Estrogenic effects of nonylphenol and octylphenol isomers in vitro by recombinant yeast assay (RYA) and in vivo with early life stages of zebrafish

2014 ◽  
Vol 466-467 ◽  
pp. 1-10 ◽  
Author(s):  
E. Puy-Azurmendi ◽  
A. Olivares ◽  
A. Vallejo ◽  
M. Ortiz-Zarragoitia ◽  
B. Piña ◽  
...  
Keyword(s):  
Early Life ◽  
Life Stages ◽  
Recombinant Yeast ◽  
Early Life Stages ◽  
Estrogenic Effects ◽  
Recombinant Yeast Assay ◽  
Yeast Assay

In Vitro Estrogen Receptor Binding of PCBs: Measured Activity and Detection of Hydroxylated Metabolites in a Recombinant Yeast Assay

2002 ◽  
Vol 180 (3) ◽  
pp. 157-163 ◽  
Author(s):  
Alice C. Layton ◽  
John Sanseverino ◽  
Betsy W. Gregory ◽  
James P. Easter ◽  
Gary S. Sayler ◽  
...  
Keyword(s):  
Estrogen Receptor ◽  
Receptor Binding ◽  
Recombinant Yeast ◽  
Estrogen Receptor Binding ◽  
Hydroxylated Metabolites ◽  
Recombinant Yeast Assay ◽  
Measured Activity ◽  
Yeast Assay

scholarly journals Early life stages of carp (Cyprinus carpio L.) depend on ambient magnesium for their development

1991 ◽  
Vol 158 (1) ◽  
pp. 431-438 ◽  
Author(s):  
J. A. van der Velden ◽  
F. A. Spanings ◽  
G. Flik ◽  
S. E. Wendelaar Bonga
Keyword(s):  
Embryonic Development ◽  
Cyprinus Carpio ◽  
Early Life ◽  
Magnesium Concentration ◽  
Life Stages ◽  
Early Life Stages ◽  
Divalent Ions ◽  
Successful Development ◽  
Carp Cyprinus Carpio

Carp eggs, fertilized in vitro, were allowed to develop in fresh water with magnesium concentrations varying from 0.001 to 0.100 mmol l-1. Magnesium concentrations below 0.010 mmol l-1 seriously impeded carp embryonic development: the incidence of deformed larvae and mortality increased steeply to 100% at water magnesium concentrations of 0.001 mmol l-1. Thus, early life stages of carp require ambient magnesium for survival and successful development. The magnesium and calcium concentrations of the developing eggs were dependent on the ambient magnesium concentration. The uptake of magnesium by eggs decreased and the uptake of calcium increased with decreasing ambient magnesium concentrations. However, the uptake of the sum of these divalent ions seemed to be independent of ambient magnesium concentration. This indicates a competition between magnesium and calcium for (passive) uptake into developing eggs.

scholarly journals The pantophysin gene and its relationship with survival in early life stages of Atlantic cod

2020 ◽  
Vol 7 (10) ◽  
pp. 191983
Author(s):  
Håkon Otterå ◽  
Torild Johansen ◽  
Arild Folkvord ◽  
Geir Dahle ◽  
Marte Kristine Solvang Bingh ◽  
...  
Keyword(s):  
Early Life ◽  
Atlantic Cod ◽  
Experimental Studies ◽  
Gene Marker ◽  
Life Stages ◽  
Stock Management ◽  
Early Life Stages ◽  
Experimental Conditions ◽  
Temperature Regimes

Genetic markers are widely used in fisheries management around the world. While the genetic structure and markers selected are usually based on samples from the wild, very few controlled experiments have been carried out to investigate possible differences in influence on traits between markers. Here we examine the bi-allelic gene pantophysin (Pan I), widely used in the management of Atlantic cod, in a series of in vitro crosses under a range of temperatures. It has been proposed that this gene, or another tightly linked gene, may be under strong divergent selection. Resolving this issue is essential in order to interpret results when using this gene marker for stock management. We found no evidence of departure from the expected 1 : 2 : 1 Mendelian ratio for any of the three genotypes during the egg stage, while both the 6 and 12°C temperature regimes in tank experiments favoured the survival of the Pan I AA genotype. No difference in genotype survival was, however, found in a more natural mesocosm environment. Collectively, these results suggest that for the early life stages of Atlantic cod, and under the current experimental conditions, there is no strong consistent influence of Pan I genotype on survival. The results also emphasize the importance of varied experimental studies to verify the importance of environmental factors influencing genotype selection.

An in vivo testing system for endocrine disruptors in fish early life stages using induction of vitellogenin

1999 ◽  
Vol 18 (2) ◽  
pp. 337-347 ◽  
Author(s):  
Charles R. Tyler ◽  
Ronny van Aerle ◽  
Tom H. Hutchinson ◽  
Sue Maddix ◽  
Heleanne Trip
Keyword(s):  
Endocrine Disruptors ◽  
Early Life ◽  
Testing System ◽  
Life Stages ◽  
Early Life Stages ◽  
In Vivo Testing ◽  
Fish Early Life Stages

Natural and anthropogenic effects on the early life stages of European anchovy in one of its essential fish habitats, the Guadalquivir estuary

2019 ◽  
Vol 617-618 ◽  
pp. 67-79 ◽  
Author(s):  
GF de Carvalho-Souza ◽  
E González-Ortegón ◽  
F Baldó ◽  
C Vilas ◽  
P Drake ◽  
...  
Keyword(s):  
Early Life ◽  
Anthropogenic Effects ◽  
Life Stages ◽  
Early Life Stages ◽  
European Anchovy ◽  
Guadalquivir Estuary ◽  
Fish Habitats
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