Variation in somatic and ovarian development: predicting susceptibility of amphibians to estrogenic contaminants

General and Comparative Endocrinology
Sara I Storrs, Raymond D Semlitsch

Abstract

Although amphibian sex determination is genetic, it can be manipulated by exogenous hormone exposure during sexual differentiation. The timing of sexual differentiation varies among anuran amphibians such that species may or may not be a tadpole during this period, and therefore, may or may not be exposed to aquatic contaminants. Estrogenic contamination is present in amphibian habitats worldwide. We examined three species with varying somatic and ovarian developmental rates to assess their susceptibility to estrogenic contaminants. American toads (Bufo americanus), gray treefrogs (Hyla versicolor), and Southern leopard frogs (Ranasphenocephala) were exposed as larvae to 17-beta-estradiol (10(-7)M), three concentrations of a widespread herbicide (1, 3, 30 ppb atrazine), or a solvent control (ethanol). Somatic and ovarian developmental stages as well as time to metamorphosis were recorded. Toads and treefrogs were examined at three weeks and metamorphosis, while leopard frogs were examined at three, six, and nine weeks as well as at metamorphosis. Our results demonstrate that each species displays heterochronic somatic and ovarian development. Further, the more rapid of the two rates determines the susceptibility to estrogenic c...Continue Reading

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Citations

Jan 9, 2010·Environmental Health Perspectives·Jason R Rohr, Krista A McCoy
Mar 2, 2010·The Journal of Experimental Biology·T B HayesM Stice
Apr 8, 2011·Aquatic Toxicology·Karen L PorterSigmund J Degitz
Apr 15, 2009·General and Comparative Endocrinology·Florencia ReyMónica Muñoz-de-Toro
May 3, 2013·Environmental Toxicology and Chemistry·Norman WagnerStefan Lötters
Mar 30, 2011·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Ilaria BernabòElvira Brunelli
May 15, 2012·Birth Defects Research. Part B, Developmental and Reproductive Toxicology·Margaret M CorviRobert L Tanguay
Nov 20, 2014·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Alina Grisel SassoneNora Raquel Ceballos
Jul 10, 2009·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Sara I Storrs-Méndez, Raymond D Semlitsch
Dec 24, 2014·Bulletin of Environmental Contamination and Toxicology·Linlin SaiCheng Peng
Nov 7, 2014·Critical Reviews in Toxicology·Glen J Van Der KraakKeith R Solomon
Jun 9, 2009·Environmental Pollution·Reinier M MannScott P Wilson
May 18, 2016·General and Comparative Endocrinology·P V Mali, N P Gramapurohit
Sep 4, 2016·Reproductive Toxicology·Susanna WegnerDavid Dix
Oct 14, 2017·Environmental Toxicology and Chemistry·Tyler D Hoskins, Michelle D Boone
Feb 10, 2009·Archives of Environmental Contamination and Toxicology·S I Storrs MéndezR D Semlitsch
Nov 2, 2013·Bulletin of Environmental Contamination and Toxicology·Ashley D WaltersJohn S Placyk
Apr 9, 2021·Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology·Samadhan PhugeRadhakrishna Pandit
Apr 19, 2021·Journal of Environmental Management·Emma F ZeitlerDeborah A McGrath
Nov 20, 2009·Environmental Science & Technology·Alan J Hosmer

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