Apomorphine as an emetic for insectivorous songbirds: effectiveness and post-release effects on survival and mass change

Ceresa, Francesco; Belda, Eduardo J.; Monrós, Juan S.

doi:10.1111/jofo.12062

Cited by 3 publications

(7 citation statements)

References 18 publications

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“…, Ceresa et al. ). In addition, however, for many species, many samples are already available in natural history museums and just need to be analyzed.…”

Section: Discussionmentioning

confidence: 99%

“…In the tropics, where avian diversity is much higher and data scarcer, many new samples are needed, and can be obtained using non-lethal methods (Rosenberg and Cooper 1990, Valera et al 1997, Durães and Marini 2003, Diamond et al 2007, Ceresa et al 2014). In addition, however, for many species, many samples are already available in natural history museums and just need to be analyzed.…”

Section: Discussionmentioning

confidence: 99%

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A classification scheme for avian diet types

et al. 2016

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Descriptions of avian diets currently lack consistent terminology and standardized methods. As a consequence, most available classifications, especially for tropical birds, are inconsistent and often misleading. We identified 23 food categories most commonly eaten by birds (e.g., seeds, fruits, and insects) and proposed standard names that accurately describe the diet type associated with each food category (e.g., granivore, frugivore, and insectivore). We also propose a classification scheme for avian diet types that takes into account the number of food categories consumed and the volumetric proportion (based on stomach content analysis) of each category eaten to indicate the diet type of a species, using a binomial terminology. Given that bird diets encompass a continuum between some extremes commonly treated as distinct categories, we adopted arbitrary breaking points to delimit distinct diet types. For example, species with different proportions of insects and fruits in their diets can be classified as insectivores (IN), insectivores secondarily frugivores (INFR), frugivores‐insectivores (FR‐IN), frugivore secondarily insectivores (FRIN), and frugivores (FR). Because many factors can influence avian diets, the diet types of species can also be classified based on age‐related, sexual, seasonal, and/or geographic variation, e.g., young are insectivores and adults are frugivores, we believe that our classification scheme provides a standardized terminology that can contribute to a more consistent and effective exchange of information about avian diets.

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“…, Ceresa et al. ). In addition, however, for many species, many samples are already available in natural history museums and just need to be analyzed.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

A classification scheme for avian diet types

et al. 2016

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“…To study diet composition, during four periods (approximately monthly: 12-23 March, 10-30 April, 31 May-7 June and 2-5 July) birds captured when ringing were induced to regurgitate using apomorphine as an emetic agent (see Ceresa et al 2014 for details). Each food sample was obtained from a different individual.…”

Section: Data Collectionmentioning

confidence: 99%

Differences in time and space use between two sympatric Acrocephalus warblers with similar diets

et al. 2016

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2016) Differences in time and space use between two sympatric Acrocephalus warblers with similar diets, Bird Study, 63:2, 172-180, ABSTRACT Capsule: We found high diet overlap and different uses of space and time between Moustached Warblers Acrocephalus melanopogon and Reed Warblers Acrocephalus scirpaceus breeding in sympatry at a marshland in Spain. Aims: To study the degree of diet overlap between both species, their space use on a local scale and their breeding phenologies. Methods: We studied the breeding phenologies of the two species by standardized ringing activity. Spatial distribution was investigated by point counts. We determined diet composition from emetic samples and we collected invertebrates by standardized sweep-netting to estimate food availability. Results: Diet and prey selection were similar among species. Conversely, spatial overlap was relatively small (<50%) and breeding phenologies were not synchronized. Both food availability and the overall abundance of the two species increased throughout the breeding season. Conclusion: The two species are potential competitors for food and the observed differences in spatial and temporal niches may represent a way to lower competition for trophic resources: Moustached Warblers could reduce competition by breeding early, while Reed Warblers could avoid settling in areas occupied by the other species. ARTICLE HISTORY

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“…a substance which induces regurgitation), since its effectiveness on our study species has been tested in a previous study (Ceresa et al 2014) and several researchers demonstrated its safety for birds (e.g. Díaz 1989, Poulin et al 2002, Ceresa et al 2014. Birds were captured using mist nets (16-mm mesh) during sampling sessions of four hours, always starting 30 min before dawn.…”

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confidence: 99%

“…Birds were captured using mist nets (16-mm mesh) during sampling sessions of four hours, always starting 30 min before dawn. Following Ceresa et al (2014), captured birds were ringed, then two drops of a fresh saturated solution of apomorphine (0.04 g of hydrochloride hemihydrate per ml of water) were placed on each eye with a 1-ml pipette; birds were then held until the liquid was totally absorbed (c. 5 min). After that, birds were placed in a small, dark box lined with absorbent paper for 20 min to collect the regurgitated food, and we then released them.…”

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confidence: 99%