Sex Ratios of Fleas (Siphonaptera: Ceratophyllidae) in Nests of TreeSwallows (Passeriformes: Hirundinidae) Exposed toDifferent Chemicals Written by PoB, verified by Editorial Team December 27, 2011 Hirundinidae, PasseriformesTree Swallow (Tachycineta bicolor) Science Article 5 abstractEndocrine disruptors have well-known effects on vertebrate population sex ratios, buta variety of chemicals can also affect sex ratios of invertebrates. We tested whether sex ratios of← Previous PostNext Post →Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment.