2007
DOI: 10.1590/s1519-69842007000100022
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Abstract: The species, Pterophyllum scalare distinguishes itself by its breeding behavior, involving competition for territory, sexual partners, courtship and parental care. The purpose of this study was to identify the mating system adopted by this species of fish. Twenty males and twenty females were observed under semi-natural and experimental conditions to test the hypothesis of serial monogamy. Under semi-natural conditions, after the third breeding cycle, the couples changed mates. Under experimental conditions, t… Show more

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Cited by 18 publications
(16 citation statements)
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References 11 publications
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“…They are native to the Amazon basin, and they prefer to live among dense vegetation in clear, still waters at river margins (Cacho et al 2007). They naturally feed on invertebrates and are eaten by piscivores, although the natural predatory species are not known (El Balaa and Blouin-Demers 2011).…”
Section: Methods Fishmentioning
confidence: 99%
“…They are native to the Amazon basin, and they prefer to live among dense vegetation in clear, still waters at river margins (Cacho et al 2007). They naturally feed on invertebrates and are eaten by piscivores, although the natural predatory species are not known (El Balaa and Blouin-Demers 2011).…”
Section: Methods Fishmentioning
confidence: 99%
“…O sistema reprodutivo seminatural pode ter influenciado na preservação da variabilidade genética da progênie, já que esse sistema reduz a seleção não intencional no processo reprodutivo que ocorre normalmente no sistema reprodutivo por extrusão (POVH, 2007) e diminui significativamente a mortalidade causada pelo estresse. Isto permite que um maior número de reprodutores se reproduza durante os cruzamentos e que exista sincronização natural na liberação dos gametas, permitindo que o pool genético de um estoque pequeno ou de um cruzamento com poucos indivíduos (como é normalmente utilizado em programas de repovoamento) seja representado com maior heterogeneidade na progênie (CACHO;YAMAMOTO;CHELLAPPA, 2007, REYNALTE-TATAJE et al, 2002, devido ao menor efeito seletivo do sistema e à maior taxa de sobrevivência dos reprodutores, o que pode viabilizar a preservação da variabilidade genética na progênie.…”
Section: Sistema Reprodutivo Seminaturalunclassified
“…Brazil has about 81 species of cichlids which correspond to 6% of total freshwater fish species which are considered economically important. They serve as food for the local population and also have potential for intensive, extensive, and ornamental fish culture [ 3 – 5 ].…”
Section: Introductionmentioning
confidence: 99%