The Influence of Intrinsic Factors and Release Trials on Site Fidelity and Dispersal of Reintroduced Golden Parakeets (<i>Guaruba guarouba</i>, Aves, Psittacidae)
Reintroducing threatened fauna has been established as a valuable conservation practice despite the obstacles that such projects still face. In avian reintroductions, elevated dispersal of released individuals is one of the main factors preventing the establishment of sizeable populations in target...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
|
| Series: | Diversity |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-2818/17/5/364 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849327382202155008 |
|---|---|
| author | Marcelo Rodrigues Vilarta Maria Fernanda Naegeli Gondim Thaís Tamamoto de Moraes Monica Furtado Arnaldo Algaranhar Gonçalves Luís Fábio Silveira |
| author_facet | Marcelo Rodrigues Vilarta Maria Fernanda Naegeli Gondim Thaís Tamamoto de Moraes Monica Furtado Arnaldo Algaranhar Gonçalves Luís Fábio Silveira |
| author_sort | Marcelo Rodrigues Vilarta |
| collection | DOAJ |
| description | Reintroducing threatened fauna has been established as a valuable conservation practice despite the obstacles that such projects still face. In avian reintroductions, elevated dispersal of released individuals is one of the main factors preventing the establishment of sizeable populations in target areas. We started reintroducing Golden Parakeets in a protected area in the Amazon Forest, and we faced problems regarding low site fidelity. To address this issue, we tested a new methodological approach named “release trials”, consisting of repeatedly releasing and recapturing individual birds to avoid early dispersion. We address the results of applying this method and the influence that intrinsic factors had on the site fidelity of released individuals. We released seven groups of parakeets with an average first-month site fidelity of 46%. Individuals who underwent more release trials before the group release were more likely to present site fidelity. The level of aggression suffered by resident parakeets was the main factor leading to the dispersion of individuals. Older birds were more likely to suffer higher aggression, but age alone did not explain the result of dispersion. Individuals less aversive to humans and previously paired before release were less likely to disperse. Our results show that every bit of methodological care during pre-release training and individual selection may increase the chance of establishing a group with site fidelity. |
| format | Article |
| id | doaj-art-64ebfdd59680460fac1bcddda4dc4712 |
| institution | Kabale University |
| issn | 1424-2818 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diversity |
| spelling | doaj-art-64ebfdd59680460fac1bcddda4dc47122025-08-20T03:47:53ZengMDPI AGDiversity1424-28182025-05-0117536410.3390/d17050364The Influence of Intrinsic Factors and Release Trials on Site Fidelity and Dispersal of Reintroduced Golden Parakeets (<i>Guaruba guarouba</i>, Aves, Psittacidae)Marcelo Rodrigues Vilarta0Maria Fernanda Naegeli Gondim1Thaís Tamamoto de Moraes2Monica Furtado3Arnaldo Algaranhar Gonçalves4Luís Fábio Silveira5Seção de Aves, Museu de Zoologia da Universidade de São Paulo, Ipiranga 04263-000, SP, BrazilLymington Foundation, Estrada Dias Gomes 2.200, Juquitiba 06950-970, SP, BrazilLymington Foundation, Estrada Dias Gomes 2.200, Juquitiba 06950-970, SP, BrazilInstituto de Desenvolvimento Florestal e da Biodiversidade do Estado do Pará, IDEFLOR-Bio, Avenida João Paulo II, Utinga, Belém 66610-770, PA, BrazilInstituto de Desenvolvimento Florestal e da Biodiversidade do Estado do Pará, IDEFLOR-Bio, Avenida João Paulo II, Utinga, Belém 66610-770, PA, BrazilSeção de Aves, Museu de Zoologia da Universidade de São Paulo, Ipiranga 04263-000, SP, BrazilReintroducing threatened fauna has been established as a valuable conservation practice despite the obstacles that such projects still face. In avian reintroductions, elevated dispersal of released individuals is one of the main factors preventing the establishment of sizeable populations in target areas. We started reintroducing Golden Parakeets in a protected area in the Amazon Forest, and we faced problems regarding low site fidelity. To address this issue, we tested a new methodological approach named “release trials”, consisting of repeatedly releasing and recapturing individual birds to avoid early dispersion. We address the results of applying this method and the influence that intrinsic factors had on the site fidelity of released individuals. We released seven groups of parakeets with an average first-month site fidelity of 46%. Individuals who underwent more release trials before the group release were more likely to present site fidelity. The level of aggression suffered by resident parakeets was the main factor leading to the dispersion of individuals. Older birds were more likely to suffer higher aggression, but age alone did not explain the result of dispersion. Individuals less aversive to humans and previously paired before release were less likely to disperse. Our results show that every bit of methodological care during pre-release training and individual selection may increase the chance of establishing a group with site fidelity.https://www.mdpi.com/1424-2818/17/5/364soft releasedispersionsite fidelityacclimatization |
| spellingShingle | Marcelo Rodrigues Vilarta Maria Fernanda Naegeli Gondim Thaís Tamamoto de Moraes Monica Furtado Arnaldo Algaranhar Gonçalves Luís Fábio Silveira The Influence of Intrinsic Factors and Release Trials on Site Fidelity and Dispersal of Reintroduced Golden Parakeets (<i>Guaruba guarouba</i>, Aves, Psittacidae) Diversity soft release dispersion site fidelity acclimatization |
| title | The Influence of Intrinsic Factors and Release Trials on Site Fidelity and Dispersal of Reintroduced Golden Parakeets (<i>Guaruba guarouba</i>, Aves, Psittacidae) |
| title_full | The Influence of Intrinsic Factors and Release Trials on Site Fidelity and Dispersal of Reintroduced Golden Parakeets (<i>Guaruba guarouba</i>, Aves, Psittacidae) |
| title_fullStr | The Influence of Intrinsic Factors and Release Trials on Site Fidelity and Dispersal of Reintroduced Golden Parakeets (<i>Guaruba guarouba</i>, Aves, Psittacidae) |
| title_full_unstemmed | The Influence of Intrinsic Factors and Release Trials on Site Fidelity and Dispersal of Reintroduced Golden Parakeets (<i>Guaruba guarouba</i>, Aves, Psittacidae) |
| title_short | The Influence of Intrinsic Factors and Release Trials on Site Fidelity and Dispersal of Reintroduced Golden Parakeets (<i>Guaruba guarouba</i>, Aves, Psittacidae) |
| title_sort | influence of intrinsic factors and release trials on site fidelity and dispersal of reintroduced golden parakeets i guaruba guarouba i aves psittacidae |
| topic | soft release dispersion site fidelity acclimatization |
| url | https://www.mdpi.com/1424-2818/17/5/364 |
| work_keys_str_mv | AT marcelorodriguesvilarta theinfluenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT mariafernandanaegeligondim theinfluenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT thaistamamotodemoraes theinfluenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT monicafurtado theinfluenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT arnaldoalgaranhargoncalves theinfluenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT luisfabiosilveira theinfluenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT marcelorodriguesvilarta influenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT mariafernandanaegeligondim influenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT thaistamamotodemoraes influenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT monicafurtado influenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT arnaldoalgaranhargoncalves influenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae AT luisfabiosilveira influenceofintrinsicfactorsandreleasetrialsonsitefidelityanddispersalofreintroducedgoldenparakeetsiguarubaguaroubaiavespsittacidae |