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Survey Data Report in Support of the Sediment Ecological Risk Assessment at Calcasieu Estuary, Louisiana12-09-2009
Early gastrula - beginnings of invagination of the blastula wall are evident... Late gastrula - gastrula in which archenteron has developed in length to two-thirds ...
http://www.epa.gov/region6/6sf/louisiana/calcasieu/la_calcasieu_porewa... (PDF)
COMMENTS OF GENERAL ELECTRIC COMPANY ON THE ECOLOGICAL RISK ASSESSMENT FOR THE GENERAL ELECTRIC/HOUSATONIC RIVER SITE, REST OF RIVER (JULY 2003 DRAFT), 9/29/2003, SDMS# 20060110-29-2003
Gosner stages 7 through 16 were referred to as blastula/gastrula stage and Gosner stages 17 through 20 were referred to ...
http://www.epa.gov/region1/ge/thesite/restofriver/reports/final_era/co... (PDF)
doi:10.1016/S0300-483X(02)00695-902-18-2003
... 8C as described above until the control embryos reached late gastrula stage at which time they were fixed with 1% glutaraldehyde ...
http://www.epa.gov/ncer_pubs/full_text/26910.pdf (PDF)
n09-27-2001
Early gastrula - beginnings of invagination of the blastula wall are evident... Late gastrula - gastrula in which archenteron has developed in length to two-thirds ...
http://www.epa.gov/region6/6sf/pdffiles/porewater_report.pdf (PDF)
PII: S0166-445X(99)00032-602-15-2000
In addition, enzymatically dechorionated embryos (stage 13, gastrula) were exposed and compared to responses in embryos with intact ... Exposure at multicellular (early high gastrula) stage was initiated immediately after the above.
http://www.epa.gov/ncer_pubs/full_text/24637.pdf (PDF)
Page Title | About the Gulf Ecology Division | US EPA11-23-2009
Only one embryonic stage (gastrula) was confounded by second-order interactions (temperature x duration of exposure x total residual chlorination.
http://www.epa.gov/ged/publica/c0582.htm (HTML)
Page Title | About the Gulf Ecology Division | US EPA11-23-2009
The 12-d assay included development from tissue cap stage embryos (late gastrula) through 2-days post-hatch. The average ...
http://www.epa.gov/ged/publica/c1175.htm (HTML)
ECOTOX | MED | US EPA06-24-2009
fingerling. FO. flower opening. FT. Froglet. FY. fry. GA. Gastrula. GE. gestation. GL. Glochidia. GM. Gamete. GP. Lag Growth Phase.
http://cfpub.epa.gov/ecotox/help.cfm?help_id=Lifestage%26help_type=def... (HTML)
ECOTOX08-17-2009
... organism(s) female gametophyte(s) fingerling flower opening Froglet fry Gastrula gestation Glochidia Gamete Lag Growth Phase germinated seed(s) incipient ...
http://cfpub.epa.gov/ecotox/blackbox/help/codelist.pdf (PDF)
ECOTOX | MED | US EPA06-24-2009
germination. go. gosner stage. gs. growing season. gts. gastrula stage. h. hour(s. hbf. hours pre-fertilization. Code. Description. hpe.
http://cfpub.epa.gov/ecotox/help.cfm?help_id=OBSDURATION%26help_type=d... (HTML)

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