N. Bedere, Joëlle Dupont, Y. Baumard, Christophe Staub, D. Gourichon, Elleboudt Frédéric, Pascale Le Roy, Tatiana Zerjal
In this study, we pursued three primary objectives: firstly to test and validate the pheno-typing of backfat thickness as an indicator of the overall fatness of laying hens; secondly, to estimate genetic parameters for this trait; thirdly, to study the phenotypic and genetic relationships between this trait and other traits related to production and body composition. To address these questions, hens from two lines under divergent selection for residual feed intake, were phenotyped for body weight, body composition traits (backfat, total fat volume, and blood adipokines levels), and egg number. Linear mixed models enabled to estimate variance components and calculate
{"title":"Genetic background of body reserves in laying hens through backfat thickness phenotyping","authors":"N. Bedere, Joëlle Dupont, Y. Baumard, Christophe Staub, D. Gourichon, Elleboudt Frédéric, Pascale Le Roy, Tatiana Zerjal","doi":"10.24072/pcjournal.412","DOIUrl":"https://doi.org/10.24072/pcjournal.412","url":null,"abstract":"In this study, we pursued three primary objectives: firstly to test and validate the pheno-typing of backfat thickness as an indicator of the overall fatness of laying hens; secondly, to estimate genetic parameters for this trait; thirdly, to study the phenotypic and genetic relationships between this trait and other traits related to production and body composition. To address these questions, hens from two lines under divergent selection for residual feed intake, were phenotyped for body weight, body composition traits (backfat, total fat volume, and blood adipokines levels), and egg number. Linear mixed models enabled to estimate variance components and calculate","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"17 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140744060","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}
This paper reports on the creation and use of a web database designed as part of the TiMMA project with the Content Management System Omeka S. Rather than resulting in a technical manual, its goal is to analyze the relevance of using Omeka S in the frame of a post-excavation project, gathering a wide team of researchers from several countries, working in their own language and having their own specialty. Designed to assist organizations and institutions in creating and managing digital collections, Omeka S offers a number of commodities from the perspective of both the administrator(s) and the users, the most significant being its efficiency in capitalizing on linked data standards for items description. Additionally, one of the successful achievements of this platform is to benefit the open-science tools more broadly, permitting for instance, as was done in this project, to import images with the iiiF API and bibliographical references with the Zotero module, thus avoiding the creation of new digital files and metadata. Designed with simplicity in mind, the graphic interface of Omeka S makes it a particularly appropriate tool for
本文介绍了在 TiMMA 项目中使用内容管理系统 Omeka S 创建和使用网络数据库的情况。本文的目的不是编写技术手册，而是分析在发掘后项目框架内使用 Omeka S 的相关性，该项目汇集了来自多个国家的研究人员，他们使用各自的语言和专业开展工作。Omeka S 的设计目的是帮助组织和机构创建和管理数字藏品，从管理员和用户的角度来看，它提供了许多商品，其中最重要的是它在利用链接数据标准进行物品描述方面的便利性。此外，该平台的成功之处还在于为开放科学工具提供了更广泛的帮助，例如，在本项目中，可以使用 iiiF API 导入图像，使用 Zotero 模块导入参考文献，从而避免创建新的数字文件和元数据。Omeka S 的图形界面以简洁为设计理念，使其成为特别适合以下用途的工具
{"title":"Dealing with post-excavation data: the Omeka S TiMMA web-database","authors":"Bastien Rueff","doi":"10.24072/pcjournal.366","DOIUrl":"https://doi.org/10.24072/pcjournal.366","url":null,"abstract":"This paper reports on the creation and use of a web database designed as part of the TiMMA project with the Content Management System Omeka S. Rather than resulting in a technical manual, its goal is to analyze the relevance of using Omeka S in the frame of a post-excavation project, gathering a wide team of researchers from several countries, working in their own language and having their own specialty. Designed to assist organizations and institutions in creating and managing digital collections, Omeka S offers a number of commodities from the perspective of both the administrator(s) and the users, the most significant being its efficiency in capitalizing on linked data standards for items description. Additionally, one of the successful achievements of this platform is to benefit the open-science tools more broadly, permitting for instance, as was done in this project, to import images with the iiiF API and bibliographical references with the Zotero module, thus avoiding the creation of new digital files and metadata. Designed with simplicity in mind, the graphic interface of Omeka S makes it a particularly appropriate tool for","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"10 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139602552","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}
F. Touzalin, Eric J. Petit, Emmanuelle Cam, Claire Stagier, E. Teeling, S. Puechmaille
1. The development of methods for individual identification in wild species and the refinement of Capture-Mark-Recapture (CMR) models over the past few decades have greatly improved the assessment of population demographic rates to address ecological and conservation questions. In particular, multi-state models, which offer flexibility in analysing complex study systems, have gained popularity within the ecological community. In this study, we focus on the issue of mark loss and the associated recycling of remarked individuals, which requires further exploration given the increasing use of these models. 2. To fill this knowledge gap, we employed a wide range of simulation scenarios that reflect commonly encountered real case studies, drawing inspiration from the
{"title":"Mark loss can strongly bias estimates of demographic rates in multi-state models: a case study with simulated and empirical datasets","authors":"F. Touzalin, Eric J. Petit, Emmanuelle Cam, Claire Stagier, E. Teeling, S. Puechmaille","doi":"10.24072/pcjournal.348","DOIUrl":"https://doi.org/10.24072/pcjournal.348","url":null,"abstract":"1. The development of methods for individual identification in wild species and the refinement of Capture-Mark-Recapture (CMR) models over the past few decades have greatly improved the assessment of population demographic rates to address ecological and conservation questions. In particular, multi-state models, which offer flexibility in analysing complex study systems, have gained popularity within the ecological community. In this study, we focus on the issue of mark loss and the associated recycling of remarked individuals, which requires further exploration given the increasing use of these models. 2. To fill this knowledge gap, we employed a wide range of simulation scenarios that reflect commonly encountered real case studies, drawing inspiration from the","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"16 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138950442","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}
The Go!Digital 3.0 project IUENNA—an acronym for “open I ng the so U th E rn jau N tal as a micro-regio N for future A rchaeology”—adopts a comprehensive open science methodology and concentrates on the archaeological micro-region of the Jauntal/Podjuna Valley in Carinthia, Austria. Key case studies include the Hemmaberg/gora svete Heme site and its associated locations: Globasnitz/Globasnica/Iuenna, Jaunstein/Podjuna, and St. Ste-fan/Šteben. The Hemmaberg site is among the most extensively researched Late Antique hilltop settlements—dating from the 4 th to the 6 th century AD—and serves as a primary research focus. This site moreover functions as a crucial reference point for early Christianity in the Southeast Alpine region and boasts a rich array of features
Go! Digital 3.0 项目 IUENNA--"open I ng the so U th E rn jau N tal as a micro-regio N for future A rchaeology "的首字母缩写--采用了一种全面的开放科学方法，集中研究奥地利克恩顿州 Jauntal/Podjuna 山谷的考古微型区域。主要案例研究包括 Hemmaberg/gora svete Heme 遗址及其相关地点：Globasnitz/Globasnica/Iuenna, Jaunstein/Podjuna 和 St.海马伯格遗址是研究最为广泛的晚期古代山顶定居点之一，其历史可追溯到公元 4 世纪至 6 世纪，也是主要的研究重点。此外，该遗址还是东南阿尔卑斯山地区早期基督教的重要参照点，并拥有丰富的特征
{"title":"IUENNA – openIng the soUthErn jauNtal as a micro-regioN for future Archaeology: A «para-description»","authors":"Dominik Hagmann, Franziska Reiner","doi":"10.24072/pcjournal.338","DOIUrl":"https://doi.org/10.24072/pcjournal.338","url":null,"abstract":"The Go!Digital 3.0 project IUENNA—an acronym for “open I ng the so U th E rn jau N tal as a micro-regio N for future A rchaeology”—adopts a comprehensive open science methodology and concentrates on the archaeological micro-region of the Jauntal/Podjuna Valley in Carinthia, Austria. Key case studies include the Hemmaberg/gora svete Heme site and its associated locations: Globasnitz/Globasnica/Iuenna, Jaunstein/Podjuna, and St. Ste-fan/Šteben. The Hemmaberg site is among the most extensively researched Late Antique hilltop settlements—dating from the 4 th to the 6 th century AD—and serves as a primary research focus. This site moreover functions as a crucial reference point for early Christianity in the Southeast Alpine region and boasts a rich array of features","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"7 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139002646","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}
Alison B. Duncan, Cassandra Marinosci, Céline Devaux, Sophie Lefèvre, Sara Magalhães, Joanne Griffin, Adeline Valente, Ophélie Ronce, Isabelle Olivieri
In structured populations, competition for mates between closely related males, termed Local Mate Competition (LMC), is expected to select for female-biased offspring sex ratios. However, the cues underlying sex allocation decisions remain poorly studied. Here, we test for several cues in the spider mite Tetranychus urticae, a species that was previously found to adjust the sex ratio of its offspring in response to the number of females within the local population, i.e. a patch. We here investigate whether the offspring sex ratio of T. urticae females changes in response to 1) the current number of females in the same patch, 2) the number of females in the patches of their mothers and 3) their relatedness to their mate. Single females on patches produced similar sex ratios to those of groups of 15 females; their mothers had been in identical conditions of panmixia. The offspring sex ratios of females mated with their brother did not differ from those of females mated with an unrelated male. Females however produced a more female-biased offspring sex ratio if their mothers were alone on a patch compared to 15 other females. Thus, maternal environment is used as a cue for the sex allocation of daughters. We discuss the conditions under which the maternal environment may be a reliable predictor of LMC experienced by grand-sons.
{"title":"Transgenerational cues about local mate competition affect offspring sex ratios in the spider mite Tetranychus urticae","authors":"Alison B. Duncan, Cassandra Marinosci, Céline Devaux, Sophie Lefèvre, Sara Magalhães, Joanne Griffin, Adeline Valente, Ophélie Ronce, Isabelle Olivieri","doi":"10.24072/pcjournal.343","DOIUrl":"https://doi.org/10.24072/pcjournal.343","url":null,"abstract":"In structured populations, competition for mates between closely related males, termed Local Mate Competition (LMC), is expected to select for female-biased offspring sex ratios. However, the cues underlying sex allocation decisions remain poorly studied. Here, we test for several cues in the spider mite Tetranychus urticae, a species that was previously found to adjust the sex ratio of its offspring in response to the number of females within the local population, i.e. a patch. We here investigate whether the offspring sex ratio of T. urticae females changes in response to 1) the current number of females in the same patch, 2) the number of females in the patches of their mothers and 3) their relatedness to their mate. Single females on patches produced similar sex ratios to those of groups of 15 females; their mothers had been in identical conditions of panmixia. The offspring sex ratios of females mated with their brother did not differ from those of females mated with an unrelated male. Females however produced a more female-biased offspring sex ratio if their mothers were alone on a patch compared to 15 other females. Thus, maternal environment is used as a cue for the sex allocation of daughters. We discuss the conditions under which the maternal environment may be a reliable predictor of LMC experienced by grand-sons.","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"11 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136347412","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}
Vimbiso Chidoti, Hélène De Nys, Malika Abdi, Getrude Mashura, Valérie Pinarello, Ngoni Chiweshe, Gift Matope, Laure Guerrini, Davies Pfukenyi, Julien Cappelle, Ellen Mwandiringana, Dorothée Missé, Elizabeth Gori, Mathieu Bourgarel, Florian Liégeois
Astroviruses (AstVs) have been discovered in over 80 animal species including diverse bat species and avian species. A study on Astrovirus circulation and diversity in different insectivorous and frugivorous chiropteran species roosting in trees, caves and building basements was carried out at 11 different sites across Zimbabwe. Pooled and individual faecal sampling methods were used for this study, with collection dates ranging from June 2016 to July 2021. In two sites, Magweto and Chirundu, sampling was carried out at monthly intervals from August 2020 to July 2021. Astroviruses and bat mitochondrial genes were amplified using pan-AstVs and CytB /12S RNA PCR systems respectively. Phylogenetic analysis of the RdRp Astrovirus sequences revealed a high genetic diversity of astroviruses. All the bat astroviruses tested in this study clustered with the Mamastrovirus genus. Two distinct groups of amplified sequences were identified. One group was comprised of sequences isolated from Hipposideros, Rhinolophus and Eidolon helvum spp. clustered with Human Astrovirus strains: HuAstV types1-6, HuAstV-MLB1-3 and HuAstV-VA-1. The second group comprising the majority of the sequences clustered with different strains of Bat AstVs. Results from the longitudinal study at Magweto and Chirundu showed an overall AstV prevalence of 13.7% and 10.4% respectively. Peaks of AstV infection at Chirundu coincided with the period when juveniles are 4-6 months old. By combining data from our previous work on Coronaviruses, we also anaylzed co-infection of bats with Coronaviruses and Astroviruses at Magweto and Chirundu sites for which the prevalence of co-infection was 2.6% and 3.5% respectively.
星状病毒(AstVs)已在包括多种蝙蝠和鸟类在内的80多种动物中被发现。在津巴布韦11个不同地点对栖息在树木、洞穴和建筑物地下室的不同食虫和食果翼目动物的星状病毒传播和多样性进行了研究。本研究采用了混合和个体粪便采样方法，收集日期为2016年6月至2021年7月。在Magweto和Chirundu两个地点，从2020年8月至2021年7月每月进行一次抽样。采用pan- astv和CytB /12S RNA PCR系统分别扩增星状病毒和蝙蝠线粒体基因。对RdRp星状病毒序列的系统发育分析表明，星状病毒具有较高的遗传多样性。本研究中测试的所有蝙蝠星状病毒都属于星状病毒属。鉴定出两组不同的扩增序列。其中一组由从希波sideros、Rhinolophus和Eidolon helvum spp中分离的序列组成，与人类星状病毒株HuAstV type 1-6、HuAstV- mlb1 -3和HuAstV- va -1聚集。第二组包含大多数序列聚集在不同的蝙蝠astv株上。Magweto和Chirundu的纵向研究结果显示，asv的总体患病率分别为13.7%和10.4%。奇伦都的亚洲猪瘟病毒感染高峰恰好发生在雏鸡4-6个月大的时期。结合之前冠状病毒研究的数据，我们还分析了Magweto和Chirundu站点蝙蝠与冠状病毒和astrovirus的共同感染情况，其中共同感染的患病率分别为2.6%和3.5%。
{"title":"Longitudinal Survey of Astrovirus infection in different bat species in Zimbabwe: Evidence of high genetic Astrovirus diversity","authors":"Vimbiso Chidoti, Hélène De Nys, Malika Abdi, Getrude Mashura, Valérie Pinarello, Ngoni Chiweshe, Gift Matope, Laure Guerrini, Davies Pfukenyi, Julien Cappelle, Ellen Mwandiringana, Dorothée Missé, Elizabeth Gori, Mathieu Bourgarel, Florian Liégeois","doi":"10.24072/pcjournal.340","DOIUrl":"https://doi.org/10.24072/pcjournal.340","url":null,"abstract":"Astroviruses (AstVs) have been discovered in over 80 animal species including diverse bat species and avian species. A study on Astrovirus circulation and diversity in different insectivorous and frugivorous chiropteran species roosting in trees, caves and building basements was carried out at 11 different sites across Zimbabwe. Pooled and individual faecal sampling methods were used for this study, with collection dates ranging from June 2016 to July 2021. In two sites, Magweto and Chirundu, sampling was carried out at monthly intervals from August 2020 to July 2021. Astroviruses and bat mitochondrial genes were amplified using pan-AstVs and CytB /12S RNA PCR systems respectively. Phylogenetic analysis of the RdRp Astrovirus sequences revealed a high genetic diversity of astroviruses. All the bat astroviruses tested in this study clustered with the Mamastrovirus genus. Two distinct groups of amplified sequences were identified. One group was comprised of sequences isolated from Hipposideros, Rhinolophus and Eidolon helvum spp. clustered with Human Astrovirus strains: HuAstV types1-6, HuAstV-MLB1-3 and HuAstV-VA-1. The second group comprising the majority of the sequences clustered with different strains of Bat AstVs. Results from the longitudinal study at Magweto and Chirundu showed an overall AstV prevalence of 13.7% and 10.4% respectively. Peaks of AstV infection at Chirundu coincided with the period when juveniles are 4-6 months old. By combining data from our previous work on Coronaviruses, we also anaylzed co-infection of bats with Coronaviruses and Astroviruses at Magweto and Chirundu sites for which the prevalence of co-infection was 2.6% and 3.5% respectively.","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"21 16","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135390329","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}
Inferring the strength of species interactions from demographic data is a challenging task. The Integrated Population Modelling (IPM) approach, bringing together population counts, capture-recapture, and individual-level fecundity data into a unified model framework, has been extended from single species to the community level. This allows to specify IPMs for multiple species with interactions specified as links between vital rates and stage-specific densities. However, there is no evaluation of such models when interactions are actually absent---while any interaction inference method runs the risk of producing false positives. We investigate here whether multispecies IPMs could output interactions where there are in fact none, building on an existing predator-prey IPM. We show that interspecific density-dependence estimates are centered on zero when simulated to be zero, and therefore their estimation is unbiased. Their coverage probability, quantifying how many times credible intervals include zero, is also satisfactory. We further confirm that adding random temporal variation to multispecies density-dependent link functions does not alter these results. This study therefore reaffirms the potential of multispecies IPMs to infer correctly how biotic interactions influence demography, although future studies should investigate model misspecifications.
{"title":"Assessing species interactions using integrated predator-prey models","authors":"Matthieu Paquet, Frédéric Barraquand","doi":"10.24072/pcjournal.337","DOIUrl":"https://doi.org/10.24072/pcjournal.337","url":null,"abstract":"Inferring the strength of species interactions from demographic data is a challenging task. The Integrated Population Modelling (IPM) approach, bringing together population counts, capture-recapture, and individual-level fecundity data into a unified model framework, has been extended from single species to the community level. This allows to specify IPMs for multiple species with interactions specified as links between vital rates and stage-specific densities. However, there is no evaluation of such models when interactions are actually absent---while any interaction inference method runs the risk of producing false positives. We investigate here whether multispecies IPMs could output interactions where there are in fact none, building on an existing predator-prey IPM. We show that interspecific density-dependence estimates are centered on zero when simulated to be zero, and therefore their estimation is unbiased. Their coverage probability, quantifying how many times credible intervals include zero, is also satisfactory. We further confirm that adding random temporal variation to multispecies density-dependent link functions does not alter these results. This study therefore reaffirms the potential of multispecies IPMs to infer correctly how biotic interactions influence demography, although future studies should investigate model misspecifications.","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"79 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135341570","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}
François Criscuolo, Inès Fache, Bertrand Scaar, Sandrine Zahn, Josefa Bleu
Telomeres are non-coding DNA sequences located at the end of linear chromosomes, protecting genome integrity. In numerous taxa, telomeres shorten with age and telomere length (TL) is positively correlated with longevity. Moreover, TL is also affected by environmental stressors and/or resource-demanding situations particularly during early-life. Thus, TL has been used as a physiological marker of individual quality and also as an indicator of population trend in conservation physiology. In this study, we investigated the effects of hatching rank, year of birth (2014 to 2017), sex and nest environment on TL of 137 Little Owls nestlings (Athene noctua). Little Owls’ populations in Europe showed a marked declined in the end of the 20th century. Nowadays, in the studied Alsatian population, the population is increasing. In this study, our results indicated that telomeres are longer in females and, independently of sex, in nestlings with the highest body condition. There was also a negative effect of hatching rank but only for last-hatched nestlings in large clutches of 5 nestlings. We did not find any effect of the environmental covariates on nestlings’ TL. Finally, we found that nestlings’ TL were shorter the last year of the study, while nestlings’ body condition stayed unchanged over the same period. This result is intriguing given the local positive population dynamics and is further discussed in the context of physiological conservation. Future studies should investigate the link between reduced TL and survival prospects in this species.
{"title":"Telomere length varies with sex, hatching rank and year of birth in the Little Owl, Athene noctua","authors":"François Criscuolo, Inès Fache, Bertrand Scaar, Sandrine Zahn, Josefa Bleu","doi":"10.24072/pcjournal.341","DOIUrl":"https://doi.org/10.24072/pcjournal.341","url":null,"abstract":"Telomeres are non-coding DNA sequences located at the end of linear chromosomes, protecting genome integrity. In numerous taxa, telomeres shorten with age and telomere length (TL) is positively correlated with longevity. Moreover, TL is also affected by environmental stressors and/or resource-demanding situations particularly during early-life. Thus, TL has been used as a physiological marker of individual quality and also as an indicator of population trend in conservation physiology. In this study, we investigated the effects of hatching rank, year of birth (2014 to 2017), sex and nest environment on TL of 137 Little Owls nestlings (Athene noctua). Little Owls’ populations in Europe showed a marked declined in the end of the 20th century. Nowadays, in the studied Alsatian population, the population is increasing. In this study, our results indicated that telomeres are longer in females and, independently of sex, in nestlings with the highest body condition. There was also a negative effect of hatching rank but only for last-hatched nestlings in large clutches of 5 nestlings. We did not find any effect of the environmental covariates on nestlings’ TL. Finally, we found that nestlings’ TL were shorter the last year of the study, while nestlings’ body condition stayed unchanged over the same period. This result is intriguing given the local positive population dynamics and is further discussed in the context of physiological conservation. Future studies should investigate the link between reduced TL and survival prospects in this species.","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"17 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391306","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}
Cédric Hubas, Julie Gaubert-Boussarie, An-Sofie D’Hondt, Bruno Jesus, Dominique Lamy, Vona Meleder, Antoine Prins, Philippe Rosa, Willem Stock, Koen Sabbe
{"title":"Identification of microbial exopolymer producers in sandy and muddy intertidal sediments by compound-specific isotope analysis","authors":"Cédric Hubas, Julie Gaubert-Boussarie, An-Sofie D’Hondt, Bruno Jesus, Dominique Lamy, Vona Meleder, Antoine Prins, Philippe Rosa, Willem Stock, Koen Sabbe","doi":"10.24072/pcjournal.336","DOIUrl":"https://doi.org/10.24072/pcjournal.336","url":null,"abstract":"","PeriodicalId":74413,"journal":{"name":"Peer community journal","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135871977","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}
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