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Wu L, Sun W, Zhou J, Li Y, Li J, Song Z, Song C, Xu S, Yue X, Li X. Comparative transcriptome analysis reveals growth and molecular pathway of body color regulation in turbot (Scophthalmus maximus) exposed to different light spectrum. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 49:101165. [PMID: 38007980 DOI: 10.1016/j.cbd.2023.101165] [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: 08/16/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 11/28/2023]
Abstract
Fish body color changes play vital roles in adapting to ecological light environment and influencing market value. However, the initial mechanisms governing the changes remain unknown. Here, we scrutinized the impact of light spectrum on turbot (Scophthalmus maximus) body coloration, exposing them to red, blue, and full light spectra from embryo to 90 days post hatch. Transcriptome and quantitative real-time PCR (qRT-PCR) analyses were employed to elucidate underlying biological processes. The results showed that red light induced dimorphism in turbot juvenile skin pigmentation: some exhibited black coloration (Red_Black_Surface, R_B_S), while others displayed lighter skin (Red_White_Bottom, R_W_B), with red light leading to reduced skin lightness (L*) and body weight, particularly in R_B_S group. Transcriptomic and qRT-PCR analyses showcased upregulated gene expressions related to melanin synthesis in R_B_S individuals, notably tyrosinase (tyr), tyrosinase-related protein 1 (tyrp1), and dopachrome tautomerase (dct), alongside solute carrier family 24 member 5 (slc24a5) and oculocutaneous albinism type II (oca2) as pivotal regulators. Nervous system emerged as a critical mediator in spectral environment-driven color regulation. N-methyl d-aspartate (NMDA) glutamate receptor, and calcium signaling pathway emerged as pivotal links intertwining spectral conditions, neural signal transduction, and color regulation. The individual differences in NMDA glutamate receptor expression and subsequent neural excitability seemed responsible for dichromatic body coloration in red light-expose juveniles. This study provides new insights into the comprehending of fish adaptation to environment and methods for fish body color regulation and could potentially help enhance the economic benefit of fish farming industry.
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Affiliation(s)
- Lele Wu
- Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266001, PR China
| | - Wen Sun
- Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266001, PR China
| | - Jiale Zhou
- Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266001, PR China
| | - Yaolin Li
- Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266001, PR China
| | - Jun Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Zongcheng Song
- Weihai Shenghang Aquatic Product Science and Technology Co. Ltd, Weihai 264200, PR China
| | - Changbin Song
- Institute of Semiconductors, Chinese Academy of Science, Beijing 100083, PR China
| | - Shihong Xu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Xinlu Yue
- Weihai Shenghang Aquatic Product Science and Technology Co. Ltd, Weihai 264200, PR China
| | - Xian Li
- Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266001, PR China.
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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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Madkour FA, Abdellatif AM, Osman YA, Kandyel RM. Histological and ultrastructural characterization of the dorso-ventral skin of the juvenile and the adult starry puffer fish (Arothron stellatus, Anonymous 1798). BMC Vet Res 2023; 19:221. [PMID: 37875870 PMCID: PMC10598996 DOI: 10.1186/s12917-023-03784-0] [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: 02/07/2023] [Accepted: 10/10/2023] [Indexed: 10/26/2023] Open
Abstract
BACKGROUND The starry puffer fish (Arothron stellatus, Anonymous, 1798) is a poisonous tetradontidae fish inhabiting the Red sea. The skin constitutes an important defense against any external effects. The study aims to characterize the dorso-ventral skin of the juvenile and the adult starry puffer fish using light and scanning electron microscopies. Twenty specimens of juvenile and adult fresh fishes were used. RESULTS The scanning electron microarchitecture of the skin of the juvenile and adult fish showed delicate irregular-shaped protrusions, and well-defined bricks-like elevations on the dorsal side and interrupted folds as well as irregular-shaped protrusions on the ventral side. In adult fish, the patterned microridges of the superficial and deep epithelial cells (keratinocytes) were larger and well-defined in the dorsal skin than in the ventral side, the contrary was seen in the juvenile fish. The microridges were arranged in a fingerprint or honeycomb patterns. The openings of the mucous cells were more numerous in the dorsal skin in both age stages but more noticeable in adult. Furthermore, the sensory cells were more dominant in the juveniles than the adults. The odontic spines were only seen in adult. Histologically, few taste buds were observed in the epidermis of the dorsal skin surface of the adult fish. Both mucous and club cells were embedded in the epidermis of the juvenile and adult fish with different shapes and sizes. Melanophores were observed at the dorsal skin of both juvenile and adult fishes while fewer numbers were noticed at the ventral surfaces. Several dermal bony plates with different shapes and sizes were demonstrated in the skin of both adult and juvenile fishes. CONCLUSION The structural variations of skin of the juvenile and adult fishes may reflect the various environmental difficulties that they confront.
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Affiliation(s)
- Fatma A Madkour
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt.
| | - Ahmed M Abdellatif
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Yassein A Osman
- Department of Fisheries, Fish Population Dynamic Lab, National Institute of Oceanography and Fisheries, Hurghada, Red Sea, Egypt
| | - Ramadan M Kandyel
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
- Department of Biology, Faculty of Arts and Sciences, Najran University, Najran, Saudi Arabia
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Antuofermo E, Orioles M, Murgia C, Burrai GP, Penati M, Gottardi C, Polinas M, Volpatti D, Galeotti M, Addis MF. Exploring Immunohistochemistry in Fish: Assessment of Antibody Reactivity by Western Immunoblotting. Animals (Basel) 2023; 13:2934. [PMID: 37760333 PMCID: PMC10525475 DOI: 10.3390/ani13182934] [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: 08/04/2023] [Revised: 09/04/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
In recent years, research on fish has seen remarkable advancements, especially in aquaculture, ornamental fish industry, and biomedical studies. Immunohistochemistry has become crucial in fish research, aiding in physiological and pathological investigations. However, the use of antibodies originally developed for mammals has raised concerns about their cross-reactivity and specificity in fish. This study systematically evaluated the reactivity of commonly used antibodies for diagnostic purposes, especially in fish pathology, including pan-cytokeratin, vimentin, S-100, glial fibrillary acidic protein, and desmin in the tissue of Sparus aurata, Dicentrarchus labrax, Oncorhynchus mykiss, and Carassius auratus. Western immunoblotting was employed to assess antibody specificity. The results revealed that the pan-cytokeratin and glial fibrillary acidic protein antibodies cross-react with all tested fish species, while S-100 demonstrated specific staining in sea bream, goldfish, and rainbow trout tissues. Conversely, vimentin and desmin antibodies displayed no reactivity. In conclusion, the anti-cytokeratin clone AE1/AE3 and the polyclonal rabbit anti-glial fibrillary acidic protein antibody, which are extensively used in mammals, were validated for fish immunohistochemical studies. Regrettably, D33 anti-desmin and V9 anti-vimentin clones are unsuitable for immunohistochemistry in the tested fish. These findings underscore the need for species-specific antibodies and proper validation for accurate immunohistochemistry analyses in fish research.
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Affiliation(s)
- Elisabetta Antuofermo
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (E.A.); (C.M.); (M.P.)
| | - Massimo Orioles
- Veterinary Pathology Unit, Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, 33100 Udine, Italy; (M.O.); (D.V.); (M.G.)
| | - Claudio Murgia
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (E.A.); (C.M.); (M.P.)
| | - Giovanni P. Burrai
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (E.A.); (C.M.); (M.P.)
| | - Martina Penati
- Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (M.P.); (C.G.); (M.F.A.)
| | - Chiara Gottardi
- Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (M.P.); (C.G.); (M.F.A.)
| | - Marta Polinas
- Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy; (E.A.); (C.M.); (M.P.)
| | - Donatella Volpatti
- Veterinary Pathology Unit, Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, 33100 Udine, Italy; (M.O.); (D.V.); (M.G.)
| | - Marco Galeotti
- Veterinary Pathology Unit, Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, 33100 Udine, Italy; (M.O.); (D.V.); (M.G.)
| | - Maria Filippa Addis
- Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (M.P.); (C.G.); (M.F.A.)
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Alesci A, Pergolizzi S, Mokhtar DM, Fumia A, Aragona M, Lombardo GP, Messina E, D'Angelo R, Lo Cascio P, Sayed RKA, Albano M, Capillo G, Lauriano ER. Morpho-structural adaptations of the integument in different aquatic organisms. Acta Histochem 2023; 125:152031. [PMID: 37075648 DOI: 10.1016/j.acthis.2023.152031] [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: 02/28/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 04/21/2023]
Abstract
The integument acts as a barrier to protect the body from harmful pathogenic infectious agents, parasites, UV rays, trauma, and germs. The integument of invertebrates and vertebrates are structurally different: while invertebrates usually have a simple monolayer epidermis frequently covered by mucus, cuticles, or mineralized structures, vertebrates possess a multilayered epidermis with several specialized cells. This study aims to describe by morphological, histological, and immunohistochemical analyses, the morpho-structural adaptations throughout evolution of the integument of gastropod Aplysia depilans (Gmelin, 1791), ascidian Styela plicata (Lesuer, 1823), myxine hagfish Eptatretus cirrhatus (Forster, 1801) and teleost Heteropneustes fossilis (Bloch, 1794) for the first time, with special reference to sensory epidermal cells. Different types of cells could be identified that varied according to the species; including mucous cells, serous glandular cells, clavate cells, club cells, thread cells, and support cells. In all integuments of the specimens analyzed, sensory solitary cells were identified in the epidermis, immunoreactive to serotonin and calbindin. Our study provided an essential comparison of integuments, adding new information about sensory epidermal cells phylogenetic conservation and on the structural changes that invertebrates and vertebrates have undergone during evolution.
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Affiliation(s)
- Alessio Alesci
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Simona Pergolizzi
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Doaa M Mokhtar
- Department of Anatomy and Histology, Faculty of Veterinary Medicine, Assiut University, Assiut 71526, Egypt
| | - Angelo Fumia
- Department of Clinical and Experimental Medicine, University of Messina, Padiglione C, A. O. U. Policlinico "G. Martino", 98124 Messina, Italy.
| | - Marialuisa Aragona
- Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy
| | - Giorgia Pia Lombardo
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Emmanuele Messina
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Roberta D'Angelo
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Patrizia Lo Cascio
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, 98166 Messina, Italy
| | - Ramy K A Sayed
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Sohag University, Sohag 82524, Egypt
| | - Marco Albano
- Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy
| | - Gioele Capillo
- Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; Institute for Marine Biological Resources and Biotechnology (IRBIM), National Research Council (CNR), Section of Messina, 98100 Messina, Italy
| | - Eugenia Rita Lauriano
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, 98166 Messina, Italy
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Šálková E, Schmidt-Posthaus H, Lutz I, Kocour Kroupová H, Steinbach C. Immunohistochemical investigation of epithelial, mesenchymal, neuroectodermal, immune and endocrine markers in sterlet (Acipenser ruthenus), shortnose sturgeon (Acipenser brevirostrum) and common carp (Cyprinus carpio). FISH PHYSIOLOGY AND BIOCHEMISTRY 2022; 48:1737-1749. [PMID: 36478317 DOI: 10.1007/s10695-022-01145-6] [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: 03/18/2022] [Accepted: 11/16/2022] [Indexed: 06/17/2023]
Abstract
Immunohistochemistry (IHC) is a laboratory method widely used to characterize tissue and cell origin, both in human and veterinary medicine. In fish, however, little is known about staining characteristics of most tissue types, and especially for less studied chondrostean fish. The aim of this study was to examine the specificity of various immunohistochemical markers in tissues of chondrostean and teleostean fish and to validate diagnostic tests. Sterlet (Acipenser ruthenus L.), shortnose sturgeon (Acipenser brevirostrum) and common carp (Cyprinus carpio L.) were examined. Markers were chosen as representatives of epithelial (cytokeratin AE1/AE3), mesenchymal (vimentin), neuroectodermal (S-100 protein), lymphoid (leukocyte common antigen, LCA) and endocrine (thyroglobulin, thyroxin) tissues and organs. Applied antibodies were of monoclonal or polyclonal mammalian origin and primarily intended for human medicine research or diagnostic application. No species differences were obvious while examining sterlet, shortnose sturgeon and carp. Cytokeratin AE1/AE3, vimentin, S-100 protein and thyroxin were positive on targeted tissues and structures. Leukocyte common antigen (LCA) and thyroglobulin were negative on targeted structures, however, and with clear cross-reactivity on non-targeted tissues (vascular wall, granulocytes). Conclusive results were obtained when using polyclonal antibodies with dilution adjusted to laboratory practice, while application of ready-to-use (RTU) kits with pre-diluted antibodies or monoclonal antibodies often showed conflicting or inconclusive results.
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Affiliation(s)
- Eva Šálková
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
| | - Heike Schmidt-Posthaus
- Centre for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland
| | - Ilka Lutz
- Department of Ecophysiology and Aquaculture, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301, 12587, Berlin, Germany
| | - Hana Kocour Kroupová
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic
| | - Christoph Steinbach
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
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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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8
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Landeira-Dabarca A, Abreu CSR, Álvarez M, Molist P. Changes in marine turbot (Scophthalmus maximus) epidermis and skin mucus composition during development from bilateral larvae to juvenile flat fish. JOURNAL OF FISH BIOLOGY 2021; 99:2018-2029. [PMID: 34520580 DOI: 10.1111/jfb.14910] [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: 03/28/2021] [Revised: 07/12/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
Alike other flat fish, marine turbot has the particularity that changes from larvae with bilateral symmetry to adult with asymmetry, in terms of the position of the eyes. As expected, the skin configuration of this species is also affected by the development and transformation suffered by fish during metamorphosis. In this context, changes in the epidermis of marine turbot were studied using conventional staining and histochemical techniques using six lectins (UEA-I, PNA, RCA-I, WGA, Con A and SBA). During development from larvae to juvenile (3-300 days post-hatching), the epidermis increased in both thickness and the number of cell layers. In fact, the simple cuboidal epithelium observed in larvae at day 3 already became stratified at days 10-12, which sequentially increase in thickness with fish development. Turbot epidermis is composed basically of four cell types: epithelial and mucous or secretory cells that are present through the development, and pigmented cells and a type that the authors described as club-like cells that appear during and post-metamorphosis. The Alcian blue-periodic acid Schiff (AB-PAS) histochemical method revealed the presence of neutral glycoconjugates in mucous and club-like cells at post-metamorphic stages of fish. Accordingly, lectin analysis showed mucous cells containing glycoproteins rich in fucose (UEA-I labelling) and glycoconjugates rich in the sequence galactose-N-acetyl galactosamine (PNA and RCA-I labelling) when this cell type appears. Interestingly, melanophores were observed in the dorsal epidermis of post-metamorphic juveniles. This type of cell contains a black-to-brown pigment that provides the skin the typical colour of this fish species. Changes in mucous coat composition were observed during fish development, which was attributed to different roles of the glycoconjugates.
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Affiliation(s)
- Andrea Landeira-Dabarca
- Departamento de Ecoloxía e Bioloxía Animal, Facultad de Bioloxía, Universidade de Vigo, Vigo, España
| | - Cristina S R Abreu
- Universidade de Vigo, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Vigo, España
| | - Maruxa Álvarez
- Departamento de Ecoloxía e Bioloxía Animal, Facultad de Bioloxía, Universidade de Vigo, Vigo, España
| | - Pilar Molist
- Universidade de Vigo, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Vigo, España
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INFLUENCE OF PATHOGENS, FISH-RELATED CHARACTERISTICS, AND ENVIRONMENTAL FACTORS ON THE DEVELOPMENT OF SKIN ULCERATIONS IN WILD COMMON DAB (LIMANDA LIMANDA) FROM THE NORTH SEA. J Wildl Dis 2021; 57:292-302. [PMID: 33822161 DOI: 10.7589/jwd-d-20-00088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 10/13/2020] [Indexed: 11/20/2022]
Abstract
Environmental changes or stressors can result in the development of diseases. Through regular fish disease surveys in the Belgian part of the North Sea, attention was drawn to a sudden increase of skin ulceration prevalence between 2011 and 2014 in common dab (Limanda limanda). Information on prevalence, ulceration, bacteriology, fish-related (e.g., length, age, and sex) and (spatial and temporal) environmental factors, and fishing intensity were gathered. This detailed investigation was framed within a long-term monitoring program, executed every spring-autumn from 2000 to present. Ulcerations were observed in 1.3% of fish (n=3,999). Spatial and temporal differences were evident, and highest prevalence was found in summer. Vibrio was the dominant cultivated bacterial genus present in the lesions. Skin ulcerations appeared to be correlated with length and body condition of the fish, as well as with temperature and pH of the seawater and fishing vessel density. Our research suggested the involvement of multiple factors in the development of skin ulcerations in common dab and endorsed the effects of changing environment and human influence on the marine ecosystem through activities such as fishing.
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Plasma Treatment of Fish Cells: The Importance of Defining Cell Culture Conditions in Comparative Studies. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11062534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The present study provides the fundamental results for the treatment of marine organisms with cold atmospheric pressure plasma. In farmed fish, skin lesions may occur as a result of intensive fish farming. Cold atmospheric plasma offers promising medical potential in wound healing processes. Since the underlying plasma-mediated mechanisms at the physical and cellular level are yet to be fully understood, we investigated the sensitivity of three fish cell lines to plasma treatment in comparison with mammalian cells. We varied (I) cell density, (II) culture medium, and (III) pyruvate concentration in the medium as experimental parameters. Depending on the experimental setup, the plasma treatment affected the viability of the different cell lines to varying degrees. We conclude that it is mandatory to use similar cell densities and an identical medium, or at least a medium with identical antioxidant capacity, when studying plasma effects on different cell lines. Altogether, fish cells showed a higher sensitivity towards plasma treatment than mammalian cells in most of our setups. These results should increase the understanding of the future treatment of fish.
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Ye X, Zhou L, Jia J, Wei L, Wen Y, Yan X, Huang J, Gan B, Liu K, Lv Y, Hu G. ITRAQ Proteomic Analysis of Yellow and Black Skin in Jinbian Carp ( Cyprinus carpio). Life (Basel) 2020; 10:E226. [PMID: 33007994 PMCID: PMC7601221 DOI: 10.3390/life10100226] [Citation(s) in RCA: 2] [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: 07/28/2020] [Revised: 09/12/2020] [Accepted: 09/24/2020] [Indexed: 01/01/2023] Open
Abstract
Colors are important phenotypic traits for fitness under natural conditions in vertebrates. Previous studies have reported several functional genes and genetic variations of pigmentation, but the formation mechanisms of various skin coloration remained ambiguous in fish. Jinbian carp, a common carp variant, displays two colors (yellow and black) in the skin, thus, it is a good model for investigating the genetic basis of pigmentation. In the present study, using the Jinbian carp as model, isobaric tags for relative and absolute quantification (ITRAQ) proteomics analysis was performed for yellow and black skin, respectively. The results showed that 467 differentially expressed proteins (DEPs) were identified between the yellow skin and the black skin. Similar to mammals, the up-regulated DEPs in black skin included UV excision repair protein RAD23 homolog A (Rad23a), melanoregulin (mreg), 5,6-dihydroxyindole-2-carboxylic acid oxidase5 (tyrp1) and melanocyte protein PMEL (PMEL), which were mainly grouped into melanogenesis pathway. However, several up-regulated DEPs in yellow skin were mainly enriched in nucleotide metabolism, such as GTPase IMAP family member 5 (GIMAP5), AMP deaminase 1 (AMPD1), adenosylhomocysteinase b (ahcy-b), and pyruvate kinase (PKM). In summary, several candidate proteins and their enrichment pathways for color variation in Jinbian carp were identified, which may be responsible for the formation of different colorations.
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Affiliation(s)
- Xiangchen Ye
- Aquatic Species Introduction and Breeding Center of Guangxi, Nanning 530031, China; (X.Y.); (L.W.); (X.Y.); (B.G.); (K.L.)
| | - Lingling Zhou
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (L.Z.); (J.J.)
| | - Jingyi Jia
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (L.Z.); (J.J.)
| | - Lingjing Wei
- Aquatic Species Introduction and Breeding Center of Guangxi, Nanning 530031, China; (X.Y.); (L.W.); (X.Y.); (B.G.); (K.L.)
| | - Yanhong Wen
- Extension Station of Fisheries Technology of Liuzhou, Liuzhou 545006, China; (Y.W.); (J.H.)
| | - Xueyu Yan
- Aquatic Species Introduction and Breeding Center of Guangxi, Nanning 530031, China; (X.Y.); (L.W.); (X.Y.); (B.G.); (K.L.)
| | - Jie Huang
- Extension Station of Fisheries Technology of Liuzhou, Liuzhou 545006, China; (Y.W.); (J.H.)
| | - Baojiang Gan
- Aquatic Species Introduction and Breeding Center of Guangxi, Nanning 530031, China; (X.Y.); (L.W.); (X.Y.); (B.G.); (K.L.)
| | - Kang Liu
- Aquatic Species Introduction and Breeding Center of Guangxi, Nanning 530031, China; (X.Y.); (L.W.); (X.Y.); (B.G.); (K.L.)
| | - Yejian Lv
- Aquatic Species Introduction and Breeding Center of Guangxi, Nanning 530031, China; (X.Y.); (L.W.); (X.Y.); (B.G.); (K.L.)
| | - Guangfu Hu
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (L.Z.); (J.J.)
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Ultra-black Camouflage in Deep-Sea Fishes. Curr Biol 2020; 30:3470-3476.e3. [PMID: 32679102 DOI: 10.1016/j.cub.2020.06.044] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/25/2020] [Accepted: 06/12/2020] [Indexed: 12/27/2022]
Abstract
At oceanic depths >200 m, there is little ambient sunlight, but bioluminescent organisms provide another light source that can reveal animals to visual predators and prey [1-4]. Transparency and mirrored surfaces-common camouflage strategies under the diffuse solar illumination of shallower waters-are conspicuous when illuminated by directed bioluminescent sources due to reflection from the body surface [5, 6]. Pigmentation allows animals to absorb light from bioluminescent sources, rendering them visually undetectable against the dark background of the deep sea [5]. We present evidence suggesting pressure to reduce reflected bioluminescence led to the evolution of ultra-black skin (reflectance <0.5%) in 16 species of deep-sea fishes across seven distantly related orders. Histological data suggest this low reflectance is mediated by a continuous layer of densely packed melanosomes in the exterior-most layer of the dermis [7, 8] and that this layer lacks the unpigmented gaps between pigment cells found in other darkly colored fishes [9-13]. Using finite-difference, time-domain modeling and comparisons with melanosomes found in other ectothermic vertebrates [11, 13-21], we find the melanosomes making up the layer in these ultra-black species are optimized in size and shape to minimize reflectance. Low reflectance results from melanosomes scattering light within the layer, increasing the optical path length and therefore light absorption by the melanin. By reducing reflectance, ultra-black fish can reduce the sighting distance of visual predators more than 6-fold compared to fish with 2% reflectance. This biological example of efficient light absorption via a simple architecture of strongly absorbing and highly scattering particles may inspire new ultra-black materials.
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Vercauteren M, De Swaef E, Declercq AM, Aerts J, Ampe B, Gulla S, Haesebrouck F, Devriese L, Decostere A, Chiers K. Pinpointing the role of Aeromonas salmonicida in the development of skin ulcerations in common dab (Limanda limanda). JOURNAL OF FISH DISEASES 2020; 43:347-357. [PMID: 31918449 DOI: 10.1111/jfd.13133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
Aeromonas salmonicida was isolated from ulcerations in common dab (Limanda limanda). An experiment was performed to pinpoint its role in ulceration development, considering the importance of the skin barrier and the pigmented and non-pigmented sides. The skin of dab was treated in three zones, one where scales and epidermis were removed, one where mucus was discarded and one non-treated zone. Fish were tagged to allow individual identification and challenged with A. salmonicida. Mortality and severity of the developing lesions were recorded for 21 days post-inoculation. Starting 12 days post-inoculation, mortality occurred gradually in challenged fish; however, no direct cause could be established. Both control fish and challenged fish developed ulcerations containing A. salmonicida. Sequencing of vapA gene revealed that isolates retrieved from both groups were distinct, suggesting the presence of A. salmonicida prior to the trial. Most ulcerations developed in zones where skin was removed, suggesting that abrasion might be a predisposing factor in ulceration development. Ulcerations were also observed at the insertion site of the tag, where exposed muscle tissue might have favoured the development of ulcerations. In conclusion, A. salmonicida seems to be involved in the development of skin ulcerations in dab, although the exact pathogenesis needs to be elucidated.
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Affiliation(s)
- Maaike Vercauteren
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Evelien De Swaef
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Annelies Maria Declercq
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Johan Aerts
- Stress Physiology Research Group, Ghent University and Flanders Research Institute for Agricultural and Fisheries and Food (ILVO), Green Bridge Science Park, Ostend, Belgium
| | - Bart Ampe
- Animal Husbandry, Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Melle, Belgium
| | - Snorre Gulla
- Fish Health Research Group, Norwegian Veterinary Institute, Oslo, Norway
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Lisa Devriese
- Flanders Marine Institute (VLIZ), InnovOcean site, Ostend, Belgium
- Research Institute for Agriculture, Fisheries and Food (ILVO), Ostend, Belgium
| | - Annemie Decostere
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Koen Chiers
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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Bian F, Yang X, Ou Z, Luo J, Tan B, Yuan M, Chen T, Yang R. Morphological Characteristics and Comparative Transcriptome Analysis of Three Different Phenotypes of Pristella maxillaris. Front Genet 2019; 10:698. [PMID: 31428133 PMCID: PMC6687772 DOI: 10.3389/fgene.2019.00698] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 07/03/2019] [Indexed: 01/09/2023] Open
Abstract
Pristella maxillaris is known as the X-ray fish based on its translucent body. However, the morphological characteristics and the molecular regulatory mechanisms of these translucent bodies are still unknown. In this study, the following three phenotypes, a black-and-gray body color or wild-type (WT), a silvery-white body color defined as mutant I (MU1), and a fully transparent body with a visible visceral mass named as mutant II (MU2), were investigated to analyze their chromatophores and molecular mechanisms. The variety and distribution of pigment cells in the three phenotypes of P. maxillaris significantly differed by histological assessment. Three types of chromatophores (melanophores, iridophores, and xanthophores) were observed in the WT, whereas MU1 fish were deficient in melanophores, and MU2 fish lacked melanophores and iridophores. Transcriptome sequencing of the skin and peritoneal tissues of P. maxillaris identified a total of 166,089 unigenes. After comparing intergroup gene expression levels, more than 3,000 unigenes with significantly differential expression levels were identified among three strains. Functional annotation and Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses of the differentially expressed genes (DEGs) identified a number of candidates melanophores and iridophores genes that influence body color. Some DEGs that were identified using transcriptome analysis were confirmed by quantitative real-time PCR. This study serves as a global survey of the morphological characteristics and molecular mechanism of different body colors observed in P. maxillaris and thus provides a valuable theoretical foundation for the molecular regulation of the transparent phenotype.
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Affiliation(s)
- Fangfang Bian
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Xuefen Yang
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Zhijie Ou
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China.,Department of Fisheries, Guangdong Maoming Agriculture & Forestry Technical College, Maoming, China
| | - Junzhi Luo
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Bozhen Tan
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Mingrui Yuan
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Tiansheng Chen
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China.,Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Changde, China
| | - Ruibin Yang
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan, China
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Vercauteren M, De Swaef E, Declercq AM, Polet H, Aerts J, Ampe B, Romalde JL, Haesebrouck F, Devriese L, Decostere A, Chiers K. Scrutinizing the triad of Vibrio tapetis, the skin barrier and pigmentation as determining factors in the development of skin ulcerations in wild common dab (Limanda limanda). Vet Res 2019; 50:41. [PMID: 31159877 PMCID: PMC6547549 DOI: 10.1186/s13567-019-0659-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/21/2019] [Indexed: 11/10/2022] Open
Abstract
Recently, Vibrio tapetis was isolated for the first time from skin ulcerations in wild-caught common dab (Limanda limanda). To further examine its role in the development of these skin lesions, an in vivo experiment was performed. The significance of the skin barrier and in addition the difference between pigmented and non-pigmented side were investigated. Hence, the skin of common dab was treated in three different ways on both the pigmented and non-pigmented side. On a first “treatment zone”, the scales and overlying epidermal tissue were removed whereas in a second zone only the mucus was discarded. The third zone served as a non-treated zone. Thereafter, fish were challenged with V. tapetis. The control group was sham treated. Mortality, clinical signs, severity and size of the developing lesions were recorded. All animals were sacrificed and sampled 21 days post-inoculation. Significantly more fish of the group challenged with V. tapetis died compared to the control group with the highest incidence occurring 4 days post-inoculation. Fish challenged with V. tapetis developed more severe skin ulcerations. In zones where scales and epidermal tissue were removed, the ulcerations were more severe compared to zones where only mucus was eliminated. Ulcerations occurred more frequently, were more severe and larger on the pigmented side. Our data represents prove of V. tapetis as causative agent of ulcerative skin lesions although prior damage of the skin seems to be a major contributing factor. Furthermore, the pigmented side seemed predisposed to the development of skin ulcerations.
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Affiliation(s)
- Maaike Vercauteren
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.
| | - Evelien De Swaef
- Department of Morphology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Annelies M Declercq
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.,Research Division, Flanders Marine Institute (VLIZ), InnovOcean Site, Wandelaarkaai 7, 8400, Ostend, Belgium
| | - Hans Polet
- Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Sciences Unit-Aquatic Environment and Quality, Ankerstraat 1, 8400, Ostend, Belgium
| | - Johan Aerts
- Stress Physiology Research Group, Faculty of Sciences of Ghent University and Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Sciences Unit, Green Bridge Science Park, 8400, Ostend, Belgium
| | - Bart Ampe
- Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Husbandry, Scheldeweg 68, 9090, Melle, Belgium
| | - Jesus L Romalde
- Department of Microbiology and Parasitology, CIBUS-Faculty of Biology, Universidade de Santiago de Compostela, Campus Vida s/n, 15782, Santiago de Compostela, Spain
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Lisa Devriese
- Research Division, Flanders Marine Institute (VLIZ), InnovOcean Site, Wandelaarkaai 7, 8400, Ostend, Belgium
| | - Annemie Decostere
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Koen Chiers
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
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16
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Togawa M, Endo Y, Suzuki N, Yokoi H, Suzuki T. Identification of Sox10‐positive cells at the dorsal fin base of juvenile flounder that are correlated with blind‐side skin ectopic pigmentation. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2019; 330:427-437. [DOI: 10.1002/jez.b.22842] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 10/27/2018] [Accepted: 12/04/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Mai Togawa
- Laboratory of Marine Life Science and GeneticsGraduate School of Agricultural Science, Tohoku UniversitySendai Japan
| | - Yuna Endo
- Laboratory of Marine Life Science and GeneticsGraduate School of Agricultural Science, Tohoku UniversitySendai Japan
| | - Nobuo Suzuki
- Noto Marine LaboratoryInstitute of Nature and Environmental Technology, Kanazawa UniversityNoto‐cho Ishikawa Japan
| | - Hayato Yokoi
- Laboratory of Marine Life Science and GeneticsGraduate School of Agricultural Science, Tohoku UniversitySendai Japan
| | - Tohru Suzuki
- Laboratory of Marine Life Science and GeneticsGraduate School of Agricultural Science, Tohoku UniversitySendai Japan
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Alves RN, Sundell KS, Anjos L, Sundh H, Harboe T, Norberg B, Power DM. Structural and functional maturation of skin during metamorphosis in the Atlantic halibut (Hippoglossus hippoglossus). Cell Tissue Res 2018; 372:469-492. [PMID: 29464365 DOI: 10.1007/s00441-018-2794-1] [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: 06/30/2017] [Accepted: 01/15/2018] [Indexed: 11/29/2022]
Abstract
To establish if the developmental changes in the primary barrier and osmoregulatory capacity of Atlantic halibut skin are modified during metamorphosis, histological, histochemical, gene expression and electrophysiological measurements were made. The morphology of the ocular and abocular skin started to diverge during the metamorphic climax and ocular skin appeared thicker and more stratified. Neutral mucins were the main glycoproteins produced by the goblet cells in skin during metamorphosis. Moreover, the number of goblet cells producing neutral mucins increased during metamorphosis and asymmetry in their abundance was observed between ocular and abocular skin. The increase in goblet cell number and their asymmetric abundance in skin was concomitant with the period that thyroid hormones (THs) increase and suggests that they may be under the control of these hormones. Several mucin transcripts were identified in metamorphosing halibut transcriptomes and Muc18 and Muc5AC were characteristic of the body skin. Na+, K+-ATPase positive (NKA) cells were observed in skin of all metamorphic stages but their number significantly decreased with the onset of metamorphosis. No asymmetry was observed between ocular and abocular skin in NKA cells. The morphological changes observed were linked to modified skin barrier function as revealed by modifications in its electrophysiological properties. However, the maturation of the skin functional characteristics preceded structural maturation and occurred at stage 8 prior to the metamorphic climax. Treatment of Atlantic halibut with the THs disrupter methimazole (MMI) affected the number of goblet cells producing neutral mucins and the NKA cells. The present study reveals that the asymmetric development of the skin in Atlantic halibut is TH sensitive and is associated with metamorphosis and that this barrier's functional properties mature earlier and are independent of metamorphosis.
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Affiliation(s)
- Ricardo N Alves
- Comparative Endocrinology and Integrative Biology Group (CEIB), CCMAR, CIMAR Laboratório Associado, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal.,King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Kristina S Sundell
- Fish Endocrinology Laboratory, Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30, Gothenburg, Sweden
| | - Liliana Anjos
- Comparative Endocrinology and Integrative Biology Group (CEIB), CCMAR, CIMAR Laboratório Associado, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Henrik Sundh
- Fish Endocrinology Laboratory, Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30, Gothenburg, Sweden
| | - Torstein Harboe
- Institute of Marine Research, Austevoll Research Station, 5392, Storebø, Norway
| | - Birgitta Norberg
- Institute of Marine Research, Austevoll Research Station, 5392, Storebø, Norway
| | - Deborah M Power
- Comparative Endocrinology and Integrative Biology Group (CEIB), CCMAR, CIMAR Laboratório Associado, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal.
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Sköld HN, Aspengren S, Cheney KL, Wallin M. Fish Chromatophores—From Molecular Motors to Animal Behavior. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2016; 321:171-219. [DOI: 10.1016/bs.ircmb.2015.09.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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19
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Morphological Characters and Transcriptome Profiles Associated with Black Skin and Red Skin in Crimson Snapper (Lutjanus erythropterus). Int J Mol Sci 2015; 16:26991-7004. [PMID: 26569232 PMCID: PMC4661863 DOI: 10.3390/ijms161126005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 10/28/2015] [Accepted: 11/04/2015] [Indexed: 11/23/2022] Open
Abstract
In this study, morphology observation and illumina sequencing were performed on two different coloration skins of crimson snapper (Lutjanus erythropterus), the black zone and the red zone. Three types of chromatophores, melanophores, iridophores and xanthophores, were organized in the skins. The main differences between the two colorations were in the amount and distribution of the three chromatophores. After comparing the two transcriptomes, 9200 unigenes with significantly different expressions (ratio change ≥ 2 and q-value ≤ 0.05) were found, of which 5972 were up-regulated in black skin and 3228 were up-regulated in red skin. Through the function annotation, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis of the differentially transcribed genes, we excavated a number of uncharacterized candidate pigment genes as well as found the conserved genes affecting pigmentation in crimson snapper. The patterns of expression of 14 pigment genes were confirmed by the Quantitative real-time PCR analysis between the two color skins. Overall, this study shows a global survey of the morphological characters and transcriptome analysis of the different coloration skins in crimson snapper, and provides valuable cellular and genetic information to uncover the mechanism of the formation of pigment patterns in snappers.
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Djurdjevič I, Kreft ME, Sušnik Bajec S. Comparison of pigment cell ultrastructure and organisation in the dermis of marble trout and brown trout, and first description of erythrophore ultrastructure in salmonids. J Anat 2015; 227:583-95. [PMID: 26467239 PMCID: PMC4609195 DOI: 10.1111/joa.12373] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/06/2015] [Indexed: 11/27/2022] Open
Abstract
Skin pigmentation in animals is an important trait with many functions. The present study focused on two closely related salmonid species, marble trout (Salmo marmoratus) and brown trout (S. trutta), which display an uncommon labyrinthine (marble-like) and spot skin pattern, respectively. To determine the role of chromatophore type in the different formation of skin pigment patterns in the two species, the distribution and ultrastructure of chromatophores was examined with light microscopy and transmission electron microscopy. The presence of three types of chromatophores in trout skin was confirmed: melanophores; xanthophores; and iridophores. In addition, using correlative microscopy, erythrophore ultrastructure in salmonids was described for the first time. Two types of erythrophores are distinguished, both located exclusively in the skin of brown trout: type 1 in black spot skin sections similar to xanthophores; and type 2 with a unique ultrastructure, located only in red spot skin sections. Morphologically, the difference between the light and dark pigmentation of trout skin depends primarily on the position and density of melanophores, in the dark region covering other chromatophores, and in the light region with the iridophores and xanthophores usually exposed. With larger amounts of melanophores, absence of xanthophores and presence of erythrophores type 1 and type L iridophores in the black spot compared with the light regions and the presence of erythrophores type 2 in the red spot, a higher level of pigment cell organisation in the skin of brown trout compared with that of marble trout was demonstrated. Even though the skin regions with chromatophores were well defined, not all the chromatophores were in direct contact, either homophilically or heterophilically, with each other. In addition to short-range interactions, an important role of the cellular environment and long-range interactions between chromatophores in promoting adult pigment pattern formation of trout are proposed.
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Affiliation(s)
- Ida Djurdjevič
- Department of Animal Science, Biotechnical Faculty, University of LjubljanaDomžale, Slovenia
| | - Mateja Erdani Kreft
- Institute of Cell Biology, Faculty of Medicine, University of LjubljanaLjubljana, Slovenia
| | - Simona Sušnik Bajec
- Department of Animal Science, Biotechnical Faculty, University of LjubljanaDomžale, Slovenia
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