Pathological changes in the branchial chamber wall of stingrays, Dasyatis spp., associated with the presence of juvenile gnathiids(Isopoda, Crustacea).

DOI Web Site 3 Citations
  • Honma Yoshiharu
    Sado Marine Biological Station, Faculty of Science, Niigata University
  • Chiba Akira
    Department of Biology, Faculty of Dentistry at Niigata, Nippon Dental University

Bibliographic Information

Other Title
  • グナチア幼生（等脚類）の寄生によるアカエイ属魚類鰓腔壁に生じた病理的変化
  • グナチア幼虫(等脚類)の寄生によるアカエイ属魚類鰓腔壁に生じた病理的変化〔英文〕
  • グナチア ヨウチュウ トウキャクルイ ノ キセイ ニ ヨル アカエイゾク ギョ

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Description

Infestation of juvenile gnathiids, Gnathia sp., on the branchial chamber wall of two species of stingrays, Dasyatis akajei and D. matsubarai, caused proliferative inflammation of dermal tissue, and a heavy disruption of epithelia and smooth muscles. In addition to congestion of hemolytic blood cells, a prominent aggregation of heterophils, macrophages engaged in active phagocytosis, and plasma cells was also seen. It is of interest to note that evidence of a remarkable propagation of bacilli was encountered on the surface of the gnathiids and on the injured mucosal coat of the host fish. Besides a lot of blood sucking by gnathiids, bacterial infection might be one of the causes of host fish death or debility.

Journal

  • Fish Pathology

    Fish Pathology 26 (1), 9-16, 1991

    The Japanese Society of Fish Pathology

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