Journal of Experimental Biology最新文献_第2页

Evolved differences in microglial cell biology between surface and cave populations of Astyanax mexicanus. 墨西哥Astyanax mexicanus地表种群与洞穴种群间小胶质细胞生物学的进化差异。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-09 DOI: 10.1242/jeb.252665

Emilio Mendez Scolari, Aakriti Rastogi, Othniel K Amanyi, Erik R Duboue, Alex C Keene, Harini Iyer

{"title":"Evolved differences in microglial cell biology between surface and cave populations of Astyanax mexicanus.","authors":"Emilio Mendez Scolari, Aakriti Rastogi, Othniel K Amanyi, Erik R Duboue, Alex C Keene, Harini Iyer","doi":"10.1242/jeb.252665","DOIUrl":"https://doi.org/10.1242/jeb.252665","url":null,"abstract":"Microglia govern multiple aspects of brain architecture and function by eliminating dying neurons and glia, stimulating neurogenesis, refining neural connections, and orchestrating immune responses. The Mexican tetra, Astyanax mexicanus, is a powerful model system for investigating the evolution of brain function, yet microglia have not been investigated in this system. A. mexicanus exists as surface- and cave-dwelling morphotypes with prominent behavioral and physiological differences. Notably, these evolved behavioral and physiological changes in the cave morphotype, including diminished immune responses and alterations in sleep, circadian rhythms, and sensory processing, are directly linked to known microglial functions in other systems, suggesting that evolved differences in microglia may shape brain circuitry adaptations in cavefish. Here we develop an experimental toolbox to examine microglial specification, dynamics, and function in A. mexicanus and perform comparative analysis of microglial cell biology between the surface and cave morphotypes. We find that the cave populations show increased numbers of microglia over developmental time relative to their surface counterparts. Microglia in A. mexicanus exhibit a rapid expansion in response to inflammatory cues, distinct from the inflammatory response observed in the related teleost zebrafish. Furthermore, microglia in cave populations exhibit lower lysosomal pH and expanded proteolytic compartments relative to surface morphotypes. Together, our observations reveal evolved differences in microglial cell biology between surface and cave populations of A. mexicanus and provide a framework to uncover novel neuroimmune mechanisms underlying the remarkable adaptations of the Mexican tetra.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149136554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regulated apoptosis is a conserved mechanism pausing female reproduction and contributes to establishing the sterile worker caste in the eusocial wasp, Polistes. 调控细胞凋亡是一种保守的机制，暂停了雌性生殖，有助于建立不育工蜂种姓在社会性黄蜂，Polistes。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-09 DOI: 10.1242/jeb.253019

Laura E Miller, Ella S McVerry, Sean O'Donnell, Kari F Lenhart

{"title":"Regulated apoptosis is a conserved mechanism pausing female reproduction and contributes to establishing the sterile worker caste in the eusocial wasp, Polistes.","authors":"Laura E Miller, Ella S McVerry, Sean O'Donnell, Kari F Lenhart","doi":"10.1242/jeb.253019","DOIUrl":"10.1242/jeb.253019","url":null,"abstract":"Female reproduction is an energetically expensive process, so species evolve to balance survival with reproductive output. Many female organisms can temporarily pause their reproduction, including egg development, in response to physiological stress. The cellular mechanisms initiating and maintaining a stress-induced pause in oogenesis have been most extensively studied in Drosophila melanogaster. While the molecular control of paused oogenesis in response to starvation have been well characterized in flies, it remains unknown if these mechanisms are shared by other species with regulated pauses in oogenesis. Eusocial insects are characterized by a reproductive division of labor, with colonies of reproductive queens and sterile female workers. The social paper wasp, Polistes, has a dynamic dominance-based hierarchy for queen status. Worker Polistes are kept sterile by a combination of social and nutritional stressors. Here, we establish Polistes as a model to explore adult female reproductive plasticity. Through immunohistochemistry we have directly compared the Drosophila and Polistes ovarian structure and identified critical regions of the ovary in wasps that undergo regulated cell elimination during reproductive pause in flies. By comparing tissue structure, cell organization and rates of cell death between Polistes queens and workers we identified apoptosis as a key regulator maintaining worker sterility. Critically, this mechanism appears to be partially conserved with that in Drosophila. Finally, we find that changes in the timing and location of cell death in Polistes workers implicate oocyte identity and oocyte growth as additional potential regulators of temporary disruption of oogenesis.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149136790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Starvation tolerance and physiological deterioration in the ephyrae of the moon jellyfish Aurelia coerulea: Dynamics of biomolecules and respiration. 月亮水母前肢的饥饿耐受性和生理退化：生物分子和呼吸动力学。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-09 DOI: 10.1242/jeb.252840

Hideki Ikeda

{"title":"Starvation tolerance and physiological deterioration in the ephyrae of the moon jellyfish Aurelia coerulea: Dynamics of biomolecules and respiration.","authors":"Hideki Ikeda","doi":"10.1242/jeb.252840","DOIUrl":"https://doi.org/10.1242/jeb.252840","url":null,"abstract":"This study examines the physiological mechanisms underlying starvation tolerance and the deterioration of homeostasis prior to death in the ephyrae of the moon jellyfish Aurelia coerulea von Lendenfeld, 1884. Ephyrae were starved at 12°C for up to 50 days while monitoring morphological, histochemical, biomolecular, and respiratory changes. Dry mass and contents of protein, collagen, lipids, and carbohydrates declined exponentially throughout starvation. In contrast, DNA content remained stable until approximately 30 days, then decreased abruptly. This pattern indicates that extensive cell loss, rather than gradual biomolecular depletion, is the critical determinant of irrecoverability. Starved ephyrae progressively depleted lipid droplets and protein vacuoles while exhibiting severe tissue atrophy. Individual-specific respiration rates decreased with starvation duration, but carbon-mass-specific rates remained relatively constant. Carbon budget analysis revealed that approximately half of daily mass loss occurs through non-respiratory processes, suggesting substantial organic matter excretion. These combined changes cause an increasing imbalance between energy demand and supply, eventually leading to cellular failure and homeostatic collapse. Remarkably, ephyrae survived considerably beyond the estimated point of no return (PNR50), likely because residual tissues maintained minimal autonomous metabolic function despite weak physiological integration. These findings provide cellular biological insights into starvation physiology in the ephyrae of A. coerulea, demonstrating that the transition from reversible to irreversible starvation is marked by catastrophic cell loss rather than simple resource exhaustion. These physiological constraints during the early planktonic stage have important implications for understanding jellyfish population dynamics in variable marine environments.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149136837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A high-precision force plate method for long-term mass monitoring of fruit flies under controlled temperature and humidity. 一种控制温湿度条件下果蝇长期大量监测的高精度力板法。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-09 DOI: 10.1242/jeb.252725

Nozomi Ono, Domenico Mariani, Hirofumi Toda, Hidetoshi Takahashi

{"title":"A high-precision force plate method for long-term mass monitoring of fruit flies under controlled temperature and humidity.","authors":"Nozomi Ono, Domenico Mariani, Hirofumi Toda, Hidetoshi Takahashi","doi":"10.1242/jeb.252725","DOIUrl":"https://doi.org/10.1242/jeb.252725","url":null,"abstract":"Long-term monitoring of body mass in small insects provides critical insights into physiological regulation, metabolism, and behaviour, yet remains technically challenging owing to their extremely low mass and sensitivity to environmental fluctuations. Conventional microbalances and load cells offer high sensitivity but may have limitations in long-term stability or compatibility with controlled environmental conditions. Here, we present an optical, high-precision, force plate-based method that enables continuous, long-term monitoring of body mass in individual fruit flies under controlled temperature and humidity conditions. The system achieves sub-milligram resolution while maintaining mechanical stability and compatibility with environmental chambers, allowing uninterrupted measurements over extended periods. We validate system performance through continuous long-term recordings of individual fruit flies, revealing gradual changes in body mass. This approach provides a versatile platform for precise, long-term mass measurement and integrated physiological-behavioural analysis in insects and other small animals.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149137244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Instability of chromatophore maintenance as a potential route to transgressive color diversification: evidence from a hybrid grouper. 色素体维持的不稳定性作为海侵颜色多样化的潜在途径：来自杂交石斑鱼的证据。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-09 DOI: 10.1242/jeb.252860

Jiajun Zhang, Xiaoying Cao, Lisheng Wu, Jiankai Wei, Hongjun Guo, Shaoxiong Ding

{"title":"Instability of chromatophore maintenance as a potential route to transgressive color diversification: evidence from a hybrid grouper.","authors":"Jiajun Zhang, Xiaoying Cao, Lisheng Wu, Jiankai Wei, Hongjun Guo, Shaoxiong Ding","doi":"10.1242/jeb.252860","DOIUrl":"https://doi.org/10.1242/jeb.252860","url":null,"abstract":"Groupers play an important role in coral reef ecosystems as top predators, but much remains unknown about their diverse colorations. Hulong hybrid grouper (Epinephelus fuscoguttatus ♀×E. lanceolatus ♂) typically exhibits a black-brown patterned appearance but occasionally aberrant morphs, including pure white, pure yellow, and variegated forms which exceed the phenotypic range of either parent. What is the physiological basis of these transgressive colorations? Does each aberrant phenotype reflect an independent underlying state? Here, we combined long-term phenotypic observation with cytological analyses, transcriptome profiling and metabolomic assays of skin tissues from Hulong hybrid grouper. Cytological analyses revealed severe alterations in chromatophore composition. Color transitions documented in a single individual, together with multi-omics analyses, suggested that phenotypically diverse individuals possess an intrinsically unified and labile pigmentation system. These findings provide new insights into how coloration diversity is generated in hybrid offspring, and present Hulong hybrid grouper as an emerging model system for studying the evolution of novel color traits in fishes.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149136627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Both biological significance of acoustic signals and functional specificity of brain regions shape auditory brain network in music frogs. 声信号的生物学意义和脑区功能特异性共同塑造了音乐蛙的听觉脑网络。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-08 DOI: 10.1242/jeb.253376

Yansu Liu, Yue Wu, Yanzhu Fan, Xizi Yue, Tao Qing, Yayuan Luo, Guangzhan Fang

{"title":"Both biological significance of acoustic signals and functional specificity of brain regions shape auditory brain network in music frogs.","authors":"Yansu Liu, Yue Wu, Yanzhu Fan, Xizi Yue, Tao Qing, Yayuan Luo, Guangzhan Fang","doi":"10.1242/jeb.253376","DOIUrl":"https://doi.org/10.1242/jeb.253376","url":null,"abstract":"The architecture and dynamics of brain networks represent the structural and functional organizational principles underlying all cognitive processes and behavioral outputs, including auditory perception. However, the functional brain network and its relationship to auditory perception in non-human vocalizing animals remain inadequately characterized. To investigate these aspects, we recorded multi-channel electrocorticogram (ECoG) from Emei music frogs (Nidirana daunchina) responding to distinct acoustic stimuli and constructed functional brain networks. In general, graph theoretical analysis revealed that non-congeneric heterospecific calls enhanced clustering coefficients, local efficiency, and global efficiency in the theta band. This indicates that non-congeneric heterospecific calls elicit more pronounced network reorganization compared to other stimuli, including conspecific calls. Across frequency bands, the diencephalon exhibited the highest node strength and betweenness centrality, the telencephalon showed moderate node strength and lowest betweenness, and the mesencephalon displayed the lowest node strength but intermediate betweenness. These patterns align with functional specialization. Furthermore, sex differences emerged in network topology, particularly within theta and beta bands, indicating sexually dimorphic auditory processing strategies. These results imply that music frog auditory perception relies not solely on stable hierarchical pathways but involves dynamic adjustments in network efficiency and functional connectivity based on the biological significance of auditory signals.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149136416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the potential wet self-cleaning and spectral transmittance of snakes' spectacle. 蛇形奇观潜在的湿式自洁及光谱透过率。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-08 DOI: 10.1242/jeb.252668

Weibin Wu, K M Samaun Reza, Dmitry Busko, Felix Buck, Richard Thelen, Guillaume Gomard, Hendrik Hölscher

{"title":"On the potential wet self-cleaning and spectral transmittance of snakes' spectacle.","authors":"Weibin Wu, K M Samaun Reza, Dmitry Busko, Felix Buck, Richard Thelen, Guillaume Gomard, Hendrik Hölscher","doi":"10.1242/jeb.252668","DOIUrl":"https://doi.org/10.1242/jeb.252668","url":null,"abstract":"The eyes of snakes are protected by transparent scales, commonly called \"spectacles\" or \"brille\". As is widely known, snakes have no eyelids or other extremities to clean their eyes. Therefore, we test the hypothesis that their spectacle scales feature surface structures for self-cleaning. Additionally, snakes' spectacle scales might be optimized through evolution to enhance light capturing by the retina. To address these two subjects, we characterize the spectacle scales of 18 snake species belonging to 5 families regarding their wettability, adhesion, spectral transmittance, and micro-ornamentation utilizing optical spectroscopy, contact angle measurements, scanning electron microscopy, and atomic force microscopy. Remarkably, the optical transmittance of spectacle scales is moderate, with values of 70% to 90% above 400 nm. In most cases, the transmittance of spectacle scales is not significantly better than transparent dorsal or ventral scales. Furthermore, the spectacle scales are only slightly hydrophobic, with contact angles between 90° and 105°. In general, the contact angles are even lower than on dorsal and ventral scales. These results can be explained by the fact that the surface geometries of spectacle' scales are flat down to the nanoscale, comprising only polygonal cracks and nanoscale pits. Therefore, we conclude that snakes' spectacle scales do not feature advantageous properties regarding wet self-cleaning and optical transmittance. Additionally, we explain the physical origin of a transmittance peak close to 254 nm observed for scales of various snake species by the fluorescence of keratin.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149136743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compact climbing configuration and dactyl grip underlie vertical climbing in crabs. 紧凑的攀爬结构和短柄抓地力是螃蟹垂直攀爬的基础。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-06 DOI: 10.1242/jeb.252736

Jennifer R A Taylor

{"title":"Compact climbing configuration and dactyl grip underlie vertical climbing in crabs.","authors":"Jennifer R A Taylor","doi":"10.1242/jeb.252736","DOIUrl":"https://doi.org/10.1242/jeb.252736","url":null,"abstract":"Vertical climbing imposes mechanical challenges that differ from horizontal locomotion, yet the adaptations that enable crabs to climb remain poorly understood despite repeated transitions to terrestrial and arboreal habitats. This study integrates morphology, mechanical properties, and locomotor kinematics to examine climbing in the highly arboreal mangrove tree crab Aratus pisonii and the rocky intertidal lined shore crab Pachygrapsus crassipes. The arboreal species was predicted to possess traits that reduce toppling and improve grip during vertical locomotion. Aratus pisonii had relatively longer and slenderer pereopods, a more flexible merus, shorter and sharper dactyls, and higher dactyl friction than P. crassipes. During climbing, both species reduced speed, lowered abdominal clearance and body angle, and increased duty factor, indicating a shared shift toward slower, more supported locomotion. Contrary to expectation, static and dynamic toppling moments did not differ between species. Instead, the species differed in how they achieved similar toppling outcomes: A. pisonii adopted a more compact climbing configuration, with lower body angle, shorter leg span, and limbs oriented closer to the substrate, whereas P. crassipes used a broader limb posture and greater dactyl rotation. These results show that crab climbing expresses general principles of vertical locomotion through a distinctive brachyuran body plan, integrating compact climbing configuration and dactyl grip to maintain attachment and limit toppling. By linking morphology, mechanics, and kinematics, this study establishes a biomechanical framework for crab climbing and identifies trait combinations likely to contribute to repeated arboreal evolution in brachyurans.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149110567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Visual cue properties determine innate orientation strategy in Monarch butterflies. 视觉线索特性决定了帝王蝶的先天定向策略。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-06 DOI: 10.1242/jeb.253068

Fredrik Øglænd Hanslin, Maria Gayler, Myriam Franzke, Basil El Jundi

{"title":"Visual cue properties determine innate orientation strategy in Monarch butterflies.","authors":"Fredrik Øglænd Hanslin, Maria Gayler, Myriam Franzke, Basil El Jundi","doi":"10.1242/jeb.253068","DOIUrl":"https://doi.org/10.1242/jeb.253068","url":null,"abstract":"Animals use a wide range of environmental signals, including celestial and terrestrial cues for navigation. While celestial cues, such as the sun, play a major role in maintaining a constant heading during long-distance migration and dispersal, terrestrial cues provide an animal with a short-range navigation system, ideal to pinpoint highly specific locations. In Monarch butterflies, the simulation of a terrestrial landmark, i.e. a vertical stripe, induces an attraction behavior (all animals head toward the stimulus) while a small green light spot, simulating the sun, elicits menotactic orientation (animals adopt individual-specific headings relative to the stimulus). However, the mechanisms underlying how the animal distinguishes between a stimulus as a terrestrial landmark versus a celestial cue remains unclear. To explore this, we tested non-migratory Monarch butterflies (Danaus plexippus) in a flight simulator. The inner surface of the simulator was equipped with an array of LEDs, allowing to present different visual stimuli to the butterflies during tethered flight. By systematically manipulating the stimulus' width, height, brightness, and elevation we found that the butterflies exhibited attraction behavior to high contrast areas, like stripe edges. Menotactic behavior was not achieved by solely decreasing the stimulus to a small light spot but also required for the stimulus to be presented at higher elevation to be interpreted as a sun stimulus. These findings suggest that multiple parameters, inherently set by the butterfly's navigation system, are critical to interpret a visual stimulus as a celestial cue or terrestrial landmark, producing dynamic switches between different orientation strategies during navigation.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149110703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integration of conflicting acoustic cues in sound localization in Cope's gray treefrog. 柯普灰树蛙声音定位中相互冲突的声音线索的整合。

IF 3 2区生物学

Journal of Experimental Biology Pub Date : 2026-10-06 DOI: 10.1242/jeb.253027

Jain Pushpalatha Krishnan, Michael S Reichert

{"title":"Integration of conflicting acoustic cues in sound localization in Cope's gray treefrog.","authors":"Jain Pushpalatha Krishnan, Michael S Reichert","doi":"10.1242/jeb.253027","DOIUrl":"https://doi.org/10.1242/jeb.253027","url":null,"abstract":"Sound localization is crucial for acoustically communicating organisms. However, many species must localize sounds in challenging conditions with high noise and signal degradation, which in some cases generate conflicting directional cues. Neural integration of repeated signal elements could improve the accuracy of sound localization, but little is known about how directional cues are integrated in natural animal acoustic communication. We studied how female Cope's gray treefrogs (Hyla chrysoscelis) integrate conflicting directional information in male acoustic advertisement calls. We performed two-speaker phonotaxis experiments in which two speakers broadcast overlapping synthetic advertisement calls in which we systematically manipulated the timing relationships of pulses within the calls such that some pulses were leading in time on one speaker and the remaining pulses were leading on the other speaker. We tested alternative hypotheses of the mechanisms of integration by examining the effects of the percentage of leading pulses and their temporal order (at the beginning or end of the call) on female response to a speaker and the latency to approach. Our results were consistent with integration across the entire call, and females moved towards whichever side broadcast the greater percentage of leading pulses, with no evidence for temporal order effects. We also found that females took longer to approach for stimuli with highly conflicting directional information. These findings give insights into the mechanisms of sound localization and information integration in challenging acoustic conditions.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149110613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0