{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,11,13]],"date-time":"2023-11-13T00:03:04Z","timestamp":1699833784656},"reference-count":23,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2005,6,1]],"date-time":"2005-06-01T00:00:00Z","timestamp":1117584000000},"content-version":"vor","delay-in-days":10958,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Exp. Zool."],"published-print":{"date-parts":[[1975,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Eggs of <jats:italic>Rana clamitans<\/jats:italic> in their own jelly coat are not fertilized by sperm of other species. When the eggs were surrounded by jelly from another species, they were fertilized by <jats:italic>R. catesbeiana<\/jats:italic> and <jats:italic>R. septentrionalis<\/jats:italic> sperm. The hybrid nature of the resulting embryos was confirmed by detection of paternal enzyme forms. The <jats:italic>R. clamitans<\/jats:italic> \u2640 \u00d7 <jats:italic>R. septentrionalis<\/jats:italic> \u2642 embryos arrested by the tailbud stage. The <jats:italic>R. clamitans<\/jats:italic> \u2640 \u00d7 <jats:italic>R. catesbeiana<\/jats:italic> \u2642 embryos developed into viable tadpoles and subsequently metamorphosed. The hybridization results coupled with the similarity of enzyme patterns indicate that <jats:italic>R. clamitans<\/jats:italic> and <jats:italic>R. catesbeiana<\/jats:italic> are genetically closely related. <jats:italic>R. clamitans<\/jats:italic> is probably not as closely related to <jats:italic>R. septentrionalis<\/jats:italic> based on the enzyme patterns. Since cross\u2010fertilization or early developmental failures of hybrids could be explained by a small number of genes, such failures must be considered with caution in determining species relationships.<\/jats:p>","DOI":"10.1002\/jez.1401920305","type":"journal-article","created":{"date-parts":[[2005,6,12]],"date-time":"2005-06-12T01:18:38Z","timestamp":1118539118000},"page":"323-329","source":"Crossref","is-referenced-by-count":8,"title":["Viable amphibian hybrids produced by circumventing a block to cross\u2010fertilization (<i>Rana clamitans<\/i> \u2640 \u00d7 <i>Rana catesbeiana<\/i> \u2642)"],"prefix":"10.1002","volume":"192","author":[{"given":"Richard P.","family":"Elinson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,6]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"180","article-title":"A key to the tadpoles of the continental United States and Canada","volume":"26","author":"Altig R.","year":"1970","journal-title":"Herpetologia"},{"key":"e_1_2_1_3_1","first-page":"196","volume-title":"Evolution in the Genus Bufo","author":"Blair W. 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