This study demonstrates the potential of whole-mount in situ hybridization (WISH), in conjunction with quantitative real-time polymerase chain reaction (QPCR) assays, to examine the mechanistic basis of the effects of toxicants on early-lifestage fathead minnows. Specifically, fathead minnow embryos were exposed to the environmentally-relevant estrogen receptor agonist, estrone, and the data show that: (1) the estrogen-responsive gene transcripts esr1, vtg, and cyp19b can be up-regulated in very early-lifestages of the fathead minnow, (2) WISH methods developed for zebrafish can also be applied successfully to fathead minnows, and (3) WISH has potential to be a useful tool for toxicological studies pertaining to early-lifestage development in the fathead minnow. This type of mechanistic information relative to spatial distribution of gene expression is important in determining potential biological pathways that may be impacted by targeted chemicals and the development of associated adverse outcome pathways. This dataset is associated with the following publication: Cavallin, J., A. Schroeder, K. Jensen , D. Villeneuve , B. Blackwell, K. Carlson, M. Kahl , C. LaLone , E. Randolph , and G. Ankley. Evaluation of whole-mount in situ hybridization as a tool for pathway-based toxicological research with early-life stage fathead minnows. AQUATIC TOXICOLOGY. Elsevier Science Ltd, New York, NY, USA, 169: 19-26, (2015).
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