the probability of haemosporidian infection, and the role of each predictor differed in the three main haemosporidian genera (<em>Plasmodium</em>, <em>Haemoproteus</em>, and <em>Leucocytozoon</em>). This macro-ecological analysis will add to our understanding of host traits that influence the probability of avian haemosporidian infection and will help inform risk of emerging diseases.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"15 ","pages":"Article 100185"},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000288/pdfft?md5=445b10c309412d5652723d092c744fff&pid=1-s2.0-S2053716624000288-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289152","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
Development and parentage analysis of SNP markers for Chestnut-vented Nuthatch (Sitta nagaensis) based on ddRAD-seq data 基于 ddRAD-seq 数据的栗香黄雀(Sitta nagaensis)SNP 标记的开发和亲缘关系分析
IF 1.8 2区 生物学
Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100179
Qingmiao Yuan , Xi Lu , Ruixin Mo , Xianyin Xu , Xu Luo , Yubao Duan
{"title":"Development and parentage analysis of SNP markers for Chestnut-vented Nuthatch (Sitta nagaensis) based on ddRAD-seq data","authors":"Qingmiao Yuan ,&nbsp;Xi Lu ,&nbsp;Ruixin Mo ,&nbsp;Xianyin Xu ,&nbsp;Xu Luo ,&nbsp;Yubao Duan","doi":"10.1016/j.avrs.2024.100179","DOIUrl":"https://doi.org/10.1016/j.avrs.2024.100179","url":null,"abstract":"<div><p>Extra-pair paternity (EPP) is commonly found in socially monogamous birds, especially in small passerine birds, and there are interspecific and intraspecific variations in the extent of EPP. The Chestnut-vented Nuthatch (<em>Sitta nagaensis</em>) is a socially monogamous passerine bird, and verifying whether this species has EPP relies on parentage testing—<em>S. nagaensis</em> is not known to have EPP. In this study, we developed SNP markers of this species that are informative for parentage analysis from double digest restriction site-associated DNA sequencing (ddRAD-seq) data. A panel consisting of 50 SNP markers, with a mean heterozygosity of 0.343, was used to resolve 95% of nestlings to fathers. The combined exclusion probabilities for the first parent and second parent were 0.991 and 0.9999, respectively. This panel of SNP markers is a powerful tool for parentage assignments in <em>S. nagaensis</em>. In addition, we found that three offspring (7.9%) from three nests (23.1%) were the result of extra-pair fertilization out of 38 offspring in 13 nests. Our study provided information on parentage analysis that has not been reported before in <em>S. nagaensis.</em> It also supplemented the understudied EPP behavior of birds in Asia, contributing to a general understanding of the EPP behaviors of birds.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"15 ","pages":"Article 100179"},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000227/pdfft?md5=416f211ac135508ff7220b5fd91e7bf3&pid=1-s2.0-S2053716624000227-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140905514","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
Does social information affect the settlement decisions of resident birds in their second breeding attempt? A case study of the Japanese Tit (Parus minor) 社会信息会影响留鸟第二次繁殖时的定居决定吗?日本山雀(Parus minor)案例研究
IF 1.6 2区 生物学
Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100198
Xudong Li , Jiangping Yu , Dake Yin , Longru Jin , Keqin Zhang , Li Shen , Zheng Han , Haitao Wang
{"title":"Does social information affect the settlement decisions of resident birds in their second breeding attempt? A case study of the Japanese Tit (Parus minor)","authors":"Xudong Li ,&nbsp;Jiangping Yu ,&nbsp;Dake Yin ,&nbsp;Longru Jin ,&nbsp;Keqin Zhang ,&nbsp;Li Shen ,&nbsp;Zheng Han ,&nbsp;Haitao Wang","doi":"10.1016/j.avrs.2024.100198","DOIUrl":"10.1016/j.avrs.2024.100198","url":null,"abstract":"<div><p>Individuals may gather information about environmental conditions when deciding where to breed in order to maximize their lifetime fitness. They can obtain social information by observing conspecifics and heterospecifics with similar ecological needs. Many studies have shown that birds can rely on social information to select their nest sites. The location of active nests and the reproductive success of conspecifics and heterospecifics can provide accurate predictions about the quality of the breeding habitat. Some short-lived species can facultatively reproduce two and/or more times within a breeding season. However, few studies have focused on how multiple-brooding individuals select nest sites for their second breeding attempts. In this study, we use long-term data to test whether the Japanese Tit (<em>Parus minor</em>) can use social information from conspecifics and/or heterospecifics (the Eurasian Nuthatch <em>Sitta europaea</em>, the Daurian Redstart <em>Phoenicurus auroreus</em> and the Yellow-rumped Flycatcher <em>Ficedula zanthopygia</em>) to select a nest site for the second breeding attempt. Our results showed that the nest boxes occupied by tits on their second breeding attempt tended to be surrounded by more breeding conspecific nests, successful first nests of conspecifics, and fewer failed first nests of conspecifics than the nest boxes that remained unoccupied (the control group). However, the numbers of breeding heterospecific nests, successful heterospecific nests, and failed heterospecific nests did not differ between the nest boxes occupied by tits on their second breeding attempt and the unoccupied nest boxes. Furthermore, the tits with local successful breeding experience tended to choose areas with more successful first nests of conspecifics than those without successful breeding experience. Thus, we suggest that conspecifics' but not heterospecifics’ social information within the same breeding season is the major factor influencing the nest site selection of Japanese Tits during second breeding attempts.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"15 ","pages":"Article 100198"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000410/pdfft?md5=976b1d991d9e91df93e57317aa64f90e&pid=1-s2.0-S2053716624000410-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141841680","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
Seasonal increase in nest defense, but not egg rejection, in a cuckoo host 布谷鸟宿主的巢穴防御季节性增强,但不排斥鸟蛋
IF 1.8 2区 生物学
Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2023.100154
Bo Zhou , Wei Liang
{"title":"Seasonal increase in nest defense, but not egg rejection, in a cuckoo host","authors":"Bo Zhou ,&nbsp;Wei Liang","doi":"10.1016/j.avrs.2023.100154","DOIUrl":"10.1016/j.avrs.2023.100154","url":null,"abstract":"<div><p>The interactions between avian brood parasites and their hosts provide an informative and easy-to-handle system for studying coevolution. Avian brood parasitism reduces the reproductive success of hosts, and thus, hosts have evolved anti-parasitic strategies, such as rejecting parasitic eggs and adopting aggressive nest defense strategies, to avoid the cost brought on by brood parasitism. To test whether host anti-parasitic strategies are adjusted with the risk of being parasitized when the breeding seasons of brood parasites and hosts are not synchronous, we conducted a field experiment assessing nest defense and egg recognition behaviors of the Isabelline Shrike (<em>Lanius isabellinus</em>), a host of the Common Cuckoo (<em>Cuculus canorus</em>). In the local area, the host Isabelline Shrike begins to breed in April, whereas the summer migratory Common Cuckoo migrates to the local area in May and begins to lay parasitic eggs. Results showed that nest defense behaviors of the Isabelline Shrike increases significantly after cuckoo arrival, showing higher aggressiveness to cuckoo dummies, with no significant difference in attack rates among cuckoo, sparrowhawk and dove dummies, but their egg rejection did not change significantly. These results imply that Isabelline Shrikes may adjust their nest defense behavior, but not egg rejection behavior, with seasonality.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"15 ","pages":"Article 100154"},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716623000804/pdfft?md5=b357d63e7edbec145fd62805c1e6c312&pid=1-s2.0-S2053716623000804-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139069035","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
Deterministic processes drive turnover-dominated beta diversity of breeding birds along the central Himalayan elevation gradient 喜马拉雅山脉中部海拔梯度地区繁殖鸟类贝塔多样性的决定性驱动过程
IF 1.8 2区 生物学
Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100170
Zhifeng Ding , Jianchao Liang , Le Yang , Cong Wei , Huijian Hu , Xingfeng Si
{"title":"Deterministic processes drive turnover-dominated beta diversity of breeding birds along the central Himalayan elevation gradient","authors":"Zhifeng Ding ,&nbsp;Jianchao Liang ,&nbsp;Le Yang ,&nbsp;Cong Wei ,&nbsp;Huijian Hu ,&nbsp;Xingfeng Si","doi":"10.1016/j.avrs.2024.100170","DOIUrl":"10.1016/j.avrs.2024.100170","url":null,"abstract":"<div><p>Beta diversity, the variation of community composition among sites, bridges alpha and gamma diversity and can reveal the mechanisms of community assembly through applying distance-decay models and/or partitioning beta diversity into turnover and nestedness components from functional and phylogenetic perspectives. Mountains as the most natural experiment system provide good opportunities for exploring beta diversity patterns and the underlying ecological processes. Here, we simultaneously consider distance-decay models and multiple dimensions of beta diversity to examine spatial variations of bird communities, and to evaluate the relative importance of niche-based and neutral community assembly mechanisms along a 3600-m elevational gradient in the central Himalayas, China. Our results showed that species turnover dominates taxonomic, functional, and phylogenetic beta diversity. We observed strongest evidence of spatial distance decays in taxonomic similarities of birds, followed by its phylogenetic and functional analogues. Turnover component was highest in taxonomic beta diversity, while nestedness component was highest in functional beta diversity. Further, all correlations of assemblage similarity with climatic distance were higher than that with spatial distances. Standardized values of overall taxonomic, functional, and phylogenetic beta diversity and their turnover components increase with increasing elevational distance, while the standardized values of taxonomic and phylogenetic nestedness decreased with increasing elevational distance. Our results highlighted the niche-based deterministic processes in shaping elevational bird diversity patterns that were determined by the relative roles of decreasing trend of environmental filtering and increasing trend of limiting similarity along elevation distances.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"15 ","pages":"Article 100170"},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000136/pdfft?md5=534b811d9c9ca831e7693e73e9c91bc3&pid=1-s2.0-S2053716624000136-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140152444","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
Proximity to corridors benefits bird communities in vegetated interrow vineyards in Mendoza, Argentina 靠近走廊有利于阿根廷门多萨植被间行葡萄园中的鸟类群落
IF 1.8 2区 生物学
Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100174
Andrea Paula Goijman , Agustín Zarco
{"title":"Proximity to corridors benefits bird communities in vegetated interrow vineyards in Mendoza, Argentina","authors":"Andrea Paula Goijman ,&nbsp;Agustín Zarco","doi":"10.1016/j.avrs.2024.100174","DOIUrl":"https://doi.org/10.1016/j.avrs.2024.100174","url":null,"abstract":"<div><p>Management under ecological schemes and increasing habitat heterogeneity, are essential for enhancing biodiversity in vineyards. Birds provide several contributions to agriculture, for example pest control, recreation and enhancing human mental health, and have intrinsic value. Birds are also ideal model organisms because they are easy to survey, and species respond differently to agricultural land use at different scales. Vegetated borders of crops are key for many species of birds, and distance to the border have been found to be an important factor in vineyard-dominated agroecosystems. We evaluate if there are differences in the bird assemblage, between the interior compared to borders within vineyards, using a hierarchical community occupancy model. We hypothesized that occupancy of birds is greater in environments with greater heterogeneity, which in this study was considered to be contributed by the proximity to vegetated corridors. We expected that vineyard borders close to corridors will have higher bird occupancy than the center of the vineyard. The research was conducted in three vineyards with biodiversity-friendly management practices, in Gualtallary, Mendoza, Argentina. Bird surveys were conducted over three breeding seasons from 2018 to 2020. Occupancy and richness of the bird community was more closely associated with the borders adjacent to the corridors than with the interior of the vineyards, as we initially predicted, although the assemblage of birds did not differ much. More than 75% of the registered species consume exclusively or partially invertebrates. Biodiversity-friendly management and ecological schemes, together with vegetated corridors provide multiple benefits for biodiversity conservation. These approaches not only minimize the use of agrochemicals but also prioritize soil cover with spontaneous vegetation, which supports a diverse community of insectivorous bird species, potentially contributing to pest control.</p></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"15 ","pages":"Article 100174"},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2053716624000173/pdfft?md5=ae36cc01ec26badcd29eb29453a038d9&pid=1-s2.0-S2053716624000173-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140632996","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
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,&nbsp;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":"15 ","pages":"Article 100189"},"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
Mitogenomic variation in the Black-throated Tit (Aegithalos concinnus): Conserved structure, concerted evolution of duplicate control regions and multiple distinct evolutionary lineages 黑喉山雀(Aegithalos concinnus)的有丝分裂基因组变异:保守的结构、重复控制区的协同进化和多个不同的进化系
IF 1.6 2区 生物学
Avian Research Pub Date : 2024-01-01 DOI: 10.1016/j.avrs.2024.100210
Chuanyin Dai , Fumin Lei
{"title":"Mitogenomic variation in the Black-throated Tit (Aegithalos concinnus): Conserved structure, concerted evolution of duplicate control regions and multiple distinct evolutionary lineages","authors":"Chuanyin Dai ,&nbsp;Fumin Lei","doi":"10.1016/j.avrs.2024.100210","DOIUrl":"10.1016/j.avrs.2024.100210","url":null,"abstract":"<div><div>The mitochondrial genome is a prominent research topic due to its indispensable role in organisms and its application in many research disciplines. However, few studies have investigated intraspecies mitogenomic variation. In this study, 69 mitogenomes of the Black-throated Tit (<em>Aegithalos concinnus</em>) were assembled and annotated from a large number of short reads generated using high-throughput sequencing technology. Comparative analyses revealed that mitogenomic characteristics such as length, gene and nucleotide composition, codon usage, and duplicated control regions were relatively conserved despite substantial intraspecies morphological changes. Yet, all the individuals from the subspecies <em>A. c. iredalei</em> had one more nucleotide in the 12S rRNA than the other studied subspecies. Phylogenetic analyses showed five distinct lineages based on the complete mitogenomes and the 13 combined protein-coding genes, whereas only four lineages were observed when using the duplicate control regions. Most interestingly, each lineage had both copies of the control regions of the comprising individuals, indicating that the paralogous control regions were more similar than the orthologous sequences from the distinct lineages. This suggested the control regions had undergone concerted evolution. The Black-throated Tit has complex evolutionary history and needs further investigating the taxonomic status of these lineages, as well as the underlying evolutionary processes. Our findings call for more research on intraspecies mitogenomic variation.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"15 ","pages":"Article 100210"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662130","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,&nbsp;Rongmiao Zhang,&nbsp;Xiaoqian Li,&nbsp;Na Zhu,&nbsp;Yihang Huang,&nbsp;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":"15 ","pages":"Article 100193"},"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 ,&nbsp;Jing-An Liu ,&nbsp;Limin Wang ,&nbsp;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":"15 ","pages":"Article 100208"},"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
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