Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Incidence of Gross Malformations and Vertebral Anomalies of Natural and Hatchery Plecoglossus altivelis

Noritomo Komada
Copeia
Vol. 1980, No. 1 (Feb. 1, 1980), pp. 29-35
DOI: 10.2307/1444131
Stable URL: http://www.jstor.org/stable/1444131
Page Count: 7
  • Read Online (Free)
  • Download ($12.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Incidence of Gross Malformations and Vertebral Anomalies of Natural and Hatchery Plecoglossus altivelis
Preview not available

Abstract

Frequency of morphological abnormalities in ayu from the Yahagi River was about 0.15%; 442 hatchery-reared ayu showed a rate of 70.14%. The incidence of shortened vertebrae and fused vertebrae in hatchery-reared ayu were significantly higher than in natural populations. The types of malformations occurring in hatchery-reared fish were more numerous than in natural populations.

Page Thumbnails

  • Thumbnail: Page 
29
    29
  • Thumbnail: Page 
30
    30
  • Thumbnail: Page 
31
    31
  • Thumbnail: Page 
32
    32
  • Thumbnail: Page 
33
    33
  • Thumbnail: Page 
34
    34
  • Thumbnail: Page 
35
    35