Effect of salinity and prey concentrations on Pseudoplatystoma corruscans, Prochilodus costatus and Lophiosilurus alexandri larviculture

Santos, José Cláudio Epaminondas dos; Luz, Ronald Kennedy

doi:10.1016/j.aquaculture.2008.10.014

Cited by 70 publications

(58 citation statements)

References 23 publications

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“…Similarly, conservation efforts in the field could be more successful if corroborated by captivity studies. Therefore, study of the development of various fish species in captivity is one of the first steps in helping conservation biologists rescue endangered species, such as, many Pimelodidae: Steindachneridion parahybae (Honji, 2011), S. melanodermatum (Feiden et al, 2006), S. scripta (Adamante et al, 2007), S. scriptum (Schütz et al, 2008), Rhamdia quelen (Soso et al, 2007), Pseudoplatystoma corruscans, and Lophiosilurus alexandri (Santos & Luz, 2009).…”

Section: Introductionmentioning

confidence: 99%

Embryonic development and larval stages of Steindachneridion parahybae (Siluriformes: Pimelodidae): implications for the conservation and rearing of this endangered Neotropical species

et al. 2012

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Steindachneridion parahybae is a freshwater catfish endemic to the Paraíba do Sul River and is classified as an endangered Neotropical species. An increasing number of conservation biologists are incorporating morphological and physiological research data to help conservation managers in rescue these endangered species. This study investigated the embryonic and larval development of S. parahybae in captivity, with emphasis in major events during the ontogeny of S. parahybae. Broodstocks were artificially induced to reproduce, and the extrusion occurred 200-255 degree-hours after hormonal induction at 24°C. Larval ontogeny was evaluated every 10 minutes under microscopic/stereomicroscopic using fresh eggs samples. The main embryogenic development stages were identified: zygote, cleavage, including the morula, blastula, gastrula phase, organogenesis, and hatching. The extruded oocytes showed an average diameter of 1.10 ± 0.10 mm, and after fertilization and hydration of eggs, the average diameter of eggs increased to about 1.90 ± 0.60 mm, characterized by a large perivitelline space that persisted up to embryo development, the double chorion, and the poles (animal and vegetative). Cell division started about 2 minutes after fertilization (AF), resulting in 2, 4, 8 (4 x 2 arrangement of cells), 16 (4 x 4), 32 (4 x 8) and 64 (2 x 4 x 8) cells. Furthermore, the blastula and gastrula stages followed after these cells divisions. The closed blastopore occurred at 11 h 20 min AF; following the development, the organogenetic stages were identified and subdivided respectively in: early segmentation phase and late segmentation phase. In the early segmentation phase, there was the establishment of the embryonic axis, and it was possible to distinguish between the cephalic and caudal regions; somites, and the optic vesicles developed about 20 h AF. Total hatching occurred at 54 h AF, and the larvae average length was 4.30 ± 0.70 mm. Gradual yolk sac reduction was observed during the first two days of larval development. The first feeding occurred at the end of the second day. During the larval phase, cannibalism, heterogeneous larval growth and photophobia were also observed. This information will be important in improving the artificial reproduction protocols of S. parahybae in controlled breeding programs.Steindachneridion parahybae é um bagre de água doce, endêmico do rio Paraíba do Sul e é classificado como espécie neotropical ameaçada. Um número crescente de biólogos conservacionistas estão incorporando dados de pesquisas morfológicas e fisiológicas para ajudar os gestores de conservação no resgate destas espécies ameaçadas de extinção. Este estudo investigou o desenvolvimento embrionário e larval de S. parahybae em cativeiro, com ênfase nos principais eventos durante a ontogenia de S. parahybae. Reprodutores foram artificialmente induzidos à reprodução e a extrusão ocorreu com 200-255 horas-graus após a indução hormonal a 24°C. A ontogenia larval foi avaliada a cada 10 minutos sob microscópio/ estereomicroscópio, utiliz...

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Section: Introductionmentioning

confidence: 99%

Embryonic development and larval stages of Steindachneridion parahybae (Siluriformes: Pimelodidae): implications for the conservation and rearing of this endangered Neotropical species

et al. 2012

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“…A salinização da água, durante a larvicultura, também vem sendo realizada para outras espécies neotropicais estenoalinas, com resultados semelhantes ou superiores aos verificados em água doce (Luz & Portella, 2002;Weingartner & Zaniboni Filho, 2004;Santos & Luz, 2009;Luz & Santos, 2010;Jomori et al, 2012), fato que pode ser atribuído, entre outros, à melhoria da condição fisiológica dos animais.…”

Section: Tilapia Larviculture In Freshwater and In Slightly Saline Waterunclassified

“…Menor sobrevivência e desempenho também foram verificados na larvicultura de outras espécies de água doce como Pseudoplatystoma corruscans (Santos & Luz, 2009) à salinidade de 4 g L -1 , resultado corroborado pelo presente trabalho. Todavia, larvas de Rhinelepis aspera (Luz & Santos, 2010), Hoplias lacerdae (Luz & Portella, 2002) e Prochilodus costatus (Santos & Luz, 2009) -espécies estenoalinas -, podem ser mantidas à salinidade de até 4 g L -1 , sem ter o desempenho e a sobrevivência afetados.…”

Section: Tilapia Larviculture In Freshwater and In Slightly Saline Waterunclassified

“…Todavia, larvas de Rhinelepis aspera (Luz & Santos, 2010), Hoplias lacerdae (Luz & Portella, 2002) e Prochilodus costatus (Santos & Luz, 2009) -espécies estenoalinas -, podem ser mantidas à salinidade de até 4 g L -1 , sem ter o desempenho e a sobrevivência afetados. Os resultados apresentados confirmam que, apesar de as tilápias juvenis e adultas poderem ser criadas a gradientes maiores de salinidade, as larvas no início da alimentação exógena (cinco dias de vida) não são tolerantes, em comparação a outras espécies de água doce.…”

Section: Tilapia Larviculture In Freshwater and In Slightly Saline Waterunclassified

“…Fato semelhante foi registrado quanto ao peso e ao comprimento (Tabela 2). A salinidade a 2 g L -1 tem sido empregada na larvicultura, com resultados semelhantes ou superiores de sobrevivência e crescimento de outras espécies neotropicais de água doce, como Hoplias lacerdae (Luz & Portella, 2002), Pimelodus maculatus (Weingartner & Zaniboni Filho, 2004), Pseudoplatystoma corruscans (Santos & Luz, 2009), Lophiosilurus alexandri (Santos & Luz, 2009), Rhinelepis aspera (Luz & Santos, 2010) e Prochilodus costatus (Santos & Luz, 2009), o que mostra que este é um manejo adequado para a larvicultura inicial de peixes.…”

Section: Tilapia Larviculture In Freshwater and In Slightly Saline Waterunclassified

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Larvicultura de tilápia em água doce e água salinizada

Luz

Santos

Filho

et al. 2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito de diferentes salinidades da água na larvicultura de tilápia. Larvas com cinco dias pós-eclosão foram estocadas em tanques de 6 L durante 30 dias. Os tratamentos experimentais foram água doce e água com 2, 4, e 6 g L -1 de sal, com seis repetições. As larvas mantidas a 6 g L -1 de sal apresentaram mortalidade total, antes de dez dias de alimentação ativa. Na salinidade a 4 g L -1 , a sobrevivência e o desempenho foram inferiores aos registrados para os animais mantidos em água doce e a 2 g L -1 de sal, com resultados semelhantes entre si.Termos para indexação: Oreochromis niloticus, desempenho, salinidade da água. Tilapia larviculture in freshwater and in slightly saline waterAbstract -The objective of this work was to evaluate the effects of different water salinities on tilapia larviculture. Larvae with five days post-hatching were stocked in tanks of 6 L each during 30 days. Treatments were carried out in freshwater and water at 2, 4, and 6 g L -1 salinity, with six replicates. Larvae kept at 6 g L -1 salinity showed total mortality before the ten days of active feeding. Survival and growth at 4 g L -1 salinity were lower than the ones registered for animals kept in freshwater and 2 g L -1 salinity, with similar results to one another.

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Microsatellite assessment of the genetic diversity in indigenous populations of curimba (Prochilodus argenteus) in the São Francisco river (Brazil)

et al. 2017

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Effect of salinity and prey concentrations on Pseudoplatystoma corruscans, Prochilodus costatus and Lophiosilurus alexandri larviculture

Cited by 70 publications

References 23 publications

Embryonic development and larval stages of Steindachneridion parahybae (Siluriformes: Pimelodidae): implications for the conservation and rearing of this endangered Neotropical species

Embryonic development and larval stages of Steindachneridion parahybae (Siluriformes: Pimelodidae): implications for the conservation and rearing of this endangered Neotropical species

Larvicultura de tilápia em água doce e água salinizada

Microsatellite assessment of the genetic diversity in indigenous populations of curimba (Prochilodus argenteus) in the São Francisco river (Brazil)

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