DESCRIÇÃO DAS LARVAS DE Psectrogaster amazonica E Potamorhina altamazonica (CURIMATIDAE, PISCES) DA AMAZONIA CENTRAL

Nascimento, F. L.; Araújo-Lima, Carlos A. R. M.

doi:10.1590/1809-43921993234472

Cited by 20 publications

(13 citation statements)

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“…A similar sequence was observed in cascudinha (Psectrogaster amazônica) and branquinha de cabeça lisa (Potamorhina altamazonica) by Nascimento & Araújo-Lima (1993), peixe canivete (Apareiodon affinis) by Bialetzki et al (1998), piau-três-pintas (Leporinus friderici) by Sanches et al (2001), and pequira (Bryconamericus atramineus) by Galuch et al (2003).…”

Section: Resultssupporting

confidence: 64%

Morphological and behavioral development of the piracanjuba larvae

et al. 2010

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-The objective of this work was to study the morphologic development and the swimming and feeding behaviors of piracanjuba larvae, Brycon orbignyanus Valenciennes (1849) (Characiformes, Characidae, Bryconinae), during the period from zero to 172 hours after hatching (standard length = 3.62 -11.94 mm). The morphological analyses were accomplished by using a trinocular stereo microscope, while the behavioral analyses were performed through periodic observations. In 28 hours after hatching, the larvae (standard length = 6.25 ± 0.13 mm) showed the following structural and behavioral characteristics that made them become active predators able to overcome a larval critical phase, the beginning of exogenous feeding: presence of pigmented eyes, terminal and wide mouth, developed oral dentition, developing digestive tube, yolk sac reduction, fins and swim bladder formation, horizontal swimming, cannibalism, and predation.Intense cannibalism among larvae was verified from 26 to 72 hours. At the end of the metamorphosis -172 hours after hatching -the larvae measuring 11.94 + 0.80 mm in standard length presented a flexed notochord, caudal fin bifurcation, dorsal and anal fin formation, synchronized movements, and formation of shoals, characteristics that together allow enhanced perception and locomotio in exploration of the environment, determining the best moment for transfering to the fishponds. New studies can contribute to commercial fish farming by improving feeding management, performance, survival, and productivity of this species.Key Words: behavior, Brycon orbignyanus, Characiformes, first feeding, morphology, ontogenyDesenvolvimento morfológico e comportamental de larvas de piracanjuba RESUMO -Objetivou-se estudar o desenvolvimento morfológico e os comportamentos natatório e alimentar de larvas de piracanjuba, Brycon orbignyanus Valenciennes (1849) (Characiformes, Characidae, Bryconinae) no período de 0 a 172 horas após a eclosão (comprimento-padrão = 3,62 -11,94 mm). As análises morfológicas foram realizadas com auxílio de um microscópio estereoscópico trinocular e as comportamentais, por meio de observações periódicas. Com 28 horas após a eclosão, as larvas (6,25 ± 0,13 mm) apresentaram características estruturais e comportamentais que as tornavam predadoras ativas, capazes de superar a etapa crítica da fase larval, o início da alimentação exógena: presença de olhos pigmentados, boca terminal e ampla, dentes desenvolvidos, tubo digestivo em desenvolvimento, saco vitelino em redução, nadadeiras e bexiga gasosa em formação, nado horizontal, canibalismo e predação. Canibalismo intenso entre as larvas foi verificado das 26 às 72 horas. No final da metamorfose, às 172 horas pós-eclosão, medindo 11, 94 + 0,80 mm de comprimento padrão, as larvas apresentaram notocorda flexionada, nadadeira caudal em bifurcação e nadadeiras dorsal e anal em formação, movimentos sincronizados e formação de cardumes, características que, em conjunto, permitem melhor percepção e locomoção na exploração do ambiente e determinam o m...

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Section: Resultssupporting

confidence: 64%

Morphological and behavioral development of the piracanjuba larvae

et al. 2010

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“…(2004), Atencio‐García (2005), Contreras & Contreras (1989), Nakatani et al. (2001), López & López (2005), Nascimento & Araujo‐Lima (1993), Novoa & Cataño (2005) and Padilla et al. (2001) were used to identify larvae genus and species.…”

Section: Methodsmentioning

confidence: 99%

River flooding and reproduction of migratory fish species in the Magdalena River basin, Colombia

Jiménez‐Segura

Palacio

Leite

2010

Ecology of Freshwater Fish

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In most tropical rivers subject to a single-yearly flooding, migratory fish usually spawn in the onset of the flooding and larvae drift to their nursery habitats. To define when the migratory fish species reproduce, its relationship with the water level and when nursery areas in floodplain lakes are supplied with ichthyoplankton in the Magdalena River, a twoyearly peak flooding river, we sampled the ichthyoplankton weekly throughout 2 years. The fish species Pseudoplatystoma magdaleniatum, Prochilodus magdalenae, Leporinus muyscorum, Sorubim cuspicaudus and Curimata mivartii spawn twice a year in the main channel and its larvae input into the floodplain lakes are not always associated with flooding. Spawning in the main channel and larvae inputs into the floodplain lakes suggest that the habitat used by the migratory fishes may be consistent with some hypotheses on habitats used by these fishes.

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“…This type of chromatophore has also been described in other characiform larvae (ARAlJJO-LiMA et at. 1993;NASCIMENTO & ARAUJO-LIMA 1993;SANTOS & GODINHO 1996a,b) and in other fish groups (SANTOS & GODINHO 1994).…”

Section: Chromatophore Morphologymentioning

confidence: 96%

Ontogenic events and swimming behavior of larvae of the characid fish Salminus brasiliensis (Cuvier) (Characiformes, Characidae) under laboratory conditions

Santos

Godinho

2002

Rev. Bras. Zool.

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ABSTRACT. The larval ontogeny and swimming behavior of the characid fish Sa/minus brasiliensis (Cuvier, 1816) were studied under experimental laboratory conditions, from hatching to yolk absorption . At day I, the larvae were transparent, with sparse dendrite chromatophores and a well -developed adhesive organ on the head. The retinal epithelial cells were initiating pigmentation. The branchial arches were at the initial phase of differentiation. The larvae were able to perform only vertical displacements and, when resting on the tank bottom, remained in lateral decumbency, in groups of 3 to 15 larvae. On day 2, the mouth was open, with conical teeth, and the digestive tube presented lumen and folded mucosa. The gaseous bladder and pectoral fins also were in differentiation. The larvae performed vertical and horizontal movements, adhered to the water surface by means of the adhesi ve organ or formed groups of three to six on the tank bottom. On day 3, the adhesive organ turned dorsal, the retina was pigmented, the digestive tube mucosa showed goblet cells, and the yolk sac exhausted. The larvae were now scattering in the water column forming no groups on the bottom. KEY WORDS. Sa/minlls brasiliensis, larval ontogenic events, larval swimming behavior Knowledge on larval development of freshwater teleost is limited (SOUSA

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DESCRIÇÃO DAS LARVAS DE Psectrogaster amazonica E Potamorhina altamazonica (CURIMATIDAE, PISCES) DA AMAZONIA CENTRAL

Cited by 20 publications

References 1 publication

Morphological and behavioral development of the piracanjuba larvae

Morphological and behavioral development of the piracanjuba larvae

River flooding and reproduction of migratory fish species in the Magdalena River basin, Colombia

Ontogenic events and swimming behavior of larvae of the characid fish Salminus brasiliensis (Cuvier) (Characiformes, Characidae) under laboratory conditions

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