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      Spawning and parental care in Hoplias malabaricus (Teleostei, Characiformes, Erythrinidae) in the Southern Pantanal, Brazil Translated title: Desova e cuidado parental em Hoplias malabaricus (Teleostei, Characiformes, Erythrinidae) no Pantanal Sul, Brasil

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          Abstract

          Herein we describe spawning and egg guarding in the erythrinid fish Hoplias malabaricus observed in the southern Pantanal (19° 34' S and 57° 00' W), state of Mato Grosso do Sul, Brazil. Nests were depressions built on sandy soil in flooded areas, and contained a mean of 8,197 ± 2,204 eggs (N = 4); the mean diameter of eggs was 1.44 ± 0.09 mm (N = 400). Among 11 nests observed, eight were guarded by males and three by the pair. One male remained in the nest for six days, and two pairs remained guarding the eggs for at least three days before being captured. Females (N = 2) captured in the nest contained oocytes in their ovaries. Our observations suggest that male parental care is the normal form of parental care in H. malabaricus, but biparental care also seems to occur.

          Translated abstract

          No presente estudo, descrevemos os comportamentos de desova e cuidado parental para um membro da referida família, Hoplias malabaricus, os quais foram observados no Pantanal sul (19° 34' S e 57° 00' W), Estado de Mato Grosso do Sul, Brasil. As desovas foram observadas no início da cheia, depositadas em ninhos construídos em substrato arenoso em áreas alagadas. As desovas continham, em média, 8.197 ± 2.204 ovos (N = 4); o diâmetro médio dos ovos foi de 1,44 ± 0,09 mm (N = 400). Entre 11 ninhos observados, oito foram guardados por machos e em três observamos o casal. Um macho permaneceu no ninho por seis dias, e dois casais foram observados por três dias no ninho até serem capturados. As fêmeas (N = 2) capturadas nos ninhos continham óvulos nos ovários. O cuidado parental em Hoplias malabaricus é normalmente exercido pelos machos, mas nossas observações sugerem que o cuidado biparental pode ocorrer de forma facultativa.

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          Most cited references30

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          Observational study of behavior: sampling methods.

          J Altmann (1974)
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            The Evolution of Parental Care

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              Male Parental Care in the Bony Fishes

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                bjb
                Brazilian Journal of Biology
                Braz. J. Biol.
                Instituto Internacional de Ecologia (São Carlos )
                1678-4375
                May 2006
                : 66
                : 2b
                : 697-702
                Affiliations
                [1 ] Universidade Estadual Paulista Brazil
                [2 ] Universidade Federal de Mato Grosso do Sul Brazil
                Article
                S1519-69842006000400013
                10.1590/S1519-69842006000400013
                b1075abe-220e-472f-9f06-68c96fe157f7

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1519-6984&lng=en
                Categories
                BIOLOGY

                General life sciences
                Erythrinidae,Pantanal,reproduction,parental care,Hoplias malabaricus,reprodução,cuidado parental

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