Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology最新文献

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A millisecond parameter space for phase-shifting the circadian pacemaker with near-ultraviolet light. 用近紫外光移相昼夜节律起搏器的毫秒参数空间。
IF 2.2 4区 心理学
Sevag Kaladchibachi, David C Negelspach, Jamie M Zeitzer, Fabian-Xosé Fernandez
{"title":"A millisecond parameter space for phase-shifting the circadian pacemaker with near-ultraviolet light.","authors":"Sevag Kaladchibachi, David C Negelspach, Jamie M Zeitzer, Fabian-Xosé Fernandez","doi":"10.1007/s00359-025-01754-5","DOIUrl":"https://doi.org/10.1007/s00359-025-01754-5","url":null,"abstract":"<p><p>Light-mediated circadian entrainment is a fundamental sensory process across taxa, yet the contribution of ultraviolet-A (UVA; 315-400 nm) wavelengths remains poorly understood. Here, we characterize the phase-shifting effects of brief UVA light flashes in Drosophila ananassae, a species with known sensitivity to short-wavelength light via ocular and extraocular photoreceptors. Using a parametric array of 62 UVA LED protocols varying in flash duration (8, 16, 120 ms), frequency (0.13-1.0 Hz), and irradiance, we quantified circadian phase shifts in the locomotor activity rhythm under constant darkness following stimulation in either the delay (ZT13) or advance (ZT23) zones. Young flies (2-3 days old) exhibited robust phase delays and advances that scaled with flash luminance and frequency. Dose-response modeling revealed increased phase-shifting efficiency and lower energy thresholds with decreasing flash duration, especially at ZT23. By contrast, aged flies (40-45 days) showed significantly attenuated responses, particularly to 8 ms pulses, indicating an age-related decline in UVA sensitivity. These findings suggest that the insect circadian system is finely tuned to the temporal structure of UVA input, with optimal entrainment possibly occurring in response to brief, intermittent stimulation. The marked reduction in responsiveness with age highlights a potential erosion of fast-acting photoreceptive pathways. Given the conservation of UVA-sensitive photopigments across animals, these results offer comparative insights into how temporal light encoding influences circadian regulation across life stages and taxa.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144790773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cellular innovations and diversity in the lepidopteran compound eye. 鳞翅目复眼的细胞创新和多样性。
IF 2.2 4区 心理学
Wei Lu, Marcus R Kronforst
{"title":"Cellular innovations and diversity in the lepidopteran compound eye.","authors":"Wei Lu, Marcus R Kronforst","doi":"10.1007/s00359-025-01751-8","DOIUrl":"10.1007/s00359-025-01751-8","url":null,"abstract":"<p><p>Lepidoptera, having co-diversified with flowering plants and adapted to various diel niches, present a remarkable system for studying compound eye cell type diversity. Here we synthesize the latest research regarding Lepidopteran eye evolution across different timescales, from species-level variation to family-level changes, and mechanistic levels, from broad anatomical variation to molecular mechanisms responsible for spectral tuning. Opsin duplication, differential expression, and co-expression, combined with lateral filtering pigments, generate diverse spectral sensitivities in photoreceptors. Lateral filtering is particularly important for the convergent evolution of red vision. These diverse photoreceptors combine to form a handful of ommatidial types distributed differentially across eye regions, potentially specializing for distinct behavioral tasks. The coordinated development of these complex retinal mosaics requires precise regulatory mechanisms that we are only beginning to understand. Notably, only a subset of these ommatidial types contribute to color vision, highlighting the need for more research on their roles in motion and polarization vision. We also review support cells providing essential functions such as light insulation or reflection. Future research should focus on identifying ecological pressures driving visual system evolution, genetic bases of diverse retinal mosaics, and neural integration of visual information in Lepidoptera.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12467619/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144745998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An LC-MS/MS-based approach for monitoring monoaminergic status in lizard brains: method development and real-samples application. 一种基于LC-MS/ ms的监测蜥蜴大脑单胺状态的方法:方法开发和实际样品应用。
IF 1.9 4区 心理学
Dunja Šikić, Lu Turković, Olga Malev, Tomislav Gojak, Duje Lisičić, Miranda Sertić, Sofia Ana Blažević
{"title":"An LC-MS/MS-based approach for monitoring monoaminergic status in lizard brains: method development and real-samples application.","authors":"Dunja Šikić, Lu Turković, Olga Malev, Tomislav Gojak, Duje Lisičić, Miranda Sertić, Sofia Ana Blažević","doi":"10.1007/s00359-025-01753-6","DOIUrl":"https://doi.org/10.1007/s00359-025-01753-6","url":null,"abstract":"<p><p>Monoamines play essential roles in regulating brain functions, influencing behaviours and physiological processes. Despite significant advances in mammalian models, studies on reptiles are limited, restricting our understanding of their neurochemical and behavioural interactions. This study aimed to develop and validate a selective liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the simultaneous quantification of 11 monoamines and their metabolites (adrenaline, dopamine, levodopa, homovanillic acid, 5-hydroxyindoleacetic acid, 5-hydroxytryptophan, serotonin, norepinephrine, tryptophan, tyrosine, vanillylmandelic acid) in lizard brains, examining interspecies and sex-specific variations and their potential link to behavioural differences between Podarcis siculus and Podarcis melisellensis. Brain samples from 132 lizards were analysed using the optimized LC-MS/MS method, which included rigorous pre-analytical preparation to ensure analyte stability. The method demonstrated high sensitivity and specificity for monoamines, with the limit of quantitation lower than 5 ng mL<sup>-1</sup>. Statistical analyses were performed to assess species, sex, and interaction effects. Significant species differences were observed in tryptophan, 5-hydroxytryptophan and 5-hydroxyindoleacetic acid, with P. siculus males exhibiting the highest levels. No differences were found in the dopamine, noradrenaline or adrenaline pathways. Serotonergic differences align with previously recorded behavioural differences between these two species. This is the first comprehensive study profiling monoamines in lizard brains using LC-MS/MS, providing insights into species-specific neurochemical patterns. The findings underscore the utility of lizards as comparative models in neuroscience and highlight the need for further research into the interplay between neurochemistry and behaviour.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144700356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Artemin sensitises mouse (Mus musculus) and naked mole-rat (Heterocephalus glaber) sensory neurons in vitro. 青蒿素对小鼠和裸鼹鼠的感觉神经元有体外致敏作用。
IF 1.9 4区 心理学
Lanhui Qiu, Ewan St John Smith
{"title":"Artemin sensitises mouse (Mus musculus) and naked mole-rat (Heterocephalus glaber) sensory neurons in vitro.","authors":"Lanhui Qiu, Ewan St John Smith","doi":"10.1007/s00359-025-01752-7","DOIUrl":"https://doi.org/10.1007/s00359-025-01752-7","url":null,"abstract":"<p><p>The naked mole-rat (NMR, Heterocephalus glaber) is a subterranean rodent that exhibits a range of unusual physiological traits, including diminished inflammatory pain. For example, nerve growth factor (NGF), a key inflammatory mediator, fails to induce sensitization of sensory neurons and thermal hyperalgesia in NMRs. This lack of NGF-induced neuronal sensitization and thermal hyperalgesia results from hypofunctional signaling of the NGF receptor, tropomyosin receptor kinase A (TrkA). Like NGF-TrkA signaling, the neurotrophic factor artemin, a member of the glial cell line-derived neurotrophic factor (GDNF) family, is implicated in mediating inflammatory pain through its receptor, GDNF family receptor α3 (GFRα3), which is expressed by a subset of dorsal root ganglia (DRG) sensory neurons. Here we investigated GFRα3 expression in DRG neurons of mice and NMRs, as well as measuring the impact of artemin on DRG sensory neuron function in both species in vitro. Using immunohistochemistry, we observed a similar abundance of GFRα3 in mouse and NMR DRG sensory neurons, high coexpression with the transient receptor potential vanilloid 1 (TRPV1) ion channel suggesting that these neurons are nociceptive neurons. Using in vitro electrophysiology to record from cultured DRG sensory neurons, we observed that artemin induced depolarization of the resting membrane potential and decreased the rheobase in both species, as well as diminishing the degree of TRPV1 desensitization to multiple capsaicin stimuli. Overall, results indicate that artemin similarly sensitizes sensory neurons in both mice and NMRs, future in vivo studies being required to confirm if the conserved in vitro sensitization also occurs in vivo.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144700407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Masashi Kawasaki (1955-2025): neuroethologist who explored neural mechanisms of echolocation in bats and of electric behavior in fish. 川崎正志(1955-2025):研究蝙蝠回声定位和鱼电行为的神经机制的神经行为学家。
IF 1.9 4区 心理学
Günther K H Zupanc
{"title":"Masashi Kawasaki (1955-2025): neuroethologist who explored neural mechanisms of echolocation in bats and of electric behavior in fish.","authors":"Günther K H Zupanc","doi":"10.1007/s00359-025-01749-2","DOIUrl":"https://doi.org/10.1007/s00359-025-01749-2","url":null,"abstract":"<p><p>Masashi Kawasaki tragically died in a car accident on May 18, 2025. A dedicated neuroethologist and beloved faculty member at the University of Virginia, Charlottesville, he spent over four decades exploring neural mechanisms underlying echolocation in bats and electric behavior in weakly electric fish. He will be remembered for his expertise in carrying out challenging electrophysiological experiments in whole animals where others failed. His success was grounded on his mastery in combining a deep knowledge in neurophysiology with an excellent skill set for designing and building sophisticated experimental apparatus. Through his seminal research contributions and his generosity in sharing his knowledge with others, he left footprints in the minds and hearts of many.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144638737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phobic responses of bull ants (Myrmecia midas) to odours introduced on their foraging route. 牛蚁对其觅食路线上的气味的恐惧反应。
IF 1.9 4区 心理学
Venkata Manvitha Kambala, Yousef Ahmed, Jasmine Lee, Anwin Jose, Sahera Syed Nadir, B C Priyanka, Ali Gabir, Yingdie Sun, Ken Cheng, Sudhakar Deeti
{"title":"Phobic responses of bull ants (Myrmecia midas) to odours introduced on their foraging route.","authors":"Venkata Manvitha Kambala, Yousef Ahmed, Jasmine Lee, Anwin Jose, Sahera Syed Nadir, B C Priyanka, Ali Gabir, Yingdie Sun, Ken Cheng, Sudhakar Deeti","doi":"10.1007/s00359-025-01750-9","DOIUrl":"https://doi.org/10.1007/s00359-025-01750-9","url":null,"abstract":"<p><p>Goal-oriented learning and navigation is well known in eusocial insects. The solitary foraging of nocturnal bull ants Myrmecia midas in their visually complex environment relies on path integration and landmark learning. While this species seems to be 'sensitive' to handling and reacts to visual changes in their surroundings, not much is known about how added olfactory stimuli impact their route navigation on a vertical surface. In the current study, we added one of five different invisible odours on the trees on which foragers normally forage. We found that the bull ants showed phobic responses to all the odours. The Tea-tree and Lavender odours showed the strongest impact on the bull ants' navigation by causing detours, U-turns, and avoidance of the sensory stimuli, with the ants meandering more and scanning more frequently. The odours of Olive oil, Flax-seed oil, and Eucalyptus oil had a moderate impact on the ants' navigation. These findings showed the widespread influence of non-visual chemical cues in shaping bull ant navigation, reactions that we interpret as neophobic responses stemming from chemical alterations on learned routes. A second experiment supported the interpretation of neophobia as opposed to an inherent aversion to the odours. Repeated exposure to Lavender led to reduced aversive responding. Overall, this study contributes to the understanding of the effects of foreign odours, adding to our understanding of the complex learning processes of bull ants in their vertical navigation.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144621145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A distinguished palate: taste discrimination and decision making during the Garcia-effect in the pond snail Lymnaea stagnalis. 独特的味觉:塘蜗牛在加西亚效应中的味觉辨别和决策。
IF 2.2 4区 心理学
Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology Pub Date : 2025-07-01 Epub Date: 2025-06-19 DOI: 10.1007/s00359-025-01746-5
Grace Pelé, Ken Lukowiak
{"title":"A distinguished palate: taste discrimination and decision making during the Garcia-effect in the pond snail Lymnaea stagnalis.","authors":"Grace Pelé, Ken Lukowiak","doi":"10.1007/s00359-025-01746-5","DOIUrl":"10.1007/s00359-025-01746-5","url":null,"abstract":"<p><p>The Garcia-effect is a unique form of conditioned taste aversion for two main reasons: the first is that the taste must be a novel one; the second is the requirement of a sickness state that can occur hours after experiencing the novel taste. The Garcia-effect has been shown in the pond snail Lymnaea stagnalis. Here we use the requirement of novelty to determine the ability of the snails to differentiate between different food substances (carrot and beet) as well as a mixture of the two (called the Mélange). We hypothesized that L. stagnalis's tasting abilities as well as their memory are competent to discriminate between individual and mixed foods and remember different foods, without associating the mixture with its component ingredients. Thus, for example, a Garcia-effect for the Mélange taste, does not alter the hedonic value of either carrot or beet taste and vice-versa.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":"461-472"},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144327701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The olfactory bulbs of homing pigeons are not enlarged compared with other pigeon breeds. 信鸽的嗅球并不比其他品种的鸽子大。
IF 2.2 4区 心理学
Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology Pub Date : 2025-07-01 Epub Date: 2025-05-07 DOI: 10.1007/s00359-025-01742-9
Kelsey J Racicot, Audrey E M Guyonnet, Benjamin Brinkman, Julia Mehlhorn, Andrew N Iwaniuk
{"title":"The olfactory bulbs of homing pigeons are not enlarged compared with other pigeon breeds.","authors":"Kelsey J Racicot, Audrey E M Guyonnet, Benjamin Brinkman, Julia Mehlhorn, Andrew N Iwaniuk","doi":"10.1007/s00359-025-01742-9","DOIUrl":"10.1007/s00359-025-01742-9","url":null,"abstract":"<p><p>The homing pigeon (Columba livia) is one of the best examples of human selection for behaviour among domesticated animals. Several brain regions purportedly differ in size between homing and other pigeons as a result of this selection, one of which is the olfactory bulbs. Olfaction is considered by many to be one of the sensory cues homing pigeons use to orient home. The intense selection for homing could therefore have driven anatomical changes in the olfactory bulbs, the first site of olfactory processing in the brain, in homing pigeons. Here, we compared the size of the olfactory bulbs, as well as size and number of mitral cells, among homing pigeons, feral pigeons, and several sporting and show breeds. Homing pigeons did not differ in absolute of relative olfactory bulb size from wild, feral, or most other pigeon breeds. Only a small show breed (figurita frill) and a meat/show breed (king) differed in absolute and relative olfactory bulb sizes from other pigeon breeds. Similarly, there were no significant differences among breeds in the absolute or relative number of mitral cells or mitral cell soma size. The lack of significant differences among most of the pigeon breeds sampled suggests neither experience nor selection for different behavioural or physical traits affects olfactory bulb size or the number and size of mitral cells. Although the results might indicate that there is not anything special about the olfactory abilities of homing pigeons, we lack data on other aspects of olfactory bulb anatomy and the acuity and sensitivity of the olfactory system across pigeon breeds. The latter knowledge gap could be addressed through genomic and transcriptomic techniques, which would provide new insights to the ongoing debate surrounding the use of olfactory cues in homing.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":"425-434"},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143992838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Visual physiology of Australian stingless bees. 澳洲无刺蜂的视觉生理。
IF 2.2 4区 心理学
Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology Pub Date : 2025-07-01 Epub Date: 2025-05-20 DOI: 10.1007/s00359-025-01740-x
Bhavana Penmetcha, Laura A Ryan, Yuri Ogawa, Nathan S Hart, Ajay Narendra
{"title":"Visual physiology of Australian stingless bees.","authors":"Bhavana Penmetcha, Laura A Ryan, Yuri Ogawa, Nathan S Hart, Ajay Narendra","doi":"10.1007/s00359-025-01740-x","DOIUrl":"10.1007/s00359-025-01740-x","url":null,"abstract":"<p><p>Stingless bees engage in a range of visually guided behaviours that require relatively high spatial resolution and contrast sensitivity. Although the eyes of honeybees, bumblebees, carpenter bees, and sweat bees have been studied extensively, there is limited knowledge of stingless bees. Here, we studied two sympatric Australian species, Tetragonula carbonaria and Austroplebeia australis, which are important crop pollinators. The bigger A. australis had more and larger ommatidial facets compared to T. carbonaria. Using pattern electroretinography, we showed that A. australis had higher contrast sensitivity (13.07) compared to T. carbonaria (5.99), but their spatial resolving power did not differ (0.53 cycles deg<sup>-1</sup>). We discuss these differences in visual physiology in the context of the distinct foraging behaviours of the two species.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":"435-444"},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12321664/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dietary carotenoids enhance SWS1 expression in female western mosquitofish (Gambusia affinis) but do not impair their likelihood of pregnancy in the presence of male guppy. 饮食中的类胡萝卜素增强了雌性西蚊鱼(Gambusia affinis)中SWS1的表达,但在雄性孔雀鱼存在的情况下,不影响它们怀孕的可能性。
IF 2.2 4区 心理学
Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology Pub Date : 2025-07-01 Epub Date: 2025-04-29 DOI: 10.1007/s00359-025-01741-w
Yu-Chun Wang, I-Pei Kao, Chia-Hao Chang
{"title":"Dietary carotenoids enhance SWS1 expression in female western mosquitofish (Gambusia affinis) but do not impair their likelihood of pregnancy in the presence of male guppy.","authors":"Yu-Chun Wang, I-Pei Kao, Chia-Hao Chang","doi":"10.1007/s00359-025-01741-w","DOIUrl":"10.1007/s00359-025-01741-w","url":null,"abstract":"<p><p>The various cone opsin genes are responsible for distinct ecological tasks, with the altered expression profiles in teleost fishes representing an excellent paradigm for studying how fishes can quickly adapt to diverse habitats within their lifecycles. The molecular mechanisms underlying transcriptional switching among cone opsin genes are still being investigated, but factors such as light conditions, developmental stages, sex hormones, and diet are known to play a role in changing cone opsin expression profiles. Based on previous research on guppies, we hypothesized that a diet rich in carotenoids could enhance expression of the opsin gene LWS in western mosquitofish (Gambusia affinis) and potentially influence female mate choice. We raised female western mosquitofish under low-level or high-level carotenoid diets and then conducted female mating preference experiments, with or without the presence of male guppy (Poecilia reticulata). qPCR revealed that high carotenoid intake upregulates SWS1 rather than LWS transcription. This positive feedback loop may promote foraging efficiency and also protect the visual system from UV damage. The carotenoid diets had no effect on pregnancy likelihood, possibly because UV light is not a critical cue in western mosquitofish female mate choice and/or the light source we used did not encompass the UV spectrum. Presence of male guppies had no effect on pregnancy likelihood, though a previous study reported that it significantly reduced brood size. Therefore, interactions between male guppies and western mosquitofish likely reduces the number of copulations and/or disrupts parenting to reduce the number of offspring.</p>","PeriodicalId":54862,"journal":{"name":"Journal of Comparative Physiology A-Neuroethology Sensory Neural and Behavioral Physiology","volume":" ","pages":"411-423"},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144058371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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