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VERTEBRAL ABNORMALITIES IN JUVENILE INLAND SILVERSIDES, MENIDIA BERYLLINA, EXPOSED TO TERBUFOS DURING EMBRYOGENESIS
Citation:
Middaugh, D., J. Fournie, AND M. Hemmer. VERTEBRAL ABNORMALITIES IN JUVENILE INLAND SILVERSIDES, MENIDIA BERYLLINA, EXPOSED TO TERBUFOS DURING EMBRYOGENESIS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/382 (NTIS PB91163956), 1990.
Description:
Embryos of the inland silverside, Menidia beryllina, were exposed to nominal concentration of 50 ug terbufos 1-1 during the first five days of embryogenesis. ilversides were maintained in clean dilute seawater until 37 days after hatching. adiographs revealed compressed and use vertebrae and dorsal-ventral misalignment of pre- and postzygapophysea processes. istopathological examination of individuals exposed to terbufos during embryogenesis revealed various vertebral lesions ranging from small hyperostoses to almost complete fusion of some vertebrae.