Artículo
Concentrations of Hormones During the Mid-Incubation Period in Kleptoparasitic and Honest Common Terns Sterna hirundo
Fecha de publicación:
12/2017
Editorial:
Polish Academy of Sciences. Museum and Institute of Zoology
Revista:
Acta Ornithologica
ISSN:
0001-6454
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Kleptoparasitism is a well-known foraging strategy used by many colonial seabirds. The expression of this behavior can reduce the cost of foraging during the breeding season and ultimately this can reflected in physiological parameters. Here we analyzed the relationship between the trophic strategy of Common Terns (Sterna hirundo) and two hormones: corticosterone (CORT) and prolactin (PRL). The study was conducted during the breeding seasons 2012-2014 at the Banter See colony in northern Germany where individuals with different foraging strategies were identified and monitored since 2008. We studied the concentration of hormones in two groups of birds: kleptoparasitic individuals (i.e. individuals who steal the food captured by another individual), and honest individuals (i.e. individuals who obtain the food on their own). Blood samples were obtained during the mid-incubation period using a non-invasive technique. Both hormones showed no significant relationship to each other. CORT concentration was similar in both groups of birds. However, the concentration of PRL was higher in parasitic than honest individuals in 2014. In addition, CORT modelling indicated a year effect (higher CORT in 2013), and PRL modelling indicated a significant effect of year (higher PRL in 2012) and a significant interaction between year and the trophic strategy in 2014. The results show no clear relationship between the feeding strategy and studied corticosterone and prolactin levels.
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Licencia
Identificadores
Colecciones
Articulos(IIMYC)
Articulos de INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Articulos de INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Citación
Paterlini, Carla Ángela; García, Germán Oscar; Riechert, Juliane; Becker, Peter H; Concentrations of Hormones During the Mid-Incubation Period in Kleptoparasitic and Honest Common Terns Sterna hirundo; Polish Academy of Sciences. Museum and Institute of Zoology; Acta Ornithologica; 52; 2; 12-2017; 157-165
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