Journal of Experimental Biology最新文献_第2页

The influence of habitat complexity on otolith morphology and sensory capacities in Nile tilapia: A controlled experimental approach.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-31 DOI: 10.1242/jeb.249693

Arthur Van Damme, Huet Emmanuelle, Frédérich Bruno, Parmentier Eric

{"title":"The influence of habitat complexity on otolith morphology and sensory capacities in Nile tilapia: A controlled experimental approach.","authors":"Arthur Van Damme, Huet Emmanuelle, Frédérich Bruno, Parmentier Eric","doi":"10.1242/jeb.249693","DOIUrl":"https://doi.org/10.1242/jeb.249693","url":null,"abstract":"The inner ear of teleost fishes is known to serve both auditory and vestibular functions. Many studies have compared otoliths from different species and attempted to understand the observed differences within the light of environmental factors. However, experimental data on how otoliths could adapt are scarce. This study explores the relationship between environmental structural complexity and otolith morphology, and its effects on auditory and vestibular functions in Nile tilapia (Oreochromis niloticus). Using a controlled design, fishes of the same brood were distributed between a control tank and a tank equipped with suspended chains, only increasing the structural complexity. After a period of five months, we monitored auditory sensitivity and compared otolith morphology of both groups. Auditory capacities were measured using Auditory Evoked Potential (AEP) technique whereas otolith morphology was assessed through classical and geometric morphometrics. Tilapias raised in complex environments developed sagittae with increased length, thickness, area and volume. However, auditory sensitivity was consistent across both groups, suggesting that the morphological changes solely affected vestibular function. These findings support otolith morphology can adapt to fish surrounding environment, here to improve balance and manoeuvrability in complex settings. This reaffirms otolith sagittae not only support hearing but fulfil multiple roles to cope with environmental challenges. This also constitutes an indirect first demonstration of the sagitta's involvement in the vestibular function. Together with significant morphological changes, the similar auditory capabilities across groups underscore the complexity of defining functional roles within the inner ear and reaffirm the mixed function hypothesis, challenging the association between the observed variation and inner ear specific functions.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065680","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

Dynamic reciprocal morphological changes in insect hosts and bacterial symbionts.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-31 DOI: 10.1242/jeb.249474

Anthony D Junker, Jason Z Chen, James G DuBose, Nicole M Gerardo

{"title":"Dynamic reciprocal morphological changes in insect hosts and bacterial symbionts.","authors":"Anthony D Junker, Jason Z Chen, James G DuBose, Nicole M Gerardo","doi":"10.1242/jeb.249474","DOIUrl":"https://doi.org/10.1242/jeb.249474","url":null,"abstract":"Symbiotic interactions, central to most life on Earth, are interwoven associations that vary in intimacy and duration. Some of the most well-known examples of symbioses occur between animals and gut bacteria. These associations lead to physiological integration of host and symbionts. The diversity of microbes within animal hosts can make studying them technically challenging. Thus, most science heavily focuses on the animal side of symbioses, limiting study of the microbial symbionts to characterization of their genetic and functional diversity. These limitations are minimized in Heteropteran insects that have specialized midguts that separately house single symbiont species away from ingested food. These insect-bacteria associations allow us to address fundamental questions as to how both hosts and symbionts change to establish a cooperative relationship. In this study, through ex vivo and in vivo observations of cellular behaviors, we explore concurrent structural and cellular dynamics in both the squash bug host (Anasa tristis) and its Caballeronia zhejiangensis symbionts during the initiation of symbiosis. We elucidate how C. zhejiangensis is sequestered within a specialized symbiotic organ within the A. tristis midgut, how the symbiont uses active motility to reach the symbiotic organ, how symbionts colonize host crypts within the organ and how host crypt morphogenesis progresses during the initiation of symbiotic interactions. Our findings provide insight into how dynamic cellular activity and morphological development reciprocally change in both host and symbiont as they establish symbiotic interactions.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065655","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

Linking warmer nest temperatures to reduced body size in seabird nestlings: Possible mitochondrial bioenergetic and proteomic mechanisms.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-31 DOI: 10.1242/jeb.249880

Stefania Casagrande, Giacomo Dell'Omo

{"title":"Linking warmer nest temperatures to reduced body size in seabird nestlings: Possible mitochondrial bioenergetic and proteomic mechanisms.","authors":"Stefania Casagrande, Giacomo Dell'Omo","doi":"10.1242/jeb.249880","DOIUrl":"https://doi.org/10.1242/jeb.249880","url":null,"abstract":"Rapid reduction of body size in populations responding to global warming suggests the involvement of temperature-dependent physiological adjustments during growth, such as mitochondrial alterations, in the efficiency of producing metabolic energy, a process that is poorly explored, especially in endotherms. Here, we examined the mitochondrial metabolism and proteomic profile of red blood cells in relation to body size and cellular energetics in nestling shearwaters (Calonectris diomedea) developing at different natural temperatures. We found that nestlings of warmer nests had lighter bodies and smaller beaks at fledging. Despite there was no effect of environmental temperature on cellular metabolic rate, mitochondria had a higher inefficiency in coupling metabolism to allocable energy production, as evidenced by bioenergetic and proteomic analyses. Mitochondrial inefficiency was positively related to cellular stress represented by heat shock proteins, antioxidant enzymes and markers of mitochondrial stress. The observed temperature-related mitochondrial inefficiency was associated with reduced beak size and body mass and was linked to a downregulation of cellular growth factors and growth promoters determining body size. By analyzing the links between environmental temperature, mitochondrial inefficiency and body size we discuss the physiological alterations that free-living birds, and probably other endotherms, need to trigger to cope with a warming world.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065677","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

Is this scenery worth exploring? Insight into the visual encoding of navigating ants.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-30 DOI: 10.1242/jeb.249935

Leo Clement, Sebastian Schwarz, Blandine Mahot-Castaing, Antoine Wystrach

{"title":"Is this scenery worth exploring? Insight into the visual encoding of navigating ants.","authors":"Leo Clement, Sebastian Schwarz, Blandine Mahot-Castaing, Antoine Wystrach","doi":"10.1242/jeb.249935","DOIUrl":"https://doi.org/10.1242/jeb.249935","url":null,"abstract":"Solitary foraging insects like desert ants rely heavily on vision for navigation. While ants can learn visual scenes, it is unclear what cues they use to decide if a scene is worth exploring at the first place. To investigate this, we recorded the motor behavior of Cataglyphis velox ants navigating in a virtual reality set-up (VR) and measured their lateral oscillations in response to various unfamiliar visual scenes under both closed-loop and open-loop conditions. In naturalistic-looking panorama, ants display regular oscillations as observed outdoors, allowing them to efficiently scan the scenery. Manipulations of the virtual environment revealed distinct functions served by dynamic and static cues. Dynamic cues, mainly rotational optic flow, regulated the amplitude of oscillations but not their regularity. Conversely, static cues had little impact on the amplitude but were essential for producing regular oscillations. Regularity of oscillations decreased in scenes with only horizontal, only vertical or no edges but was restored in scenes with both edge types together. The actual number of edges, the visual pattern heterogeneity across azimuths, the light intensity or the relative elevation of brighter regions did not affect oscillations. We conclude that ants use a simple but functional heuristic to determine if the visual world is worth exploring, relying on the presence of at least two different edge orientations in the scene.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065674","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

It's a good thing that severely hypoxic salmon (Salmo salar) have a limited capacity to increase heart rate when warmed.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-30 DOI: 10.1242/jeb.249594

A K Gamperl, J J H Nati, K A Clow, R M Sandrelli, L Gerber, E S Porter, E C Peroni

{"title":"It's a good thing that severely hypoxic salmon (Salmo salar) have a limited capacity to increase heart rate when warmed.","authors":"A K Gamperl, J J H Nati, K A Clow, R M Sandrelli, L Gerber, E S Porter, E C Peroni","doi":"10.1242/jeb.249594","DOIUrl":"https://doi.org/10.1242/jeb.249594","url":null,"abstract":"With climate change, fish are facing rising temperatures, an increase in the frequency and severity of heat waves and hypoxia, sometimes concurrently. However, only limited studies have examined the combined effects of increases in temperature and hypoxia on fish physiology and survival. We measured the cardiorespiratory physiology of 12°C-acclimated Atlantic salmon when exposed acutely to normoxia [100% air saturation (sat.)] vs. 75 and 50% air sat., and then warmed to their critical thermal maximum (CTMax) at 2°C h-1. Fish exposed to 50% air sat. went bradycardic, were unable to increase heart rate (fH) when warmed, and had lower values for metabolic scope and CTMax (21.3 vs. 26.1°C in normoxic fish). Whereas the effects of 75% air sat. on cardiorespiratory parameters and CTMax were intermediate. We then used atropine (1.2 mg kg-1) and 8-cyclopentyltheophylline (CPT; 50 nmol kg-1) to investigate what role(s) cholinergic tone on the heart and cardiac adenosinergic effects, respectively, play in preventing severely hypoxic salmon (40% air sat.) from increasing fH when warmed. CPT had no/limited effects on salmon cardiorespiratory parameters and thermal tolerance. However, atropine increased fH in hypoxic fish and allowed it to rise with temperature, and this resulted in salmon that were much less tolerant to warming. Collectively, these results: 1) show that fish in severely hypoxic environments will be very susceptible to climate change-associated heat waves; and 2) suggest that cholinergic tone on the heart is not removed when severely hypoxic fish are exposed to rising temperatures to protect the heart's pumping capacity.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065676","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

The energetic cost of human walking as a function of uneven terrain amplitude.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-30 DOI: 10.1242/jeb.249840

Seyed-Saleh Hosseini-Yazdi, Arthur D Kuo

{"title":"The energetic cost of human walking as a function of uneven terrain amplitude.","authors":"Seyed-Saleh Hosseini-Yazdi, Arthur D Kuo","doi":"10.1242/jeb.249840","DOIUrl":"https://doi.org/10.1242/jeb.249840","url":null,"abstract":"Humans expend more energy walking on uneven terrain, but the amount varies across terrains. Few experimental characterizations exist, each describing terrain qualitatively without any relation to others or flat ground. This precludes mechanistic explanation of the energy costs. Here we show that energy cost varies smoothly and approximately quadratically as a function of terrain amplitude. We tested this with healthy adults (N=10) walking on synthetic uneven terrain with random step heights of parametrically controlled maximum amplitude (four conditions 0 - 0.045 m), and at four walking speeds (0.8 - 1.4 m.s-1). Both net metabolic rate and the rate of positive work increased approximately with amplitude squared and speed cubed (R2 = 0.74,0.82 respectively), as predicted by a simple walking model. The model requires work to redirect the body center of mass velocity between successive arcs described by pendulum-like legs, at proportional metabolic cost. Humans performed most of the greater work with terrain amplitude early in the single stance phase, and with speed later in stance during push-off. Work and energy rates changed with approximately linear proportionality, with a ratio or delta efficiency of 49.5% (R2 = 0.68). The efficiency was high enough to suggest substantial work performed passively by elastic tendon and not only by active muscle. Simple kinematic measures such as mid-swing foot clearance also increased with terrain amplitude (R2 = 0.65), possibly costing energy as well. Nevertheless, most of the metabolic cost of walking faster or on more uneven terrain can be explained mechanistically by the work performed.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065679","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

Ambient temperature leads to differential immune strategies in the subterranean rodent Ctenomys talarum.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-30 DOI: 10.1242/jeb.249634

María Celina Carrizo, Roxana Rita Zenuto, Facundo Luna, Ana Paula Cutrera

{"title":"Ambient temperature leads to differential immune strategies in the subterranean rodent Ctenomys talarum.","authors":"María Celina Carrizo, Roxana Rita Zenuto, Facundo Luna, Ana Paula Cutrera","doi":"10.1242/jeb.249634","DOIUrl":"https://doi.org/10.1242/jeb.249634","url":null,"abstract":"Animal thermoregulation may have significant costs and compete directly or indirectly with other energetically demanding processes, such as immune function. Although the subterranean environment is characterized by thermally-stable conditions, small changes in ambient temperature could be critical in shaping immunity. However, little is known about the effects of ambient temperature, in naturally varying ranges, on immunity of wild species. Therefore, to evaluate the effect of short-term exposure to ambient temperatures on energy metabolism and body temperature during the acute phase immune response (APR) in the subterranean rodent Ctenomys talarum, 70 adult animals were divided into 3 experimental groups exposed twice for 1 h to 15°C, 25°C or 32°C (below, at or near the upper limit of the thermoneutral zone, respectively) before and after injections with saline (C, control) or lipopolysaccharide (LPS, which induces the APR). Animals exposed to 25°C and 32°C showed a similar APR pattern, characterized by fever (average: 37.1°C and 37.7°C, respectively), a 16% increase in O2 consumption and an increase in the neutrophil/lymphocyte ratio (N/L). Body mass loss and symptoms of sickness behavior were detected from 1 and 3 h post injection. Individuals exposed to 15°C, increased their metabolic rate by 60%, showed frequent hypothermia (34.3°C on average) and the characteristic N/L increase was attenuated. Body mass loss and sickness behavior were mostly detected 24 h post injection. Our results suggest that the thermoregulation costs in C. talarum may limit the energy available for immunity, leading to different strategies to cope with infection.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065654","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

Evolutionary insights into gut acidification: Invertebrate-like mechanisms in the basal vertebrate hagfish.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-30 DOI: 10.1242/jeb.249641

Alyssa M Weinrauch, Garfield T Kwan, Marina Giacomin, Ian A Bouyoucos, Martin Tresguerres, Greg G Goss

{"title":"Evolutionary insights into gut acidification: Invertebrate-like mechanisms in the basal vertebrate hagfish.","authors":"Alyssa M Weinrauch, Garfield T Kwan, Marina Giacomin, Ian A Bouyoucos, Martin Tresguerres, Greg G Goss","doi":"10.1242/jeb.249641","DOIUrl":"https://doi.org/10.1242/jeb.249641","url":null,"abstract":"Acidification is a key component of digestion throughout metazoans. The gut digestive fluid of many invertebrates is acidified by the vesicular-type H+-ATPase (VHA). In contrast, vertebrates generate acidic gut fluids using the gastric H+/K+-ATPase (HKA); an evolutionary innovation linked with the appearance of a true stomach that greatly improves digestion, absorption, and immune function. Hagfishes are the most basal extant vertebrates, and their mechanism of digestive acidification remains unclear. Herein we report that the stomachless Pacific hagfish (Eptatretus stoutii) acidify their gut using the VHA, while searches of E. stoutii gut transcriptomes and the genome of a closely related hagfish species (E. burgerii) indicate they lack HKA, consistent with its emergence following the 2R whole genome duplication. Immunostaining revealed prominent VHA presence in the apical membrane of enterocytes and sub-apical expression of both VHA and sAC. Interestingly, akin to vertebrates, VHA was also observed in immature pancreatic-like zymogen granules and was noticeably absent from the mature granules. Furthermore, isolated gut sacs from fed hagfish demonstrate increased VHA-dependent luminal H+ secretion that is stimulated by the cAMP pathway. Overall, these results suggest that the hagfish gut shares the trait of VHA-dependent acidification with invertebrates, while simultaneously performing some roles of the pancreas and intestine of gnathostomes.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065661","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

Ghrelin suppresses water intake with a different physiological significance from atrial natriuretic peptide in conscious seawater-acclimated eels.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-30 DOI: 10.1242/jeb.249707

Hiroyuki Kaiya, Shigenori Nobata, Yoshio Takei

{"title":"Ghrelin suppresses water intake with a different physiological significance from atrial natriuretic peptide in conscious seawater-acclimated eels.","authors":"Hiroyuki Kaiya, Shigenori Nobata, Yoshio Takei","doi":"10.1242/jeb.249707","DOIUrl":"https://doi.org/10.1242/jeb.249707","url":null,"abstract":"In general, ghrelin is known as one of the orexigenic hormones in mammals. On the other hand, it has been shown that ghrelin inhibits water intake, which appear to be inconsistent with its role in the feeding response. In this study, the effect of ghrelin on water intake was comprehensively addressed using conscious seawater-acclimated eels known as an experimental model for water drinking behaviour. When injected intra-arterially, ghrelin inhibited copious drinking in a dose-dependent manner without affecting arterial pressure. This effect contrasted with the inhibitory effect of atrial natriuretic peptide (ANP) on drinking, which is synchronized with a vasodepressor effect. Similarly, intra-cerebroventricular injection of ghrelin also decreased the drinking rate without affecting arterial pressure. Continuous infusion of ghrelin from the ventral aorta also decreased the drinking rate, concomitant with an increase in plasma ghrelin concentration. The inhibitory effects of ghrelin on drinking were as potent and efficacious as those of ANP. The inhibitory action was not blocked by pre-treatment with a ghrelin receptor antagonist ([D-Lys3] GHRP-6); consistently, the agonist form (GHRP-6) injected intra-arterially did not show any inhibitory effect of ghrelin when injected peripherally. These studies demonstrated that ghrelin is a potent anti-dipsogen in eels without baroreflex and ANP secretion, and it is possible that ghrelin's effect might be mediated through another type of ghrelin receptor that [D-Lys3] GHRP-6 or GHRP-6 do not bind.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143065662","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

Light alters calling-song characteristics in crickets.

IF 2.8 2区生物学

Journal of Experimental Biology Pub Date : 2025-01-29 DOI: 10.1242/jeb.249404

Keren Levy, Yossef Yits'hak Aidan, Dror Paz, Heba Medlij, Amir Ayali

{"title":"Light alters calling-song characteristics in crickets.","authors":"Keren Levy, Yossef Yits'hak Aidan, Dror Paz, Heba Medlij, Amir Ayali","doi":"10.1242/jeb.249404","DOIUrl":"https://doi.org/10.1242/jeb.249404","url":null,"abstract":"Communication is crucial for mate choice and thus for the survival and fitness of most species. In the cricket, females choose males according to their calling-song attractiveness and, exhibiting positive phonotaxis they approach the chosen male. Light has been widely reported to induce changes in crickets' daily activity patterns, including the males' stridulation behavior. It had remained unknown, however, whether light also affects the calling-song properties and thus may consequently also alter female choice. Here we present a novel semi-automated process, enabling the analysis of calling-song properties in an extremely large sample size of recording sections from males subjected to lifelong light:dark (LD) or constant light (LL) conditions. Our findings revealed that the LD calling songs consisted of longer chirps, longer inter-syllable intervals, and a higher proportion of 4-syllable chirps compared to those of LL males. We also conducted some preliminary female choice experiments suggesting that females (reared in LD conditions) exposed to playbacks of male calling songs exhibit a preference towards LD over LL recordings. We therefore conclude that illumination conditions such as constant light affect the male crickets' calling-song properties in a manner that may be discernible to the females. It remains unclear, however, how and to what extent female mate choice and the species' overall fitness are affected by these changes.","PeriodicalId":15786,"journal":{"name":"Journal of Experimental Biology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143059300","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