scholarly journals Effects of zinc on the life-cycle, growth and reproduction of the marine amphipod Corophium volutator

1999 ◽  
Vol 176 ◽  
pp. 131-138 ◽  
Author(s):  
M Conradi ◽  
MH Depledge
Keyword(s):  
Life Cycle ◽  
Corophium Volutator ◽  
Cycle Growth ◽  
Marine Amphipod ◽  
Growth And Reproduction

Effects of Long-Term Exposure to Carbaryl (Sevin) on Survival, Growth, and Reproduction of the Fathead Minnow (Pimephales promelas)

1972 ◽  
Vol 29 (5) ◽  
pp. 583-587 ◽  
Author(s):  
A. R. Carlson
Keyword(s):  
Life Cycle ◽  
Fathead Minnow ◽  
Pimephales Promelas ◽  
Threshold Concentration ◽  
Fathead Minnows ◽  
Motile Sperm ◽  
High Concentration ◽  
Toxicant Concentration ◽  
Growth And Reproduction

When fathead minnows (Pimephales promelas) were exposed to five concentrations (0.008–0.68 mg/liter) of the insecticide carbaryl for 9 months and throughout a life cycle, the highest concentration prevented reproduction and decreased survival. At the high concentration, testes contained motile sperm and ovaries were in a flaccid condition and appeared to be in a resorptive state. At the 0.68 mg/liter concentration, carbaryl appeared to contribute to mortality of larvae (produced by unexposed parents) within 30 days of hatching. Survival of young grown in the 0.008 mg/liter concentration was reduced. Since no demonstrable effects were noted for survival, growth, or reproduction at the 0.017, 0.062, and 0.21 mg/liter concentrations, this low survival value is considered not due to carbaryl. The 96-hr median tolerance concentration (TL 50) and the lethal threshold concentration (LTC) for 2-month-old fathead minnows were 9.0 mg/liter. The maximum acceptable toxicant concentration (MATC) for fathead minnows exposed to carbaryl in water with a hardness of 45.2 mg/liter and a pH of 7.5 lies between 0.21 and 0.68 mg/liter. The application factors (MATC/96-hr TL50 and MATC/LTC) both lie between 0.023 and 0.075.

TAX-DEDUCTIBLE SAVING IN A LIFE CYCLE GROWTH MODEL

1992 ◽  
Vol 31 (59) ◽  
pp. 399-413
Author(s):  
ROBERT A. ANDROKOVICH ◽  
MICHAEL J. DALY ◽  
FADLE M. NAQIB
Keyword(s):  
Life Cycle ◽  
Growth Model ◽  
Cycle Growth

Sequestration of Zinc from Zinc Oxide Nanoparticles and Life Cycle Effects in the Sediment Dweller Amphipod Corophium volutator

2011 ◽  
Vol 46 (2) ◽  
pp. 1128-1135 ◽  
Author(s):  
Julia Fabrega ◽  
Ratna Tantra ◽  
Aisha Amer ◽  
Bjorn Stolpe ◽  
Jordan Tomkins ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Life Cycle ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Corophium Volutator ◽  
Life Cycle Effects
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