Frķas-Alvarez, Patricia Superfetation in live-bearing fishes is not always the result of a morphological constraint. [electronic resource] - Oecologia 07 2016 - 645-58 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1432-1939 Standard No.: 10.1007/s00442-015-3477-1 doi Subjects--Topical Terms: AnimalsCyprinodontiformesFemaleFishesPregnancyReproductionSuperfetation