Effects of dietary fatty acids on the reproduction of South American female catfish Rhamdia quelen (Quoy & Gaimard, 1824)
ABSTRACT The effects of a diet supplemented with 5% marine fish oil, 5% refined palm oil, 5% soybean oil, and a combination of the three on reproductive parameters of females Rhamdia quelen was investigated. Spawning was artificially induced to evaluate rates of fertilization, hatching and larvae no...
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Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
2019
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oai:scielo:S0718-560X20190003004562019-08-09Effects of dietary fatty acids on the reproduction of South American female catfish Rhamdia quelen (Quoy & Gaimard, 1824)Hilbig,Cleonice CristinaNascimento,Nivaldo Ferreira doHeinen,Adriano LuisTovo Neto,AldoFunghetto,Jackson PabloBombardelli,Robie AllanMeurer,FábioNakaghi,Laura Satiko Okada broodstock lipid sources puberty fecundity spawning aquaculture ABSTRACT The effects of a diet supplemented with 5% marine fish oil, 5% refined palm oil, 5% soybean oil, and a combination of the three on reproductive parameters of females Rhamdia quelen was investigated. Spawning was artificially induced to evaluate rates of fertilization, hatching and larvae normality. Fatty acid profiles of the diets, ovaries and oocytes were determined. A higher spawning rate (%) was observed for diets containing fish oil (78.65 ± 3.60) and palm oil (77.15 ± 3.97), followed by oil mix (65.46 ± 4.57). The diet containing soybean oil was associated with significantly lower fertilization (60.14 ± 5.66; P < 0.05) than the palm and fish oil diets. Lower fertilization may be explained by a high level of n-6 fatty acids in the diet, which possibly accelerate the oocyte maturation. Satisfactory fecundity (P > 0.05) were observed for all tested diets, whit 289.77 ± 23.90 (palm oil) until 323.31 ± 38.45 oocytes g-1 body weight (fish oil). The treatments were not shown to influence oocyte size, larval size or rate of larva deformity. Oocyte fatty acid composition was like that of gonads. Docosahexaenoic (DHA; C22:6 n-3) fatty acid was preferentially deposited in ovaries and oocytes. Ratios of n3/n6, DHA/EPA, EPA/ARA, did not affect the reproductive performance of females. Therefore, regarding female reproductive performance, the vegetable lipid sources tested are suitable for being used in R. quelen diet, and palm oil, in particular, is considered an excellent alternative to fish oil.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.47 n.3 20192019-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000300456en10.3856/vol47-issue3-fulltext-8 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
broodstock lipid sources puberty fecundity spawning aquaculture |
| spellingShingle |
broodstock lipid sources puberty fecundity spawning aquaculture Hilbig,Cleonice Cristina Nascimento,Nivaldo Ferreira do Heinen,Adriano Luis Tovo Neto,Aldo Funghetto,Jackson Pablo Bombardelli,Robie Allan Meurer,Fábio Nakaghi,Laura Satiko Okada Effects of dietary fatty acids on the reproduction of South American female catfish Rhamdia quelen (Quoy & Gaimard, 1824) |
| description |
ABSTRACT The effects of a diet supplemented with 5% marine fish oil, 5% refined palm oil, 5% soybean oil, and a combination of the three on reproductive parameters of females Rhamdia quelen was investigated. Spawning was artificially induced to evaluate rates of fertilization, hatching and larvae normality. Fatty acid profiles of the diets, ovaries and oocytes were determined. A higher spawning rate (%) was observed for diets containing fish oil (78.65 ± 3.60) and palm oil (77.15 ± 3.97), followed by oil mix (65.46 ± 4.57). The diet containing soybean oil was associated with significantly lower fertilization (60.14 ± 5.66; P < 0.05) than the palm and fish oil diets. Lower fertilization may be explained by a high level of n-6 fatty acids in the diet, which possibly accelerate the oocyte maturation. Satisfactory fecundity (P > 0.05) were observed for all tested diets, whit 289.77 ± 23.90 (palm oil) until 323.31 ± 38.45 oocytes g-1 body weight (fish oil). The treatments were not shown to influence oocyte size, larval size or rate of larva deformity. Oocyte fatty acid composition was like that of gonads. Docosahexaenoic (DHA; C22:6 n-3) fatty acid was preferentially deposited in ovaries and oocytes. Ratios of n3/n6, DHA/EPA, EPA/ARA, did not affect the reproductive performance of females. Therefore, regarding female reproductive performance, the vegetable lipid sources tested are suitable for being used in R. quelen diet, and palm oil, in particular, is considered an excellent alternative to fish oil. |
| author |
Hilbig,Cleonice Cristina Nascimento,Nivaldo Ferreira do Heinen,Adriano Luis Tovo Neto,Aldo Funghetto,Jackson Pablo Bombardelli,Robie Allan Meurer,Fábio Nakaghi,Laura Satiko Okada |
| author_facet |
Hilbig,Cleonice Cristina Nascimento,Nivaldo Ferreira do Heinen,Adriano Luis Tovo Neto,Aldo Funghetto,Jackson Pablo Bombardelli,Robie Allan Meurer,Fábio Nakaghi,Laura Satiko Okada |
| author_sort |
Hilbig,Cleonice Cristina |
| title |
Effects of dietary fatty acids on the reproduction of South American female catfish Rhamdia quelen (Quoy & Gaimard, 1824) |
| title_short |
Effects of dietary fatty acids on the reproduction of South American female catfish Rhamdia quelen (Quoy & Gaimard, 1824) |
| title_full |
Effects of dietary fatty acids on the reproduction of South American female catfish Rhamdia quelen (Quoy & Gaimard, 1824) |
| title_fullStr |
Effects of dietary fatty acids on the reproduction of South American female catfish Rhamdia quelen (Quoy & Gaimard, 1824) |
| title_full_unstemmed |
Effects of dietary fatty acids on the reproduction of South American female catfish Rhamdia quelen (Quoy & Gaimard, 1824) |
| title_sort |
effects of dietary fatty acids on the reproduction of south american female catfish rhamdia quelen (quoy & gaimard, 1824) |
| publisher |
Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar |
| publishDate |
2019 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000300456 |
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