title: Analysis of an astounding aggregation of Ranzania laevis (Molidae: Actinopterygii) in the tropical south-western Atlantic.
abstract: Unusual catches of more than 4200 kg of the slender sunfish Ranzania laevis are described from the south-western Atlantic, corresponding to the largest aggregation records for the species. These unexpected records were associated with unusually warm currents in the area. Males and females were physiologically able to spawn at the moment of capture, suggesting the occurrence of reproductive aggregation in this species.
authors: Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Ecologia, Av. Bento Gonçalves n° 9500, Bloco IV, Prédio 43422, Sala 102, Porto Alegre, RS 91501-970, Brazil.
authors: T S
authors: TS
authors: Horn
authors: Grupo de Estudos de Mamíferos Aquáticos do Rio Grande do Sul, Rua Machado de Assis, n° 1456, Osório, RS 95520-000, Brazil.|Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Animal, Av. Bento Gonçalves n° 9500, Bloco IV, Prédio 43435, Sala 219, Porto Alegre, RS 91501-970, Brazil.
authors: R
authors: R
authors: Machado
authors: Doctorate Fellowship - CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil) in Coastal Engineering, Hydrobiology and Management of Water Systems (IH2O - Universidad de Cantabria) and Environmental Hydraulics Institute, Parque Científico y Tecnológico de Cantabria, Santander, Spain.
authors: C V C
authors: CV
authors: Weiss
authors: Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Animal, Av. Bento Gonçalves n° 9500, Bloco IV, Prédio 43435, Sala 219, Porto Alegre, RS 91501-970, Brazil.
authors: J
authors: J
authors: Giora
authors: Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Animal, Av. Bento Gonçalves n° 9500, Bloco IV, Prédio 43435, Sala 219, Porto Alegre, RS 91501-970, Brazil. malabarb@ufrgs.br.
authors: L R
authors: LR
authors: Malabarba
mesh_terms: D000818:Animals; D001267:Atlantic Ocean; D001522:Behavior, Animal; D005260:Female; D006358:Hot Temperature; D008297:Male; D010053:Ovary / Q000166:cytology; D012098:Reproduction; D013737:Testis / Q000166:cytology; D023721:Tetraodontiformes / Q000033:anatomy & histology
keywords: ovary and testes histology; reproductive aggregation; slender sunfish; warming process