Biology Letters最新文献_第6页

Flipons and the origin of the genetic code. 翻转和遗传密码的起源。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0635

Alan Herbert

引用次数: 0

Hormetic response to pesticides in diapausing bees. 滞育蜜蜂对杀虫剂的致敏反应。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0612

Etya Amsalem, Nathan Derstine, Cameron Murray

{"title":"Hormetic response to pesticides in diapausing bees.","authors":"Etya Amsalem, Nathan Derstine, Cameron Murray","doi":"10.1098/rsbl.2024.0612","DOIUrl":"10.1098/rsbl.2024.0612","url":null,"abstract":"Pollinators face declines and diversity loss associated with multiple stressors, particularly pesticides. Most pollination services are provided by annual bees that undergo winter diapause, and many common pesticides are highly soluble in water and move through soil and plants where bees hibernate and feed, yet the effects of pesticides on pollinators' diapause survival and performance are poorly understood. Pesticides may have complex effects in bees, and some were shown to induce hormetic effects on various traits characterized by high-dose inhibition coupled with low-dose stimulation. Here, we examined the occurrence of hormesis in the responses of bees to imidacloprid. We found that while longevity and reproduction were reduced following exposure to imidacloprid, the survival length of new queens (gynes) was greater. Diapause is a critical period in the life cycle of most bees with profound effects on their health. Exposure to sublethal doses of pesticides may increase bees' resistance to stress/cold during diapause but may also trade off with reduced reproductive performance later in life. Identifying these trade-offs is crucial to understanding how stressors affect pollinator health and should be accounted for when assessing pesticide risk, designing studies and facilitating conservation and management tools for supporting annual bees during diapause.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240612"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11750372/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142999550","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

Genetic variation in age-dependent attractiveness in a fish with a mixed mating system. 混合交配系统中鱼类年龄依赖性吸引力的遗传变异。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0448

Jefferson O Guerra, Merrit C Newton, Cassandra S Nicotera, Katie E McGhee

{"title":"Genetic variation in age-dependent attractiveness in a fish with a mixed mating system.","authors":"Jefferson O Guerra, Merrit C Newton, Cassandra S Nicotera, Katie E McGhee","doi":"10.1098/rsbl.2024.0448","DOIUrl":"10.1098/rsbl.2024.0448","url":null,"abstract":"Reproductive senescence is common across taxa and females often show a predictable decline in fecundity after maturity. Attending to these age-dependent cues could help males make optimal mate choice decisions. Here, we examined reproductive senescence and male mate choice in the androdioecious mangrove rivulus (Kryptolebias marmoratus), where self-fertilizing hermaphrodites exist with rare males. Hermaphrodites showed a strong decline in fecundity as they aged and genetic lineages varied in their fecundity at both young and old ages. Surprisingly, when given a simultaneous choice between genetically identical old and young hermaphrodites, males did not simply prefer younger hermaphrodites. Instead, male preference for younger versus older partners depended on the genetic lineage of the partners, resulting in a strong genotype × age interaction. For some genetic lineages, hermaphrodites were more attractive to males when younger, but for other genetic lineages, hermaphrodites were more attractive when older. Our results suggest that the genetic identity of the partner is key to how males weigh age-dependent changes in fecundity and that males are able to assess genetic variation in attractiveness over a partner's reproductive lifespan. Exploring how gamete viability and outcrossing are affected by age across genetic lineages could help us further understand these male preferences.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240448"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11751635/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142999623","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

Gene expression comparisons between captive and wild shrew brains reveal captivity effects. 圈养和野生鼩鼱大脑的基因表达比较揭示了圈养的影响。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-08 DOI: 10.1098/rsbl.2024.0478

Maria Alejandra Bedoya Duque, William R Thomas, Dina K N Dechmann, John Nieland, Cecilia Baldoni, Dominik von Elverfeldt, Marion Muturi, Angelique P Corthals, Liliana M Dávalos

{"title":"Gene expression comparisons between captive and wild shrew brains reveal captivity effects.","authors":"Maria Alejandra Bedoya Duque, William R Thomas, Dina K N Dechmann, John Nieland, Cecilia Baldoni, Dominik von Elverfeldt, Marion Muturi, Angelique P Corthals, Liliana M Dávalos","doi":"10.1098/rsbl.2024.0478","DOIUrl":"https://doi.org/10.1098/rsbl.2024.0478","url":null,"abstract":"Compared with their free-ranging counterparts, wild animals in captivity experience different conditions with lasting physiological and behavioural effects. Although shifts in gene expression are expected to occur upstream of these phenotypes, we found no previous gene expression comparisons of captive versus free-ranging mammals. We assessed gene expression profiles of three brain regions (cortex, olfactory bulb and hippocampus) of wild shrews (Sorex araneus) compared with shrews kept in captivity for two months and undertook sample dropout to examine robustness given limited sample sizes. Consistent with captivity effects, we found hundreds of differentially expressed genes in all three brain regions, 104 overlapping across all three, that enriched pathways associated with neurodegenerative disease, oxidative phosphorylation and genes encoding ribosomal proteins. In the shrew, transcriptomic changes detected under captivity resemble responses in several human pathologies, including major depressive disorder and neurodegeneration. While interpretations of individual genes are tempered by small sample sizes, we propose captivity influences brain gene expression and function and can confound analyses of natural processes in wild individuals under captive conditions.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240478"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11706642/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142944157","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

Biologging in a free-ranging mammal reveals apparent energetic trade-offs among physiological and behavioural components of the acute-phase response. 在自由放养的哺乳动物中进行的生物学研究揭示了急性期反应的生理和行为成分之间明显的能量权衡。

IF 2.8 2区生物学

Biology Letters Pub Date : 2024-12-01 Epub Date: 2024-12-04 DOI: 10.1098/rsbl.2024.0437

Austin Z T Allison, Helen E Chmura, Cory T Williams

{"title":"Biologging in a free-ranging mammal reveals apparent energetic trade-offs among physiological and behavioural components of the acute-phase response.","authors":"Austin Z T Allison, Helen E Chmura, Cory T Williams","doi":"10.1098/rsbl.2024.0437","DOIUrl":"10.1098/rsbl.2024.0437","url":null,"abstract":"The acute-phase response (APR) is an adaptive emergency life-history stage, wherein vertebrates exhibit fever and anorexia to survive an infection. However, induced immune responses are energetically costly, and sick animals may reduce physical activity to compensate. Tests of this predicted energetic trade-off in free-ranging animals are rare due to difficulties in measuring individual physiology and behaviour under immune challenge in natural settings. However, recent advances in biologging technology now make such studies possible. We surgically implanted heart rate/temperature loggers in free-ranging adult male Arctic ground squirrels, fitted the squirrels with collar-mounted accelerometers and light/temperature loggers, and injected animals with lipopolysaccharide (LPS) to simulate an immune challenge. LPS-injected squirrels exhibited approximately 1°C overnight fevers accompanied by slightly elevated (10 bpm) heart rates; LPS-injected squirrels also spent 19% less of their time aboveground the following day and reduced overall movement by 40% compared with saline-injected controls. Thus, we found support for an energetic trade-off between functional immune responses (fever and anorexia) and lethargic sickness behaviour within the APR of a free-ranging mammal. Moreover, our results suggest animal-borne devices can play an important role in future studies of vertebrate immunity and disease dynamics.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240437"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614546/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765679","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

Men display faster in male-biased mating contexts. 男性在偏向男性的交配环境中表现得更快。

IF 2.8 2区生物学

Biology Letters Pub Date : 2024-12-01 Epub Date: 2024-12-18 DOI: 10.1098/rsbl.2024.0487

Charles Davidson, Declan Buckley, Joyce F Benenson

{"title":"Men display faster in male-biased mating contexts.","authors":"Charles Davidson, Declan Buckley, Joyce F Benenson","doi":"10.1098/rsbl.2024.0487","DOIUrl":"10.1098/rsbl.2024.0487","url":null,"abstract":"Across diverse species with sexual reproduction, typically the more male-biased the adult sex ratio (ASR), the greater the investments by the more populous males in the rarer females who hold greater bargaining power in a mating context. Relatively few studies have examined this effect in humans however, and almost none involve observations of actual male investment in a potential mating context. Here, we present one of the first studies to observe investments of men in a potential mating context under differing ASRs. Across 163 mixed-sex groups from three taverns on 7 days of observation, we measured both a group's ASR and each group's leading man's latency to position himself at the tavern's bar to order and pay for beverages. The higher the proportion of men in a group (ASR) and the fewer the absolute number of women in a group, the faster the leading man in the group travelled to reach the bar to order and pay for beverages. Results are consistent with the hypothesis that similar to males in many species, men tactically regulate their investments to adapt to the fluctuation in the ASR in order to maximize their probabilities of attracting a mate.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240487"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11651882/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845815","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 spatiotemporal distribution of Mesozoic dinosaur diversity. 中生代恐龙多样性的时空分布。

IF 2.8 2区生物学

Biology Letters Pub Date : 2024-12-01 Epub Date: 2024-12-11 DOI: 10.1098/rsbl.2024.0443

Philip D Mannion

{"title":"The spatiotemporal distribution of Mesozoic dinosaur diversity.","authors":"Philip D Mannion","doi":"10.1098/rsbl.2024.0443","DOIUrl":"10.1098/rsbl.2024.0443","url":null,"abstract":"Much of our view on Mesozoic dinosaur diversity is obscured by biases in the fossil record. In particular, spatiotemporal sampling heterogeneity affects identification of the timing and geographical location of radiations, the recognition of the latitudinal diversity gradient, as well as interpretation of purported extinctions, faunal turnovers and their drivers, including the Early Jurassic Jenkyns Event and across the Jurassic/Cretaceous boundary. The current distribution of sampling means it is impossible to robustly determine whether these 'events' were globally synchronous and geologically instantaneous or spatiotemporally staggered. Accounting for sampling heterogeneity is also paramount to reconciling notable differences in results based on sampling-standardized dinosaur species richness versus reconstructions of diversification rates, particularly with regards to the lead-up to the Cretaceous/Paleogene mass extinction. Incorporation of a greater proportion of stratigraphically well-resolved dinosaurs into analyses is also imperative and must include the substantial Mesozoic radiation of birds. Given the relative rarity of temporally successive, well-sampled spatial windows, it remains possible that dinosaur species richness and diversification rate showed little change after the clade's initial radiation until the Cretaceous/Paleogene boundary. However, better understanding of underlying sampling, combined with a holistic approach to reconstructing dinosaur diversity and diversification, is an important step in testing this hypothesis.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240443"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632528/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142806101","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

Collective movement increases initial accuracy and path efficiency in talitrid amphipod orientation. 集体运动增加初始精度和路径效率在塔利格片脚类定向。

IF 2.8 2区生物学

Biology Letters Pub Date : 2024-12-01 Epub Date: 2024-12-04 DOI: 10.1098/rsbl.2024.0497

Magdalena L Phillips, Jesse N Granger, Sönke Johnsen

{"title":"Collective movement increases initial accuracy and path efficiency in talitrid amphipod orientation.","authors":"Magdalena L Phillips, Jesse N Granger, Sönke Johnsen","doi":"10.1098/rsbl.2024.0497","DOIUrl":"10.1098/rsbl.2024.0497","url":null,"abstract":"Talitrid amphipods are an extensively studied system for navigation due to their robust ability to navigate back to the optimal burrowing zone after foraging and could be a model system in which to study the impacts of collective behaviour on short-distance navigation and orientation. We investigated whether talitrid amphipods (Megalorchestia pugettensis) differ in their orientation abilities when released individually versus in a group. When released individually, the amphipods took longer to start moving (p < 0.001), travelled longer paths (p = 0.003), moved faster (p = 0.016), had a different initial bearing (p = 0.003) and exhibited more spread in their initial bearing (p = 0.009) than when released in groups. There was no difference between individuals and groups in terms of their trial time nor in the direction or spread of their final orientation. This study introduces a tractable, invertebrate species in which to study the impacts of collective movement and reveals previously unexamined differences in orientation abilities for talitrid amphipods released independently versus in a group that have implications for experimental design in this system.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240497"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11615670/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765682","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

Passive plasticity and a sex difference in the predictability of mobility. 被动可塑性和移动性可预测性的性别差异。

IF 2.8 2区生物学

Biology Letters Pub Date : 2024-12-01 Epub Date: 2024-12-18 DOI: 10.1098/rsbl.2024.0584

Clint D Kelly

引用次数: 0

Partial consumption of medical face masks by a common beetle species. 一种常见甲虫对医用口罩的部分消耗。

IF 2.8 2区生物学

Biology Letters Pub Date : 2024-12-01 Epub Date: 2024-12-04 DOI: 10.1098/rsbl.2024.0380

Shim Gicole, Alexandra Dimitriou, Natasha Klasios, Michelle Tseng

{"title":"Partial consumption of medical face masks by a common beetle species.","authors":"Shim Gicole, Alexandra Dimitriou, Natasha Klasios, Michelle Tseng","doi":"10.1098/rsbl.2024.0380","DOIUrl":"10.1098/rsbl.2024.0380","url":null,"abstract":"The widespread distribution of microplastics (MPs) in the environment has motivated research on the ecological significance and fate of these pervasive particles. Recent studies have demonstrated that MPs may not always have negative effects, and in contrast, several species of Tenebrionidae beetles utilized plastic as a food source in controlled laboratory experiments. However, most studies of plastic-eating insects have not been ecologically realistic, and thus it is unclear whether results from these experiments apply more broadly. Here, we quantified the ability of mealworms (Coleoptera: Tenebrionidae) to consume MPs derived from polypropylene and polylactic acid face masks; these are two of the most commonly used conventional and plant-based plastics. To simulate foraging in nature, we mixed MPs with wheat bran to create an environment where beetles were exposed to multiple food types. Mealworms consumed approximately 50% of the MPs, egested a small fraction, and consumption did not affect survival. This study adds to our limited knowledge of the ability of insects to consume MPs. Understory or ground-dwelling insects may hold the key to sustainable plastic disposal strategies, but we caution that research in this field needs to proceed concomitantly with reductions in plastic manufacturing.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240380"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614548/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765597","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