Results 1 - 7 of 7 for ontogenetic characters within all areas of the EPA. Only web pages are included. Search all document formats.

Page Title | About the Gulf Ecology Division | US EPA11-23-2009
... concluded that the siphonal spines of Melongena corona are acquired ontogenetically and, consequently, that the possession of siphonal spines is not a valid morphological character on which to base a subspecies distinction in this species ...
http://www.epa.gov/ged/publica/c1680.htm (HTML)
Phylogeny of Acoustic Orthoptera and the Effects of Microhabitats on Acoustic Phenotypes02-11-2004
... that morphological phenotypes in acoustic Ensifera (Orthoptera) are subject to ontogenetic heterochrony, and may be regulated by the environmental parameters of ... correlation between paedomorphic (juvenile) acoustic phenotypes, paedomorphic phenotypes in other characters, and microhabitat parameters such as photoperiod and temperature.
http://cfpub.epa.gov/ncer_abstracts/index.cfm/fuseaction/display.abstr... (HTML)
Phylogeny of Acoustic Orthoptera and the Effects of Microhabitats on Acoustic Phenotypes02-11-2004
... that morphological phenotypes in acoustic Ensifera (Orthoptera) are subject to ontogenetic heterochrony, and may be regulated by the environmental parameters of ... correlation between paedomorphic (juvenile) acoustic phenotypes, paedomorphic phenotypes in other characters, and microhabitat parameters such as photoperiod and temperature.
http://cfpub.epa.gov/ncer_abstracts/index.cfm/fuseaction/display.abstr... (HTML)
Page Title | About the Gulf Ecology Division | US EPA11-23-2009
Ontogenetic Changes in Biochemical Composition During Larval and Early Postlarval Development of Lepidophthalmus louisianensis, A Ghost Shrimp with Abbreviated Development.
http://www.epa.gov/ged/publica/cabprj28.htm (HTML)
Page Title | About the Gulf Ecology Division | US EPA11-23-2009
A potential ontogenetic or developmental response is demonstrated in American eels captured in ... preface, are intended to demonstrate the specific characteristics or key characters of each species.
http://www.epa.gov/ged/publica/cabanc14.htm (HTML)
Page Title | About the Gulf Ecology Division | US EPA11-23-2009
... concluded that the siphonal spines of Melongena corona are acquired ontogenetically and, consequently, that the possession of siphonal spines is not a valid morphological character on which to base a subspecies distinction in this species ...
http://www.epa.gov/ged/publica/cabprj8.htm (HTML)
Page Title | About the Gulf Ecology Division | US EPA11-23-2009
Individuals from various ontogenetic stages of longnose killifish (Fundulus similis) were exposed to toxaphene for 28 days in flow-through ...
http://www.epa.gov/ged/publica/keycb3.htm (HTML)

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