Evidence of temperature-dependent sex determination in the European sea bass (Dicentrarchus labrax L.)

Pavlidis, M.; Koumoundouros, George; Sterioti, Aspasia; Somarakis, Stylianos; Divanach, P.; Kentouri, M.

doi:10.1002/1097-010x(20000801)287:3<225::aid-jez4>3.0.co;2-d

Cited by 118 publications

(110 citation statements)

References 30 publications

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“…Thus, among farmed species, sex-ratio deviations in favour of males can be observed in tilapia O. niloticus and atipa Hoplosternum littorale [18] exposed to a high incubation temperature [19], and in sea bass Dicentrarchus labrax submitted to complex interactions between temperature [20,21] and probably other factors associated with juvenile farming stages [22]. In both cases, the sensitivity to environmental factors appear to exhibit a strong genetic component.…”

Section: Sexualitymentioning

confidence: 99%

Particularities of reproduction and oogenesis in teleost fish compared to mammals

2005

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-Compared to mammals, teleost reproduction presents many original features. Reproductive strategies of species are diversified into numerous adaptations to a large variety of aquatic environments. This diversity may concern sexuality, spawning and parental behaviour, sensitivity to environmental factors, and specific features of gametogenesis such as the duration of vitellogenesis, and egg morphology. Sexuality presents a variety of natural modalities, from gonochorism to hermaphrodism. The absence of definitive arrest of body growth in the adult of most species gives a particular interest to the practical control of growth-reproduction interactions. Vitellogenesis, which represents an important metabolic effort for the maternal organism, involves the synthesis of vitellogenin, a specific glycolipo-phosphoprotein produced in the liver under estradiol stimulation, and its incorporation into oocytes by a receptor mediated process. Both estradiol synthesis in follicle cells and vtg uptake by vitellogenic follicles appear to be mainly controlled by FSH. Oocyte maturation is directly triggered by a progestin, or MIS (maturation inducing steroid) synthesised in follicle cells mainly under LH control, and acting through the non-genomic activation of a membrane receptor. Practical applications of some of these particularities result mainly from the external character of the fertilisation process and of embryonic development, which allows manipulating respectively egg chromosome stocks and sex differentiation. Moreover, the sensitivity of sex differentiation to exogenous factors favours the development of practical methods to control the sex of farmed populations. Finally, the sensitivity of reproductive mechanisms to xenobiotics has led to various kinds of bioassays for putative pollutants.reproductive strategies / sexuality / spawning / vitellogenesis / oocyte maturation / fertilisation

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Section: Sexualitymentioning

confidence: 99%

Particularities of reproduction and oogenesis in teleost fish compared to mammals

2005

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“…Besides swimming performance, it has been shown to affect growth, metabolism, time of hatching (Herzig and Winkler 1986), development (Herzig and Winkler 1986;Fukuhara 1990;Polo et al 1991;Gibson and Johnston 1995;Lein et al 1997), yolk absorption (Fukuhara 1990), muscle ontogeny and development (Johnston 1981(Johnston , 1993ontogeny of internal organs (Fukuhara 1990;Gibson and Johnston 1995), external morphology (Lindsey 1988;Wimberger 1992;Tudela 1999;Koumoundouros et al 2001a;Pakkasmaa and Piironen 2001;Cabral et al 2003;Silva 2003;Turan 2004), meristic characters (Turan 2004), appearance of skeletal deformities (Polo et al 1991;Koumoundouros et al 2001b), sex determination (Baroiller et al 1999;Pavlidis et al 2000;Koumoundouros et al 2002a) and the overall survival (Fukuhara 1990;Lein et al 1997) and lifespan of fish (Malek et al 2004). Although the effect of swimming temperature on the performance of fish has been studied thoroughly and in a wide range of species, there are only a few studies focusing on the impact of rearing temperature on the swimming performance of adult fish (i.e.…”

Section: Introductionmentioning

confidence: 99%

Effect of developmental temperature on swimming performance of zebrafish (Danio rerio) juveniles

2010

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It is widely known that water temperature affects the swimming capacity of fish. But the effect of the rearing temperature on the swimming ability of the fish at later stages, has not had similar attention. In this study, four populations of zebrafish, were reared in different water temperatures (22, 25, 28 and 31°C) and after being acclimatized in a common temperature (26.5°C) for over a month, they were subjected to swimming trials in order to evaluate the maximum relative critical velocity (RU crit ) in each case. Fish that were reared in 22°C showed statistically significant lower performance than the ones reared in 31°C (7.72 ±0.17 vs. 8.79±0.28, means ± S.E.). Possible explanations for the observed differentiation could be the effect of early life temperature on fish muscle ontogeny or on body shape.

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“…The sea bass is an important species in Mediterranean aquaculture, and it appears that, in all aquaculture populations, sex ratios are strongly biased toward males (75-95%, e.g., Blazquez et al 1998;Saillant et al 2002Saillant et al , 2003a, which is a problem for farmers as males mature earlier and grow less than females. Temperature has been shown to have a major effect on sex determination in sea bass (Blazquez et al 1998;Pavlidis et al 2000;Saillant et al 2002;Mylonas et al 2005). The effect of temperature is not fully understood, as two studies show an increased proportion of males with cold temperature (15°: Blazquez et al 1998;13°: Saillant et al 2002) while the other two studies show an increased proportion of females at 13°and 15° (Pavlidis et al 2000;Mylonas et al 2005).…”

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confidence: 99%

A Polygenic Hypothesis for Sex Determination in the European Sea Bass Dicentrarchus labrax

Vandeputte

Dupont‐Nivet

Chavanne³

et al. 2007

Genetics

166

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Polygenic sex determination, although suspected in several species, is thought to be evolutionarily unstable and has been proven in very few cases. In the European sea bass, temperature is known to influence the sex ratio. We set up a factorial mating, producing 5.893 individuals from 253 full-sib families, all reared in a single batch to avoid any between-families environmental effects. The proportion of females in the offspring was 18.3%, with a large variation between families. Interpreting sex as a threshold trait, the heritability estimate was 0.62 6 0.12. The observed distribution of family sex ratios was in accordance with a polygenic model or with a four-sex-factors system with environmental variance and could not be explained by any genetic model without environmental variance. We showed that there was a positive genetic correlation between weight and sex (r A ¼ 0.50 6 0.09), apart from the phenotypic sex dimorphism in favor of females. This supports the hypothesis that a minimum size is required for sea bass juveniles to differentiate as females. An evolution of sex ratio by frequency-dependent selection is expected during the domestication process of Dicentrarchus labrax populations, raising concern about the release of such fish in the wild.

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Evidence of temperature-dependent sex determination in the European sea bass (Dicentrarchus labrax L.)

Cited by 118 publications

References 30 publications

Particularities of reproduction and oogenesis in teleost fish compared to mammals

Particularities of reproduction and oogenesis in teleost fish compared to mammals

Effect of developmental temperature on swimming performance of zebrafish (Danio rerio) juveniles

A Polygenic Hypothesis for Sex Determination in the European Sea Bass Dicentrarchus labrax

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