Biology LettersPub Date : 2025-05-01Epub Date: 2025-05-28DOI: 10.1098/rsbl.2025.0044
Patricia L Jones, Eric M Diaz, Neena E Goldthwaite, Hannah T Scotch, Sejal V Prachand, Eva R Ahn
{"title":"Pollinator cognition in a plant network.","authors":"Patricia L Jones, Eric M Diaz, Neena E Goldthwaite, Hannah T Scotch, Sejal V Prachand, Eva R Ahn","doi":"10.1098/rsbl.2025.0044","DOIUrl":"10.1098/rsbl.2025.0044","url":null,"abstract":"<p><p>Cognitive abilities evolve within the context of ecological communities. Honeybees and bumblebees have become model systems for cognitive ecology, but pollination is performed by a diverse group of insects under similar pressures to forage efficiently in a mixed floral community. We studied the colour learning abilities of six species of Hymenoptera (two eusocial bumblebees, a cuckoo bumblebee, two wasps and a leaf-cutter bee) within the context of an island plant community. We used records of insect visits to flowers in the field to determine the index of specialization of each species in the island plant-pollinator network, and measured the spectral reflectance of the flowers they visit. Species with higher specialization indices in our plant-pollinator network made a larger proportion of correct choices in a colour learning task than more generalist species. The more generalist species also visited a group of flowers more similar to each other in hymenopteran colour vision space. These results indicate that better colour learning abilities may enable insects to forage on plants of different colours, whereas more generalist insects are visiting flowers that are similar in colour, and therefore are less reliant on repeated colour learning to forage efficiently.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 5","pages":"20250044"},"PeriodicalIF":2.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12115817/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144156833","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 : 2025-05-01Epub Date: 2025-05-28DOI: 10.1098/rsbl.2025.0070
Sabine Nöbel, Tim Eric Kaufmann
{"title":"Mate copying in <i>Drosophila simulans</i>.","authors":"Sabine Nöbel, Tim Eric Kaufmann","doi":"10.1098/rsbl.2025.0070","DOIUrl":"10.1098/rsbl.2025.0070","url":null,"abstract":"<p><p>To find a suitable mate, many animals across taxa use social information. Mate copying is a form of social learning in which individuals use information regarding potential mates by observing and copying the mate choices of other individuals. While mate copying in <i>Drosophila melanogaster</i> has been extensively documented in the laboratory and its potential for cultural evolution has been demonstrated, little is known about mate copying in other <i>Drosophila</i> species. Here, we report the first evidence that <i>Drosophila simulans</i> females also copy the mate choice of their conspecifics. We used the well-established protocol developed for <i>D. melanogaster</i>: a naive, unmated female first observes a conspecific's mate choice between one artificially coloured green and one artificially coloured pink male and is afterwards allowed to choose between two males of the same phenotypes herself. Just as with <i>D. melanogaster</i>, <i>D. simulans</i> females were more likely to choose the same type of male as in the demonstration. This finding underscores the capacity of <i>D. simulans</i> females to engage in rapid social observational learning, a process that may play a significant role in the evolution of reproductive isolation.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 5","pages":"20250070"},"PeriodicalIF":2.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12115842/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144156730","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 : 2025-04-01Epub Date: 2025-04-23DOI: 10.1098/rsbl.2024.0652
Chase D Brownstein, Daemin Kim, Julia E Wood, Zachariah D Alley, Maya F Stokes, Thomas J Near
{"title":"Undescribed and imperiled vertebrate biodiversity near an American urban center.","authors":"Chase D Brownstein, Daemin Kim, Julia E Wood, Zachariah D Alley, Maya F Stokes, Thomas J Near","doi":"10.1098/rsbl.2024.0652","DOIUrl":"https://doi.org/10.1098/rsbl.2024.0652","url":null,"abstract":"<p><p>Urban expansion threatens biodiversity hotspots and endemic species. In this study, we describe two imperiled new species of fishes belonging to the vermilion darter (<i>Etheostoma chermocki</i>) complex. These new species are restricted to individual stream systems surrounding the city of Birmingham, Alabama, USA, and are at risk of extinction due to anthropogenic development. Genomic species delimitation reveals that members of this species complex, which differ subtly but consistently in meristic counts and coloration, show high levels of genomic divergence and little gene flow among them. These brilliantly coloured species, whose diversification tied to the erosional dynamics of the Black Warrior River basin, exemplify the imperiled, yet undescribed, species diversity within an urban landscape in the southeastern North American biodiversity hotspot.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 4","pages":"20240652"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12014243/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953478","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}
{"title":"Phylogenetic history of the acquisition of molluscan hosts in acotylean flatworms.","authors":"Osamu Kagawa, Hajime Itoh, Nobuyoshi Nakajima, Hiroaki Fukumori","doi":"10.1098/rsbl.2024.0721","DOIUrl":"10.1098/rsbl.2024.0721","url":null,"abstract":"<p><p>How symbionts acquired hosts and diversified phylogenetically during their evolutionary history is a focus of attention in many symbiotic taxa. Marine polyclad flatworms are usually free-living, but some are symbiotic, using animals as hosts. However, the history of their acquisition of symbiotic systems is not well understood. Therefore, we focused on mollusc symbiotic flatworms in the suborder Acotylea and investigated the host specificity and phylogenetic history of the acquisition of symbiosis. Field surveys revealed that symbiotic flatworms utilized certain molluscs as hosts. In particular, <i>Stylochoplana pusilla</i> and <i>Stylochoplana parasitica</i> utilized different molluscan species as hosts sympatrically. The phylogenetic analysis and the ancestral state reconstruction indicate that the mollusc symbiotic flatworms formed a monophyletic group and that their common ancestor shifted from free-living to mollusc symbiosis. These results suggest that each of the flatworms did not independently acquire a symbiotic system with molluscan hosts during its phylogenetic history, but that their common ancestor acquired a mollusc symbiotic system, which then underwent acquisition of host specificity and speciation. This study emphasizes that multiple host use can be a driving force for niche advancement and speciation in the symbionts.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 4","pages":"20240721"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11978461/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143810424","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 : 2025-04-01Epub Date: 2025-04-16DOI: 10.1098/rsbl.2024.0648
Catherine E Lovelock, Carlos M Duarte
{"title":"Out of the blue carbon box: toward investable blue natural capital.","authors":"Catherine E Lovelock, Carlos M Duarte","doi":"10.1098/rsbl.2024.0648","DOIUrl":"https://doi.org/10.1098/rsbl.2024.0648","url":null,"abstract":"<p><p>In 2019, we found that the concept of blue carbon had begun to solidify in the preceding decade around activities that could achieve mitigation through conservation and restoration and on ecosystems with high levels of data. Five years later, the available data have increased, and so too have the ecosystems that are included in national carbon markets and carbon market methodologies (e.g. seaweed and supratidal forests). While the implementation of blue carbon strategies continues to advance in both the carbon and emerging biodiversity markets, the scale of investment is inadequate for the action needed to meet global targets of the Paris Agreement and Kunming-Global Biodiversity Framework. The developing finance mechanisms for investment in blue natural capital offer additional potential for action on conservation and restoration of blue carbon ecosystems at large scales, although governance systems are challenged to deliver just and equitable outcomes. Blue carbon research and implementation is characterized by deep collaboration among diverse disciplines and actors, which continues to be crucial to achieving conservation and restoration goals.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 4","pages":"20240648"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12000827/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143978098","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 : 2025-04-01Epub Date: 2025-04-16DOI: 10.1098/rsbl.2024.0484
Emily A Johnson, Flóra Talyigás, Alecia Carter
{"title":"Macaque mothers' responses to the deaths of their infants.","authors":"Emily A Johnson, Flóra Talyigás, Alecia Carter","doi":"10.1098/rsbl.2024.0484","DOIUrl":"https://doi.org/10.1098/rsbl.2024.0484","url":null,"abstract":"<p><p>Although it is understood that all humans grieve the death of close social partners, little empirical research has addressed animals' responses to death. In this study, we collected quantitative data on the behaviour of 11 bereaved rhesus macaque (<i>Macaca mulatta</i>) mothers at Cayo Santiago to the natural deaths of their infants and matched, non-bereaved controls. Our research focused on behavioural signs of grief, including loss of appetite, lethargy, increased stress and social withdrawal, highlighting that such responses are documented in the human literature, but could be found in mammalian taxa. Using mixed models, we found that, contrary to prediction, bereaved mothers spent less time resting than the non-bereaved control females in the first two weeks after their infants' deaths. There were no other behavioural markers of grief. We conclude that mothers showed a short-term behavioural response to their bereavement that does not match human's prolonged 'despair' grief. We propose that mothers' behavioural responses might be a form of 'protest' grief, as is seen in primate infants when separated from mothers and in humans, or do not grieve. We hope to advance the field of comparative thanatology by providing a framework and novel predictions for future studies in this area.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 4","pages":"20240484"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12000825/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143962956","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 : 2025-04-01Epub Date: 2025-04-23DOI: 10.1098/rsbl.2024.0689
Sarah D Mueller, Nathaniel T Wheelwright, Daniel J Mennill, Amy E M Newman, Stéphanie M Doucet, Joseph B Burant, Sarah L Dobney, Greg W Mitchell, Hayley A Spina, D Ryan Norris
{"title":"Population density and timing of breeding mediate effects of early life conditions on recruitment.","authors":"Sarah D Mueller, Nathaniel T Wheelwright, Daniel J Mennill, Amy E M Newman, Stéphanie M Doucet, Joseph B Burant, Sarah L Dobney, Greg W Mitchell, Hayley A Spina, D Ryan Norris","doi":"10.1098/rsbl.2024.0689","DOIUrl":"https://doi.org/10.1098/rsbl.2024.0689","url":null,"abstract":"<p><p>Identifying the factors driving juvenile recruitment is crucial for predicting the response of populations to environmental change. Importantly, how early life conditions carry over to influence recruitment may be highly dependent on the context in which they occur. For example, the effects of challenging early life conditions may be more pronounced under high densities or when young are born late in the season. We examined the ecological factors influencing local recruitment spanning three decades in Savannah sparrows (<i>Passerculus sandwichensis</i>) breeding on Kent Island, NB, Canada. The effect of nestling mass on recruitment depended on both population density and fledging date. At low-population densities or early in the breeding season, nestling mass had little effect on recruitment probability. At high-population densities or later in the breeding season, mass had a stronger effect, with heavier individuals more likely to recruit. Lighter fledglings may have lower recruitment under challenging conditions due to lower competitive ability, lower mobility and greater susceptibility to resource limitation relative to heavier fledglings. Our findings have important implications for life-history evolution and selection on body size in a changing world, highlighting the relationships between population density, timing of breeding and offspring recruitment.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 4","pages":"20240689"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12014229/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958997","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 : 2025-04-01Epub Date: 2025-04-16DOI: 10.1098/rsbl.2025.0068
Matthew L Holding, Alexandra Coconis, Patrice K Connors, Marjorie D Matocq, M Denise Dearing
{"title":"Ambient temperature and toxic diets constrain snake venom resistance in a desert rodent.","authors":"Matthew L Holding, Alexandra Coconis, Patrice K Connors, Marjorie D Matocq, M Denise Dearing","doi":"10.1098/rsbl.2025.0068","DOIUrl":"10.1098/rsbl.2025.0068","url":null,"abstract":"<p><p>Variation in ambient temperature and food availability is commonplace in nature and likely exerts several types of eco-evolutionary pressures that mediate species' interactions. In predator-prey interactions between snakes and rodents, the molecular interface is formed by snake venom and mammalian venom resistance proteins. However, the abiotic factors modulating resistance are poorly understood. Here, we measured serum-based venom resistance of desert woodrats (<i>Neotoma lepida</i>) maintained at either cool or warm ambient temperatures and fed creosote bush resin (native diet) or a control diet. Woodrat serum was collected and tested for its ability to inhibit the activity of rattlesnake venom metalloproteinases. Woodrats raised at cooler temperatures, as well as those consuming diets with creosote resin, were significantly less able to inhibit snake venom, suggesting that they would be more susceptible to snakebite. These results suggest that temperature and dietary variation across the distribution over which these rattlesnakes and woodrats interact could structure the outcomes of these predator-prey interactions. Additionally, these results may help explain why ambient temperatures, rather than dietary differences, predict the presence of neurotoxic versus proteolytic venom phenotypes in some rattlesnake species.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 4","pages":"20250068"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11999734/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143972971","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 : 2025-04-01Epub Date: 2025-04-02DOI: 10.1098/rsbl.2024.0617
Anna Goncerzewicz, Elzbieta Bonda-Ostaszewska, Marcin Lipiec, Ewelina Knapska, Marek Konarzewski
{"title":"Evolution of cellular architecture and function of the hippocampus: insights from the artificial selection experiment.","authors":"Anna Goncerzewicz, Elzbieta Bonda-Ostaszewska, Marcin Lipiec, Ewelina Knapska, Marek Konarzewski","doi":"10.1098/rsbl.2024.0617","DOIUrl":"10.1098/rsbl.2024.0617","url":null,"abstract":"<p><p>Inter-specifically, mammalian species with larger brains built of numerous neurons have higher cognitive abilities (CA) but at the expense of higher metabolic costs. It is unclear, however, how this pattern emerged since evolutionary mechanisms act intra-specifically, not inter-specifically. Here, we tested the existence of the above pattern at the species level in the hippocampus-the brain structure underlying CA. We used an artificial selection experiment consisting of lines of laboratory mice divergently selected for basal metabolic rate (BMR)-a trait implicated in brain size evolution, its metabolic costs and CA. Selection on BMR did not affect hippocampus size as a correlated response to this selection. However, the high BMR mice had superior CA and manifested increased neuronal density, higher cytochrome c oxidase density (indexing metabolic costs of neuronal activity) and dendritic spine density (indexing connectivity between neurons). Thus, our study calls into question the generality of patterns of the evolution of CA apparent interspecifically. At the species level, increased CA may arise through the rearrangement of the architecture and function of neurons without a conspicuous increase in their size but increase metabolism.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 4","pages":"20240617"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11961263/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762961","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 : 2025-04-01Epub Date: 2025-04-30DOI: 10.1098/rsbl.2025.0045
Susannah Maidment, Richard J Butler
{"title":"New frontiers in dinosaur exploration.","authors":"Susannah Maidment, Richard J Butler","doi":"10.1098/rsbl.2025.0045","DOIUrl":"https://doi.org/10.1098/rsbl.2025.0045","url":null,"abstract":"<p><p>Two hundred years after the naming of the first dinosaur, taxonomic studies remain an important component of dinosaur research. Around 50 new dinosaurs are named each year and are discovered from across the globe. The rate of new dinosaur discovery shows no signs of slowing, but not all geographical areas and temporal windows have been equally investigated. The potential for new dinosaur discoveries in India and Africa seems particularly high, while the Carnian, when dinosaurs probably originated, and the Middle Jurassic, when the major clades diversified, offer the best opportunities to make discoveries that will fundamentally change our understanding of dinosaur evolution. A major challenge to the discovery of new dinosaurs is funding. Frontier fieldwork is sometimes viewed as too risky to fund, while basic taxonomic work is considered to lack impact. As a consequence, we risk an 'extinction of experience', where researchers have limited training in the basic field- and specimen-based research that underpins our discipline. Going forward, new remote sensing techniques may help to find prospective areas, while three-dimensional scanning apps on smartphones will allow us to quickly record field data. Artificial intelligence is likely to be used increasingly for computed tomography segmentation and identification of problematic fossils.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 4","pages":"20250045"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12042219/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958043","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}