Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
| Autor: | Bruce R. Forsberg, Michael Goulding, Paulo Petry, Rosseval Galdino Leite, Armando Mercado, Eduardo Martins Venticinque, Ronaldo Borges Barthem, Junior Chuctaya, Carlos M. Cañas, Mauro César Lambert de Brito Ribeiro |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Life History Amazonian Population Dynamics Juvenile 01 natural sciences Otolith Catfishes Larva Multidisciplinary geography.geographical_feature_category Geography Amazon rainforest Dna Flanking Region Age Factors Behavior Animals Animals Migration Gonad Freshwater Fish Chemistry medicine.anatomical_structure Statistical Analysis Freshwater fish Seasons Human Adult Adolescent Spawning Human Experiment Catfish Biology 010603 evolutionary biology Article Age Population Migration Tributary medicine Animals Species geography Animal 010604 marine biology & hydrobiology Homing (biology) biology.organism_classification Nonhuman Fishery Animal Migration Season |
| Zdroj: | Repositório Institucional do INPA Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA Scientific Reports |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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