15
© Springer International Publishing AG 2018
M.R. Rossi-Santos, C.W. Finkl (eds.), Advances in Marine Vertebrate Research
in Latin America, Coastal Research Library 22,
DOI 10.1007/978-3-319-56985-7_2
Chapter 2
Long-Term Monitoring of Dolphins in a Large
Estuarine System of Southeastern Brazil
Emygdio L.A. Monteiro-Filho, Lucimary S. Deconto, Caio N. Louzada,
Rebeca P. Wanderley, Daniela F. Godoy, and Eric Medeiros
Abstract Considering long-term study as one that through constant efforts subsidizes future studies, an example in Brazil is “Projeto Boto-Cinza” adding up more
than 36 continued years of research and data application on Guiana dolphin biology,
ecology and conservation. The first effort we dedicated was toward understand the
fishing strategies used by this species, lasting about 10 years. Latter, as we gained
knowledge in behavior study, the next step was to access parental care, youngling
behavior, learning process of fishing, acoustic repertoire, and recently social networks. Throughout this time, it was possible to access also the mortality, and based
on carcasses that gave such information, access parameters of life history such as
reproductive anatomy of males and females, pregnancy period, birth size, and even
age. Population density estimates could be done in different periods and areas;
photo-identification enabled the detection of individual spatial fidelity. Modeling
permitted to observe which parameters seem to be associated with the spatial distribution of population units inside the estuary. All these data contributed to a greater
knowledge about the species, creation of public policies by conservation units’
chiefs, education purposes, and conservation of the species.
E.L.A. Monteiro-Filho (*)
Department of Zoology, Centro Politécnico, Universidade Federal do Paraná,
Caixa postal 19020, 81.531-980, Curitiba, PR, Brazil
Instituto de Pesquisas Cananéia,
Rua Tristão Lobo, 199, Centro, 11.990-000, Cananéia, SP, Brazil
e-mail: kamonteiro@uol.com.br; elamf@ufpr.br
L.S. Deconto • C.N. Louzada
Programa de Pós-Graduação em Zoologia, Departamento de Zoologia, Centro Politécnico,
Universidade Federal do Paraná, Caixa postal 19020, 81.531-980, Curitiba, PR, Brazil
Instituto de Pesquisas Cananéia,
Rua Tristão Lobo, 199, Centro, 11.990-000, Cananéia, SP, Brazil
R.P. Wanderley • D.F. Godoy • E. Medeiros
Instituto de Pesquisas Cananéia,
Rua Tristão Lobo, 199, Centro, 11.990-000, Cananéia, SP, Brazil
© Springer International Publishing AG 2018
M.R. Rossi-Santos, C.W. Finkl (eds.), Advances in Marine Vertebrate Research
in Latin America, Coastal Research Library 22,
DOI 10.1007/978-3-319-56985-7_2
Chapter 2
Long-Term Monitoring of Dolphins in a Large
Estuarine System of Southeastern Brazil
Emygdio L.A. Monteiro-Filho, Lucimary S. Deconto, Caio N. Louzada,
Rebeca P. Wanderley, Daniela F. Godoy, and Eric Medeiros
Abstract Considering long-term study as one that through constant efforts subsidizes future studies, an example in Brazil is “Projeto Boto-Cinza” adding up more
than 36 continued years of research and data application on Guiana dolphin biology,
ecology and conservation. The first effort we dedicated was toward understand the
fishing strategies used by this species, lasting about 10 years. Latter, as we gained
knowledge in behavior study, the next step was to access parental care, youngling
behavior, learning process of fishing, acoustic repertoire, and recently social networks. Throughout this time, it was possible to access also the mortality, and based
on carcasses that gave such information, access parameters of life history such as
reproductive anatomy of males and females, pregnancy period, birth size, and even
age. Population density estimates could be done in different periods and areas;
photo-identification enabled the detection of individual spatial fidelity. Modeling
permitted to observe which parameters seem to be associated with the spatial distribution of population units inside the estuary. All these data contributed to a greater
knowledge about the species, creation of public policies by conservation units’
chiefs, education purposes, and conservation of the species.
E.L.A. Monteiro-Filho (*)
Department of Zoology, Centro Politécnico, Universidade Federal do Paraná,
Caixa postal 19020, 81.531-980, Curitiba, PR, Brazil
Instituto de Pesquisas Cananéia,
Rua Tristão Lobo, 199, Centro, 11.990-000, Cananéia, SP, Brazil
e-mail: kamonteiro@uol.com.br; elamf@ufpr.br
L.S. Deconto • C.N. Louzada
Programa de Pós-Graduação em Zoologia, Departamento de Zoologia, Centro Politécnico,
Universidade Federal do Paraná, Caixa postal 19020, 81.531-980, Curitiba, PR, Brazil
Instituto de Pesquisas Cananéia,
Rua Tristão Lobo, 199, Centro, 11.990-000, Cananéia, SP, Brazil
R.P. Wanderley • D.F. Godoy • E. Medeiros
Instituto de Pesquisas Cananéia,
Rua Tristão Lobo, 199, Centro, 11.990-000, Cananéia, SP, Brazil