𝔖 Bobbio Scriptorium
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Comparative sensitivity of sea urchin sperm bioassays to metals and pesticides

✍ Scribed by Paul A. Dinnel; Jeanne M. Link; Q. J. Stober; M. W. Letourneau; W. E. Roberts


Book ID
105126129
Publisher
Springer
Year
1989
Tongue
English
Weight
842 KB
Volume
18
Category
Article
ISSN
0090-4341

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✍ Giese, Arthur C. πŸ“‚ Article πŸ“… 1939 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 713 KB

## FOUR FIGURES Recent studies on the effect of ultraviolet radiations upon division rate of sea urchin eggs have demonstrated that less energy is needed at h2804A than at A2654A for equivalent retardation (Giese, '38a). The first wavelength is near the absorption maximum of cytoplasmic proteins (

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Bioassays were developed using sperm of a sea urchin (Echinometra mathaei), and sperm, embryos, and larvae of a bivalve species (Isognomon californicum). Sea urchin spawning was restricted to only a few months of the year and viability of sperm throughout the year varied from 5 to 75%. Sea urchin fe