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Factors Affecting Motility Characteristics and Fertilizing Ability of Sea Lamprey Spermatozoa

Summary

Abstract.—This study was conducted to determine the basic motility characteristics of the spermatozoa (hereafter, sperm) of sea lampreys Petromyzon marinus using computer-assisted motility analysis. We determined the effects of NaCl, KCl, and pH on semen motility. We also tested the effects of time after activation and sterilization on sperm motility and fertilizing ability. Sperm motility was inhibited by high osmolality (80 mM NaCl or KCl). There were inverse relationships between the NaCl concentration and straight-line velocity (VSL; r2 5 0.97, P , 0.01) and linearity (LIN; r2 5 0.81, P , 0.05). The duration of sperm motility decreased with increases in pH. Positive linear relationships were obtained between pH and VSL (r2 5 0.79, [...]

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ciereszko et al 2002 TAFS 131_193-202.pdf
“ciereszko et al 2002 TAFS 131_193-202”
209.58 KB application/pdf

Communities

  • Pacific Lamprey Data Clearinghouse
  • Pacific Region, Region 1
  • US Fish and Wildlife Service (USFWS)

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