Spawning induction of individual European sea bass females (Dicentrarchus labrax) using different GnRHa-delivery systems

Forniés, M. A.; Mañanós, Evaristo L.; Carrillo, Manuel; Rocha, Ana; Laureau, Stanislas; Mylonas, Constantinos C.; Zohar, Yonathan; Zanuy, Silvia

doi:10.1016/s0044-8486(01)00773-6

Cited by 71 publications

(32 citation statements)

References 37 publications

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“…Compared to natural reproduction, lower hatch rates or low egg quality were obtained for European sea bass (Fornies et al, 2001), Senegal sole (Aguillero et al, 2006) and yellowtail flounder (Avery et al, 2004) when the broodstocks were artificially reproduced. This variability can be ascribed to a failure to detect the appropriate time for hormonal stimulation due to different stages of oocyte maturation (Bobe & Labbé, 2010).…”

Section: Discussionmentioning

confidence: 90%

Influence of spawning procedure on gametes fertilization success in Salminus hilarii Valenciennes, 1850 (Teleostei: Characidae): Implications for the conservation of this species

et al. 2011

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Artificial reproduction and gamete fertilization were evaluated in Salminus hilarii wild and domesticated broodstocks. Wild and domesticated broodstocks were artificially induced to reproduction using a carp pituitary treatment. Four groups were considered: Group 1 (G1), fish caught in the wild maintained for three years in the same conditions as the domesticated broodstocks and spawned naturally; Group 2 (G2), broodstock born and raised in captivity and spawned naturally; Group 3 (G3), wild broodstocks, which were manually stripped for gamete collection and dry fertilization; and Group 4 (G4), domesticated males and females, also manually stripped. Oocytes, eggs, and larvae were sampled at different time intervals throughout embryonic development. Yolk sac absorption occurred approximately 24-29 h after hatching. Twenty-six h after hatching, the larvae mouths opened. Cannibalism was identified just 28-30 h after hatching. There was no morphological difference in embryonic development among all groups. The number of released eggs per gram of female was: G1: 83.3 ± 24.5 and G2: 103.8 ± 37.4; however, the fertilization success was lower in G2 (42.0 ± 6.37 %) compared with G1 (54.7 ± 3.02%) (P = 0.011). Handstripping of oocytes was not successful and the fertilization rate was zero. The reproduction of this species in captivity is viable, but it is necessary to improve broodstock management to enhance fertilization rates and obtain better fingerling production for restocking programs.A reprodução artificial e fertilização dos gametas foram avaliados em reprodutores selvagens e de cativeiro de Salminus hilarii. Reprodutores selvagens e de cativeiro foram induzidos artificialmente à reprodução utilizando hipófise de carpa. Quatros grupos foram considerados: Grupo 1 (G1), peixes capturados na natureza, mantidos por três anos nas mesmas condições de reprodutores de cativeiro e desovados naturalmente; Grupo 2 (G2), reprodutores nascidos e criados em cativeiro e desovados naturalmente; Grupo 3 (G3), reprodutores selvagens que foram extrusados manualmente para a coleta de gametas e fertilização a seco; e Grupo 4 (G4), com machos e fêmeas domesticadas, também extrusados manualmente. Oócitos, ovos e larvas foram amostrados em diferentes intervalos de tempo ao longo do desenvolvimento embrionário. A absorção do saco vitelínico ocorreu aproximadamente 24-29 h após a eclosão. Vinte e seis h após a eclosão, as larvas abriram a boca. O canibalismo foi identificado apenas 28-30 h após a eclosão. Não houve diferença morfológica no desenvolvimento embrionário entre todos os grupos. O número de ovos liberados por grama de fêmea foi: G1: 83,3 ± 24,5 e G2: 103,8 ± 37,4; embora, o sucesso na fertilização tenha sido menor no G2 (42,0 ± 6,37%) em comparação com G1 (54,7 ± 3,02%) (P = 0,011). A extrusão manual dos oócitos não foi bem sucedida e a taxa de fertilização foi zero. A reprodução em cativeiro desta espécie é viável, mas é necessário um melhor manejo dos reprodutores para aumentar as taxas de fertilização, visando a obtenção de u...

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Section: Discussionmentioning

confidence: 90%

Influence of spawning procedure on gametes fertilization success in Salminus hilarii Valenciennes, 1850 (Teleostei: Characidae): Implications for the conservation of this species

et al. 2011

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“…In agreement with Duncan et al (2012), the present study indicates that meager may be one of these species for which GnRHa injections are more appropriate. For example, in the European seabass (Dicentrarchus labrax) two types of GnRHa-delivery systems have been examined in order to induce multiple spawns (Forniés et al, 2001). Both GnRHa-delivery systems induced 23 consecutive ovulation/spawning events, but after the first spawning event the spawning kinetics were not well-synchronized among females and egg quality was not as high as other studies suggested.…”

Section: Discussionmentioning

confidence: 99%

Reproduction of hatchery-produced meagre Argyrosomus regius in captivity III. Comparison between GnRHa implants and injections on spawning kinetics and egg/larval performance parameters

et al. 2015

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“…These observations and studies indicate that meagre is a batch spawning species capable of repeated spawns in response to GnRHa induction. Fornies et al (2001) and Mylonas et al (2003), proposed that a single injection may be more appropriate for the batch spawning species European seabass (Dicentrarchus labrax). Duncan et al (2012), suggested that a single injection may also be a more appropriate treatment for meagre and that the few synchronised large spawns obtained with a single injection may be favoured by the industry to stock tanks in a hatchery.…”

Section: Dose-dependent Effect Of a Single Gnrha Injection On The Spamentioning

confidence: 99%

Dose-dependent effect of a single GnRHa injection on the spawning of meagre (Argyrosomus regius) broodstock reared in captivity

Fernández‐Palacios

Schuchardt

Roo

et al. 2014

Span. j. agric. res.

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Spawning induction of individual European sea bass females (Dicentrarchus labrax) using different GnRHa-delivery systems

Cited by 71 publications

References 37 publications

Influence of spawning procedure on gametes fertilization success in Salminus hilarii Valenciennes, 1850 (Teleostei: Characidae): Implications for the conservation of this species

Influence of spawning procedure on gametes fertilization success in Salminus hilarii Valenciennes, 1850 (Teleostei: Characidae): Implications for the conservation of this species

Reproduction of hatchery-produced meagre Argyrosomus regius in captivity III. Comparison between GnRHa implants and injections on spawning kinetics and egg/larval performance parameters

Dose-dependent effect of a single GnRHa injection on the spawning of meagre (Argyrosomus regius) broodstock reared in captivity

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