Biology Letters最新文献_第6页

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

Hidden population turnover of small odontocetes in the northwestern North Pacific during the Holocene. 全新世北太平洋西北部小齿螈的隐蔽种群更替。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-08 DOI: 10.1098/rsbl.2024.0525

Takushi Kishida, Kyohei Sawada, Sakiko Namigata, Takamune Takabatake, Miwa Suzuki, Nanami Takezoe, Takumi Yamamoto, Toshimichi Nakanishi, Hiroyuki Kitagawa

{"title":"Hidden population turnover of small odontocetes in the northwestern North Pacific during the Holocene.","authors":"Takushi Kishida, Kyohei Sawada, Sakiko Namigata, Takamune Takabatake, Miwa Suzuki, Nanami Takezoe, Takumi Yamamoto, Toshimichi Nakanishi, Hiroyuki Kitagawa","doi":"10.1098/rsbl.2024.0525","DOIUrl":"https://doi.org/10.1098/rsbl.2024.0525","url":null,"abstract":"Despite numerous studies on the rise and fall of terrestrial megafauna in the late Quaternary, knowledge about marine megafauna from this period remains limited. In this study, we performed radiocarbon dating and partial mitochondrial DNA sequencing from the skeletal remains of three species of small odontocetes (Pacific white-sided dolphins, Dall's porpoises and harbour porpoises) excavated from prehistoric archaeological sites around the Japanese shore dating back to 8500-1000 years ago (ya). Pacific white-sided dolphins that habituated the eastern coast of Hokkaido around 2000 ya belonged to different maternal groups than those from over 5000 ya and today. Furthermore, the species composition excavated from eastern Hokkaido sites varies between 5000 and 2000 ya. These findings suggest two significant population turnovers of small odontocetes on the east coast of Hokkaido, a transitional zone between the coastal area of East Asia and the offshore North Pacific. Notably, the first turnover, occurring between 5000 and 2000 ya, represents the oldest evidence of local population turnovers of marine megafauna during the late Quaternary.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240525"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11706663/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142944096","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

Demystifying the functions of the mitochondrial ORFan proteins in bivalves with doubly uniparental inheritance. 揭示双双亲遗传双壳类动物线粒体ORFan蛋白的功能。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0564

Julie Brémaud, Alizée Debelli, Hajar Hosseini Khorami, Donald T Stewart, Annie Angers, Bernard Angers, Sophie Breton

{"title":"Demystifying the functions of the mitochondrial ORFan proteins in bivalves with doubly uniparental inheritance.","authors":"Julie Brémaud, Alizée Debelli, Hajar Hosseini Khorami, Donald T Stewart, Annie Angers, Bernard Angers, Sophie Breton","doi":"10.1098/rsbl.2024.0564","DOIUrl":"10.1098/rsbl.2024.0564","url":null,"abstract":"Strict maternal inheritance of mitochondria is known to be the rule in animals, but over 100 species across six orders of bivalves possess doubly uniparental inheritance (DUI) of mitochondria. Under DUI, two distinctive sex-specific mitogenomes coexist. In marine and freshwater mussels, each mitogenome has an additional protein-coding gene, called female- and male-specific open reading frame or forf and morf, respectively. The function(s) of the associated FORF and MORF proteins remain unknown. Herein, we show that these proteins present similar tissue expression patterns in two distantly related DUI species: MORF was only expressed in male gonads, whereas FORF was expressed in all tissues of both sexes in the marine mussel Mytilus edulis and the freshwater mussel Venustaconcha ellipsiformis. Moreover, MORF was only expressed during the reproductive season, while FORF presented no clear seasonality pattern in M. edulis. Immunocytochemistry revealed the presence of both proteins in mitochondria and acrosomes of late spermatids and mature sperm. We hypothesize that MORF has a key function in spermatogenesis, while FORF has a more general function in both sexes. We also propose that both proteins may be involved in the fertilization process. The involvement of MORF in paternal mitochondrial transmission is also discussed.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240564"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732398/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982428","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

Mean mares? Habitat features influence female aggression in response to social instability in the feral horse (Equus caballus). 母马意味着什么?生境特征影响了野马（Equus caballus）雌性对社会不稳定的反应。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0494

Cassandra M V Nuñez, James S Adelman

{"title":"Mean mares? Habitat features influence female aggression in response to social instability in the feral horse (Equus caballus).","authors":"Cassandra M V Nuñez, James S Adelman","doi":"10.1098/rsbl.2024.0494","DOIUrl":"10.1098/rsbl.2024.0494","url":null,"abstract":"It is unclear how habitat features alter animal responses to social instability. Only by uncovering such interactions can we fully understand the evolutionary drivers and fitness consequences of sociality. We capitalize on a management-induced manipulation of social stability in an island population of free-ranging feral horses (Equus caballus), living across three distinct habitat types. We tested whether female group-changing behaviour (a reliable measure of social instability) affected (i) female-female aggression, (ii) rank within female dominance hierarchies, (iii) stability of female hierarchies (in the groups they joined and/or left), and (iv) how habitat characteristics shaped these responses. Female group-changing behaviour positively predicted aggression from other females, but only when habitat features such as visibility and freshwater distribution were considered. We found no strong association among female group-changing behaviour and the aggression initiated, female rank or the stability of female dominance hierarchies. Our work reveals that animal responses to social instability are nuanced and impacted by the surrounding habitat. A better understanding of these impacts can help elucidate evolutionary drivers of sociality and mitigate unintended effects of management practices.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240494"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11733773/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982587","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

Fish reproductive phenology shifts with increasing temperature and year. 鱼类繁殖物候随温度和年份的增加而变化。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-08 DOI: 10.1098/rsbl.2024.0240

S T Koenigbauer, M L Cubbage, L D Warren, J M Tellier, O M Selz, G G Sass, T O Höök

{"title":"Fish reproductive phenology shifts with increasing temperature and year.","authors":"S T Koenigbauer, M L Cubbage, L D Warren, J M Tellier, O M Selz, G G Sass, T O Höök","doi":"10.1098/rsbl.2024.0240","DOIUrl":"10.1098/rsbl.2024.0240","url":null,"abstract":"Temperate fishes often spawn in response to environmental cues, such as temperature, thereby facilitating larval emergence concurrent with suitable biotic and abiotic conditions, such as plankton blooms. Climatic changes may alter the reproductive phenology of spring- and autumn-spawning freshwater fish populations. Such effects may depend on the sensitivity of reproductive phenology to ambient temperatures. We applied a meta-analysis approach to test whether annual temperature and year affected fish reproductive phenology. Based on preliminary tests in walleye (Sander vitreus) and Lake Constance whitefish (Coregonus arenicolus), we hypothesized that increasing temperature would promote earlier spring-spawning and later autumn-spawning. We found spawning was significantly earlier in the spring and later in the autumn. We found that migration of autumn-spawning species occurred earlier with warmer temperatures, implying that with increasing temperatures, migrating autumn-spawning species will increase residence time in tributaries. We also found that spring-spawning fishes reproduced earlier in more recent years, while we observed no significant effect in autumn-spawners. Spring- and autumn-spawning fishes displayed interannual variation in spawning dates (mean range of 34.4 and 27.0 days over 33.9 years, respectively), with spring-spawning fishes displaying a significantly broader range in spawning dates.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240240"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11706652/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142944155","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

DNA and spores from coprolites reveal that colourful truffle-like fungi endemic to New Zealand were consumed by extinct moa (Dinornithiformes). 粪化石的DNA和孢子显示，新西兰特有的色彩鲜艳的松露状真菌是由已灭绝的恐鸟（鸟硫目）食用的。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0440

Alexander P Boast, Jamie R Wood, Jerry Cooper, Nic Bolstridge, George L W Perry, Janet M Wilmshurst

{"title":"DNA and spores from coprolites reveal that colourful truffle-like fungi endemic to New Zealand were consumed by extinct moa (Dinornithiformes).","authors":"Alexander P Boast, Jamie R Wood, Jerry Cooper, Nic Bolstridge, George L W Perry, Janet M Wilmshurst","doi":"10.1098/rsbl.2024.0440","DOIUrl":"10.1098/rsbl.2024.0440","url":null,"abstract":"Mycovores (animals that consume fungi) are important for fungal spore dispersal, including ectomycorrhizal (ECM) fungi symbiotic with forest-forming trees. As such, fungi and their symbionts may be impacted by mycovore extinction. New Zealand (NZ) has a diversity of unusual, colourful, endemic sequestrate (truffle-like) fungi, most of which are ECM. As NZ lacks native land mammals (except bats), and sequestrate fungi are typically drab and mammal-dispersed, NZ's sequestrate fungi are hypothesized to be adapted for bird dispersal. However, there is little direct evidence for this hypothesis, as 41% of NZ's native land bird species became extinct since initial human settlement in the thirteenth century. Here, we report ancient DNA and spores from the inside of two coprolites of NZ's extinct, endemic upland moa (Megalapteryx didinus) that reveal consumption and likely dispersal of ECM fungi, including at least one colourful sequestrate species. Contemporary data from NZ show that birds rarely consume fungi and that the introduced mammals preferentially consume exotic fungi. NZ's endemic sequestrate fungi could therefore be dispersal limited compared with fungi that co-evolved with mammalian dispersers. NZ's fungal communities may thus be undergoing a gradual species turnover following avian mycovore extinction and the establishment of mammalian mycovores, potentially affecting forest resilience and facilitating invasion by exotic tree taxa.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240440"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732427/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982434","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

Dorsoventral comparison of intraspecific variation in the butterfly wing pattern using a convolutional neural network. 用卷积神经网络比较蝴蝶翅膀图案的种内变异。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0446

Kai Amino, Tsubasa Hirakawa, Masaya Yago, Takashi Matsuo

{"title":"Dorsoventral comparison of intraspecific variation in the butterfly wing pattern using a convolutional neural network.","authors":"Kai Amino, Tsubasa Hirakawa, Masaya Yago, Takashi Matsuo","doi":"10.1098/rsbl.2024.0446","DOIUrl":"10.1098/rsbl.2024.0446","url":null,"abstract":"Butterfly wing patterns exhibit notable differences between the dorsal and ventral surfaces, and morphological analyses of them have provided insights into the ecological and behavioural characteristics of wing patterns. Conventional methods for dorsoventral comparisons are constrained by the need for homologous patches or shared features between two surfaces, limiting their applicability across species. We used a convolutional neural network (CNN)-based analysis, which can compare images of the two surfaces without focusing on homologous patches or features, to detect dorsoventral bias in two types of intraspecific variation: sexual dimorphism and mimetic polymorphism. Using specimen images of 29 species, we first showed that the level of sexual dimorphism calculated by CNN-based analysis corresponded well with traditional assessments of sexual dissimilarity, demonstrating the validity of the method. Dorsal biases were widely detected in sexual dimorphism, suggesting that the conventional hypothesis of dorsally biased sexual selection can be supported in a broader range of species. In contrast, mimetic polymorphism showed no such bias, indicating the importance of both surfaces in mimicry. Our study demonstrates the potential versatility of CNN in comparing wing patterns between the two surfaces, while elucidating the relationship between dorsoventrally different selections and dorsoventral biases in intraspecific variations.","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240446"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732418/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982581","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

Hovering hawkmoths exploit unsteady circulation to produce aerodynamic force. 悬停的飞蛾利用非定常循环产生气动力。

IF 2.8 2区生物学

Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0619

Yun Liu, Biao Li, Deli Zhou

引用次数: 0