Reproductive parameters of the turquoise-fronted parrot (Amazona aestiva) in the dry Chaco forest

The progressive exploitation and destruction of nesting habitat in recent years, combined with the substantial pressure from legal and illegal removal of wild nestlings and adults, justifies the development of a comprehensive study on the reproductive biology of the Turquoise-fronted Parrot (Amazona...

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Autores principales: Berkunsky, I., Segura, L.N., Ruggera, R.A., Faegre, S.I.K., Trofino-Falasco, C., López, F.G., Velasco, M.A., Kacoliris, F.P., Aramburú, R.M., Reboreda, J.C.
Formato: JOUR
Materias:
Argentina
Blue-fronted parrot
Breeding ecology
Chaco
Psittaciformes
Trade
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17126568_v12_n2_p_Berkunsky
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_17126568_v12_n2_p_Berkunsky
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spelling todo:paper_17126568_v12_n2_p_Berkunsky2023-10-03T16:30:12Z Reproductive parameters of the turquoise-fronted parrot (Amazona aestiva) in the dry Chaco forest Berkunsky, I. Segura, L.N. Ruggera, R.A. Faegre, S.I.K. Trofino-Falasco, C. López, F.G. Velasco, M.A. Kacoliris, F.P. Aramburú, R.M. Reboreda, J.C. Argentina Blue-fronted parrot Breeding ecology Chaco Psittaciformes Trade The progressive exploitation and destruction of nesting habitat in recent years, combined with the substantial pressure from legal and illegal removal of wild nestlings and adults, justifies the development of a comprehensive study on the reproductive biology of the Turquoise-fronted Parrot (Amazona aestiva). We analyzed breeding parameters in a wild protected population of Turquoise-fronted Parrots in the Chaco forest, Argentina, examining variation among years, over the course of the breeding season, and in relation to the age of the nest. Mean clutch-size per nesting attempt was 3.68 eggs. Hatching success (proportion of eggs laid that hatch) was 0.73. Fledging success (proportion of nestlings that fledge) was 0.88. The overall breeding success (mean number of fledglings per laying female per year) was 0.95. Clutch size did not vary among years but it decreased with the delay of the nest initiation date. Hatching failure was the greatest cause of egg partial losses, and brood reduction was the main cause of nestling partial loses. Brood reduction was positively correlated with clutch size and with egg-laying date. We did not find interannual variation in any of the clutch or brood size variables. Our results showed that the population of Turquoise-fronted Parrots in the dry Chaco forest has high values of clutch size and nestling survival, and low values of hatching success. However, some aspects of the breeding biology need more attention, especially if the species continues to be harvested. © 2017 by the author(s). JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17126568_v12_n2_p_Berkunsky
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Blue-fronted parrot
Breeding ecology
Chaco
Psittaciformes
Trade
spellingShingle Argentina
Blue-fronted parrot
Breeding ecology
Chaco
Psittaciformes
Trade
Berkunsky, I.
Segura, L.N.
Ruggera, R.A.
Faegre, S.I.K.
Trofino-Falasco, C.
López, F.G.
Velasco, M.A.
Kacoliris, F.P.
Aramburú, R.M.
Reboreda, J.C.
Reproductive parameters of the turquoise-fronted parrot (Amazona aestiva) in the dry Chaco forest
topic_facet Argentina
Blue-fronted parrot
Breeding ecology
Chaco
Psittaciformes
Trade
description The progressive exploitation and destruction of nesting habitat in recent years, combined with the substantial pressure from legal and illegal removal of wild nestlings and adults, justifies the development of a comprehensive study on the reproductive biology of the Turquoise-fronted Parrot (Amazona aestiva). We analyzed breeding parameters in a wild protected population of Turquoise-fronted Parrots in the Chaco forest, Argentina, examining variation among years, over the course of the breeding season, and in relation to the age of the nest. Mean clutch-size per nesting attempt was 3.68 eggs. Hatching success (proportion of eggs laid that hatch) was 0.73. Fledging success (proportion of nestlings that fledge) was 0.88. The overall breeding success (mean number of fledglings per laying female per year) was 0.95. Clutch size did not vary among years but it decreased with the delay of the nest initiation date. Hatching failure was the greatest cause of egg partial losses, and brood reduction was the main cause of nestling partial loses. Brood reduction was positively correlated with clutch size and with egg-laying date. We did not find interannual variation in any of the clutch or brood size variables. Our results showed that the population of Turquoise-fronted Parrots in the dry Chaco forest has high values of clutch size and nestling survival, and low values of hatching success. However, some aspects of the breeding biology need more attention, especially if the species continues to be harvested. © 2017 by the author(s).
format JOUR
author Berkunsky, I.
Segura, L.N.
Ruggera, R.A.
Faegre, S.I.K.
Trofino-Falasco, C.
López, F.G.
Velasco, M.A.
Kacoliris, F.P.
Aramburú, R.M.
Reboreda, J.C.
author_facet Berkunsky, I.
Segura, L.N.
Ruggera, R.A.
Faegre, S.I.K.
Trofino-Falasco, C.
López, F.G.
Velasco, M.A.
Kacoliris, F.P.
Aramburú, R.M.
Reboreda, J.C.
author_sort Berkunsky, I.
title Reproductive parameters of the turquoise-fronted parrot (Amazona aestiva) in the dry Chaco forest
title_short Reproductive parameters of the turquoise-fronted parrot (Amazona aestiva) in the dry Chaco forest
title_full Reproductive parameters of the turquoise-fronted parrot (Amazona aestiva) in the dry Chaco forest
title_fullStr Reproductive parameters of the turquoise-fronted parrot (Amazona aestiva) in the dry Chaco forest
title_full_unstemmed Reproductive parameters of the turquoise-fronted parrot (Amazona aestiva) in the dry Chaco forest
title_sort reproductive parameters of the turquoise-fronted parrot (amazona aestiva) in the dry chaco forest
url http://hdl.handle.net/20.500.12110/paper_17126568_v12_n2_p_Berkunsky
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