477
© 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_17
Chapter 17
Behavior and Ecology of Endangered Species
Living Together: Long-Term Monitoring
of Resident Sympatric Dolphin Populations
Marta J. Cremer, Annelise C. Holz, Camila M. Sartori, Beatriz Schulze,
Renan L. Paitach, and Paulo C. Simões-Lopes
Abstract Sympatric species may exploit the same resources, potentially acting as
competitors when resources are limited. For cetaceans, ecological separation
between sympatric species is based on differences in diet and habitat use. The fransiscana dolphin Pontoporia blainvillei (Pontoporiidae) and the Guiana dolphin
Sotalia guianesis (Delphinidae) live in sympatry along the southern and southeastern Brazilian coast, but Babitonga Bay is the only estuarine region in which these
species occur throughout the year and live in direct sympatry. Twenty years of data
on these populations give some indication of how this ecologically similar species
share the same habitat. That coexistence is facilitated through differences in diet,
distribution, and habitat use patterns. The Guiana dolphin is probably dominant in
M.J. Cremer (*) • B. Schulze • R.L. Paitach
Laboratório de Nectologia – Centro de Ciências Biológicas, Universidade da Região de
Joinville (UNIVILLE) – Unidade São Francisco do Sul,
Rodovia Duque de Caxias, 6365, Iperoba, 89240-000 São Francisco do Sul, Santa Catarina,
Brazil
Programa de Pós-Graduação em Ecologia – Centro de Ciências Biológicas, Universidade
Federal de Santa Catarina (UFSC) – Campus Universitário, s/n, Departamento MIP – Córrego
Grande, 88040-970 Florianópolis, Santa Catarina, Brazil
e-mail: mjc2209@yahoo.com.br
A.C. Holz • C.M. Sartori
Laboratório de Nectologia – Centro de Ciências Biológicas, Universidade da Região de
Joinville (UNIVILLE) – Unidade São Francisco do Sul,
Rodovia Duque de Caxias, 6365, Iperoba, 89240-000 São Francisco do Sul, Santa Catarina,
Brazil
P.C. Simões-Lopes
Programa de Pós-Graduação em Ecologia – Centro de Ciências Biológicas, Universidade
Federal de Santa Catarina (UFSC) – Campus Universitário, s/n, Departamento MIP – Córrego
Grande, 88040-970 Florianópolis, Santa Catarina, Brazil
Laboratório de Mamíferos Aquáticos (LAMAQ) – Centro de Ciências Biológicas,
Universidade Federal de Santa Catarina (UFSC) – Campus Universitário, s/n, Departamento
de Ecologia e Zoologia – Córrego Grande, 88040-970 Florianópolis, Santa Catarina, 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_17
Chapter 17
Behavior and Ecology of Endangered Species
Living Together: Long-Term Monitoring
of Resident Sympatric Dolphin Populations
Marta J. Cremer, Annelise C. Holz, Camila M. Sartori, Beatriz Schulze,
Renan L. Paitach, and Paulo C. Simões-Lopes
Abstract Sympatric species may exploit the same resources, potentially acting as
competitors when resources are limited. For cetaceans, ecological separation
between sympatric species is based on differences in diet and habitat use. The fransiscana dolphin Pontoporia blainvillei (Pontoporiidae) and the Guiana dolphin
Sotalia guianesis (Delphinidae) live in sympatry along the southern and southeastern Brazilian coast, but Babitonga Bay is the only estuarine region in which these
species occur throughout the year and live in direct sympatry. Twenty years of data
on these populations give some indication of how this ecologically similar species
share the same habitat. That coexistence is facilitated through differences in diet,
distribution, and habitat use patterns. The Guiana dolphin is probably dominant in
M.J. Cremer (*) • B. Schulze • R.L. Paitach
Laboratório de Nectologia – Centro de Ciências Biológicas, Universidade da Região de
Joinville (UNIVILLE) – Unidade São Francisco do Sul,
Rodovia Duque de Caxias, 6365, Iperoba, 89240-000 São Francisco do Sul, Santa Catarina,
Brazil
Programa de Pós-Graduação em Ecologia – Centro de Ciências Biológicas, Universidade
Federal de Santa Catarina (UFSC) – Campus Universitário, s/n, Departamento MIP – Córrego
Grande, 88040-970 Florianópolis, Santa Catarina, Brazil
e-mail: mjc2209@yahoo.com.br
A.C. Holz • C.M. Sartori
Laboratório de Nectologia – Centro de Ciências Biológicas, Universidade da Região de
Joinville (UNIVILLE) – Unidade São Francisco do Sul,
Rodovia Duque de Caxias, 6365, Iperoba, 89240-000 São Francisco do Sul, Santa Catarina,
Brazil
P.C. Simões-Lopes
Programa de Pós-Graduação em Ecologia – Centro de Ciências Biológicas, Universidade
Federal de Santa Catarina (UFSC) – Campus Universitário, s/n, Departamento MIP – Córrego
Grande, 88040-970 Florianópolis, Santa Catarina, Brazil
Laboratório de Mamíferos Aquáticos (LAMAQ) – Centro de Ciências Biológicas,
Universidade Federal de Santa Catarina (UFSC) – Campus Universitário, s/n, Departamento
de Ecologia e Zoologia – Córrego Grande, 88040-970 Florianópolis, Santa Catarina, Brazil