Reproductive Parameters in the Critically Endangered Blue-Throated Macaw: Limits to the Recovery of a Parrot under Intensive Management

Rediscovered in the wild twenty years ago, the breeding biology of wild Blue-throated Macaws remains largely unexplored, yet is essential to its effective conservation and recovery. Here, we analyse reproductive parameters in an intensively managed wild population of Blue-throated Macaws, providing...

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Autores principales: Berkunsky, Igor, Daniele, Gonzalo, Kacoliris, Federico Pablo, Díaz Luque, José, Silva Frias, Carmen P., Aramburú, Rosana Mariel, Gilardi, James D.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Zoología
Blue-throated Macaws
Reproductive parameters
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85130
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85130
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Zoología
Blue-throated Macaws
Reproductive parameters
spellingShingle Zoología
Blue-throated Macaws
Reproductive parameters
Berkunsky, Igor
Daniele, Gonzalo
Kacoliris, Federico Pablo
Díaz Luque, José
Silva Frias, Carmen P.
Aramburú, Rosana Mariel
Gilardi, James D.
Reproductive Parameters in the Critically Endangered Blue-Throated Macaw: Limits to the Recovery of a Parrot under Intensive Management
topic_facet Zoología
Blue-throated Macaws
Reproductive parameters
description Rediscovered in the wild twenty years ago, the breeding biology of wild Blue-throated Macaws remains largely unexplored, yet is essential to its effective conservation and recovery. Here, we analyse reproductive parameters in an intensively managed wild population of Blue-throated Macaws, providing the first data on the breeding biology of this critically endangered species. During the six-year study period, 2007-2012, the number of active breeding pairs either remained constant or decreased, depending on the site, and no new breeding pairs were discovered despite extensive searching. We documented nesting attempts in natural cavities in dead palms or live hardwoods, and artificial nest boxes. Egg-laying was concentrated during the end of dry season and the beginning of the wet season, August through December. Hatching failure was the greatest cause of egg losses. Half of the breeding attempts of Blue-throated Macaws produced at least one fledging, on average two, after a 85 days nestling period. An average of 4.3 nestlings per year fledged from all known wild nests combined. Each pair lost roughly 65% of its initial reproductive investment at each nesting attempt. In most successful nesting attempts of individualized pairs, a new nesting attempt was not detected the following year. All monitored breeding pairs showed high nest site fidelity, reusing hardwood-tree cavities and nest boxes. Our findings will aid conservation efforts by refining current actions and prompting new approaches towards the conservation and recovery of the Blue-throated Macaw.
format Articulo
Articulo
author Berkunsky, Igor
Daniele, Gonzalo
Kacoliris, Federico Pablo
Díaz Luque, José
Silva Frias, Carmen P.
Aramburú, Rosana Mariel
Gilardi, James D.
author_facet Berkunsky, Igor
Daniele, Gonzalo
Kacoliris, Federico Pablo
Díaz Luque, José
Silva Frias, Carmen P.
Aramburú, Rosana Mariel
Gilardi, James D.
author_sort Berkunsky, Igor
title Reproductive Parameters in the Critically Endangered Blue-Throated Macaw: Limits to the Recovery of a Parrot under Intensive Management
title_short Reproductive Parameters in the Critically Endangered Blue-Throated Macaw: Limits to the Recovery of a Parrot under Intensive Management
title_full Reproductive Parameters in the Critically Endangered Blue-Throated Macaw: Limits to the Recovery of a Parrot under Intensive Management
title_fullStr Reproductive Parameters in the Critically Endangered Blue-Throated Macaw: Limits to the Recovery of a Parrot under Intensive Management
title_full_unstemmed Reproductive Parameters in the Critically Endangered Blue-Throated Macaw: Limits to the Recovery of a Parrot under Intensive Management
title_sort reproductive parameters in the critically endangered blue-throated macaw: limits to the recovery of a parrot under intensive management
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/85130
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