Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/15371
Title: Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
Authors: Barthem, Ronaldo Borges
Goulding, Michael
Leite, Rosseval Galdino
Cañas, Carlos M.
Forsberg, Bruce Rider
Venticinque, Eduardo Martins
Petry, Paulo
Ribeiro, Mauro Lde B.
Chuctaya, Junior A.
Mercado, Armando
Keywords: Adolescent
Adult
Behavior, Animals
Catfish
Chemistry
Dna Flanking Region
Freshwater Fish
Gonad
Human
Human Experiment
Juvenile
Larva
Life History
Nonhuman
Otolith
Spawning
Species
Statistical Analysis
Age
Animals
Geography
Larva
Population Dynamics
Population Migration
Season
Age Factors
Animals Migration
Animal
Catfishes
Geography
Larva
Population Dynamics
Seasons
Issue Date: 2017
metadata.dc.publisher.journal: Scientific Reports
metadata.dc.relation.ispartof: Volume 7
Abstract: We mapped the inferred long-distance migrations of four species of Amazonian goliath catfishes (Brachyplatystoma rousseauxii, B. platynemum, B. juruense and B. vaillantii) based on the presence of individuals with mature gonads and conducted statistical analysis of the expected long-distance downstream migrations of their larvae and juveniles. By linking the distribution of larval, juvenile and mature adult size classes across the Amazon, the results showed: (i) that the main spawning regions of these goliath catfish species are in the western Amazon; (ii) at least three species - B. rousseauxii, B. platynemum, and B. juruense - spawn partially or mainly as far upstream as the Andes; (iii) the main spawning area of B. rousseauxii is in or near the Andes; and (iv) the life history migration distances of B. rousseauxii are the longest strictly freshwater fish migrations in the world. These results provide an empirical baseline for tagging experiments, life histories extrapolated from otolith microchemistry interpretations and other methods to establish goliath catfish migratory routes, their seasonal timing and possible return (homing) to western headwater tributaries where they were born. © The Author(s) 2017.
metadata.dc.identifier.doi: 10.1038/srep41784
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