Volume 28 Issue 6
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ZHU Jie, ZHANG Xiu-Mei, GAO Tian-Xiang. MORPHOLOGICAL STUDIES ON THE DEVELOPMENT OF MELANOPHORES AND SCALES IN MALPIGMENTED PARALICHTHYS OLIVACEUS[J]. ACTA HYDROBIOLOGICA SINICA, 2004, 28(6): 653-658.
Citation: ZHU Jie, ZHANG Xiu-Mei, GAO Tian-Xiang. MORPHOLOGICAL STUDIES ON THE DEVELOPMENT OF MELANOPHORES AND SCALES IN MALPIGMENTED PARALICHTHYS OLIVACEUS[J]. ACTA HYDROBIOLOGICA SINICA, 2004, 28(6): 653-658.
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MORPHOLOGICAL STUDIES ON THE DEVELOPMENT OF MELANOPHORES AND SCALES IN MALPIGMENTED PARALICHTHYS OLIVACEUS

  • Fishery College, Ocean University of China, Qingdao, 266003

  • Received Date: July 19, 2003
  • Rev Recd Date: May 19, 2004
  • Published Date: November 24, 2004
    Graphical Abstract
    • Abstract
  • In this study,integrated morphological observations were carried out on the occurrence and development of melanophores and scales in hatchery-reared normal and malpigmented Japanese flounder Paralichthys olivaceus. The results showed that starry larval melanophores occurred first on the skin of both sides of larvae.With the process of metamorphosis,on the ocular side(left side),adult melanophores occurred and replaced larval melanophores gradually,while on the blind side (right side),larval melanophores degenerated and no adult melanophores appeared.The blind side lost pigment gradually and became white in the end.Malpigmentation occurred at the post-metamorphosis stage.Albinism and ambicoloration formed almost at the same time.Due to unsuccessful replacement of adult melanophores by larval melanophores,the skin in ocular side of fish body lost pigment and formed white irregular patches.Albinism occurred.On the other hand,adult melanophores developed abnormally and replaced the larval melanophores and eventually formed dark patches on the blind side.It was called ambicoloration.At 30 days old,the malpigmentation became evident at the completion of metamorphosis.At about 60 days old,original cycloid scales occurred on both sides of larval bodies.The cycloid scales developed into ctenoid scales on the normal ocular side while remained original status on the normal blind side.Contrast to malpigmented individuals,it was observed that the albino ocular side was still covered by cycloid scales,but the cycloid scales developed into ctenoid scales on the ambicolored blind side.Furthermore,observations of the scales on different postions of recovering albino fish showed the development of scales from immature cycloid scales to mature ctenoid scales following the recovery of pigmentation.It is suggested that a close relationship existed between the occurrence of pigmentation and development of scales in Japanese flounder.
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  • [1]
    Seikai T.Process of pigment cell differentiation in skin on the left and right sides of the Japanese flounder,Paralichthys olivaceus[J].Japanese Journal of Ichthyology,1992,39:85-92[2] Seikai.T.Early development of seqamation in relation to color anomalies in hatchery-reared flounder,Paralichthys olivaceus[J].Japanese Journal of Ichthyology,1980,27(3):249-255[3] Kanazawa A.Nutritional mechanisms involved in the occurrence of abnormal pigmentation in hatchery-reared flatfish[J].Journal of the World Aquaculture Society,1993,24:162-166[4] Ottesen O H,Strand H K.Growth,development and skin abnormalities of halibut(Hippoglossus hippoglossus L.)juveniles kept on different bottom substrates[J].Aquqaculture,1996,146:17-25[5] Iwata N,Kikuchi K.Effects of sandy substrate and light on hypermelanosis of the blind side in cultured Japanese flounder Paralichthys oli-vaceus[J].Aquaculture,1992,105:73-82[6] Miki N,Tanigushi T,Hamakawa H.Reduction of albinism in hatchery-reared flounder"Hirame",Paralichthys olivacues by feeding on rotifer enriched with Vitamin A[J].Suisanzoshoku,1990,38:147-155[7] Est関ez A,Kanazawa A.Effect of(n-3)PUFA and Vitamin A Artemia enrichment on pigmentation success of turbot,Scophthalmus maximus(L.)[J].Aquaculture Nutrition.1995,1:159-168[8] Seikai T.Reduction in occurrence frequency of albinism in juvenile flounder Paralichthys olivaceus hatchery-reared on wild zooplankton[J].Nippon Suisan Gakkaishi,1985,51(8):1261-1267[9] Seikai T.Influences of fluorescent light irradiation,ocular side pigmentation,and source of fishes on the blind side pigmentation in the young Japanese flounder,Paralichthys olivaceus[J].Suisanzoshoku,1991,39:173-180[10] Seikai T.The occurrence of ambicoloration on blind side of Japanese flounder Paralichthys olivaceus[J].Aquaculture,2000,3:92-95[11] Inui Y,Miwa S.Thyroid hormone induces metamorphosis of flounder larvae.General and Comparative[J].Endocrinology,1985,60:450-454

    Seikai T.Process of pigment cell differentiation in skin on the left and right sides of the Japanese flounder,Paralichthys olivaceus[J].Japanese Journal of Ichthyology,1992,39:85-92[2] Seikai.T.Early development of seqamation in relation to color anomalies in hatchery-reared flounder,Paralichthys olivaceus[J].Japanese Journal of Ichthyology,1980,27(3):249-255[3] Kanazawa A.Nutritional mechanisms involved in the occurrence of abnormal pigmentation in hatchery-reared flatfish[J].Journal of the World Aquaculture Society,1993,24:162-166[4] Ottesen O H,Strand H K.Growth,development and skin abnormalities of halibut(Hippoglossus hippoglossus L.)juveniles kept on different bottom substrates[J].Aquqaculture,1996,146:17-25[5] Iwata N,Kikuchi K.Effects of sandy substrate and light on hypermelanosis of the blind side in cultured Japanese flounder Paralichthys oli-vaceus[J].Aquaculture,1992,105:73-82[6] Miki N,Tanigushi T,Hamakawa H.Reduction of albinism in hatchery-reared flounder"Hirame",Paralichthys olivacues by feeding on rotifer enriched with Vitamin A[J].Suisanzoshoku,1990,38:147-155[7] Est関ez A,Kanazawa A.Effect of(n-3)PUFA and Vitamin A Artemia enrichment on pigmentation success of turbot,Scophthalmus maximus(L.)[J].Aquaculture Nutrition.1995,1:159-168[8] Seikai T.Reduction in occurrence frequency of albinism in juvenile flounder Paralichthys olivaceus hatchery-reared on wild zooplankton[J].Nippon Suisan Gakkaishi,1985,51(8):1261-1267[9] Seikai T.Influences of fluorescent light irradiation,ocular side pigmentation,and source of fishes on the blind side pigmentation in the young Japanese flounder,Paralichthys olivaceus[J].Suisanzoshoku,1991,39:173-180[10] Seikai T.The occurrence of ambicoloration on blind side of Japanese flounder Paralichthys olivaceus[J].Aquaculture,2000,3:92-95[11] Inui Y,Miwa S.Thyroid hormone induces metamorphosis of flounder larvae.General and Comparative[J].Endocrinology,1985,60:450-454
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