Small mammals in the diet of Barn Owls (Tyto furcata) in an urban area in Rio de Janeiro state, Brazil, with a new record of the dwarf mouse opossum (Cryptonanus)
Abstract Several studies emphasize the use of owl pellets in small mammal inventories in natural areas harboring high richness of rare species, but few Brazilian Atlantic forest localities have been surveyed by this method. The present study documents the species composition and abundance of small m...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
2021-05-01
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| Series: | Brazilian Journal of Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842022000100134&tlng=en |
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| author | A. J. Almeida R. R. Ribeiro J. A. Maia-Júnior V. C. Silva I. C. V. Borges P. R. Gonçalves K. S. Rangel H. V. R. Dias A. B. F. R. Godinho |
| author_facet | A. J. Almeida R. R. Ribeiro J. A. Maia-Júnior V. C. Silva I. C. V. Borges P. R. Gonçalves K. S. Rangel H. V. R. Dias A. B. F. R. Godinho |
| author_sort | A. J. Almeida |
| collection | DOAJ |
| description | Abstract Several studies emphasize the use of owl pellets in small mammal inventories in natural areas harboring high richness of rare species, but few Brazilian Atlantic forest localities have been surveyed by this method. The present study documents the species composition and abundance of small mammals in the diet of Tyto furcata in an urban area of the municipality of Campos dos Goytacazes, Rio de Janeiro, Brazil, remarking on a new record of the dwarf mouse opossum genus Cryptonanus in the Atlantic forest. We analyzed 265 pellets regurgitated by a pair of T. furcata from November 2016 to September 2017 found in a nesting box. Analysis of the samples enabled finding a total of 596 individuals of four small mammal species. Mus musculus was predominant among the prey items (98.3%), while the native rodents Necromys lasiurus (1.3%) and Holochilus brasiliensis (0,17%) were much rarer. A single specimen of Cryptonanus sp. was identified among the diet items based on distinctive dental characters. The identification of this genus in the present study represents the second record in the state of Rio de Janeiro, and the sixth in the Atlantic Forest biome, suggesting that this marsupial occupies a wider ecological and biogeographic range. The present study underscores the relevance of owl pellets for small mammal surveys, even in urban and highly disturbed areas. |
| first_indexed | 2024-12-20T19:23:50Z |
| format | Article |
| id | doaj.art-4812f24097ba418fbb0e3e77171f44a1 |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-12-20T19:23:50Z |
| publishDate | 2021-05-01 |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-4812f24097ba418fbb0e3e77171f44a12022-12-21T19:28:55ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-43752021-05-018210.1590/1519-6984.237675Small mammals in the diet of Barn Owls (Tyto furcata) in an urban area in Rio de Janeiro state, Brazil, with a new record of the dwarf mouse opossum (Cryptonanus)A. J. Almeidahttps://orcid.org/0000-0002-5075-8923R. R. Ribeirohttps://orcid.org/0000-0002-8016-5096J. A. Maia-Júniorhttps://orcid.org/0000-0002-9189-6206V. C. Silvahttps://orcid.org/0000-0002-6153-9814I. C. V. Borgeshttps://orcid.org/0000-0002-5579-8158P. R. Gonçalveshttps://orcid.org/0000-0002-4923-2334K. S. Rangelhttps://orcid.org/0000-0001-8771-9277H. V. R. Diashttps://orcid.org/0000-0001-6016-0848A. B. F. R. Godinhohttps://orcid.org/0000-0002-4068-879XAbstract Several studies emphasize the use of owl pellets in small mammal inventories in natural areas harboring high richness of rare species, but few Brazilian Atlantic forest localities have been surveyed by this method. The present study documents the species composition and abundance of small mammals in the diet of Tyto furcata in an urban area of the municipality of Campos dos Goytacazes, Rio de Janeiro, Brazil, remarking on a new record of the dwarf mouse opossum genus Cryptonanus in the Atlantic forest. We analyzed 265 pellets regurgitated by a pair of T. furcata from November 2016 to September 2017 found in a nesting box. Analysis of the samples enabled finding a total of 596 individuals of four small mammal species. Mus musculus was predominant among the prey items (98.3%), while the native rodents Necromys lasiurus (1.3%) and Holochilus brasiliensis (0,17%) were much rarer. A single specimen of Cryptonanus sp. was identified among the diet items based on distinctive dental characters. The identification of this genus in the present study represents the second record in the state of Rio de Janeiro, and the sixth in the Atlantic Forest biome, suggesting that this marsupial occupies a wider ecological and biogeographic range. The present study underscores the relevance of owl pellets for small mammal surveys, even in urban and highly disturbed areas.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842022000100134&tlng=enmammalsCryptonanusAtlantic Forest |
| spellingShingle | A. J. Almeida R. R. Ribeiro J. A. Maia-Júnior V. C. Silva I. C. V. Borges P. R. Gonçalves K. S. Rangel H. V. R. Dias A. B. F. R. Godinho Small mammals in the diet of Barn Owls (Tyto furcata) in an urban area in Rio de Janeiro state, Brazil, with a new record of the dwarf mouse opossum (Cryptonanus) Brazilian Journal of Biology mammals Cryptonanus Atlantic Forest |
| title | Small mammals in the diet of Barn Owls (Tyto furcata) in an urban area in Rio de Janeiro state, Brazil, with a new record of the dwarf mouse opossum (Cryptonanus) |
| title_full | Small mammals in the diet of Barn Owls (Tyto furcata) in an urban area in Rio de Janeiro state, Brazil, with a new record of the dwarf mouse opossum (Cryptonanus) |
| title_fullStr | Small mammals in the diet of Barn Owls (Tyto furcata) in an urban area in Rio de Janeiro state, Brazil, with a new record of the dwarf mouse opossum (Cryptonanus) |
| title_full_unstemmed | Small mammals in the diet of Barn Owls (Tyto furcata) in an urban area in Rio de Janeiro state, Brazil, with a new record of the dwarf mouse opossum (Cryptonanus) |
| title_short | Small mammals in the diet of Barn Owls (Tyto furcata) in an urban area in Rio de Janeiro state, Brazil, with a new record of the dwarf mouse opossum (Cryptonanus) |
| title_sort | small mammals in the diet of barn owls tyto furcata in an urban area in rio de janeiro state brazil with a new record of the dwarf mouse opossum cryptonanus |
| topic | mammals Cryptonanus Atlantic Forest |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842022000100134&tlng=en |
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