Biology Letters最新文献_第9页

The combined effects of elevated predation risk and anthropogenic noise on dwarf mongoose vigilance behaviour. 捕食风险升高和人为噪音对矮猫鼬警觉行为的综合影响。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-02-01 Epub Date: 2025-02-12 DOI: 10.1098/rsbl.2024.0645

Lucy Westover, Amy Morris-Drake, Megan Layton, Julie M Kern, Josh J Arbon, Andrew N Radford

{"title":"The combined effects of elevated predation risk and anthropogenic noise on dwarf mongoose vigilance behaviour.","authors":"Lucy Westover, Amy Morris-Drake, Megan Layton, Julie M Kern, Josh J Arbon, Andrew N Radford","doi":"10.1098/rsbl.2024.0645","DOIUrl":"10.1098/rsbl.2024.0645","url":null,"abstract":"Anthropogenic noise is a pervasive pollutant in the world's ecosystems, with numerous studies demonstrating negative physiological, developmental and behavioural impacts across taxa. However, research has tended to focus on anthropogenic noise in isolation; many species often experience this pollutant in conjunction with other anthropogenic and natural stressors. Here, we used a field experiment to investigate the combined effects of a sequential elevation in perceived predation risk followed by exposure to road noise on the vigilance behaviour of dwarf mongooses (Helogale parvula). As expected, both alarm-call playback (simulating a greater predation risk) and road-noise playback independently led to more vigilance compared to close-call and ambient-sound (control) playbacks, respectively. The two stressors had an equivalent effect on total vigilance, lending support to the risk-disturbance hypothesis. The combination of the two stressors did not, however, generate a significantly different amount of vigilance compared to road-noise playback alone. Thus, our experiment provides further evidence that anthropogenic noise can influence the vigilance-foraging trade-off but no indication of an additive or synergistic effect when combined with the natural stressor of elevated predation risk. Further investigation of combined-stressor effects is critical if we are to understand the true impacts of anthropogenic disturbances on species and communities.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 2","pages":"20240645"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11813581/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397777","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

Whence the birds: 200 years of dinosaurs, avian antecedents. 鸟类的起源：200年的恐龙，鸟类的祖先。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0500

Daniel J Field, M Grace Burton, Juan Benito, Olivia Plateau, Guillermo Navalón

引用次数: 0

Immune response accelerated telomere shortening during early life stage of a passerine bird, the blue tit (Cyanistes caeruleus). 免疫反应加速了雀形目蓝山雀（蓝山雀）早期生命阶段的端粒缩短。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0618

Matteo Schiavinato, Shivani Ronanki, Ignacio Miro Estruch, Nico van den Brink

{"title":"Immune response accelerated telomere shortening during early life stage of a passerine bird, the blue tit (Cyanistes caeruleus).","authors":"Matteo Schiavinato, Shivani Ronanki, Ignacio Miro Estruch, Nico van den Brink","doi":"10.1098/rsbl.2024.0618","DOIUrl":"10.1098/rsbl.2024.0618","url":null,"abstract":"Dealing with infections is a daily challenge for wild animals. Empirical data show an increase in reactive oxygen species (ROS) production during immune response. This could have consequences on telomere length, the end parts of linear chromosomes, commonly used as proxy for good health and ageing. Telomere length dynamics may reflect the costs associated with physiological responses. In this study, immune system of blue tit (Cyanistes caeruleus) nestlings was experimentally challenged through a polyinosinic:polycytidylic acid (poly I:C) injection, a synthetic double-stranded RNA that mimics a virus, activating the pathway of immune response triggered via the toll-like receptors 3. This path is known to form ROS downstream. Immune response was quantified by white cell counts in blood, while brain lipoperoxidation has been evaluated as an indicator of oxidative damage. Finally, individuals' telomere length shortening between days 8 and 15 after hatching was measured in erythrocytes. Challenged nestlings showed increased leukocyte number when compared with control (treated with a saline solution), lower brain lipid peroxidation (likely as a result of a compensatory mechanism after oxidative stress burst) and accelerated telomere shortening. These findings support the 'ageing cost of infections pathway' hypothesis, which supposes a role for infections in quick biological ageing.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240618"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11750392/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142999553","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 sexy and formidable male body: men's height and weight are conditfion-dependent, sexually selected traits. 性感而强大的男性身体：男性的身高和体重是条件决定的，是性选择的特征。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0565

David Giofrè, David C Geary, Lewis G Halsey

引用次数: 0

Tracking individual seed fate confirms mainly antagonistic interactions between rodents and European beech. 追踪单个种子的命运证实了啮齿动物和欧洲山毛榉之间主要的拮抗相互作用。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0586

Frederik Sachser, Georg Gratzer, Mario B Pesendorfer, Heino Konrad, Iris Kempter, Ursula Nopp-Mayr

{"title":"Tracking individual seed fate confirms mainly antagonistic interactions between rodents and European beech.","authors":"Frederik Sachser, Georg Gratzer, Mario B Pesendorfer, Heino Konrad, Iris Kempter, Ursula Nopp-Mayr","doi":"10.1098/rsbl.2024.0586","DOIUrl":"10.1098/rsbl.2024.0586","url":null,"abstract":"Food-hoarding granivores act as both predators and dispersers of plant seeds, resulting in facultative species interactions along a mutualism-antagonism continuum. The position along this continuum is determined by the positive and negative interactions that vary with the ratio between seed availability and animal abundance, particularly for mast-seeding species with interannual variation and spatial synchrony of seed production. Empirical data on the entire fate of seeds up to germination and the influence of rodents on seed survival is rare, resulting in a lack of consensus on their position along the mutualism-antagonism continuum. Here, we quantified annual seed rain and rodent abundance in an old-growth European beech forest and tracked 639 beechnuts to the seedling stage with 84% of seeds successfully located. Over 4 study years that covered the range of seed-to-rodent ratios, not a single seed successfully germinated after dispersal, illustrating a predominantly antagonistic interaction between rodents and seeds of European beech. Therefore, our findings do not support the predator dispersal hypothesis and partially contradict the predator satiation hypothesis, as the highest number of germinants and intact seeds were found in situ after an intermediate seed crop, not a bumper crop. Our results underline the necessity to track seeds up to germination.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240586"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11750373/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142999633","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

Cold waves in the Amazon rainforest and their ecological impact. 亚马逊雨林的寒潮及其生态影响。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0591

Kim L Holzmann, Pedro Alonso-Alonso, Yenny Correa-Carmona, Andrea Pinos, Felipe Yon, Gunnar Brehm, Alexander Keller, Ingolf Steffan-Dewenter, Marcell K Peters

引用次数: 0

Growing up with chronic traffic noise exposure leads to transient but not long-term noise tolerance in a songbird. 长期暴露在交通噪声环境中会导致鸣禽产生短暂而非长期的噪声耐受性。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-08 DOI: 10.1098/rsbl.2024.0575

Quanxiao Liu, Hans Slabbekoorn, Katharina Riebel

{"title":"Growing up with chronic traffic noise exposure leads to transient but not long-term noise tolerance in a songbird.","authors":"Quanxiao Liu, Hans Slabbekoorn, Katharina Riebel","doi":"10.1098/rsbl.2024.0575","DOIUrl":"https://doi.org/10.1098/rsbl.2024.0575","url":null,"abstract":"Noise pollution is on the rise worldwide. An unresolved issue regarding the mitigation of noise pollution is whether and at which timescales animals may adapt to noise pollution. Here, we tested whether continuous highway noise exposure perinatally and during juvenile development increased noise tolerance in a songbird, the zebra finch (Taeniopygia castanotis). Breeding pairs were exposed to highway noise recordings from pre-egg-laying until their offspring reached subadulthood. Subsequently, offspring were tested for noise tolerance both as subadults and adults in a spatial preference test, where birds could choose to enter aviaries with different levels of highway noise. Unlike control birds that preferentially chose the quiet aviaries, noise-reared birds exhibited no spatial preferences for quiet in the first test. However, when the experimental birds were retested after two months without noise exposure, they now avoided the previously tolerated noise levels and preferred the quieter aviary. The increased noise tolerance observed directly after the release from the noise treatment was thus only transient. Growing up with chronic highway noise exposure did thus not increase subjects' noise tolerance, meaning that at least in this songbird species, adaptation to noise pollution is unlikely to arise on a developmental time scale.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240575"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11706649/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142944093","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

Transient cognitive impacts of oxygen deprivation caused by catch-and-release angling. 抓放钓鱼引起的缺氧对短暂性认知的影响。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0527

Henrik Flink, Adrian Berge, Francesca Leggieri, Niclas Kolm, Petter Tibblin

{"title":"Transient cognitive impacts of oxygen deprivation caused by catch-and-release angling.","authors":"Henrik Flink, Adrian Berge, Francesca Leggieri, Niclas Kolm, Petter Tibblin","doi":"10.1098/rsbl.2024.0527","DOIUrl":"10.1098/rsbl.2024.0527","url":null,"abstract":"Vertebrate brain function is particularly sensitive to the effects of hypoxia, with even brief periods of oxygen deprivation causing significant brain damage and impaired cognitive abilities. This study is the first to investigate the cognitive consequences of hypoxia in fish, specifically induced by exhaustive exercise and air exposure, conditions commonly encountered during catch-and-release (C&R) practices in recreational fishing. Angling exerts substantial pressure on inland fish populations, underscoring the need for sustainable practices like C&R. While C&R survival rates are generally high, understanding its sublethal impacts is crucial for evaluating the practice's ethical and ecological sustainability. We examined the effects of these stressors on the cognitive function of 238 rainbow trout, using the free movement pattern Y-maze method to assess working memory through navigational search patterns during free exploration sessions. Our results showed that air exposure led to short-term (3-4 h post-treatment), but transient impairments in working memory, with no long-term cognitive deficits observed at one week and one month post-treatment. These findings emphasize the high tolerance of fish to hypoxia and support the sustainability of C&R as a tool in fisheries management.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240527"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732411/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982555","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 telencephalon and cerebellum volumes can be accurately estimated from digital brain endocasts. 鸟类端脑和小脑的体积可以通过数字脑内模准确估计。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0596

Aubrey R Keirnan, Felipe Cunha, Sara Citron, Gavin Prideaux, Andrew N Iwaniuk, Vera Weisbecker

{"title":"Avian telencephalon and cerebellum volumes can be accurately estimated from digital brain endocasts.","authors":"Aubrey R Keirnan, Felipe Cunha, Sara Citron, Gavin Prideaux, Andrew N Iwaniuk, Vera Weisbecker","doi":"10.1098/rsbl.2024.0596","DOIUrl":"10.1098/rsbl.2024.0596","url":null,"abstract":"For studies of the evolution of vertebrate brain anatomy and potentially associated behaviours, reconstructions of digital brain endocasts from computed tomography scans have revolutionized our capacity to collect neuroanatomical data. However, measurements from digital endocasts must be validated as reflecting actual brain anatomy, which is difficult because the collection of soft tissue information through histology is laborious and time-consuming. In birds, the reliability of digital endocast measurements as volume proxies for the two largest brain regions-the telencephalon and cerebellum-remains to be validated despite their use as proxies, e.g. of cognitive performance or flight ability. We here use the largest dataset of histology and digital endocasts to date, including 136 species from 25 avian orders, to compare digital endocast surface area measurements with actual brain volumes of the telencephalon, cerebellum and whole-brain endocast. Using linear and phylogenetically informed regression analyses, we demonstrate that endocast surfaces are strongly correlated with their brain volume counterparts for both absolute and relative size. This provides empirical support for using endocast-derived cerebellar and telencephalic surface areas in existing and future studies of living and extinct birds, with potential to expand to the dinosaur-bird transition in the future.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240596"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11750377/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142999615","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

Female gorillas form highly stable dominance relationships. 雌性大猩猩形成高度稳定的统治关系。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0556

Nikolaos Smit, Martha M Robbins

{"title":"Female gorillas form highly stable dominance relationships.","authors":"Nikolaos Smit, Martha M Robbins","doi":"10.1098/rsbl.2024.0556","DOIUrl":"10.1098/rsbl.2024.0556","url":null,"abstract":"Animals commonly form dominance relationships that determine the priority of access to resources and influence fitness. Dominance relationships based on age, immigration order or nepotism (alliances with kin) conventions are usually more stable than those based on intrinsic characteristics such as physical strength. Unlike most mammals, female gorillas disperse from their groups, typically more than once in their lifetimes, disrupting their group tenures and/or any alliances. Thus, we predicted that they form unstable dominance relationships that are not based on conventions. Contrarily, using a 24-year dataset on five groups of both gorilla species, we found that females form strikingly stable dominance relationships, maintained over their whole co-residence in a group (mean dyadic co-residence = 4.8, max = 17.3 years). Specifically, we observed rank reversals in only two out of 92 female dyads, and all other rank improvements resulted from emigration or death of higher-ranking females (passive mobility). These results mirror observations in chimpanzees, suggesting that dominance dynamics might have deep roots in hominid evolution. Our study challenges a hypothesized link between hierarchy instability and dispersal, particularly among animals in which fitness consequences of rank improvement may not be great enough to counterbalance the potentially high costs of challenging higher-ranking individuals.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240556"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11751638/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142999619","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