Determining Management Units in Southeastern Brazil: The Case of Astyanax bimaculatus (Linnaeus, 1758) (Teleostei: Ostariophysi: Characidae)

Determining Management Units in Southeastern Brazil: The Case of Astyanax bimaculatus (Linnaeus, 1758) (Teleostei: Ostariophysi: Characidae)

Characterization, management and protection of biodiversity are the most prominent challenges in conservation biology. Analyses on molecular similarity (Random Amplified Polymorphic DNA-Polymerase Chain Reaction, RAPD-PCR) and morphologic patterns (morphometric and meristic characters) were performe...

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Veröffentlicht in:Hydrobiologia 2006-05, Vol.560 (1), p.393-404
Hauptverfasser: Paiva, Samuel Rezende, Dergam, Jorge Abdala, Machado, Flávia
Format: Artikel
Sprache:eng
Schlagworte:
Agnatha. Pisces
Animal and plant ecology
Animal, plant and microbial ecology
Aquatic ecosystems
Astyanax bimaculatus
basins
Biodiversity
Biological and medical sciences
Characidae
Conservation biology
Fish
Freshwater
Fundamental and applied biological sciences. Psychology
General aspects
genetic variation
interspecific variation
Morphology
morphometry
Ostariophysi
population
random amplified polymorphic DNA technique
River basins
Rivers
Synecology
Teleostei
variance
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
watersheds
wildlife management
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Zusammenfassung:Characterization, management and protection of biodiversity are the most prominent challenges in conservation biology. Analyses on molecular similarity (Random Amplified Polymorphic DNA-Polymerase Chain Reaction, RAPD-PCR) and morphologic patterns (morphometric and meristic characters) were performed to evaluate the existence of population structuring in the Doce river basin, in a widespread small-sized characin, Astyanax bimaculatus. Three hundred (300) individuals were collected from six locations isolated by waterfalls or dams, in the Doce river basin, Minas Gerais State, Brazil. Genetic differentiation among tributaries was significant (p
ISSN:0018-8158
1573-5117
DOI:10.1007/s10750-005-9415-1