Biology LettersPub Date : 2024-12-01Epub Date: 2024-12-04DOI: 10.1098/rsbl.2024.0296
Samuel V Hulse, Emily L Bruns
{"title":"The emergence of nonlinear evolutionary trade-offs and the maintenance of genetic polymorphisms.","authors":"Samuel V Hulse, Emily L Bruns","doi":"10.1098/rsbl.2024.0296","DOIUrl":"10.1098/rsbl.2024.0296","url":null,"abstract":"<p><p>Evolutionary models of quantitative traits often assume trade-offs between beneficial and detrimental traits, requiring modellers to specify a function linking trait values. The choice of trade-off function can be consequential; functions that assume diminishing returns (accelerating costs) typically lead to single equilibrium genotypes, while decelerating costs often lead to genetic polymorphisms. Despite their importance, our current theory has little to say on which trade-off functions are the most biologically plausible. To address this gap, we explored how the genetic determination of quantitative traits can lead to different trade-off functions, using resistance to infectious diseases as an example trait. We developed a model where alleles at separate loci pleiotropically increase resistance while decreasing fecundity. We then used this model to generate genotype landscapes and investigate how epistasis effects the trade-off function. Regardless of the strength of epistasis, our model consistently led to accelerating costs. We then incorporated our genotype model into an eco-evolutionary model of disease resistance. Unlike other models with accelerating costs, our approach often led to genetic polymorphisms. Our results suggest that accelerating costs are a strong null model for evolutionary trade-offs and that the eco-evolutionary conditions required for polymorphism may be more nuanced than previously thought.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240296"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614545/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765630","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}
Biology LettersPub Date : 2024-12-01Epub Date: 2024-12-11DOI: 10.1098/rsbl.2024.0426
Colin Farrelly
{"title":"Climate geroscience: the case for 'wisdom-inquiry' science.","authors":"Colin Farrelly","doi":"10.1098/rsbl.2024.0426","DOIUrl":"10.1098/rsbl.2024.0426","url":null,"abstract":"<p><p>Why should, and how can, the fields of climate science and geroscience (which studies the biology of ageing) facilitate the cross-disciplinary collaboration needed to ensure that human and planetary health are both promoted in the future of an older, and warmer, world? Appealing to the ideal of 'wisdom-oriented' science (Maxwell 1984 In <i>From knowledge to wisdom: a revolution in the aims and methods of science</i>), where scientists consider themselves to be artisans working for the public good, a number of the real-world epistemic constraints on the scientific enterprise are identified. These include communicative frames that stoke intergenerational conflict (rather than solidarity) and treat the ends of planetary and human health as independent 'sacred values' (Tetlock 2003 <i>Trends Cogn. Sci.</i> <b>7</b>, 320-324) rather than as <i>interdependent</i> ends. To foster 'climate geroscience'-the field of knowledge and translational science at the intersection of climate science and geroscience-researchers in both fields are encouraged to think of novel ways they could make researchers from the other field 'conversationally' present when framing the aspirations of their respective fields, applying for grant funding and designing their conferences and managing their scientific journals.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240426"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11641429/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142806082","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}
Biology LettersPub Date : 2024-12-01Epub Date: 2024-12-18DOI: 10.1098/rsbl.2024.0472
Amy M Balanoff
{"title":"Dinosaur palaeoneurology: an evolving science.","authors":"Amy M Balanoff","doi":"10.1098/rsbl.2024.0472","DOIUrl":"10.1098/rsbl.2024.0472","url":null,"abstract":"<p><p>Our fascination with dinosaur brains and their capabilities essentially began with the first dinosaur discovery. The history of this study is a useful reflection of palaeoneurology as a whole and its relationship to a more inclusive evolutionary neuroscience. I argue that this relationship is imbued with high heuristic potential, but one whose realization requires overcoming certain constraints. These constraints include the need for a stable phylogenetic framework, methods for efficient and precise endocast construction, and fossil researchers who are steeped in a neuroscience perspective. The progress that has already been made in these areas sets the stage for a more mature palaeoneurology-not only one capable of being informed by neuroscience discoveries but one that drives such discoveries. I draw from work on the size, shape, behavioural correlates and developmental role of the dinosaur brain to outline current advances in dinosaur palaeoneurology. My examples largely are taken from theropods and centre on questions related to the origin of birds and their unique locomotory capabilities. The hope, however, is that these exemplify the potential for study in other dinosaur groups, and for utilizing the dinosaur-bird lineage as a parallel model on a par with mammals for studying encephalization.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240472"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11651910/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845809","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}
Biology LettersPub Date : 2024-12-01Epub Date: 2024-12-11DOI: 10.1098/rsbl.2024.0365
Nathan L Hobbs, Deborah M Hawkshaw, Jan J Wijmenga, Kimberley J Mathot
{"title":"Exploring sources of (co-)variation in timing and total daily feeder visits in a wild population of black-capped chickadees.","authors":"Nathan L Hobbs, Deborah M Hawkshaw, Jan J Wijmenga, Kimberley J Mathot","doi":"10.1098/rsbl.2024.0365","DOIUrl":"10.1098/rsbl.2024.0365","url":null,"abstract":"<p><p>The timing and amount of foraging in birds are shaped by many of the same extrinsic factors, including temperature and daylength, as well as intrinsic factors, such as sex and age. Here, we investigate co-variation between these traits. We observed a population of 143 individually marked black-capped chickadees (<i>Poecile atricapillus</i>) over a 90 day period during the winter. For each day, we recorded the time an individual began and ended feeder use relative to sunrise/sunset, and the total number of feeder visits. Within-individuals, both earlier first feeder visit and later last feeder visit were associated with higher total daily feeder visits but lower feeding rates. Individuals also differed consistently in the timing of first and last feeder visits, and individuals that consistently started feeder use earlier in the day ended feeder use later and had higher total daily feeder visits compared with those that started later, but had no difference in feeding rate. Our study demonstrates that variation in the timing of foraging can have important consequences for energy acquisition at both the within- and among-individual levels.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240365"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11631462/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142806084","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}
Biology LettersPub Date : 2024-12-01Epub Date: 2024-12-18DOI: 10.1098/rsbl.2024.0170
Ernesto Bonadies, Greg P A Lamarre, Daniel Souto-Vilarós, Nicholas A Pardikes, José Alejandro Ramírez Silva, Filonila Perez, Ricardo Bobadilla, Yacksecari Lopez, Yves Basset
{"title":"Population trends of insect pollinators in a species-rich tropical rainforest: stable trends but contrasting patterns across taxa.","authors":"Ernesto Bonadies, Greg P A Lamarre, Daniel Souto-Vilarós, Nicholas A Pardikes, José Alejandro Ramírez Silva, Filonila Perez, Ricardo Bobadilla, Yacksecari Lopez, Yves Basset","doi":"10.1098/rsbl.2024.0170","DOIUrl":"10.1098/rsbl.2024.0170","url":null,"abstract":"<p><p>Recent reports of insect decline have raised concerns regarding population responses of ecologically important groups, such as insect pollinators. Additionally, how population trends vary across pollinator taxonomic groups and degree of specialization is unclear. Here, we analyse 14 years of abundance data (2009-2022) for 38 species of native insect pollinators, including a range of Coleoptera, Lepidoptera and Hymenoptera specialists and generalists from the tropical rainforest of Barro Colorado Island, Panama. We estimated population trends across taxonomic groups to determine whether specialist species with a narrower range of interacting mutualistic partners are experiencing steeper population declines under environmental change. We also examined the relationship between climate variables and pollinator abundance over time to determine whether differences in sensitivity to climate predict differences in population trends among pollinator species. Our analyses indicated that most pollinator populations were stable or increasing, with few species showing evidence of decline, regardless of their degree of specialization. Differences in climate sensitivity varied among pollinator species but were not associated with population trends, suggesting other environmental factors at play for tropical insect pollinators. These results highlight the need for long-term population data from diverse tropical taxa to better assess the environmental determinants of insect pollinator trends.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240170"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653113/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845827","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}
Biology LettersPub Date : 2024-12-01Epub Date: 2024-12-04DOI: 10.1098/rsbl.2024.0424
María C Calderón-Capote, Mariëlle L van Toor, M Teague O'Mara, Travis D Bayer, Margaret C Crofoot, Dina K N Dechmann
{"title":"Consistent long-distance foraging flights across years and seasons at colony level in a neotropical bat.","authors":"María C Calderón-Capote, Mariëlle L van Toor, M Teague O'Mara, Travis D Bayer, Margaret C Crofoot, Dina K N Dechmann","doi":"10.1098/rsbl.2024.0424","DOIUrl":"10.1098/rsbl.2024.0424","url":null,"abstract":"<p><p>All foraging animals face a trade-off: how much time should they invest in exploitation of known resources versus exploration to discover new resources? For group-living central place foragers, this balance is challenging. Due to the nature of their movement patterns, exploration and exploitation are often mutually exclusive, while the availability of social information may discourage individuals from exploring. To examine these trade-offs, we GPS-tracked groups of greater spear-nosed bats (<i>Phyllostomus hastatus</i>) from three colonies on Isla Colón, Panamá. During the dry season, when these omnivores forage on the nectar of unpredictable balsa flowers, bats consistently travelled long distances to remote, colony-specific foraging areas, bypassing flowering trees closer to their roosts. They continued using these areas in the wet season, when feeding on a diverse, presumably ubiquitous diet, but also visited other, similarly distant foraging areas. Foraging areas were shared within but not always between colonies. Our longitudinal dataset suggests that bats from each colony invest in long-distance commutes to socially learned shared foraging areas, bypassing other available food patches. Rather than exploring nearby resources, these bats exploit colony-specific foraging locations that appear to be culturally transmitted. These results give insight into how social animals might diverge from optimal foraging.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240424"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11616444/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765688","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}
Biology LettersPub Date : 2024-12-01Epub Date: 2024-12-18DOI: 10.1098/rsbl.2024.0465
Veronica Z Radice, Alejandra Hernández-Agreda, Gonzalo Pérez-Rosales, Ryan Booker, Jessica Bellworthy, Manon Broadribb, Gaby E Carpenter, Clara Diaz, Ryan J Eckert, Nicola L Foster, Johanna C Gijsbers, Erika Gress, Jack H Laverick, Valerio Micaroni, Miriam Pierotti, Héloïse Rouzé, Angela Stevenson, Alexis B Sturm, Pim Bongaerts
{"title":"Recent trends and biases in mesophotic ecosystem research.","authors":"Veronica Z Radice, Alejandra Hernández-Agreda, Gonzalo Pérez-Rosales, Ryan Booker, Jessica Bellworthy, Manon Broadribb, Gaby E Carpenter, Clara Diaz, Ryan J Eckert, Nicola L Foster, Johanna C Gijsbers, Erika Gress, Jack H Laverick, Valerio Micaroni, Miriam Pierotti, Héloïse Rouzé, Angela Stevenson, Alexis B Sturm, Pim Bongaerts","doi":"10.1098/rsbl.2024.0465","DOIUrl":"10.1098/rsbl.2024.0465","url":null,"abstract":"<p><p>Mesophotic ecosystems (approx. 30-150 m) represent a significant proportion of the world's oceans yet have long remained understudied due to challenges in accessing these deeper depths. Owing to advances in underwater technologies and a growing scientific and management interest, there has been a major expansion in research of both (sub)tropical mesophotic coral ecosystems and temperate mesophotic ecosystems. Here, we characterize the recent global trends in mesophotic research through an updated release of the 'mesophotic.org' database (www.mesophotic.org) where we reviewed and catalogued 1500 scientific publications. In doing so, we shed light on four major research biases: a gross imbalance in (a) the geographical spread of research efforts, differences in (b) the focal depth range and (c) research fields associated with study organisms and research platforms, and (d) the lack of temporal studies. Overall, we are optimistic about the future of mesophotic research and hope that by highlighting current trends and imbalances, we can raise awareness and stimulate discussion on the future directions of this emerging field.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 12","pages":"20240465"},"PeriodicalIF":2.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11659679/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845829","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}
Biology LettersPub Date : 2024-11-01Epub Date: 2024-11-20DOI: 10.1098/rsbl.2024.0413
Guy Beauchamp
{"title":"Parrots live in smaller groups on islands.","authors":"Guy Beauchamp","doi":"10.1098/rsbl.2024.0413","DOIUrl":"10.1098/rsbl.2024.0413","url":null,"abstract":"<p><p>Species living on islands are predictably different from their mainland counterparts in morphology and behaviour, but the source of these differences is still debated. Islands, in particular, are characterized by depauperate predator communities. Relaxed predation pressure might explain why living in groups, a common anti-predator adaptation in animals, is considered less likely on islands. However, the empirical evidence for this effect is scant and alternative explanations have been overlooked. For instance, smaller groups might be more common because island species are less studied, because a more stable food supply associated with benign climate on islands favours territoriality, or because the population density is too low to allow the formation of larger groups. I examined the determinants of foraging group size in parrots, a large worldwide avian order with many island populations. Using a multivariable phylogenetic framework, I found that foraging group size was smaller on islands than on the continents controlling for ecological variables known to influence group size such as diet and body size. In addition, the island effect persisted after controlling for research effort, climate variables and population density, suggesting that impoverished predator communities are an important driver of group size on islands.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 11","pages":"20240413"},"PeriodicalIF":2.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11576116/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674483","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}
Biology LettersPub Date : 2024-11-01Epub Date: 2024-11-20DOI: 10.1098/rsbl.2024.0543
Roza G Kamiloğlu, Rui Sun, Patrick Bos, Florian Huber, Jisk Jakob Attema, Disa A Sauter
{"title":"Tickling induces a unique type of spontaneous laughter.","authors":"Roza G Kamiloğlu, Rui Sun, Patrick Bos, Florian Huber, Jisk Jakob Attema, Disa A Sauter","doi":"10.1098/rsbl.2024.0543","DOIUrl":"10.1098/rsbl.2024.0543","url":null,"abstract":"<p><p>Laughing is ubiquitous in human life, yet what causes it and how it sounds is highly variable. Considering this diversity, we sought to test whether there are fundamentally different kinds of laughter. Here, we sampled spontaneous laughs (<i>n</i> = 887) from a wide range of everyday situations (e.g. comedic performances and playful pranks). Machine learning analyses showed that laughs produced during tickling are acoustically distinct from laughs triggered by other kinds of events (verbal jokes, watching something funny or witnessing someone else's misfortune). In a listening experiment (<i>n</i> = 201), participants could accurately identify tickling-induced laughter, validating that such laughter is not only acoustically but also perceptually distinct. A second listening study (<i>n</i> = 210) combined with acoustic analyses indicates that tickling-induced laughter involves less vocal control than laughter produced in other contexts. Together, our results reveal a unique acoustic and perceptual profile of laughter induced by tickling, an evolutionarily ancient play behaviour, distinguishing it clearly from laughter caused by other triggers. This study showcases the power of machine learning in uncovering patterns within complex behavioural phenomena, providing a window into the evolutionary significance of ticking-induced laughter.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"20 11","pages":"20240543"},"PeriodicalIF":2.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11576105/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674488","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}