Abstract
The Neotropic Cormorant Nannopterum brasilianus (Gmelin, 1789) is one of the most common and abundant species in Brazil’s aquatic environments, but little is known about its natural history. This study elaborates and quantitatively evaluates the ethogram and seasonal abundance of this species at Lake Açu, in Rio de Janeiro, Brazil. Between August 2013 and July 2014, behaviors were registered by the ad libitum sampling method and quantified by the continuous recording during 30-min sessions. The mean number of sighted individuals per month was 30.41 ± 4.79. Abundance was higher during the dry season (41.5 ± 5.36) compared to the rainy season (19.33 ± 4.81) (t = 3.07, P = 0.01). A total of 42 behaviors were described and grouped into five behavioral categories: maintenance (83.59%), ingestion/excretion (10.67%), locomotion (3.48%), play (1.65%), and agonistic behavior (0.61%). The time spent in these categories did not vary significantly between the morning and afternoon periods. This study can be used as a starting point for further ethological studies on the species.
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Alarcón P.A.E., Macchi P.J., Trejo A. & Alonso M.F. 2012. Diet of the Neotropical Cormorant (Phalacrocorax brasilianus) in a Patagonian freshwater environment invaded by exotic fish. Waterbirds 35: 149–153.
Altmann J. 1974. Observational study of behavior: sampling methods. Behaviour 49: 227–267.
Alvares C.A., Stape J.L., Sentelhas P.C., Gonçalves J.L.M. & Sparovek G. 2013. Köppen’s climate classification map for Brazil. Meteorologische Zeitschrift 22: 711–728.
Alves V.S., Soares A.B.A., Couto G.S. & Draghi J. 2011. Padrão de ocorrência e distribuição de Biguás Phalacrocorax brasilianus na Baía de Guanabara, Rio de Janeiro, Brasil. Revista Brasileira de Ornitologia 19: 469–477.
Barquete V., Vooren C.M. & Bugoni L. 2008. Seasonal abundance of the Neotropic Cormorant Phalacrocorax brasilianus at Lagoa dos Patos Estuary, southern Brazil. Hornero 23: 15–22.
Bartholomew G.A., Lasiewski R.C. & Crawford-Jr. E.C. 1968. Patterns of panting and gular flutter in cormorants, pelicans, owls, and doves. Condor 70: 31–34.
Bernstein N.P. & Maxson S.J. 1982. Absence of wing-spreading behaviour in the Antarctic Blue-eyed Shag (Phalacrocorax atriceps bransfieldensis). Auk 99: 588–589.
Berry H.H. 1976. Physiological and behavioural ecology of the Cape Cormorant Phalacrocorax capensis–Part 1. Madoqua 9: 5–30.
Bó N.A. 1956. Observaciones morfológicas y etológicas sobre el Biguá. Hornero 10: 147–157.
Branco J.O. 2002. Flutuações sazonais na abundância de Phalacrocorax brasilianus (Gmelin) no estuário do Saco da Fazenda, Itajaí, Santa Catarina, Brasil. Revista Brasileira de Zoologia 19: 1057–1062.
Branco J.O., Evangelista C.L., Lunardon-Branco M.J., Azevedo-Júnior S.M. & Larrazábal M.E. 2009. Atividade diária de Phalacrocorax brasilianus (Aves, Phalacrocoracidae), na região do Saco da Fazenda, Itajaí, SC, Brasil. Ornithologia 3: 73–82.
Casaux R., Ramón A., Tartara M.A., Borrell V. & Gonc R. 2012. Diet of breeding Neotropic Cormorants at the Carrileufu River, Patagonia: is there any impact on recreational fish resources? Ardeola 59: 279–289.
Childress R.B. & Bennun L.A. 2002. Sexual character intensity and its relationship to breeding timing, fecundity and mate choice in the Great Cormorant Phalacrocorax carbo lucidus. Journal of Avian Biology 33: 23–30.
Chiquieri A., Soler M.F., Cassano M.L., Braz M.M. & Castro O. 1995. Vestibular. Rumos 10: 7–28.
Clark-Jr. G.A. 1969. Spread-wing postures in Pelecaniformes, Ciconiiformes, and Falconiformes. Auk 86: 136–139.
Cook T.R. & Leblanc G. 2007. Why is wing-spreading behaviour absent in Blue-eyed Shags? Animal Behaviour 74: 649–652.
D’Angelo G.B. & Sazima I. 2013. Commensal association of piscivorous birds with foraging otters in southeastern Brazil, and a comparison with such a relationship of piscivorous birds with cormorants. Journal of Natural History 48: 241–249.
Espinoza-Rodríguez N., Carrasquero J., Turris-Morales K., Delgado-Ortega G. & Barrios-Garrido H. 2015. Asociaciones entre aves marinas y Sotalia guianensis en el sur del Golfo de Venezuela. Caldasia 37: 309–318.
Ferreira I., Ventura P.E.C. & Luz H.R. 2010. Aves no campus da Universidade Federal Rural do Rio de Janeiro. Rio de Janeiro: Edur.
Galván I. 2004. Age-related spatial segregation of Great Cormorants in a roost. Waterbirds 27: 377–381.
Gheler-Costa C., Comin F.H., Gilli L.C. & Verdade L.M. 2018. Foraging behavior of Brazilian Cormorant, Nannopterum brasilianus (Suliformes: Phalacrocoracidae). Zoologia 35: e14664.
Gokula V. 2011. An ethogram of Spot-billed Pelican (Pelecanus philippensis). Chinese Birds 2: 183–192.
Gwiazda R. 2000. Numbers of non-breeding cormorants and their time budget activity at eutrophic, sub-mountain reservoir in southern Poland. Cormorant Research Group Bulletin 4: 26–28.
Hammer Ø., Harper D.A.T. & Ryan P.D. 2001. PAST: Paleontological Statistics Software Package for Education and Data Analysis. Palaeontologia Electronica 4: 9.
Jones P.J. 1978. A possible function of “wing-drying” posture in the Reed Cormorant Phalacrocorax africanus. Ibis 120: 540–542.
Kennedy M. & Spencer H.G. 2014. Classification of the Cormorants of the world. Molecular Phylogenetics and Evolution 79: 249–257.
Kennedy M., Spencer H.G. & Gray R.D. 1996. Hop, step and gape: do the social displays of the Pelecaniformes reflect phylogeny? Animal Behaviour 51: 273–291.
King D.T., Glahn J.F. & Andrews K.J. 1995. Daily activity budgets and movements of winter roosting Double-crested Cormorants determined by biotelemetry in the delta region of Mississippi. Colonial Waterbirds 18: 152–157.
Nelson J.B. 2005. Pelicans, cormorants, and their relatives: the Pelecaniformes. New York: Oxford University Press.
Oliveira T.C.G. & Costa L.C.M. 2003. Frequencies of the motion patterns in the maintenance and agonistic activities of the Phalacrocorax brasilianus in the marine and river environments in the state of Paraná, Brazil. Cormorant Research Group Bulletin 5: 45–49.
Prestes N.P. 2000. Descrição e análise quantitativa do etograma de Amazona pretrei em cativeiro. Ararajuba 8: 25–42.
Quintana F., Yorio P., Lisnizer N., Gatto A. & Soria G. 2004. Diving behavior and foraging areas of the Neotropic Cormorant at a marine colony in Patagonia, Argentina. Wilson Bulletin 116: 83–88.
Sakamoto K.Q., Sato K., Ishizuka M., Watanuki Y., Takahashi A., Daunt F. & Wanless S. 2009. Can ethograms be automatically generated using body acceleration data from free-ranging birds? PLoS ONE 4: e5379.
Santos M.C.O., Oshima J.E.F., Pacifico E.S. & Silva E. 2010. Feeding associations between Guiana Dolphins, Sotalia guianensis (van Bénèden, 1864) and seabirds in the Lagamar Estuary, Brazil. Brazilian Journal of Biology 70: 9–17.
Sazima I. 2008. Playful birds: cormorants and herons play with objects and practice their skills. Biota Neotropica 8: 259–264.
Schleidt W.M., Yakalis G., Donnelly M. & McGarry J. 1984. A proposal for a standard ethogram, exemplified by an ethogram of the Bluebreasted Quail (Coturnix chinensis). Zeitschrift für Tierpsychologie 64: 193–220.
Sick H. 1997. Ornitologia brasileira. Rio de Janeiro: Nova Fronteira.
Sigrist T. 2009. Guia de campo Avis Brasilis: avifauna brasileira. São Paulo: Avis Brasilis.
Silva E.F., Naif R.H., Barata F.D.B., Santos-Jr. L.S., França P.F. & Campos C.E.C. 2014. Abundância sazonal de Phalacrocorax brasilianus (Gmelin, 1789) (Aves, Phalacrocoracidae) na porção norte da Bacia Amazônica, Macapá, Amapá, Brasil. Biota Amazônia 4: 64–67.
van Tets G.F. 1965. A comparative study of some social communication patterns in the Pelecaniformes. Ornithological Monographs 2: 1–88.
White C.R., Martin G.R. & Butler P.J. 2008. Wing-spreading, wingdrying and food-warming in Great Cormorants Phalacrocorax carbo. Journal of Avian Biology 39: 576–578.
Yamamoto M.E. & Volpato G.L. 2011. Comportamento animal. Natal: Editora da UFRN.
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da Silva, T.L., Cabral, R.B.G. & Ferreira, I. Behavior and seasonal abundance of Neotropic Cormorant Nannopterum brasilianus (Gmelin, 1789) in southeastern, Brazil. Rev. Bras. Ornitol. 26, 219–226 (2018). https://doi.org/10.1007/BF03544434
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DOI: https://doi.org/10.1007/BF03544434