Conspecific density and habitat quality drive the defence and vocal behaviour of a territorial passerine
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Título: | Conspecific density and habitat quality drive the defence and vocal behaviour of a territorial passerine |
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Autor/es: | Barrero, Adrián | Gómez-Catasús, Julia | Pérez-Granados, Cristian | Bustillo-de la Rosa, Daniel | Traba, Juan |
Grupo/s de investigación o GITE: | Ecología y Conservación de Poblaciones y Comunidades Animales (ECPCA) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ecología |
Palabras clave: | Breeding season | Food availability | Intraspecific competition | Male density | Territory defence |
Fecha de publicación: | 15-dic-2023 |
Editor: | John Wiley & Sons |
Cita bibliográfica: | Ibis. 2023. https://doi.org/10.1111/ibi.13295 |
Resumen: | Territorial defence depends on highly interrelated factors such as food abundance and conspecific density. We used Dupont's Lark Chersophilus duponti as a model species to evaluate the response of a territorial bird to a foreign male playback, examining how conspecific density, habitat quality and male body condition impact responses. The study was conducted in central Spain with variable male density. Response (yes/no), latency time, distance to the playback speaker, and the number of songs and other vocalizations were monitored for 5 min. Habitat quality was estimated using BlueNDVI vegetation index extracted from high-resolution drone imagery, which is a proxy for arthropod prey biomass. Conspecific density (Kernel Density Estimator) and male body condition were calculated to assess their effect on response and intensity. We applied generalized linear mixed models (GLMMs) to determine which factors predicted the response and its intensity. There was a greater response probability in areas with a higher density of conspecifics and in areas of poorer habitat quality (i.e. lower BlueNDVI values). In contrast, latency time was longer in areas with lower conspecific density. Intrasexual communication (singing and calling rates) increased with habitat quality. Intraspecific communication (other vocalizations) increased in poorer quality habitats and at a higher density of conspecifics. Body condition was not related to any variables. Our results suggest that male density, sometimes used as an indicator of an area being well conserved for the species, may reflect areas of poorer habitat quality occupied by unpaired floater males, whereas paired territorial males would occupy and defend higher quality areas, leading to lower density. |
Patrocinador/es: | This study was supported by the European Union (LIFE Ricotí project LIFE15-NAT-ES-000802 and LIFE Connect Ricotí project LIFE20-NAT/ES/000133) and the BBVA-Ricotí project, funded by the BBVA Foundation. This paper contributes to project REMEDINAL-TE from CAM. |
URI: | http://hdl.handle.net/10045/139505 |
ISSN: | 0019-1019 (Print) | 1474-919X (Online) |
DOI: | 10.1111/ibi.13295 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2023 The Authors. Ibis published by John Wiley & Sons Ltd on behalf of British Ornithologists' Union. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1111/ibi.13295 |
Aparece en las colecciones: | INV - ECPCA - Artículos de Revistas |
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