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Thyroid gland development in a neotenic goby (ice goby, Leucopsarion petersii) and a common goby (Ukigori, Gymnogobius urotaenia) during early life stages

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اقرأ أكثر حفظ في قائمتي
  • معلومة اضافية
    • نبذة مختصرة :
      In order to study the characteristics of neoteny in teleosts, development of the thyroid system and digestive tract of a neotenic goby (ice goby, Leucopsarion petersii) and a non-neotenic goby (ukigori, Gymnogobius urotaenia) were compared. In juvenile ukigori, the intestine was found to be convoluted once in the antero-midpart, and gastric glands were present. In the ice goby, the alimentary canal was straight, and no gastric gland was observed even in adult, suggesting that the ice goby retains larval features, not only in appearance but also in internal organs. A marked difference was also found in the thyroid system. In ukigori, activity of the thyroid gland and thyroid stimulating hormone (TSH) cells increased between flexion and postflexion larval phases. However, in the ice goby, thyroid glands remained inactive, and no TSH cells were observed. A delayed development of the thyroid system was suggested as a major factor contributing to neoteny in the ice goby.
    • الموضوع:
      neoteny; ice goby (Leucopsarion petersii); ukigori (Gymnogobius urotaenia); thyroid; digestive tract; journal article
    • Availability:
      Open access content. Open access content
    • Note:
      English
    • Other Numbers:
      YJ@ oai:repository.kulib.kyoto-u.ac.jp:2433/57206
      0289-0003
      AA10545874
      Zoological Science
      20
      7
      883
      888
      957809587
    • Contributing Source:
      KYOTO UNIV
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.ocn957809587
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