Biology Reference
In-Depth Information
Chapter 15
P
OPULATION
S
TRUCTURE AND
P
HYLOGEOGRAPHY
OF
T
UCUXI
D
OLPHINS
(
S
OTALIA
F
LUVIATILIS
)
Susana Caballero
1,2
, Fernando Trujillo
2
, Manuel Ruiz-García
3
,
Julianna A. Vianna
4,5
, Miriam Marmontel
6
,
Fabricio R. Santos
4
and C. Scott Baker
1, 7
1
Laboratory of Molecular Ecology and Evolution, School of Biological Sciences, The
University of Auckland, Auckland, New Zealand.
2
Fundación Omacha, Bogotá, Colombia
3
Unidad de Genética (Genética de Poblaciones-Biología Evolutiva), Departamento de
Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
4
Laboratório de Biodiversidade e Evolução Molecular, Departamento de Biologia Geral,
ICB, Universidade Federal de Minas Gerais, Av. Antonio Carlos, MG, Brazil
5
Universidad Andrés Bello, Facultad Ecología y Recursos Naturales, Escuela de
Medicina Veterinaria, Laboratorio Salud de Ecosistemas, República 252, Santiago, Chile.
6
Instituto de Desenvolvimento Sustentável Mamirauá, Rua Augusto Correa No.1 Campus
do Guamá, Setor Professional, Guamá, Brazil.
7
Marine Mammal Institute and Department of Fisheries and Wildlife, Hatfield Marine
Science Center, Oregon State University, Newport, OR, USA
A
BSTRACT
Here we consider the phylogeography and population structure of the tucuxi dolphin
Sotalia fluviatilis
, based on samples (n = 26) collected across the Peruvian, Colombian
and Brazilian Amazon Regions. Fourteen control region (CR) and two cytochrome
b
(Cyt-
b
) haplotypes were identified among these samples. The Amazonian population
units identified showed high mitochondrial haplotype diversity and relatively high female
mediated gene flow when compared to
Sotalia guianensis
and another Amazonian
dolphin species,
Inia geoffrensis
throughout the sampled regions of the main river and its
tributaries. A Union of Maximum Parsimonious Trees analysis generated a CR haplotype
s.caballero@auckland.ac.nz
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