{"title":"Discovery of deep-sea acoels from a chemosynthesis-based ecosystem.","authors":"Natsumi Hookabe, Naoto Jimi, Yasuo Furushima, Yoshihiro Fujiwara","doi":"10.1098/rsbl.2023.0573","DOIUrl":"10.1098/rsbl.2023.0573","url":null,"abstract":"<p><p>Chemosynthesis-based ecosystems such as hydrothermal vents and hydrocarbon seeps harbour various endemic species, each uniquely adapted to the extreme conditions. While some species rely on obligatory relationships with bacterial symbionts for nutrient uptake, scavengers and predators also play important roles in food web dynamics in these ecosystems. Acoels, members of the phylum Xenacoelomorpha, are simple, worm-like invertebrates found in marine environments worldwide but are scarcely understood taxa. This study presents a novel genus and species of acoel from a deep-sea hydrocarbon seep off Hatsushima, Japan, <i>Hoftherma hatsushimaensis</i> gen. et sp. nov. Our multi-locus phylogenetic analysis revealed that the acoels are nested within Hofsteniidae, a family previously known exclusively from shallow waters. This finding suggests that at least two independent colonization events occurred in the chemosynthesis-based environments from the phylum Xenoacoelomorpha, represented by hofsteniid acoels and <i>Xenoturbella</i>. Previous reports of hofsteniid species from low-oxygen and sulfide-rich environments, including intertidal habitats with decomposing leaves, in addition to <i>H. hatsushimaensis</i> gen. et sp. nov. from a deep-sea hydrocarbon seep, imply a common ancestral adaptation to sulfide-rich ecosystems within Hofsteniidae. Moreover, the sister relationship between solenofilomorphid acoels predominating in sulfide-rich habitats indicates common ancestral adaptation to sulfide-rich ecosystems between these two families.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11288667/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141854672","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 : 2024-06-01Epub Date: 2024-06-12DOI: 10.1098/rsbl.2024.0120
Piotr Sorokowski, Michał Misiak, S Craig Roberts, Marta Kowal, Marina Butovskaya, Mohd Sofian Omar-Fauzee, Tomás Huanca, Agnieszka Sorokowska
{"title":"Is the perception of odour pleasantness shared across cultures and ecological conditions? Evidence from Amazonia, East Africa, New Guinea, Malaysia and Poland.","authors":"Piotr Sorokowski, Michał Misiak, S Craig Roberts, Marta Kowal, Marina Butovskaya, Mohd Sofian Omar-Fauzee, Tomás Huanca, Agnieszka Sorokowska","doi":"10.1098/rsbl.2024.0120","DOIUrl":"10.1098/rsbl.2024.0120","url":null,"abstract":"<p><p>What makes an odour pleasant or unpleasant? The inherent properties of the constituent chemical compounds, or the nose of the beholder, driven by idiosyncratic differences and culture-specific learning? Here, 582 individuals, including Tanzanian Hadza hunter-gatherers, Amazonian Tsimane' horticulturalists, Yali from the Papuan highlands and two industrialized populations (Poles, Malaysians), rated the pleasantness of 15 odour samples. We find considerable similarities in odour assessments across cultures, but our data do not fully support a claim regarding the universality of smell preferences. Despite cross-cultural similarities in olfactory assessments, probably driven by odour properties, we suggest that odour availability in ecological and cultural niches bears an undeniable effect on human odour preferences.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11285824/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141305366","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 : 2024-06-01Epub Date: 2024-06-19DOI: 10.1098/rsbl.2024.0102
T Kikuchi, Y Hayashi, Y Fujito, N Fujiwara-Tsujii, S Kawabata, K Sugawara, R Yamaoka, Kazuki Tsuji
{"title":"Test of the negative feedback hypothesis of colony size sensing in social insects.","authors":"T Kikuchi, Y Hayashi, Y Fujito, N Fujiwara-Tsujii, S Kawabata, K Sugawara, R Yamaoka, Kazuki Tsuji","doi":"10.1098/rsbl.2024.0102","DOIUrl":"10.1098/rsbl.2024.0102","url":null,"abstract":"<p><p>Social insects can sense colony size-even without visual information in a dark environment. How they achieve this is yet largely unknown. We empirically tested a hypothesis on the proximate mechanism using ant colonies. In <i>Diacamma</i> colonies, the monogynous queen is known to increase the effort devoted to queen pheromone transmission behaviour (patrolling) as the colony grows, as if she perceives colony size. The negative feedback hypothesis assumes that, through repeated physical contact with workers, the queen monitors the physiological state (fertility) of workers and increases her patrolling effort when she encounters more fertile workers. Supporting this hypothesis, we found that the queen increased her patrolling effort in response to a higher ratio of fertile workers under the experimental condition of constant colony size. Furthermore, chemical analyses and bioassays suggested that cuticular hydrocarbons have queen pheromone activity and can mediate the observed queen-worker communication of fertility state. Such a self-organizing mechanism of sensing colony size may also operate in other social insects living in small colonies.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11285623/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141417622","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":"Diatom cell-size composition as a novel tool for quantitative estimates of the water table in peatlands.","authors":"Shuangyu Xu, Bing Huang, Linghan Zeng, Zhao-Jun Bu, Xianyu Huang, Xu Chen","doi":"10.1098/rsbl.2024.0062","DOIUrl":"10.1098/rsbl.2024.0062","url":null,"abstract":"<p><p>Diatom cell-size composition is an indicator of aquatic environmental changes but has been rarely investigated, especially in semi-terrestrial peatlands. In this study, both taxonomic composition and cell-size composition of diatoms were analysed in 41 samples from two montane peatlands, northeastern China. Redundancy analyses revealed that diatom taxonomic composition was significantly related to the depth to the water table (DWT) and Ca<sup>2+</sup>, while cell-size composition was significantly associated with DWT and Si. DWT was the most important factor and its sole effect explained 26.2% and 17.9% of the total variance in taxonomic composition and cell-size composition, respectively. Accordingly, diatom-based water-table transfer functions were developed based on taxonomic composition and cell-size composition, respectively. The maximum-likelihood (ML) model based on diatom taxonomic composition had the best performance, with a correlation coefficient value (<i>R</i><sup>2</sup>) of 0.78 and the root mean squared error of prediction (RMSEP) of 6.66 cm. The ML model based on cell-size composition had similar performance, with an <i>R</i><sup>2</sup> of 0.78 and the RMSEP of 6.87 cm, suggesting that diatom cell-size composition can be a new quantitative means to track past water-table changes. This method requires further appraisal with palaeoecological data but offers a new option that deserves exploration.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11286141/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141455166","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 : 2024-06-01Epub Date: 2024-06-05DOI: 10.1098/rsbl.2024.0066
V Gjoni, G Marchessaux, D S Glazier, J S Wesner, M Bosch-Belmar, F P Mancuso, M F Tantillo, N Marsiglia, G Sarà
{"title":"Metabolic scaling of an invasive mussel depends on temperature and chemical cues from an invasive predator.","authors":"V Gjoni, G Marchessaux, D S Glazier, J S Wesner, M Bosch-Belmar, F P Mancuso, M F Tantillo, N Marsiglia, G Sarà","doi":"10.1098/rsbl.2024.0066","DOIUrl":"10.1098/rsbl.2024.0066","url":null,"abstract":"<p><p>Metabolism drives various biological processes, potentially influencing the ecological success and evolutionary fitness of species. Understanding diverse metabolic rates is fundamental in biology. Mechanisms underlying adaptation to factors like temperature and predation pressure remain unclear. Our study explored the role of temperature and predation pressure in shaping the metabolic scaling of an invasive mussel species (<i>Brachidontes pharaonis</i>). Specifically, we performed laboratory-based experiments to assess the effects of phenotypic plasticity on the metabolic scaling by exposing the mussels to water conditions with and without predator cues from another invasive species (the blue crab, <i>Callinectes sapidus</i>) across various temperature regimes. We found that temperature effects on metabolic scaling of the invasive mussels are mediated by the presence of chemical cues of an invasive predator, the blue crab. Investigating temperature-predator interactions underscores the importance of studying the ecological effects of global warming. Our research advances our understanding of how environmental factors jointly impact physiological processes.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11285836/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141247428","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 : 2024-06-01Epub Date: 2024-06-26DOI: 10.1098/rsbl.2023.0409
Jonathan Redshaw, Thomas Suddendorf
{"title":"Can chimpanzees conceive of mutually exclusive future possibilities? A Comment on: 'Chimpanzees prepare for alternative possible outcomes' (2023), by Engelmann <i>et al.</i>","authors":"Jonathan Redshaw, Thomas Suddendorf","doi":"10.1098/rsbl.2023.0409","DOIUrl":"10.1098/rsbl.2023.0409","url":null,"abstract":"","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11335059/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141455165","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 : 2024-06-01Epub Date: 2024-06-12DOI: 10.1098/rsbl.2023.0601
Cyrielle Duval, François Criscuolo, Fabrice Bertile
{"title":"Glycation resistance and life-history traits: lessons from non-conventional animal models.","authors":"Cyrielle Duval, François Criscuolo, Fabrice Bertile","doi":"10.1098/rsbl.2023.0601","DOIUrl":"10.1098/rsbl.2023.0601","url":null,"abstract":"<p><p>Glycation reactions play a key role in the senescence process and are involved in numerous age-related pathologies, such as diabetes complications or Alzheimer's disease. As a result, past studies on glycation have mostly focused on human and laboratory animal models for medical purposes. Very little is known about glycation and its link to senescence in wild animal species. Yet, despite feeding on high-sugar diets, several bat and bird species are long-lived and seem to escape the toxic effects of high glycaemia. The study of these models could open new avenues both for understanding the mechanisms that coevolved with glycation resistance and for treating the damaging effects of glycations in humans. Our understanding of glycaemia's correlation to proxies of animals' pace of life is emerging in few wild species; however, virtually nothing is known about their resistance to glycation, nor on the relationship between glycation, species' life-history traits and individual fitness. Our review summarizes the scarce current knowledge on the links between glycation and life-history traits in non-conventional animal models, highlighting the predominance of avian research. We also investigate some key molecular and physiological parameters involved in glycation regulation, which hold promise for future research on fitness and senescence of individuals.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11285833/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141305364","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 : 2024-06-01Epub Date: 2024-06-13DOI: 10.1098/rsbl.2024.0151
G S Ferreira, E R Nascimento, E A Cadena, M A Cozzuol, B M Farina, M L A F Pacheco, M A Rizzutto, M C Langer
{"title":"Correction: 'The latest freshwater giants: a new <i>Peltocephalus</i> (Pleurodira: Podocnemididae) turtle from the Late Pleistocene of the Brazilian Amazon' (2024), by Ferreira <i>et al.</i>","authors":"G S Ferreira, E R Nascimento, E A Cadena, M A Cozzuol, B M Farina, M L A F Pacheco, M A Rizzutto, M C Langer","doi":"10.1098/rsbl.2024.0151","DOIUrl":"10.1098/rsbl.2024.0151","url":null,"abstract":"","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11285748/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141309921","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 : 2024-06-01Epub Date: 2024-06-05DOI: 10.1098/rsbl.2024.0003
Adriana A Maldonado-Chaparro, Conner S Philson, Xinping Zhang, Daniel T Blumstein
{"title":"Social control is associated with increased reproductive skew in a wild mammal.","authors":"Adriana A Maldonado-Chaparro, Conner S Philson, Xinping Zhang, Daniel T Blumstein","doi":"10.1098/rsbl.2024.0003","DOIUrl":"10.1098/rsbl.2024.0003","url":null,"abstract":"<p><p>In group-living species, reproductive variation among individuals of the same sex is widespread. By identifying the mechanisms underlying this reproductive skew, we gain fundamental insights into the evolution and maintenance of sociality. A common mechanism, social control, is typically studied by quantifying dominance, which is one of many attributes of sociality that describes how individuals exert influence on others and is an incomprehensive measure of social control as it accounts only for direct relationships. Here, we use the global reaching centrality (GRC), which quantifies the degree of hierarchy in a social network by accounting for both direct and indirect social relationships. Using a wild, free-living population of adult female yellow-bellied marmots (<i>Marmota flaviventris</i>), we found a positive relationship between the reproductive skew index and GRC: more despotic social groups have higher reproductive skew. The GRC was stronger predictor for skew than traditional measures of social control (i.e. dominance). This allows deeper insights into the diverse ways individuals control other group members' reproduction, a core component in the evolution of sociality. Future studies of skew across taxa may profit by using more comprehensive, network-based measures of social control.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11285479/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141247435","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 : 2024-06-01Epub Date: 2024-07-03DOI: 10.1098/rsbl.2024.0106
Xiaoli Wang, Jingmai O'Connor, Xiaoting Zheng, Yan Wang, Yosef Kiat
{"title":"Earliest evidence of avian primary feather moult.","authors":"Xiaoli Wang, Jingmai O'Connor, Xiaoting Zheng, Yan Wang, Yosef Kiat","doi":"10.1098/rsbl.2024.0106","DOIUrl":"10.1098/rsbl.2024.0106","url":null,"abstract":"<p><p>Feather moulting is a crucial process in the avian life cycle, which evolved to maintain plumage functionality. However, moulting involves both energetic and functional costs. During moulting, plumage function temporarily decreases between the shedding of old feathers and the full growth of new ones. In flying taxa, a gradual and sequential replacement of flight feathers evolved to maintain aerodynamic capabilities during the moulting period. Little is known about the moult strategies of non-avian pennaraptoran dinosaurs and stem birds, before the emergence of crown lineage. Here, we report on two Early Cretaceous pygostylian birds from the Yixian Formation (125 mya), probably referable to Confuciusornithiformes, exhibiting morphological characteristics that suggest a gradual and sequential moult of wing flight feathers. Short primary feathers interpreted as immature are symmetrically present on both wings, as is typical among extant flying birds. Our survey of the enormous collection of the Tianyu Museum confirms previous findings that evidence of active moult in non-neornithine pennaraptorans is rare and likely indicates a moult cycle greater than one year. Documenting moult in Mesozoic feathered dinosaurs is critical for understanding their ecology, locomotor ability and the evolution of this important life-history process in birds.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11285806/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141490769","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}