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Liu L, Wang X, Zhang R, Li H, Zhu H. Targeted metabolomics revealed the seasonal plasticity of skin color and pigment metabolites in ornamental koi carp. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 281:116595. [PMID: 38878561 DOI: 10.1016/j.ecoenv.2024.116595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 06/05/2024] [Accepted: 06/12/2024] [Indexed: 07/16/2024]
Abstract
The koi carp is an ornamental fish that was obtained through artificial selection from the common carp (Cyprinus carpio L.). The most economically important traits of koi are their beautiful skin patterns in bright colors. As seasonality is an important factor in the biology and ecology of fish, we thus assumed that seasonal changes are involved in regulating the formation of skin color and patterns of koi carp. The white, red, cyan, and black skin colors from four varieties of scaleless koi carp (Doitsu Shiromuji (W), Doitsu Kohaku (WR), Doitsu Showa Sanke (WRI), and Kumonryu (WI)) were evaluated using the CIELab color space (lightness, redness, and yellowness) in different seasons. Compared to winter, the yellowness of the white color in all koi varieties decreased in summer and autumn. The black skin color areas in WRI and WI koi increased in summer and autumn compared to winter. The yellowness of the red color decreased only in WRI koi, while no changes were observed in WR koi. Targeted metabolomics analysis revealed that the levels of the structural pigment guanine of all koi varieties showed significant seasonal variation. Of seven detected carotenoids, the zeaxanthin and tunaxanthin contents in W, WI, and WRI koi changed with the seasons, while none of the carotenoids in WR koi were altered. Of the seven potential regulatory metabolites, epinephrine, melatonin, and cyclic adenosine monophosphate (cAMP) in all four koi varieties showed the highest levels in winter. A correlation analysis suggested that the seasonal changes in white skin color occurred through the epinephrine-cAMP pathway; melanin-dependent and carotenoid-dependent skin color changes occurred through melatonin in koi carp. This study demonstrated the seasonal plasticity of skin color in koi carp regulated by melatonin and epinephrine, associating with variety and color specificity.
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Affiliation(s)
- Lili Liu
- Fisheries Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100068, China; Beijing Key Laboratory of Fisheries Biotechnology, Beijing 100068, China
| | - Xiaowen Wang
- Fisheries Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100068, China; Beijing Key Laboratory of Fisheries Biotechnology, Beijing 100068, China
| | - Rong Zhang
- Fisheries Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100068, China; Beijing Key Laboratory of Fisheries Biotechnology, Beijing 100068, China
| | - Huijuan Li
- Fisheries Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100068, China; Beijing Key Laboratory of Fisheries Biotechnology, Beijing 100068, China
| | - Hua Zhu
- Fisheries Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100068, China; Beijing Key Laboratory of Fisheries Biotechnology, Beijing 100068, China.
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2
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Gur D, Moore AS, Deis R, Song P, Wu X, Pinkas I, Deo C, Iyer N, Hess HF, Hammer JA, Lippincott-Schwartz J. The physical and cellular mechanism of structural color change in zebrafish. Proc Natl Acad Sci U S A 2024; 121:e2308531121. [PMID: 38805288 PMCID: PMC11161791 DOI: 10.1073/pnas.2308531121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 04/02/2024] [Indexed: 05/30/2024] Open
Abstract
Many animals exhibit remarkable colors that are produced by the constructive interference of light reflected from arrays of intracellular guanine crystals. These animals can fine-tune their crystal-based structural colors to communicate with each other, regulate body temperature, and create camouflage. While it is known that these changes in color are caused by changes in the angle of the crystal arrays relative to incident light, the cellular machinery that drives color change is not understood. Here, using a combination of 3D focused ion beam scanning electron microscopy (FIB-SEM), micro-focused X-ray diffraction, superresolution fluorescence light microscopy, and pharmacological perturbations, we characterized the dynamics and 3D cellular reorganization of crystal arrays within zebrafish iridophores during norepinephrine (NE)-induced color change. We found that color change results from a coordinated 20° tilting of the intracellular crystals, which alters both crystal packing and the angle at which impinging light hits the crystals. Importantly, addition of the dynein inhibitor dynapyrazole-a completely blocked this NE-induced red shift by hindering crystal dynamics upon NE addition. FIB-SEM and microtubule organizing center (MTOC) mapping showed that microtubules arise from two MTOCs located near the poles of the iridophore and run parallel to, and in between, individual crystals. This suggests that dynein drives crystal angle change in response to NE by binding to the limiting membrane surrounding individual crystals and walking toward microtubule minus ends. Finally, we found that intracellular cAMP regulates the color change process. Together, our results provide mechanistic insight into the cellular machinery that drives structural color change.
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Affiliation(s)
- Dvir Gur
- Weizmann Institute of Science, Department of Molecular Genetics, Rehovot7610001, Israel
| | | | - Rachael Deis
- Weizmann Institute of Science, Department of Molecular Genetics, Rehovot7610001, Israel
| | - Pang Song
- HHMI, Janelia Research Campus, Ashburn, VA20147
| | - Xufeng Wu
- Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD20892
| | - Iddo Pinkas
- Weizmann Institute of Science, Department of Chemical Research Support, Rehovot7610001, Israel
| | - Claire Deo
- HHMI, Janelia Research Campus, Ashburn, VA20147
| | | | | | - John A. Hammer
- Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD20892
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3
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Ni Y, Liu J, Han H, Yu Q, Yang L, Xu Z, Jiang C, Liu L, Xu W. Visualized in-sensor computing. Nat Commun 2024; 15:3454. [PMID: 38658551 PMCID: PMC11043433 DOI: 10.1038/s41467-024-47630-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 04/08/2024] [Indexed: 04/26/2024] Open
Abstract
In artificial nervous systems, conductivity changes indicate synaptic weight updates, but they provide limited information compared to living organisms. We present the pioneering design and production of an electrochromic neuromorphic transistor employing color updates to represent synaptic weight for in-sensor computing. Here, we engineer a specialized mechanism for adaptively regulating ion doping through an ion-exchange membrane, enabling precise control over color-coded synaptic weight, an unprecedented achievement. The electrochromic neuromorphic transistor not only enhances electrochromatic capabilities for hardware coding but also establishes a visualized pattern-recognition network. Integrating the electrochromic neuromorphic transistor with an artificial whisker, we simulate a bionic reflex system inspired by the longicorn beetle, achieving real-time visualization of signal flow within the reflex arc in response to environmental stimuli. This research holds promise in extending the biomimetic coding paradigm and advancing the development of bio-hybrid interfaces, particularly in incorporating color-based expressions.
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Affiliation(s)
- Yao Ni
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China
| | - Jiaqi Liu
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China
| | - Hong Han
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China
| | - Qianbo Yu
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China
| | - Lu Yang
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China
| | - Zhipeng Xu
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China
| | - Chengpeng Jiang
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China
| | - Lu Liu
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China
| | - Wentao Xu
- Institute of Optoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China.
- Shenzhen Research Institute of Nankai University, Shenzhen, 518000, China.
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4
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Zhou Z, Sun Y, Yang J, Abliz Z. Mapping the Metabolic Characteristics and Perturbation of Adult Casper Zebrafish by Ambient Mass Spectrometry Imaging. Metabolites 2024; 14:204. [PMID: 38668332 PMCID: PMC11051737 DOI: 10.3390/metabo14040204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024] Open
Abstract
Casper, a type of transparent mutant-line zebrafish, was generated to overcome the opaque trunk of an adult zebrafish for tumor modeling to realize real-time visualization of transplanted cells in vivo. However, the molecular information at the metabolic level has not received much attention. Herein, a spatially resolved metabolomics method based on an airflow-assisted desorption electrospray ionization-mass spectrometry imaging (AFADESI-MSI) system for whole-body zebrafish was used to investigate small molecules and the distribution of adult casper (Mitfaw2/w2, roya9/a9) and the differences from wild-type zebrafish. Finally, the spatial distribution information of more than 1500 endogenous ions was obtained in positive and negative detection modes, and 186 metabolites belonging to a variety of structural categories were identified or annotated. Compared with wild-type samples, 85 variables, including 37 known metabolites, were screened out. In addition, the disordered metabolic pathways caused by the genetic mutation were excavated, involving downregulation of purine metabolism and arachidonic acid metabolism, upregulation of glycerophospholipid metabolism, and biosynthesis of unsaturated fatty acids. All these results were observed in the most intuitive way through MSI. This study revealed important metabolic characteristics of and perturbation in adult casper zebrafish, and provides indispensable fundamental knowledge for tumor research based on it.
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Affiliation(s)
- Zhi Zhou
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China;
- College of Life and Environmental Sciences, Minzu University of China, 27 Zhongguancun South Avenue, Beijing 100081, China; (Y.S.); (J.Y.)
| | - Yue Sun
- College of Life and Environmental Sciences, Minzu University of China, 27 Zhongguancun South Avenue, Beijing 100081, China; (Y.S.); (J.Y.)
| | - Ji Yang
- College of Life and Environmental Sciences, Minzu University of China, 27 Zhongguancun South Avenue, Beijing 100081, China; (Y.S.); (J.Y.)
| | - Zeper Abliz
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, China;
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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5
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Zhao N, Jiang K, Ge X, Huang J, Wu C, Chen SX. Neurotransmitter norepinephrine regulates chromatosomes aggregation and the formation of blotches in coral trout Plectropomus leopardus. FISH PHYSIOLOGY AND BIOCHEMISTRY 2024; 50:705-719. [PMID: 38294642 DOI: 10.1007/s10695-024-01300-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 01/10/2024] [Indexed: 02/01/2024]
Abstract
Color changes and pattern formations can represent strategies of the utmost importance for the survival of individuals or of species. Previous studies have associated capture with the formation of blotches (areas with light color) of coral trout, but the regulatory mechanisms link the two are lacking. Here, we report that capture induced blotches formation within 4-5 seconds. The blotches disappeared after anesthesia dispersed the pigment cells and reappeared after electrical stimulation. Subsequently, combining immunofluorescence, transmission electron microscopy and chemical sympathectomy, we found blotches formation results from activation of catecholaminergic neurons below the pigment layer. Finally, the in vitro incubation and intraperitoneal injection of norepinephrine (NE) induced aggregation of chromatosomes and lightening of body color, respectively, suggesting that NE, a neurotransmitter released by catecholaminergic nerves, mediates blotches formation. Our results demonstrate that acute stress response-induced neuronal activity can drive rapid changes in body color, which enriches our knowledge of physiological adaptations in coral reef fish.
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Affiliation(s)
- Nannan Zhao
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Ke Jiang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Xiaoyu Ge
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Jing Huang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Caiming Wu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Shi Xi Chen
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China.
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, Xiamen University, Xiamen, 361102, People's Republic of China.
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6
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Kasihmuddin SM, Cob ZC, Noor NM, Das SK. Effect of different temperature variations on the physiological state of catfish species: a systematic review. FISH PHYSIOLOGY AND BIOCHEMISTRY 2024; 50:413-434. [PMID: 38367084 DOI: 10.1007/s10695-024-01323-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 02/10/2024] [Indexed: 02/19/2024]
Abstract
Catfish are a highly diverse group of fish that are found in various regions across the globe. The significance of catfish culture extends to various aspects, including food security, economic advancement, preservation of cultural legacy, and ecological stewardship. The catfish industry is presently encountering unprecedented challenges as a consequence of the variability in water temperature caused by climate change. Temperature is a significant abiotic component that regulates and restricts fish physiology throughout their life cycle. The impact of severe temperatures on various species of catfish is dependent upon the magnitude of the stressor and additional influencing factors. This paper presents an analysis of the effects of temperature fluctuations on various aspects of catfish species, including growth and survival, blood parameters, enzymatic and hormone response, oxygen consumption rates, sound generation and hearing skills, nutritional requirements, and other phenotypic attributes. While this review is certainly not exhaustive, it offers a broad synopsis of the ideal temperature ranges that are most favorable for several catfish species. In-depth research to investigate the interacting impacts of severe temperature occurrences in conjunction with other associated environmental stresses on a wider variety of catfish species is crucial in order to further our understanding of how catfish species will respond to the anticipated climate change in the future.
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Affiliation(s)
- Sonia Mohd Kasihmuddin
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor Darul Ehsan, Malaysia
| | - Zaidi Che Cob
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor Darul Ehsan, Malaysia
- Marine Ecosystem Research Centre (EKOMAR), Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor Darul Ehsan, Malaysia
| | - Noorashikin Md Noor
- Earth Observation Centre, Institute of Climate Change, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor Darul Ehsan, Malaysia.
| | - Simon Kumar Das
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor Darul Ehsan, Malaysia
- Marine Ecosystem Research Centre (EKOMAR), Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor Darul Ehsan, Malaysia
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7
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Souto-Neto JA, David DD, Zanetti G, Sua-Cespedes C, Freret-Meurer NV, Moraes MN, de Assis LVM, Castrucci AMDL. Light-specific wavelengths differentially affect the exploration rate, opercular beat, skin color change, opsin transcripts, and the oxi-redox system of the longsnout seahorse Hippocampus reidi. Comp Biochem Physiol A Mol Integr Physiol 2024; 288:111551. [PMID: 37972916 DOI: 10.1016/j.cbpa.2023.111551] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
Light is a strong stimulus for the sensory and endocrine systems. The opsins constitute a large family of proteins that can respond to specific light wavelengths. Hippocampus reidi is a near-threatened seahorse that has a diverse color pattern and sexual dimorphism. Over the years, H. reidi's unique characteristics, coupled with its high demand and over-exploitation for the aquarium trade, have raised concerns about its conservation, primarily due to their significant impact on wild populations. Here, we characterized chromatophore types in juvenile and adult H. reidi in captivity, and the effects of specific light wavelengths with the same irradiance (1.20 mW/cm2) on color change, growth, and survival rate. The xanthophores and melanophores were the major components of H. reidi pigmentation with differences in density and distribution between life stages and sexes. In the eye and skin of juveniles, the yellow (585 nm) wavelength induced a substantial increase in melanin levels compared to the individuals kept under white light (WL), blue (442 nm), or red (650 nm) wavelengths. In addition, blue and yellow wavelengths led to a higher juvenile mortality rate in comparison to the other treatments. Adult seahorses showed a rhythmic color change over 24 h, the highest reflectance values were obtained in the light phase, representing a daytime skin lightening for individuals under WL, blue and yellow wavelength, with changes in the acrophase. The yellow wavelength was more effective on juvenile seahorse pigmentation, while the blue wavelength exerted a stronger effect on the regulation of adult physiological color change. Dramatic changes in the opsin mRNA levels were life stage-dependent, which may infer ontogenetic opsin functions throughout seahorses' development. Exposure to specific wavelengths differentially affected the opsins mRNA levels in the skin and eyes of juveniles. In the juveniles, skin transcripts of visual (rh1, rh2, and lws) and non-visual opsins (opn3 and opn4x) were higher in individuals under yellow light. While in the juvenile's eyes, only rh1 and rh2 had increased transcripts influenced by yellow light; the lws and opn3 mRNA levels were higher in juveniles' eyes under WL. Prolonged exposure to yellow wavelength stimulates a robust increase in the antioxidant enzymes sod1 and sod2 mRNA levels. Our findings indicate that changes in the visible light spectrum alter physiological processes at different stages of life in H. reidi and may serve as the basis for a broader discussion about the implications of artificial light for aquatic species in captivity.
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Affiliation(s)
- José Araújo Souto-Neto
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil; Laboratory of Micropollutants, Biophysics Institute Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Daniela Dantas David
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Giovanna Zanetti
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Cristhian Sua-Cespedes
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | | | - Maria Nathália Moraes
- Laboratory of Molecular Chronobiology, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, Brazil
| | | | - Ana Maria de Lauro Castrucci
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil; Department of Biology, University of Virginia, Charlottesville, United States.
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8
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Keren-Rotem T, Main DC, Barocas A, Donaire-Barroso D, Haddas-Sasson M, Vila C, Shaharabany T, Wolf L, Tolley KA, Geffen E. Genetic and behavioural factors affecting interpopulation colour pattern variation in two congeneric chameleon species. ROYAL SOCIETY OPEN SCIENCE 2024; 11:231554. [PMID: 38234439 PMCID: PMC10792394 DOI: 10.1098/rsos.231554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/19/2023] [Indexed: 01/19/2024]
Abstract
We conducted a study on interpopulation variation of colour patterns in two congeneric chameleon species, which have an analogous life history. Both species are able to rapidly change colour pattern, and their context-dependent colour patterns often vary across a wide geographical range. Specifically, we tested four hypotheses that can explain the observed interpopulation variation of colour patterns by a series of behavioural field trials where the colour patterns of individuals were recorded and later analysed by a deep neural network algorithm. We used redundancy analysis to relate genetic, spectral and behavioural predictors to interpopulation colour pattern distance. Our results showed that both isolation by distance (IBD) and alternative mating tactics were significant predictors for interpopulation colour pattern variation in Chamaeleo chamaeleon males. By contrast, in Chamaeleo dilepis, the interpopulation colour pattern variation was largely explained by IBD, and evidence for alternative mating tactics was absent. In both chameleon species, the environmental colours showed no evidence of influencing chameleon interpopulation colour pattern variation, regardless of sex or behavioural context. This contrasting finding suggests that interpopulation context-dependent colour pattern variations in each species are maintained under a different set of selective pressures or circumstances.
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Affiliation(s)
- Tammy Keren-Rotem
- Ecology Department, Israel Nature and Parks Authority, Jerusalem, Israel
| | - Devon C. Main
- Centre for Ecological Genomics and Wildlife Conservation, University of Johannesburg, Auckland Park Campus, Johannesburg, South Africa
| | - Adi Barocas
- San Diego Zoo Wildlife Alliance, Escondido, CA, USA
- Wildlife Conservation Research Unit, University of Oxford, Oxford, UK
| | | | | | - Carles Vila
- Doñana Biological Station (EBD-CSIC), Seville, Spain
| | - Tal Shaharabany
- The Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - Lior Wolf
- School of Computer Science, Tel Aviv University, Tel Aviv, Israel
| | - Krystal A. Tolley
- Centre for Ecological Genomics and Wildlife Conservation, University of Johannesburg, Auckland Park Campus, Johannesburg, South Africa
- Kirstenbosch Research Centre, South African National Biodiversity Institute, Cape Town, South Africa
| | - Eli Geffen
- School of Zoology, Tel Aviv University, Tel Aviv, Israel
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9
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Mubashshir M, Ahmad N, Negi T, Sharma RB, Sköld HN, Ovais M. Exploring the mechanisms and impacts of melatonin on fish colouration. FISH PHYSIOLOGY AND BIOCHEMISTRY 2023; 49:1511-1525. [PMID: 37982969 DOI: 10.1007/s10695-023-01271-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 11/09/2023] [Indexed: 11/21/2023]
Abstract
The pineal hormone melatonin is a multi-functional molecule with a recognized role in pigment aggregation in chromatophores, mediating its actions through binding to subtypes of its specific receptors. Since its discovery, melatonin has been known to be responsible for pigment aggregation towards the cell centre in fishes, including their embryos, as an adaptation to reduced light and thus results in pale body colouration. Diversity exists in the sensitivity of melanophores towards melatonin at interspecies, intraspecific levels, seasons, and amongst chromatophores at different regions of the animal body. In most of the fishes, melatonin leads to their skin paling at night. It is indicated that the melatonin receptors have characteristically maintained to show the same aggregating effects in fishes and other vertebrates in the evolutionary hierarchy. However, besides this aggregatory effect, melatonin is also responsible for pigment dispersion in certain fishes. Here is the demand in our review to explore further the nature of the dispersive behaviour of melatonin through the so-called β-melatonin receptors. It is clear that the pigment translocations in lower vertebrates under the effect of melatonin are mediated through the melatonin receptors coupled with other hormonal receptors as well. Therefore, being richly supplied with a variety of receptors, chromatophores and melanocytes can be used as in vitro test models for pharmacological applications of known and novel drugs. In this review, we present diverse effects of melatonin on chromatophores of fishes in particular with appropriate implications on most of the recent findings.
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Affiliation(s)
- Muhammad Mubashshir
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India.
- Department of Life Sciences, Faculty of Basic & Applied Sciences, Vivekananda Global University, Jaipur, Rajasthan, 303012, India.
| | - Nabeel Ahmad
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India
| | - Tripti Negi
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India
| | - Renu Bala Sharma
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India
| | | | - Mohd Ovais
- Department of Bio-Science, Barkatullah University, Bhopal, MP, 462026, India
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10
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Kim L, Kim SA, An YJ. Microfibers from cigarette butts can induce exoskeletal alteration in whiteleg shrimp (Penaeus vannamei). MARINE POLLUTION BULLETIN 2023; 197:115734. [PMID: 37922758 DOI: 10.1016/j.marpolbul.2023.115734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/07/2023]
Abstract
Cigarette butts (CB) are a source of microfibers (MFs) in aquatic environments, posing a risk to the health of aquatic organisms. Research has been focused on examining the toxicity of CBs on ecological receptors, including invertebrates. More focus has been on death, growth, or movement inhibition of but less on exoskeletal effects in malacostracans. We evaluated the alteration in the carapace structure of whiteleg shrimp (Penaeus vannamei Boone, 1931) caused by MFs derived from CBs (CB-MF). Exposure to CB-MF damaged the gills, the main organs adsorbing calcium in shrimps to generate a hard carapace, disturbing calcium uptake via respiration. Rapid ecdysis caused on CB-MF exposure reduced the environmental adaptation capacity of crustaceans in the absence of normal pigments in the chromatophore of the carapace. These findings indicate that MFs released from CBs released into the aquatic environment can adversely affect exoskeletal alteration within the overall ecosystem.
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Affiliation(s)
- Lia Kim
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Sang A Kim
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Youn-Joo An
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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11
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Kratochwil CF, Mallarino R. Mechanisms Underlying the Formation and Evolution of Vertebrate Color Patterns. Annu Rev Genet 2023; 57:135-156. [PMID: 37487589 PMCID: PMC10805968 DOI: 10.1146/annurev-genet-031423-120918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Vertebrates exhibit a wide range of color patterns, which play critical roles in mediating intra- and interspecific communication. Because of their diversity and visual accessibility, color patterns offer a unique and fascinating window into the processes underlying biological organization. In this review, we focus on describing many of the general principles governing the formation and evolution of color patterns in different vertebrate groups. We characterize the types of patterns, review the molecular and developmental mechanisms by which they originate, and discuss their role in constraining or facilitating evolutionary change. Lastly, we outline outstanding questions in the field and discuss different approaches that can be used to address them. Overall, we provide a unifying conceptual framework among vertebrate systems that may guide research into naturally evolved mechanisms underlying color pattern formation and evolution.
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Affiliation(s)
| | - Ricardo Mallarino
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA;
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12
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Francis C, Hale A, Berken J, Joanen T, Merchant M. Morphological and Ontogenetic Skin Color Changes in the American Alligator ( Alligator mississippiensis). Animals (Basel) 2023; 13:3440. [PMID: 38003058 PMCID: PMC10668839 DOI: 10.3390/ani13223440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/15/2023] [Accepted: 10/16/2023] [Indexed: 11/26/2023] Open
Abstract
To assess skin color change in alligators, we maintained animals in differently lighted environments and also measured skin colors in an ontogenetic series of wild animals. Juvenile alligators maintained in black enclosures exhibited a gradual lightening of skin color when shifted to white enclosures, and these observed changes were reversible. A histological examination of the skins of alligators maintained in dark tanks showed that the dermis exhibited a dense layer of pigmented cells, while samples from the same animals in light environments exhibited a more diffuse pigmented layer. As alligators grow, they exhibit an ontogenetic loss of stripes that may aid in crypsis and predation. Hatchlings have intense black and yellow vertical stripes that darken with age; adults are a more homogenous black/gray color. Since alligators live in temperate climates and adults have lower surface area/volume ratios, which can be detrimental for the absorption of radiant energy, the darker color of larger animals may also aid in thermoregulation. Alligators at the northern end of their range, with colder climates, exhibited darker skin tones, and the ontogenetic extinction of stripes occurred at a more accelerated rate compared to animals in southern, warmer regions, supporting the idea that latitude-dependent ontogenetic color shift has a role in thermoregulation.
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Affiliation(s)
- Cadre Francis
- Department of Chemistry, McNeese State University, Lake Charles, LA 70605, USA
| | - Amber Hale
- Department of Biology, McNeese State University, Lake Charles, LA 70605, USA;
| | - Jennifer Berken
- Department of Mathematical Sciences, McNeese State University, Lake Charles, LA 70605, USA;
| | - Ted Joanen
- Louisiana Department of Wildlife and Fisheries, Grand Chenier, LA 70808, USA;
| | - Mark Merchant
- Department of Chemistry, McNeese State University, Lake Charles, LA 70605, USA
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13
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Swanson NE, Gluesenkamp AG, Donny AE, Mcgaugh SE. Developmental environment contributes to rapid trait shifts among newly colonized subterranean habitats. Zool Res 2023; 44:808-820. [PMID: 37464938 PMCID: PMC10415762 DOI: 10.24272/j.issn.2095-8137.2022.488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/12/2023] [Indexed: 07/20/2023] Open
Abstract
Recent colonization of extreme environments provides unique opportunities to study the early steps of adaptation and the potential for rapid convergent evolution. However, phenotypic shifts during recent colonization may also be due to plasticity in response to changes in the rearing environment. Here, we analyzed a suite of morphological and behavioral traits in paired surface, subterranean, and facultatively subterranean Mexican tetras ( Astyanax mexicanus) from recent introductions in two separate watersheds outside of their native range. We found a variety of phenotypic and behavioral shifts between subterranean and surface populations that are similar to those observed in relatively ancient populations in Mexico. Despite this rapid morphological divergence, we found that most of these trait differences were due to plasticity in response to rearing environments. While most trait assays in common-garden, lab-raised fish indicated that phenotypic shifts in wild fish were the result of plasticity, we also found evidence of genetic control in several traits present in subterranean populations. Interestingly, wall-following behavior, an important subterranean foraging behavior, was greater in lab-born subterranean fish than in lab-born surface fish, suggesting rapid divergence of this trait between subterranean and surface populations. Thus, this study sheds light on the early steps of subterranean evolution, identifies potential rapid behavioral evolution, and suggests that plasticity in traits involving exploratory behavior may facilitate subterranean colonization.
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Affiliation(s)
- Nathan E Swanson
- Department of Fisheries, Wildlife and Conservation Biology, University of Minnesota, Saint Paul, MN 55108, USA
- Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, CA 92697-2525, USA. E-mail:
| | - Andrew G Gluesenkamp
- Center for Conservation and Research, San Antonio Zoo, San Antonio, Texas 78212, USA
| | - Alexandra E Donny
- Ecology, Evolution, and Behavior, University of Minnesota, Saint Paul, MN 55108, USA
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Suzanne E Mcgaugh
- Ecology, Evolution, and Behavior, University of Minnesota, Saint Paul, MN 55108, USA. E-mail:
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14
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Li BX, Luo Z, Yang WG, Sun H, Ding Y, Yu ZZ, Yang D. Adaptive and Adjustable MXene/Reduced Graphene Oxide Hybrid Aerogel Composites Integrated with Phase-Change Material and Thermochromic Coating for Synchronous Visible/Infrared Camouflages. ACS NANO 2023; 17:6875-6885. [PMID: 36996266 DOI: 10.1021/acsnano.3c00573] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Although single-function camouflage under infrared/visible bands has made great advances, it is still difficult for camouflage materials to cope with the synergy detection spanning both visible and infrared spectra and adapt to complex and variable scenarios. Herein, a trilayer composite integrating thermal insulation, heat absorption, solar/electro-thermal conversions, and thermochromism is fabricated for visible and infrared dual camouflages by combining anisotropic MXene/reduced graphene oxide hybrid aerogel with the n-octadecane phase change material in its bottom and a thermochromic coating on its upper surface. Benefiting from the synergetic heat-transfer suppression derived from the thermal insulation of the porous aerogel layer and the heat absorption of the n-octadecane phase-change layer, the composite can serve as a cloak to hide the target signatures from the infrared images of its ambient surroundings during the day in the jungle and at night in all scenes and can assist the target in escaping visual surveillance by virtue of its green appearance. For desert scenarios, the composite can spontaneously increase its surface temperature via its solar-thermal energy conversion, merging infrared images of the targets into the high-temperature surroundings; meanwhile, it can vary the surface color from the original green to yellow, enabling the target to visually disappear from ambient sands and hills. This work provides a promising strategy for designing adaptive and adjustable integrated camouflage materials to counter multiband surveillance in complicated environments.
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Affiliation(s)
- Bai-Xue Li
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhuo Luo
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Wei-Guang Yang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hao Sun
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yun Ding
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhong-Zhen Yu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dongzhi Yang
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
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15
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Cell Junction and Vesicle Trafficking-Mediated Melanosome/Melanin Transfer Are Involved in the Dynamic Transformation of Goldfish Carassius auratus Skin Color. Int J Mol Sci 2022; 23:ijms232012214. [PMID: 36293071 PMCID: PMC9603685 DOI: 10.3390/ijms232012214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/04/2022] [Accepted: 10/11/2022] [Indexed: 11/21/2022] Open
Abstract
Goldfish are one of the most popular models for studying the genetic diversity of skin color. Transcriptome sequencing (RNA-seq) and whole genome bisulfate sequencing (WGBS) of skin tissues from the third filial (F3) cyan (CN), black (BK), and white (WH) goldfish were conducted to analyze the molecular mechanism of color transformation in fish. The RNA-seq yielded 56 Gb of clean data and 56,627 transcripts from nine skin samples. The DEGs (differentially expressed genes) were enriched in cell junction cellular components and the tight junction pathway. Ninety-five homologs of the claudin family were predicted and 16 claudins were identified in correlation with skin color transformation. WGBS yielded 1079 Gb of clean data from 15 samples. Both the DEGs and the DMRs (differentially methylated regions) in the BK_CN group were found to be enriched in cytoskeleton reorganization and vesicle trafficking. Masson staining and TEM (transmission electron microscopy) confirmed the varied distribution and processes of melanosome/melanin in skin tissues. Our results suggested that cytoskeleton reorganization, cell junction, and the vesicle trafficking system played key roles in the transfer of the melanosome/melanin, and it was the extracellular translocation rather than the biosynthesis or metabolism of the melanin process that resulted in the color transformation of cyan goldfish. The data will facilitate the understanding of the molecular mechanisms underlying dynamic skin color transformation in goldfish.
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16
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Amdekar MS, Thaker M. Colours of stress in male Indian rock agamas predict testosterone levels but not performance. Horm Behav 2022; 144:105214. [PMID: 35696781 DOI: 10.1016/j.yhbeh.2022.105214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 05/26/2022] [Accepted: 05/31/2022] [Indexed: 11/28/2022]
Abstract
Rapid physiological colour change offers dynamic signalling opportunities that can reveal distinct information to receivers in different contexts. Information content in dynamic colours, however, is largely unexplored. In males of the Indian rock agama (Psammophilus dorsalis), stressful events, including male-male agonistic interactions, induce a colour change, wherein the dorsal band turns yellow and the lateral bands turn orange. We aimed to determine whether these pigment-based dynamic colours convey information about individual quality. Using an agamid-specific visual model, we first quantified the chromatic and achromatic contrasts of each colour component displayed by males during handling stress, which induces the maximal response of aggression-typical colours. We then measured baseline testosterone levels, morphology (body mass and size), and performance measures (bite force and sprint speed) of these lizards. Chromatic contrasts of the dorsal yellow and lateral orange bands, individually and relative to each other (internal pair), were negatively correlated with testosterone levels, while the chromatic contrast of the internal pair was positively correlated with body condition. The lack of an association between colour contrasts and both bite force and sprint speed indicate that the conspicuousness of colours expressed during stressful events, such as agonistic interactions, do not reveal male performance ability. Despite our expectations of a positive relationship with testosterone, morphology (body condition), and performance (bite force, sprint speed), we find that for P. dorsalis, the conspicuousness of stress-induced colours provide only some information about individual quality. We speculate that the dynamicity of physiological colours may influence their function as content-containing signals in social interactions.
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Affiliation(s)
- Madhura S Amdekar
- Centre for Ecological Sciences, Indian Institute of Science, Bengaluru 560012, India
| | - Maria Thaker
- Centre for Ecological Sciences, Indian Institute of Science, Bengaluru 560012, India.
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17
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Bu X, Bai H. Recent Progress of Bio-inspired Camouflage Materials: From Visible to Infrared Range. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2170-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Wen X, Yang M, Zhou K, Huang J, Fan X, Zhang W, Luo J. Transcriptomic and proteomic analyses reveal the common and unique pathway(s) underlying different skin colors of leopard coral grouper (Plectropomus leopardus). J Proteomics 2022; 266:104671. [PMID: 35788407 DOI: 10.1016/j.jprot.2022.104671] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 05/12/2022] [Accepted: 06/20/2022] [Indexed: 11/29/2022]
Abstract
To gain a comprehensive and unbiased molecular understanding of the different skin colors of P. leopardus, we used Illumina HiSeq 2500 and TMT (Tandem Mass Tag) to compare transcription and protein levels between red and black skin of P. leopardus. We identified 797 upregulated and 314 downregulated genes (differentially expressed genes; DEGs) in red (RG) compared with black (BG) skin of P. leopardus. We also identified 377 differentially abundant proteins (DAPs), including 314 upregulated and 63 downregulated proteins. These DEGs and DAPs were significantly enriched in melanin synthesis (e.g., pyrimidine metabolism, Phenylalanine, tyrosine, and tryptophan biosynthesis, melanogenesis, phenylalanine metabolism, and tyrosine metabolism), oxidative phosphorylation (e.g., phosphonate and phosphinate metabolism, and oxidative phosphorylation), energy metabolism (e.g., HIF-1, glycolysis/gluconeogenesis, fatty acid biosynthesis, and fatty acid degradation), and signal transduction (e.g., Wnt, calcium, MAPK, and cGMP-PKG signaling pathways), etc. Further analysis of MAPKs showed that the activation levels of its main members JNK1 and ERK1/2 differed significantly between red and black skin colors. After RNAi was used to interfere with ERK1/2, it was found that the local skin of the tail of P. leopardus would turn black. Combined transcriptome and proteome analysis showed that most DEGs-DAPs in red skin were higher than in black skin (58 were upregulated, 1 was downregulated, and 4 were opposite). These DEGs-DAPs showed that the differences between red and black skin tissues of P. leopardus were related primarily to energy metabolism, signal transduction and cytoskeleton. These findings are not only conducive to understand the skin color regulation mechanism of P. leopardus and other coral reef fish, but also provide an important descriptive to the breeding of color strains. SIGNIFICANCE OF THE STUDY: The skin color of P. leopardus gradually darkens or blackens due to environmental factors such as changes in light intensity and human activities, and this directly affects its ornamental and economic value. In this study, RNAseq and TMT were used to conduct comparative quantitative transcriptomics and proteomics and analyze differences between red and black P. leopardus skin. The results showed that energy metabolism, signal transduction and cytoskeleton were the main metabolic pathways causing their skin color differences. These findings contribute to existing data describing fish skin color, and provide information about protein levels, which are of great significance to a deeper understanding of the skin color regulation mechanism in P. leopardus and other coral reef fishes.
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Affiliation(s)
- Xin Wen
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan Academician Team Innovation Center, Hainan University, Haikou 570228, China.
| | - Min Yang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan Academician Team Innovation Center, Hainan University, Haikou 570228, China
| | - Kexin Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan Academician Team Innovation Center, Hainan University, Haikou 570228, China
| | - Jie Huang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan Academician Team Innovation Center, Hainan University, Haikou 570228, China
| | - Xin Fan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan Academician Team Innovation Center, Hainan University, Haikou 570228, China
| | - Weiwei Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan Academician Team Innovation Center, Hainan University, Haikou 570228, China
| | - Jian Luo
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan Academician Team Innovation Center, Hainan University, Haikou 570228, China.
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19
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Alfakih A, Watt PJ, Nadeau NJ. The physiological cost of colour change: evidence, implications and mitigations. J Exp Biol 2022; 225:275479. [PMID: 35593398 DOI: 10.1242/jeb.210401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Animals benefit from phenotypic plasticity in changing environments, but this can come at a cost. Colour change, used for camouflage, communication, thermoregulation and UV protection, represents one of the most common plastic traits in nature and is categorised as morphological or physiological depending on the mechanism and speed of the change. Colour change has been assumed to carry physiological costs, but current knowledge has not advanced beyond this basic assumption. The costs of changing colour will shape the evolution of colour change in animals, yet no coherent research has been conducted in this area, leaving a gap in our understanding. Therefore, in this Review, we examine the direct and indirect evidence of the physiological cost of colour change from the cellular to the population level, in animals that utilise chromatophores in colour change. Our Review concludes that the physiological costs result from either one or a combination of the processes of (i) production, (ii) translocation and (iii) maintenance of pigments within the colour-containing cells (chromatophores). In addition, both types of colour change (morphological and physiological) pose costs as they require energy for hormone production and neural signalling. Moreover, our Review upholds the hypothesis that, if repetitively used, rapid colour change (i.e. seconds-minutes) is more costly than slow colour change (days-weeks) given that rapidly colour-changing animals show mitigations, such as avoiding colour change when possible. We discuss the potential implications of this cost on colour change, behaviour and evolution of colour-changing animals, generating testable hypotheses and emphasising the need for future work to address this gap.
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Affiliation(s)
- Ateah Alfakih
- Department of Biology, Faculty of Science and Arts, Albaha University, Almakhwah 65553, Saudi Arabia.,Ecology and Evolutionary Biology, School of Biosciences, University of Sheffield, Alfred Denny Building, Western Bank, Sheffield S10 2TN, UK
| | - Penelope J Watt
- Ecology and Evolutionary Biology, School of Biosciences, University of Sheffield, Alfred Denny Building, Western Bank, Sheffield S10 2TN, UK
| | - Nicola J Nadeau
- Ecology and Evolutionary Biology, School of Biosciences, University of Sheffield, Alfred Denny Building, Western Bank, Sheffield S10 2TN, UK
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20
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Monahan CF, Garner MM, Kiupel M. Chromatophoromas in Reptiles. Vet Sci 2022; 9:vetsci9030115. [PMID: 35324843 PMCID: PMC8955407 DOI: 10.3390/vetsci9030115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 11/22/2022] Open
Abstract
Chromatophoromas are neoplasms that arise from pigment cells of reptiles, amphibians, and fish. They include melanophoromas (melanomas), iridophoromas, and xanthophoromas. Most chromatophoromas develop spontaneously, but genetic and environmental factors may also play a role in their oncogenesis. The diagnosis is typically through histologic examination. Immunohistochemistry and electron microscopy can be helpful for diagnosing poorly differentiated and/or poorly pigmented neoplasms. Aggressive surgical excision is the current treatment of choice. This review describes the clinical presentation, gross appearance, diagnostic applications, clinical behavior, and treatment of chromatophoromas in reptiles.
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Affiliation(s)
- Colleen F. Monahan
- New Hampshire Veterinary Diagnostic Laboratory, University of New Hampshire, Durham, NH 03824, USA
- Correspondence:
| | | | - Matti Kiupel
- Veterinary Diagnostic Laboratory, Michigan State University, Lansing, MI 48910, USA;
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21
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Akat E, Yenmiş M, Pombal MA, Molist P, Megías M, Arman S, Veselỳ M, Anderson R, Ayaz D. Comparison of Vertebrate Skin Structure at Class Level: A Review. Anat Rec (Hoboken) 2022; 305:3543-3608. [DOI: 10.1002/ar.24908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 02/14/2022] [Accepted: 02/21/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Esra Akat
- Ege University, Faculty of Science, Biology Department Bornova, İzmir Turkey
| | - Melodi Yenmiş
- Ege University, Faculty of Science, Biology Department Bornova, İzmir Turkey
| | - Manuel A. Pombal
- Universidade de Vigo, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía‐IBIV Vigo, España
| | - Pilar Molist
- Universidade de Vigo, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía‐IBIV Vigo, España
| | - Manuel Megías
- Universidade de Vigo, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía‐IBIV Vigo, España
| | - Sezgi Arman
- Sakarya University, Faculty of Science and Letters, Biology Department Sakarya Turkey
| | - Milan Veselỳ
- Palacky University, Faculty of Science, Department of Zoology Olomouc Czechia
| | - Rodolfo Anderson
- Departamento de Zoologia, Instituto de Biociências Universidade Estadual Paulista São Paulo Brazil
| | - Dinçer Ayaz
- Ege University, Faculty of Science, Biology Department Bornova, İzmir Turkey
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22
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Goldenberg J, Bisschop K, D'Alba L, Shawkey MD. The link between body size, colouration and thermoregulation and their integration into ecogeographical rules: a critical appraisal in light of climate change. OIKOS 2022. [DOI: 10.1111/oik.09152] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jonathan Goldenberg
- Evolution and Optics of Nanostructures group, Dept of Biology, Ghent Univ. Ghent Belgium
| | - Karen Bisschop
- Inst. for Biodiversity and Ecosystem Dynamics, Univ. of Amsterdam Amsterdam the Netherlands
- Laboratory of Aquatic Biology, Dept of Biology, KU Leuven KULAK Kortrijk Belgium
| | - Liliana D'Alba
- Evolution and Optics of Nanostructures group, Dept of Biology, Ghent Univ. Ghent Belgium
| | - Matthew D. Shawkey
- Evolution and Optics of Nanostructures group, Dept of Biology, Ghent Univ. Ghent Belgium
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23
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Do male panther chameleons use different aspects of color change to settle disputes? Naturwissenschaften 2022; 109:13. [DOI: 10.1007/s00114-022-01784-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 12/23/2021] [Accepted: 01/06/2022] [Indexed: 10/19/2022]
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24
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Bertolesi GE, Debnath N, Malik HR, Man LLH, McFarlane S. Type II Opsins in the Eye, the Pineal Complex and the Skin of Xenopus laevis: Using Changes in Skin Pigmentation as a Readout of Visual and Circadian Activity. Front Neuroanat 2022; 15:784478. [PMID: 35126061 PMCID: PMC8814574 DOI: 10.3389/fnana.2021.784478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/13/2021] [Indexed: 01/17/2023] Open
Abstract
The eye, the pineal complex and the skin are important photosensitive organs. The African clawed frog, Xenopus laevis, senses light from the environment and adjusts skin color accordingly. For example, light reflected from the surface induces camouflage through background adaptation while light from above produces circadian variation in skin pigmentation. During embryogenesis, background adaptation, and circadian skin variation are segregated responses regulated by the secretion of α-melanocyte-stimulating hormone (α-MSH) and melatonin through the photosensitivity of the eye and pineal complex, respectively. Changes in the color of skin pigmentation have been used as a readout of biochemical and physiological processes since the initial purification of pineal melatonin from pigs, and more recently have been employed to better understand the neuroendocrine circuit that regulates background adaptation. The identification of 37 type II opsin genes in the genome of the allotetraploid X. laevis, combined with analysis of their expression in the eye, pineal complex and skin, is contributing to the elucidation of the role of opsins in the different photosensitive organs, but also brings new questions and challenges. In this review, we analyze new findings regarding the anatomical localization and functions of type II opsins in sensing light. The contribution of X. laevis in revealing the neuroendocrine circuits that regulate background adaptation and circadian light variation through changes in skin pigmentation is discussed. Finally, the presence of opsins in X. laevis skin melanophores is presented and compared with the secretory melanocytes of birds and mammals.
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Affiliation(s)
- Gabriel E. Bertolesi
- Department of Cell Biology and Anatomy, Hotchkiss Brain Institute and Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, AB, Canada
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25
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Zhao N, Ge X, Jiang K, Huang J, Wei K, Sun C, Chen SX. Ultrastructure and regulation of color change in blue spots of leopard coral trout Plectropomus leopardus. Front Endocrinol (Lausanne) 2022; 13:984081. [PMID: 36339398 PMCID: PMC9630599 DOI: 10.3389/fendo.2022.984081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/03/2022] [Indexed: 11/17/2022] Open
Abstract
The leopard coral trout generally exhibited numerous round, minute blue spots covering its head (about the size of nostril) and body (except ventral side). This is a characteristic that distinguishes them from similar species. Recently, however, we found the leopard coral trout with black spots. Here, the distribution and ultrastructure of chromatophores in the blue and black spots were investigated with light and transmission electron microscopies. The results showed that in the blue spots, two types of chromatophores are present in the dermis, with the light-reflecting iridophores located in the upper layer and the aggregated light-absorbing melanophores in the lower layer. Black spots have a similar chromatophore composition, except that the melanosomes within the melanophores disperse their dendritic processes to encircle the iridophores. Interestingly, after the treatment of forskolin, a potent adenylate cyclase activator, the blue spots on the body surface turned black. On the other hand, using the skin preparations in vitro, the electrical stimulation and norepinephrine treatment returned the spots to blue color again, indicating the sympathetic nerves were involved in regulating the coloration of blue spots. Taken together, our results revealed that the blue spots of the leopard coral trout can change color to black and vice versa, resulting from the differences in the distribution of melanosomes, which enriches our understanding of the body color and color changes of fishes.
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Affiliation(s)
- Nannan Zhao
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Xiaoyu Ge
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Ke Jiang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Jing Huang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Ke Wei
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Chao Sun
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Shi Xi Chen
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, Xiamen University, Xiamen, Fujian, China
- *Correspondence: Shi Xi Chen,
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TALEN-Mediated Gene Editing of slc24a5 (Solute Carrier Family 24, Member 5) in Kawakawa, Euthynnus affinis. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2021. [DOI: 10.3390/jmse9121378] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transcription activator-like effector (TALE) nucleases (TALENs) mediated gene editing methods are becoming popular and have revealed the staggering complexity of genome control during development. Here, we present a simple and efficient gene knockout using TALENs in kawakawa, Euthynnus affinis, using slc24a5. We examined slc24a5 gene expression and functional differences between two TALENs that hold the TALE scaffolds, +153/+47 and +136/+63 and target slc24a5. Developmental changes in slc24a5 transcripts were seen in early-stage embryos by real-time PCR; slc24a5 expression was first detected 48 h post fertilization (hpf), which increased dramatically at 72 hpf. Four TALENs, 47- and 63-type of two different target loci (A and B), respectively, were constructed using Platinum TALEN and evaluated in vitro by a single-strand annealing (SSA) assay. TALEN activities were further evaluated in vivo by injecting TALEN mRNAs in the two-cell stage of the zygote. Most of the TALEN-induced mutants showed mosaic patterns in the retinal pigment epithelium (RPE) and fewer melanin pigments on the body at 72 hpf and later when compared to the control, implying the gene’s association with melanin pigment formation. A heteroduplex mobility assay (HMA) and the genome sequence further confirmed the TALEN-induced mutations of substitution, insertion, and deletion at an endogenous locus.
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27
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Preißler K, Rodríguez A, Pröhl H. Evidence for coloration plasticity in the yellow-bellied toad, Bombina variegata. Ecol Evol 2021; 11:17557-17567. [PMID: 34938529 PMCID: PMC8668782 DOI: 10.1002/ece3.8391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 10/29/2021] [Accepted: 11/02/2021] [Indexed: 11/09/2022] Open
Abstract
Phenotypic adaptation in terms of background color matching to the local habitat is an important mechanism for survival in prey species. Thus, intraspecific variation in cryptic coloration is expected among localities with dissimilar habitat features (e.g., soil, vegetation). Yellow-bellied toads (Bombina variegata) display a dark dorsal coloration that varies between populations, assumed to convey crypsis. In this study, we explored I) geographic variation in dorsal coloration and II) coloration plasticity in B. variegata from three localities differing in substrate coloration. Using avian visual modeling, we found that the brightness contrasts of the cryptic dorsa were significantly lower on the local substrates than substrates of other localities. In experiments, individuals from one population were able to quickly change the dorsal coloration to match a lighter substrate. We conclude that the environment mediates an adaptation in cryptic dorsal coloration. We suggest further studies to test the mechanisms by which the color change occurs and explore the adaptive potential of coloration plasticity on substrates of varying brightness in B. variegata and other species.
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Affiliation(s)
- Kathleen Preißler
- Molecular Evolution and Systematics of AnimalsInstitute of BiologyUniversity LeipzigLeipzigGermany
| | - Ariel Rodríguez
- Institute of ZoologyUniversity of Veterinary Medicine of HannoverHannoverGermany
| | - Heike Pröhl
- Institute of ZoologyUniversity of Veterinary Medicine of HannoverHannoverGermany
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28
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Walton SJ, Silla AJ, Endler JA, Byrne PG. Does dietary β-carotene influence ontogenetic colour change in the southern corroboree frog? J Exp Biol 2021; 224:273479. [PMID: 34694382 DOI: 10.1242/jeb.243182] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/19/2021] [Indexed: 12/21/2022]
Abstract
Ontogenetic colour change occurs in a diversity of vertebrate taxa and may be closely linked to dietary changes throughout development. In various species, red, orange and yellow colouration can be enhanced by the consumption of carotenoids. However, a paucity of long-term dietary manipulation studies means that little is known of the role of individual carotenoid compounds in ontogenetic colour change. We know even less about the influence of individual compounds at different doses (dose effects). The present study aimed to use a large dietary manipulation experiment to investigate the effect of dietary β-carotene supplementation on colouration in southern corroboree frogs (Pseudophryne corroboree) during early post-metamorphic development. Frogs were reared on four dietary treatments with four β-carotene concentrations (0, 1, 2 and 3 mg g-1), with frog colour measured every 8 weeks for 32 weeks. β-Carotene was not found to influence colouration at any dose. However, colouration was found to become more conspicuous over time, including in the control treatment. Moreover, all frogs expressed colour maximally at a similar point in development. These results imply that, for our study species, (1) β-carotene may contribute little or nothing to colouration, (2) frogs can manufacture their own colour, (3) colour development is a continual process and (4) there may have been selection for synchronised development of colour expression. We discuss the potential adaptive benefit of ontogenetic colour change in P. corroboree. More broadly, we draw attention to the potential for adaptive developmental synchrony in the expression of colouration in aposematic species.
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Affiliation(s)
- Sara J Walton
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Aimee J Silla
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
| | - John A Endler
- Centre for Integrative Ecology, School of Life and Environmental Science, Deakin University, Geelong, VIC 3216, Australia
| | - Phillip G Byrne
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
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29
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Zúñiga-Vega JJ, Pruett JA, Ossip-Drahos AG, Campos SM, Seddon RJ, Price SL, Romero-Diaz C, Rivera JA, Vital-García C, Hews DK, Martins EP. Information out of the blue: phenotypic correlates of abdominal color patches in Sceloporus lizards. ZOOLOGY 2021; 149:125961. [PMID: 34592493 DOI: 10.1016/j.zool.2021.125961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 08/12/2021] [Accepted: 08/19/2021] [Indexed: 11/28/2022]
Abstract
Colorful ornaments are important visual signals for animal communication that can provide critical information about the quality of the signaler. In this study, we focused on different color characteristics of the abdominal patches of males of six lizard species from the genus Sceloporus. We addressed three main objectives. First, we examined if size, brightness, saturation, and conspicuousness of these ornaments are indicative of body size, condition, immune function, or levels of testosterone and corticosterone. Second, we evaluated if the distinct components of these abdominal patches (blue or green patches and black stripes) transmit similar information about the signaler, which would support the redundant signal hypothesis, or if these components are related to different phenotypic traits, which would support the multiple message hypothesis. Third, we compared the phenotypic correlates of these ornaments among our six species to understand the degree of conservatism in the signaling patterns or to find species-specific signals. Using data collected from males in natural conditions and a multi-model inference framework, we found that in most species the area of the patches and the brightness of the blue component are positively related to body size. Thus, these color characteristics are presumably indicative of the physical strength and competitive ability of males and these shared signals were likely inherited from a common ancestor. In half of the species, males in good body condition also exhibit relatively larger blue and black areas, suggesting that the expression of these ornaments is condition-dependent. Abdominal patches also provide information about immunocompetence of the males as indicated by different correlations between certain color characteristics and ectoparasite load, counts of heterophils, and the heterophil:lymphocyte ratio. Our findings reveal that area and brightness of the abdominal patches signal the size and body condition of males, whereas blue saturation and conspicuousness with respect to the surrounding substrate are indicative of immune condition, thus supporting the multiple message hypothesis. However, some of these correlations were not shared by all species and, hence, point to intriguing species-specific signals.
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Affiliation(s)
- J Jaime Zúñiga-Vega
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, Mexico City, 04510, Mexico.
| | - Jake A Pruett
- Department of Biology, Indiana State University, Science Building Room 283, 600 North Chestnut Street, Terre Haute, IN 47809, USA; Department of Biological Sciences, Southeastern Oklahoma State University, 425 W. University Boulevard, Durant, OK 74701, USA.
| | - Alison G Ossip-Drahos
- Department of Chemistry and Physical Sciences, Marian University, 3200 Cold Springs Road, Indianapolis, IN 46222, USA.
| | - Stephanie M Campos
- Biology Department, Swarthmore College, 500 College Avenue, Swarthmore, PA 19081, USA.
| | - Ryan J Seddon
- Department of Biology, Indiana State University, Science Building Room 283, 600 North Chestnut Street, Terre Haute, IN 47809, USA; Center for Global Communication Strategies, University of Tokyo, 3-8-4 Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
| | - Savannah L Price
- Department of Biology, Indiana State University, Science Building Room 283, 600 North Chestnut Street, Terre Haute, IN 47809, USA.
| | - Cristina Romero-Diaz
- School of Life Sciences, Arizona State University, 427 East Tyler Mall, Tempe, AZ 85287, USA.
| | - Julio A Rivera
- School of Life Sciences, Arizona State University, 427 East Tyler Mall, Tempe, AZ 85287, USA.
| | - Cuauhcihuatl Vital-García
- Departamento de Ciencias Veterinarias, Universidad Autónoma de Ciudad Juárez, Anillo Envolvente y Estocolmo s/n, Colonia Progresista, Ciudad Juárez, Chihuahua, 32310, Mexico.
| | - Diana K Hews
- Department of Biology, Indiana State University, Science Building Room 283, 600 North Chestnut Street, Terre Haute, IN 47809, USA.
| | - Emília P Martins
- School of Life Sciences, Arizona State University, 427 East Tyler Mall, Tempe, AZ 85287, USA.
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30
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Stuart-Fox D, Rankin KJ, Lutz A, Elliott A, Hugall AF, McLean CA, Medina I. Environmental gradients predict the ratio of environmentally acquired carotenoids to self-synthesised pteridine pigments. Ecol Lett 2021; 24:2207-2218. [PMID: 34350679 DOI: 10.1111/ele.13850] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/18/2021] [Accepted: 07/09/2021] [Indexed: 12/22/2022]
Abstract
Carotenoids are important pigments producing integument colouration; however, their dietary availability may be limited in some environments. Many species produce yellow to red hues using a combination of carotenoids and self-synthesised pteridine pigments. A compelling hypothesis is that pteridines replace carotenoids in environments where carotenoid availability is limited. To test this hypothesis, we quantified concentrations of five carotenoid and six pteridine pigments in multiple skin colours and individuals from 27 species of agamid lizards. We show that environmental gradients predict the ratio of carotenoids to pteridines; carotenoid concentrations are lower and pteridine concentrations higher in arid environments with low vegetation productivity. Both carotenoid and pteridine pigments were present in all species, but only pteridine concentrations explained colour variation among species and there were no correlations between carotenoid and pteridine pigments with a similar hue. These results suggest that in arid environments, where carotenoids are likely limited, species may compensate by synthesising more pteridines but do not necessarily replace carotenoids with pteridines of similar hue.
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Affiliation(s)
- Devi Stuart-Fox
- School of BioSciences, The University of Melbourne, Parkville, Vic, Australia
| | - Katrina J Rankin
- School of BioSciences, The University of Melbourne, Parkville, Vic, Australia
| | - Adrian Lutz
- Metabolomics Australia, The University of Melbourne, Parkville, Vic, Australia
| | - Adam Elliott
- School of BioSciences, The University of Melbourne, Parkville, Vic, Australia
| | - Andrew F Hugall
- Sciences Department, Museums Victoria, Carlton Gardens, Melbourne, Vic, Australia
| | - Claire A McLean
- School of BioSciences, The University of Melbourne, Parkville, Vic, Australia.,Sciences Department, Museums Victoria, Carlton Gardens, Melbourne, Vic, Australia
| | - Iliana Medina
- School of BioSciences, The University of Melbourne, Parkville, Vic, Australia
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31
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The effects of corticosterone and background colour on tadpole physiological plasticity. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2021; 39:100872. [PMID: 34224981 DOI: 10.1016/j.cbd.2021.100872] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/20/2021] [Accepted: 06/24/2021] [Indexed: 12/25/2022]
Abstract
Corticosterone (CORT)-mediated adaptive plasticity improves animal fitness in stressful environments. Although it brings ecological benefits, the cost potentially constrains its expression and evolution. Revealing the factors affecting plasticity costs is of great ecological and evolutionary significance. Evidence indicates that both CORT and background colour can induce metabolic changes in animals, which in turn determine phenotypic plasticity. However, whether and/or how CORT and background colour jointly act on plastic responses has not been studied. Here, this question has been investigated in amphibian tadpoles (Microhyla fissipes) exposed to CORT at different background colours (white or black) using integrated morphological, histological, and transcriptomic analyses. The results showed that CORT exposure increased relative tail length, immune function, and metabolic maintenance (i.e., transcription of substrate catabolism and oxidative phosphorylation) at the expense of reduction in growth rate and skin melanin level. The black background also increased relative tail length and metabolic maintenance (i.e., transcription of oxidative phosphorylation) at the cost of reduction in growth rate, but increased skin melanin level. The expression of critical pigmentation genes indicated that black background activated a distinct and opposite pigmentation regulating route to CORT. Although there was no interactive effect of background colour and CORT on phenotypic and metabolic variations, their additive effects further impact the trade-off between somatic growth, metabolic maintenance, and pigmentation in terms of resource allocation. In conclusion, the individual and additive effects of background colour and CORT exposure on tadpole plasticity were revealed. These results likely provide new insights into the environmental adaptation of animals.
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32
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Galipot P, Damerval C, Jabbour F. The seven ways eukaryotes produce repeated colour motifs on external tissues. Biol Rev Camb Philos Soc 2021; 96:1676-1693. [PMID: 33955646 DOI: 10.1111/brv.12720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 02/03/2023]
Abstract
The external tissues of numerous eukaryote species show repeated colour patterns, usually characterized by units that are present at least twice on the body. These dotted, striped or more complex phenotypes carry out crucial biological functions, such as partner recognition, aposematism or camouflage. Very diverse mechanisms explaining the formation of repeated colour patterns in eukaryotes have been identified and described, and it is timely to review this field from an evolutionary and developmental biology perspective. We propose a novel classification consisting of seven families of primary mechanisms: Turing(-like), cellular automaton, multi-induction, physical cracking, random, neuromuscular and printing. In addition, we report six pattern modifiers, acting synergistically with these primary mechanisms to enhance the spectrum of repeated colour patterns. We discuss the limitations of our classification in light of currently unexplored extant diversity. As repeated colour patterns require both the production of a repetitive structure and colouration, we also discuss the nature of the links between these two processes. A more complete understanding of the formation of repeated colour patterns in eukaryotes will require (i) a deeper exploration of biological diversity, tackling the issue of pattern elaboration during the development of non-model taxa, and (ii) exploring some of the most promising ways to discover new families of mechanisms. Good starting points include evaluating the role of mechanisms known to produce non-repeated colour patterns and that of mechanisms responsible for repeated spatial patterns lacking colouration.
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Affiliation(s)
- Pierre Galipot
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, 57 rue Cuvier, CP39, Paris, 75005, France.,Génétique Quantitative et Evolution-Le Moulon, Université Paris-Saclay, INRAE, CNRS, AgroParisTech, Gif-sur-Yvette, 91190, France
| | - Catherine Damerval
- Génétique Quantitative et Evolution-Le Moulon, Université Paris-Saclay, INRAE, CNRS, AgroParisTech, Gif-sur-Yvette, 91190, France
| | - Florian Jabbour
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, 57 rue Cuvier, CP39, Paris, 75005, France
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33
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Decoding the Evolution of Melanin in Vertebrates. Trends Ecol Evol 2021; 36:430-443. [DOI: 10.1016/j.tree.2020.12.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 12/18/2020] [Accepted: 12/23/2020] [Indexed: 02/08/2023]
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34
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Guo K, Zhong J, Zhu L, Xie F, Du Y, Ji X. The thermal dependence and molecular basis of physiological color change in Takydromus septentrionalis (Lacertidae). Biol Open 2021; 10:bio.058503. [PMID: 33593793 PMCID: PMC8015239 DOI: 10.1242/bio.058503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
One of the main functions of physiological color change is thermoregulation. This change occurs much more rapidly than morphological color change, but the underlying mechanism remains poorly understood. Here, we studied the thermal dependence and molecular basis of physiological color change in lizards using Takydromus septentrionalis (Lacertidae) as the model system. Body color was thermally sensitive, becoming increasingly light as body temperatures deviated from the level (∼30°C) preferred by this species. We identified 3389 differentially expressed genes (DEGs) between lizards at 24°C and 30°C, and 1,097 DEGs between lizards at 36°C and 30°C. Temperature affected the cAMP signal pathway, motor proteins, cytoskeleton, and the expression of genes related to melanocyte-stimulating hormone (MSH) and melanocyte-concentrating hormone (MCH). Our data suggest that the role of physiological color change in thermoregulation is achieved in T. septentrionalis by altering the arrangement of pigments and thus the amount of solar radiation absorbed and reflected. G protein-coupling system inhibits adenylate cyclase activity to transform ATP into cAMP and thereby causes rapid pigment aggregation. MCH deactivates the G proteins and thereby initiates pigment dispersion. This mechanism differs from that reported for teleost fish where MCH activates the G proteins and thereby causes pigment aggregation. This article has an associated First Person interview with the first author of the paper. Summary: G protein-coupling system inhibits adenylate cyclase activity to transform ATP into cAMP and thereby causes rapid pigment aggregation. MCH deactivates the G proteins and thereby initiates pigment dispersion.
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Affiliation(s)
- Kun Guo
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China.,Institute of Biodiversity Conservation and Utilization, College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, Zhejiang, China
| | - Jun Zhong
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China.,Institute of Biodiversity Conservation and Utilization, College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, Zhejiang, China
| | - Lin Zhu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
| | - Fan Xie
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
| | - Yu Du
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China.,MOE Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Sanya 572022, Hainan, China
| | - Xiang Ji
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China .,Institute of Biodiversity Conservation and Utilization, College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, Zhejiang, China.,MOE Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Sanya 572022, Hainan, China
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35
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Vissio PG, Darias MJ, Di Yorio MP, Pérez Sirkin DI, Delgadin TH. Fish skin pigmentation in aquaculture: The influence of rearing conditions and its neuroendocrine regulation. Gen Comp Endocrinol 2021; 301:113662. [PMID: 33220300 DOI: 10.1016/j.ygcen.2020.113662] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 11/05/2020] [Accepted: 11/12/2020] [Indexed: 12/14/2022]
Abstract
Skin pigmentation pattern is a species-specific characteristic that depends on the number and the spatial combination of several types of chromatophores. This feature can change during life, for example in the metamorphosis or reproductive cycle, or as a response to biotic and/or abiotic environmental cues (nutrition, UV incidence, surrounding luminosity, and social interactions). Fish skin pigmentation is one of the most important quality criteria dictating the market value of both aquaculture and ornamental species because it serves as an external signal to infer its welfare and the culture conditions used. For that reason, several studies have been conducted aiming to understand the mechanisms underlying fish pigmentation as well as the influence exerted by rearing conditions. In this context, the present review focuses on the current knowledge on endocrine regulation of fish pigmentation as well as on the aquaculture conditions affecting skin coloration. Available information on Iberoamerican fish species cultured is presented.
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Affiliation(s)
- Paula G Vissio
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental. Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET, Buenos Aires, Argentina.
| | - Maria J Darias
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - María P Di Yorio
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental. Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET, Buenos Aires, Argentina
| | - Daniela I Pérez Sirkin
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental. Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET, Buenos Aires, Argentina
| | - Tomás H Delgadin
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental. Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires. Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET, Buenos Aires, Argentina
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36
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Korzan WJ, Summers TR, Summers CH. Neural and endocrine responses to social stress differ during actual and virtual aggressive interactions or physiological sign stimuli. Behav Processes 2021; 182:104294. [PMID: 33290833 PMCID: PMC7872145 DOI: 10.1016/j.beproc.2020.104294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/05/2020] [Accepted: 12/01/2020] [Indexed: 12/19/2022]
Abstract
Neural and endocrine responses provide quantitative measures that can be used for discriminating behavioral output analyses. Experimental design differences often make it difficult to compare results with respect to the mechanisms producing behavioral actions. We hypothesize that comparisons of distinctive behavioral paradigms or modification of social signals can aid in teasing apart the subtle differences in animal responses to social stress. Eyespots are a unique sympathetically activated sign stimulus of the lizard Anolis carolinensis that influence aggression and social dominance. Eyespot formation along with measurements of central and plasma monoamines enable comparison of paired male aggressive interactions with those provoked by a mirror image. The results suggest that experiments employing artificial application of sign stimuli in dyadic interactions amplify behavioral, neural and endocrine responses, and foreshorten behavioral interactions compared to those that develop among pairs naturally. While the use of mirrors to induce aggressive behavior produces simulated interactions that appear normal, some behavioral, neural, and endocrine responses are amplified in these experiments as well. In contrast, mirror image interactions also limit the level of certain behavioral and neuroendocrine responses. As true social communication does not occur during interaction with mirror images, rank relationships can never be established. Multiple experimental approaches, such as combining naturalistic social interactions with virtual exchanges and/or manipulation of sign stimuli, can often provide added depth to understanding the motivation, context, and mechanisms that produce specific behaviors. The addition of endocrine and neural measurements helps identify the contributions of specific behavioral elements to the social processes proceeding.
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Affiliation(s)
| | - Tangi R Summers
- Department of Biology, University of South Dakota, Vermillion, SD, 57069, USA; Neuroscience Group, Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD, 57069, USA; Veterans Affairs Research Service, Sioux Falls VA Health Care System, Sioux Falls, SD, 57105, USA
| | - Cliff H Summers
- Department of Biology, University of South Dakota, Vermillion, SD, 57069, USA; Neuroscience Group, Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD, 57069, USA; Veterans Affairs Research Service, Sioux Falls VA Health Care System, Sioux Falls, SD, 57105, USA.
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Yang BT, Wen B, Ji Y, Wang Q, Zhang HR, Zhang Y, Gao JZ, Chen ZZ. Comparative metabolomics analysis of pigmentary and structural coloration in discus fish (Symphysodon haraldi). J Proteomics 2020; 233:104085. [PMID: 33378721 DOI: 10.1016/j.jprot.2020.104085] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 12/15/2022]
Abstract
Discus fish have a variety of body colors including pigmentary and structural colors, studies on specific substances and related metabolic pathways associated with body coloration, however, are scarce to the present. Here, we used single-color (blue, yellow and white) of discus for comparative metabolomics analysis of pigmentary and structural coloration. Statistical model showed significant separations between three colors of discus, suggesting the distinct metabolite profiles of discus pigmentary and structural colors. More astaxanthin was found in yellow discus, which might be the cause of yellow pigmentary color. Moreover, docosahexaenoic acid, arachidonic acid, linoleic acid, eicosapentaenoic acid, 1-stearoyl-2-oleoyl-sn-glycerol 3-phosphocholine, dodecanoic acid and myristic acid related to lipid metabolism and pathways of ABC transporters and biosynthesis of unsaturated fatty acids were more enriched in yellow discus. More adenine, xanthine and hypoxanthine were enriched in blue discus, which might account for the blue structural color. Moreover, amino acids associated with purine biosynthesis, e.g., L-alanine and L-isoleucine, were reduced but pathways of protein digestion and absorption, aminoacyl-tRNA biosynthesis, purine metabolism and glycine, serine and threonine metabolism were enriched in blue discus. Overall, these results reveal specific chromophores and related metabolic pathways involved in pigmentary and structural coloration of discus fish. SIGNIFICANCE: We detected specific chromophores present in skin of pigmentary and structural colors of discus and revealed potential metabolic pathways associated with body coloration. These results contribute to our understanding of the mechanism of body color formation in discus fish.
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Affiliation(s)
- Bo-Tian Yang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Bin Wen
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
| | - Yu Ji
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Qin Wang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Hao-Ran Zhang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Yuan Zhang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Jian-Zhong Gao
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China
| | - Zai-Zhong Chen
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
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Dickerson AL, Rankin KJ, Cadena V, Endler JA, Stuart-Fox D. Rapid beard darkening predicts contest outcome, not copulation success, in bearded dragon lizards. Anim Behav 2020. [DOI: 10.1016/j.anbehav.2020.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Dollion AY, Herrel A, Marquis O, Leroux-Coyau M, Meylan S. The colour of success: does female mate choice rely on male colour change in the chameleon Furcifer pardalis? J Exp Biol 2020; 223:jeb224550. [PMID: 32843362 DOI: 10.1242/jeb.224550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 08/20/2020] [Indexed: 01/14/2023]
Abstract
Colour change is involved in various functions ranging from thermo- and hydroregulation to camouflage and communication. The role of colour change in communication has received increased attention over the past few decades, yet has been studied predominantly in the context of intrasexual competition. Here, we investigate the role of colour change in mate choice in an animal that can change its colour, the panther chameleon (Furcifer pardalis). We conducted behavioural experiments and colour analysis to investigate whether colour changes, including in the UV range, are involved in mate choice. This study presents evidence of female mate choice for specific aspects of colour change in courting males, both in the visible (i.e. human visible range: 400-700 nm) and the UV range. Females chose males exhibiting more saturation changes regardless of the body region and spectral range. In addition, females chose males showing fewer brightness changes at the level of the lateral line and males showing lower hue changes at the level of the bands and the interbands, in the visible range. At UV wavelengths, selected males showed more brightness changes and higher maximum brightness. These results suggest that male colour change is important in female mate choice in the panther chameleon.
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Affiliation(s)
- Alexis Y Dollion
- Université de Paris, 75006 Paris, France
- Sorbonne Université, CNRS, IRD, INRA, Institut d'Ecologie et des Sciences de l'Environnement-Paris, iEES-Paris, 75252 Paris, France
- Département Adaptations du vivant, UMR 7179 C.N.R.S/M.N.H.N, 75005 Paris, France
| | - Anthony Herrel
- Département Adaptations du vivant, UMR 7179 C.N.R.S/M.N.H.N, 75005 Paris, France
| | - Olivier Marquis
- Muséum national d'Histoire naturelle, Parc Zoologique de Paris, 75012 Paris, France
| | - Mathieu Leroux-Coyau
- Sorbonne Université, CNRS, IRD, INRA, Institut d'Ecologie et des Sciences de l'Environnement-Paris, iEES-Paris, 75252 Paris, France
| | - Sandrine Meylan
- Sorbonne Université, CNRS, IRD, INRA, Institut d'Ecologie et des Sciences de l'Environnement-Paris, iEES-Paris, 75252 Paris, France
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Molecular Plasticity in Animal Pigmentation: Emerging Processes Underlying Color Changes. Integr Comp Biol 2020; 60:1531-1543. [DOI: 10.1093/icb/icaa142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Synopsis
Animal coloration has been rigorously studied and has provided morphological implications for fitness with influences over social behavior, predator–prey interactions, and sexual selection. In vertebrates, its study has developed our understanding across diverse fields ranging from behavior to molecular biology. In the search for underlying molecular mechanisms, many have taken advantage of pedigree-based and genome-wide association screens to reveal the genetic architecture responsible for pattern variation that occurs in early development. However, genetic differences do not provide a full picture of the dynamic changes in coloration that are most prevalent across vertebrates at the molecular level. Changes in coloration that occur in adulthood via phenotypic plasticity rely on various social, visual, and dietary cues independent of genetic variation. Here, I will review the contributions of pigment cell biology to animal color changes and recent studies describing their molecular underpinnings and function. In this regard, conserved epigenetic processes such as DNA methylation play a role in lending plasticity to gene regulation as it relates to chromatophore function. Lastly, I will present African cichlids as emerging models for the study of pigmentation and molecular plasticity for animal color changes. I posit that these processes, in a dialog with environmental stimuli, are important regulators of variation and the selective advantages that accompany a change in coloration for vertebrate animals.
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Stuart‐Fox D, Aulsebrook A, Rankin KJ, Dong CM, McLean CA. Convergence and divergence in lizard colour polymorphisms. Biol Rev Camb Philos Soc 2020; 96:289-309. [DOI: 10.1111/brv.12656] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 01/03/2023]
Affiliation(s)
- Devi Stuart‐Fox
- School of BioSciences The University of Melbourne Royal Parade Parkville VIC 3010 Australia
| | - Anne Aulsebrook
- School of BioSciences The University of Melbourne Royal Parade Parkville VIC 3010 Australia
| | - Katrina J. Rankin
- School of BioSciences The University of Melbourne Royal Parade Parkville VIC 3010 Australia
| | - Caroline M. Dong
- School of BioSciences The University of Melbourne Royal Parade Parkville VIC 3010 Australia
- Sciences Department Museums Victoria 11 Nicholson Street Carlton Gardens VIC 3053 Australia
| | - Claire A. McLean
- School of BioSciences The University of Melbourne Royal Parade Parkville VIC 3010 Australia
- Sciences Department Museums Victoria 11 Nicholson Street Carlton Gardens VIC 3053 Australia
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Anderson AP, Rose E, Flanagan SP, Jones AG. The Estrogen-Responsive Transcriptome of Female Secondary Sexual Traits in the Gulf Pipefish. J Hered 2020; 111:294-306. [PMID: 32124926 DOI: 10.1093/jhered/esaa008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 02/24/2020] [Indexed: 01/01/2023] Open
Abstract
Sexual dimorphism often results from hormonally regulated trait differences between the sexes. In sex-role-reversed vertebrates, females often have ornaments used in mating competition that are expected to be under hormonal control. Males of the sex-role-reversed Gulf pipefish (Syngnathus scovelli) develop female-typical traits when they are exposed to estrogens. We aimed to identify genes whose expression levels changed during the development and maintenance of female-specific ornaments. We performed RNA-sequencing on skin and muscle tissue in male Gulf pipefish with and without exposure to estrogen to investigate the transcriptome of the sexually dimorphic ornament of vertical iridescent bands found in females and estrogen-exposed males. We further compared differential gene expression patterns between males and females to generate a list of genes putatively involved in the female secondary sex traits of bands and body depth. A detailed analysis of estrogen-receptor binding sites demonstrates that estrogen-regulated genes tend to have nearby cis-regulatory elements. Our results identified a number of genes that differed between the sexes and confirmed that many of these were estrogen-responsive. These estrogen-regulated genes may be involved in the arrangement of chromatophores for color patterning, as well as in the growth of muscles to achieve the greater body depth typical of females in this species. In addition, anaerobic respiration and adipose tissue could be involved in the rigors of female courtship and mating competition. Overall, this study generates a number of interesting hypotheses regarding the genetic basis of a female ornament in a sex-role-reversed pipefish.
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Affiliation(s)
| | - Emily Rose
- Department of Biology, University of Tampa, Tampa, FL
| | - Sarah P Flanagan
- School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Adam G Jones
- Department of Biological Sciences, University of Idaho, Moscow, ID
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Deconvoluting Wavelengths Leading to Fluorescent Light Induced Inflammation and Cellular Stress in Zebrafish (Danio rerio). Sci Rep 2020; 10:3321. [PMID: 32094353 PMCID: PMC7039929 DOI: 10.1038/s41598-020-59502-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 01/23/2020] [Indexed: 11/16/2022] Open
Abstract
Fluorescent light (FL) has been shown to induce a cellular immune and inflammatory response that is conserved over 450 MY of evolutionary divergence and among vertebrates having drastically different lifestyles such as Mus musculus, Danio rerio, Oryzias latipes and Xiphophorus maculatus. This surprising finding of an inflammation and immune response to FL not only holds for direct light receiving organs (skin) but is also observed within internal organs (brain and liver). Light responsive genetic circuitry initiated by the IL1B regulator induces a highly conserved acute phase response in each organ assessed for all of biological models surveyed to date; however, the specific light wavelengths triggering this response have yet to be determined so investigation of mechanisms and/or light specific molecule(s) leading to this response are difficult to assess. To understand how specific light wavelengths are received in both external and internal organs, zebrafish were exposed to specific 50 nm light wavebands spanning the visible spectrum from 300–600 nm and the genetic responses to each waveband exposure were assessed. Surprisingly, the induced cellular stress response previously observed following FL exposure is not triggered by the lower “damaging” wavelengths of light (UVB and UVA from 300–400 nm) but instead is maximally induced by higher wavelengths ranging from 450–500 nm in skin to 500–600 nm in both brain and liver).
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Ahi EP, Lecaudey LA, Ziegelbecker A, Steiner O, Glabonjat R, Goessler W, Hois V, Wagner C, Lass A, Sefc KM. Comparative transcriptomics reveals candidate carotenoid color genes in an East African cichlid fish. BMC Genomics 2020; 21:54. [PMID: 31948394 PMCID: PMC6966818 DOI: 10.1186/s12864-020-6473-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 01/09/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Carotenoids contribute significantly to animal body coloration, including the spectacular color pattern diversity among fishes. Fish, as other animals, derive carotenoids from their diet. Following uptake, transport and metabolic conversion, carotenoids allocated to body coloration are deposited in the chromatophore cells of the integument. The genes involved in these processes are largely unknown. Using RNA-Sequencing, we tested for differential gene expression between carotenoid-colored and white skin regions of a cichlid fish, Tropheus duboisi "Maswa", to identify genes associated with carotenoid-based integumentary coloration. To control for positional gene expression differences that were independent of the presence/absence of carotenoid coloration, we conducted the same analyses in a closely related population, in which both body regions are white. RESULTS A larger number of genes (n = 50) showed higher expression in the yellow compared to the white skin tissue than vice versa (n = 9). Of particular interest was the elevated expression level of bco2a in the white skin samples, as the enzyme encoded by this gene catalyzes the cleavage of carotenoids into colorless derivatives. The set of genes with higher expression levels in the yellow region included genes involved in xanthophore formation (e.g., pax7 and sox10), intracellular pigment mobilization (e.g., tubb, vim, kif5b), as well as uptake (e.g., scarb1) and storage (e.g., plin6) of carotenoids, and metabolic conversion of lipids and retinoids (e.g., dgat2, pnpla2, akr1b1, dhrs). Triglyceride concentrations were similar in the yellow and white skin regions. Extracts of integumentary carotenoids contained zeaxanthin, lutein and beta-cryptoxanthin as well as unidentified carotenoid structures. CONCLUSION Our results suggest a role of carotenoid cleavage by Bco2 in fish integumentary coloration, analogous to previous findings in birds. The elevated expression of genes in carotenoid-rich skin regions with functions in retinol and lipid metabolism supports hypotheses concerning analogies and shared mechanisms between these metabolic pathways. Overlaps in the sets of differentially expressed genes (including dgat2, bscl2, faxdc2 and retsatl) between the present study and previous, comparable studies in other fish species provide useful hints to potential carotenoid color candidate genes.
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Affiliation(s)
- Ehsan Pashay Ahi
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
- Department of Comparative Physiology, Uppsala University, Norbyvägen 18A, SE-75 236 Uppsala, Sweden
| | - Laurène A. Lecaudey
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Angelika Ziegelbecker
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
| | - Oliver Steiner
- Institute of Chemistry, University of Graz, Universitätsplatz 1, A-8010, Graz, Austria
| | - Ronald Glabonjat
- Institute of Chemistry, University of Graz, Universitätsplatz 1, A-8010, Graz, Austria
| | - Walter Goessler
- Institute of Chemistry, University of Graz, Universitätsplatz 1, A-8010, Graz, Austria
| | - Victoria Hois
- Institute of Molecular Biosciences, University of Graz, Heinrichstraße 31/II, 8010, Graz, Austria
| | - Carina Wagner
- Institute of Molecular Biosciences, University of Graz, Heinrichstraße 31/II, 8010, Graz, Austria
| | - Achim Lass
- Institute of Molecular Biosciences, University of Graz, Heinrichstraße 31/II, 8010, Graz, Austria
- BioTechMed-Graz, 8010 Graz, Austria
| | - Kristina M. Sefc
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
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Pinto KS, Pires THS, Stefanelli-Silva G, Barros BS, Borghezan EA, Zuanon J. Does soil color affect fish evolution? Differences in color change rate between lineages of the sailfin tetra. NEOTROPICAL ICHTHYOLOGY 2020. [DOI: 10.1590/1982-0224-2019-0093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
ABSTRACT Several organisms match their skin color to the prevalent background color, granting crypsis against predators. The rate at which body color changes occur varies among organisms as a result of physiological constraints and adaptation to variation in contrasts between objects and the environmental background. Faster darkening of body color is favored in environments that show higher amounts of contrast between common objects and the prevailing background. Soil types in Amazon forest streams (igarapés) create distinct environments with respect to the amount of contrast, a result of the amount of sand and clay, which offers different contrasts against dead leaves. Here, we investigated differences in the rates of color change among populations of the sailfin tetra (Crenuchus spilurus) that represent lineages that live in regions of different soil types. Populations inserted into blackwaters (sandy soil) showed higher rates of color darkening in response to exposure to a dark environment composed by dead leaves. We propose that natural selection stemming from predation can favor faster color change rate in environments where there is higher variability of contrasts between leaf litter and soil, which is common in most blackwater streams.
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46
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Hudson SB, Robertson MW, Wilcoxen TE. Fecal Glucocorticoid Response to Periodic Social Stress in Male Green Anoles, Anolis carolinensis. COPEIA 2019. [DOI: 10.1643/cp-19-192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Spencer B. Hudson
- Department of Biology, Utah State University, 5305 Old Main Hill, Logan, Utah 84322; . Send reprint requests to this address
| | - Marianne W. Robertson
- Department of Biology, Millikin University, 1184 W Main Street, Decatur, Illinois 62522; (MWR) ; and (TEW)
| | - Travis E. Wilcoxen
- Department of Biology, Millikin University, 1184 W Main Street, Decatur, Illinois 62522; (MWR) ; and (TEW)
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Sanchez E, Pröhl H, Lüddecke T, Schulz S, Steinfartz S, Vences M. The conspicuous postmetamorphic coloration of fire salamanders, but not their toxicity, is affected by larval background albedo. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2019; 332:26-35. [DOI: 10.1002/jez.b.22845] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 01/14/2019] [Accepted: 01/17/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Eugenia Sanchez
- Department of Life Sciences, Zoological Institute, Technische Universität BraunschweigBraunschweig Germany
| | - Heike Pröhl
- The University of Veterinary Medicine Hannover Foundation does not have departments, only clinics, institutes and special units, Institute of Zoology, Tierärztliche Hochschule HannoverHannover Germany
| | - Tim Lüddecke
- Department of Life Sciences, Zoological Institute, Technische Universität BraunschweigBraunschweig Germany
- LOEWE Centre for Translational Biodiversity Genomics, Animal Venomics Research Group, Fraunhofer Institute for Molecular Biology and Applied EcologyGießen Germany
| | - Stefan Schulz
- Department of Life Sciences, Institute of Organic Chemistry, Technische Universität BraunschweigBraunschweig Germany
| | - Sebastian Steinfartz
- Department of Life Sciences, Zoological Institute, Technische Universität BraunschweigBraunschweig Germany
| | - Miguel Vences
- Department of Life Sciences, Zoological Institute, Technische Universität BraunschweigBraunschweig Germany
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Johnson AM, Chang CH, Fuller RC. Testing the potential mechanisms for the maintenance of a genetic color polymorphism in bluefin killifish populations. Curr Zool 2018; 64:733-743. [PMID: 30538733 PMCID: PMC6280095 DOI: 10.1093/cz/zoy017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 02/28/2018] [Indexed: 02/03/2023] Open
Abstract
The maintenance of genetic variation in the face of natural selection is a long-standing question in evolutionary biology. In the bluefin killifish Lucania goodei, male coloration is polymorphic. Males can produce either red or yellow coloration in their anal fins, and both color morphs are present in all springs. These 2 morphs are heritable and how they are maintained in nature is unknown. Here, we tested 2 mechanisms for the maintenance of the red/yellow color morphs. Negative frequency-dependent mating success predicts that rare males have a mating advantage over common males. Spatial variation in fitness predicts that different color morphs have an advantage in different microhabitat types. Using a breeding experiment, we tested these hypotheses by creating populations with different ratios of red to yellow males (5 red:1 yellow; 1 red:5 yellow) and determining male mating success on shallow and deep spawning substrates. We found no evidence of negative frequency-dependent mating success. Common morphs tended to have higher mating success, and this was particularly so on shallow spawning substrates. However, on deep substrates, red males enjoyed higher mating success than yellow males, particularly so when red males were rare. However, yellow males did not have an advantage at either depth nor when rare. We suggest that preference for red males is expressed in deeper water, possibly due to alterations in the lighting environment. Finally, male pigment levels were correlated with one another and predicted male mating success. Hence, pigmentation plays an important role in male mating success.
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Affiliation(s)
- Ashley M Johnson
- Department of Animal Biology, School of Integrative Biology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Chia-Hao Chang
- Department of Animal Biology, School of Integrative Biology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Rebecca C Fuller
- Department of Animal Biology, School of Integrative Biology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
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Duarte RC, Stevens M, Flores AAV. The adaptive value of camouflage and colour change in a polymorphic prawn. Sci Rep 2018; 8:16028. [PMID: 30375480 PMCID: PMC6207773 DOI: 10.1038/s41598-018-34470-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 10/17/2018] [Indexed: 11/11/2022] Open
Abstract
Camouflage has been a textbook example of natural selection and adaptation since the time of the earliest evolutionists. However, aside from correlational evidence and studies using artificial dummy prey, experiments directly showing that better camouflaged prey to predator vision are at reduced risk of attack are lacking. Here, we show that the level of camouflage achieved through colour adjustments towards the appearance of seaweed habitats is adaptive in reducing predation pressure in the prawn Hippolyte obliquimanus. Digital image analysis and visual modelling of a fish predator (seahorse) predicted that brown prawns would be imperfectly concealed against both brown and red seaweed respectively, whereas pink prawns should be well camouflaged only in red weed. Predation trials with captive seahorses (Hippocampus reidi), coupled with high-speed video analyses, closely matched model predictions: predation rates were similar for brown prawns between seaweed types, but pink individuals were attacked significantly less on red than brown weed. Our work provides some of the clearest direct evidence to date that colour polymorphism and colour change provides a clear adaptive advantage for camouflage, and also highlights how this can be asymmetric across morphs and habitats (i.e. dependent on the specific background-morph combination).
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Affiliation(s)
- Rafael Campos Duarte
- Centro de Biologia Marinha, Universidade de São Paulo, Rod. Manoel Hypólito do Rego, km 131.5, São Sebastião, SP, 11612-109, Brazil.
- Programa de Pós-Graduação em Biologia Comparada, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.
| | - Martin Stevens
- Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Penryn, TR10 9FE, UK
| | - Augusto Alberto Valero Flores
- Centro de Biologia Marinha, Universidade de São Paulo, Rod. Manoel Hypólito do Rego, km 131.5, São Sebastião, SP, 11612-109, Brazil
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