Species and sex divergence in vocalizations between hybridizing role-reversed shorebirds, Northern Jacana (Jacana spinosa) and Wattled Jacana (Jacana jacana)
Species and sex divergence in vocalizations between hybridizing role-reversed shorebirds, Northern Jacana (Jacana spinosa) and Wattled Jacana (Jacana jacana)
ABSTRACT Species-specific vocalizations can act as a reproductive isolating mechanism between closely related populations. We analyzed vocal divergence between two hybridizing species of sex-role reversed polyandrous shorebirds, the Northern Jacana (Jacana spinosa) and Wattled Jacana (Jacana jacana). We found that J. spinosa calls have higher peak frequency and fundamental frequency than J. jacana calls. We also compared calls between males and females, as both jacana species are sex-role reversed and females compete for male mates. Males produce calls with a higher peak frequency, exhibit shorter note lengths and emit a greater number of notes within a calling bout than females, which could relate to mate attraction. These results suggest that vocal divergence could act as a behavioral barrier to limit hybridization between the species and vocalizations may function differently between male and female jacanas.
Brown Toni、Derryberry Elizabeth P.、Lipshutz Sara E.、Zwicky Gina、Buck Evan J.
Department of Ecology and Evolutionary Biology, Tulane UniversityDepartment of Ecology and Evolutionary Biology, University of Tennessee||Department of Ecology and Evolutionary Biology, Tulane UniversityDepartment of Ecology and Evolutionary Biology, University of Tennessee||Department of Ecology and Evolutionary Biology, Tulane University||Department of Biology, Indiana UniversityDepartment of Ecology and Evolutionary Biology, Tulane UniversityDepartment of Ecology and Evolutionary Biology, University of Tennessee
动物学遗传学普通生物学
callhybridizationjacanassex differencesshorebirdvocal divergence
Brown Toni,Derryberry Elizabeth P.,Lipshutz Sara E.,Zwicky Gina,Buck Evan J..Species and sex divergence in vocalizations between hybridizing role-reversed shorebirds, Northern Jacana (Jacana spinosa) and Wattled Jacana (Jacana jacana)[EB/OL].(2025-03-28)[2025-05-23].https://www.biorxiv.org/content/10.1101/757336.点此复制
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