Yolk testosterone levels and dietary carotenoids influence growth and immunity of grey partridge chicks

Cucco, Marco; Guasco, B.; Malacarne, Giorgio; Ottonelli, Roberta; Tanvez, Aurélie

doi:10.1016/j.ygcen.2007.12.010

Cited by 51 publications

(55 citation statements)

References 54 publications

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“…This is in agreement with observation in rainbow trout [34], gilthead seabream [35]. Sex hormones are usually elevated during spawning season of fishes and the rise of sex hormones can severely affect the immunity of fishes [19] [36].…”

Section: Discussionsupporting

confidence: 92%

“…The rise of estradiol-17-β is reported to affect IgM level, and antibody-producing cells in several fish species like Oncorhynchus mykiss, Salmo trutta, Chinook salmon, Oncorhynchus tshawytscha, gold fish, Carassius auratus [18]- [21]. For example in O mykiss [34] [37] and gilthead seabream [35], shown that the rise of sex hormones can suppress the plasma IgM and IgM secreting cells during spawning period leading to immunosuppressive condition. Due to, elevation of sex steroids can make fish more vulnerable to several microbial infections during the spawning season and subsequent mortality following the spawning phase.…”

Section: Discussionmentioning

confidence: 99%

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The Effects of Letrozole in Transfer of Maternal Immunity against Lactococcosis to Eggs and Larvae in Rainbow Trout (<i>Oncorhynchus mykiss</i>, Walbaum)

Akbary¹,

Mirvaghefi²,

Akhlaghi³

et al. 2015

FNS

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How to cite this paper: Akbary, P., et al. (2015) AbstractThis study evaluated transfer of maternal lysozyme and immunoglobulin (IgM) against Lactococcus garviea, the causative agent of lactococcosis to eggs and larvae in rainbow trout. Changes in circulating lysozyme and IgM during development of eggs and larvae were measured by a method based on the ability of lysozyme to lyse the bacterium Micrococcus lysodeikticus and enzymelinked immunosorbent assay (ELISA) respectively. For doing this, twelve broodstocks were injected weekly with 2.5 mg•kg −1 letrozole (an endocrine disrupter component) two months before spawning season and vaccinated intraperitoneally (i.p) with a bacterin (inactivated L. garviae) one month before spawning. Twelve broodstocks for vaccination and twelve female rainbow trouts as control group were also immiunised (i.p) with the bacterin and injected (i.p) with PBS respectively. Results showed that at day 8 after hatching, lysozyme and IgM levels during pre-larval stages decreased gradually, as yolks were absorbed. Lysozyme and IgM levels were significantly higher in the letrozole injected immiunised parents 30 days after immunisation as well as their larvae compared to the control group (p < 0.05). These results showed the lysozyme and IgM detected from day 0 to day 8 derived from maternal fish while the lysozyme and IgM detected from day 10 onward are neo-synthesized lysozyme and IgM. The present study indicated the role of the injection of letrozole (two months before spawning) and parent immunisation with a bacterin (inactivated L. garviae) (one month before spawning) in maternal transfer of lysozyme and IgM levels to eggs and larvae. *Corresponding author. P. Akbary et al.255

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

The Effects of Letrozole in Transfer of Maternal Immunity against Lactococcosis to Eggs and Larvae in Rainbow Trout (<i>Oncorhynchus mykiss</i>, Walbaum)

Akbary¹,

Mirvaghefi²,

Akhlaghi³

et al. 2015

FNS

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“…) as in several other species e.g., canaries Serinus sp. (Schwabl, 1996) Blue tits Cyanistes caeruleus (Tschirren et al, 2005), and Grey partridges Perdix perdix (Cucco et al, 2008). Our results suggest that females respond to the amount of nest herbs with adjustments of yolk testosterone concentrations.…”

Section: Discussionmentioning

confidence: 65%

Nest Composition and Yolk Hormones: Do Female European Starlings Adjust Yolk Androgens to Nest Quality?

Gwinner

Yohannes

Schwabl

2013

Avian Biology Research

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The nest is a key element of avian reproductive fitness. It provides the developmental environment for the embryo and nestling thereby affecting their quality and survival. Nests are often constructed by the male and nest quality, elaboration, and ornamentation vary among males in a species. Therefore, male nest-building behaviour is likely under sexual selection and females may use male nest-building behaviour and nest features as cues in mate choice and their own reproductive investment. We tested this hypothesis in European starlings (Sturnus vulgaris). Male starlings present green plants to females during their courtship display and furbish their nests with variable quantities of fresh green plants. The highest frequency of plant incorporation into the nest occurs during pair formation and oogenesis. We determined nest composition and measured yolk testosterone concentrations in eggs. Yolk testosterone concentrations were positively correlated with the amount of green plant material in nests. Because males use green nest material in courtship and green nest material positively affects nestlings' development, we suggest that female European starlings use male nest-building effort, ritualised courtship display of green plants, and nest characteristics in mate choice, and adjust yolk testosterone levels in the eggs to the quality of the nest to optimise offspring growth.

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“…Thus, the current findings point out the immunomodulatory effects of maternal androgens varying in the type of immune response, the developmental stage and within the context of the prevailing environmental conditions (Tobler et al, 2010). Furthermore, a dosedependent experiment in grey partridge (Perdix perdix) demonstrated an enhanced and decreased immune response of chicks hatched from eggs treated with low and high T doses, respectively (Cucco et al, 2008). Such a U-shaped dose-response curve clearly points out the limitations of yolk hormone manipulation by a single injection into the egg and suggests that not only dose but also interfemale differences in endogenous yolk hormone concentrations should be considered before experimental manipulation.…”

Section: Introductionmentioning

confidence: 56%

“…However, data obtained by experimental injections of exogenous T into eggs showed predominantly no effects on growth in precocial birds (Andersson et al, 2004;Rubolini et al, 2006) and variable effects in altricial birds (Schwabl, 1996;Müller et al, 2008). Thus, although the adaptive significance of growth promoting effects of maternal androgens has been widely discussed (Schwabl, 1996;Groothuis et al, 2005b), recent studies suggest that the data interpretation may be complicated by sex-specific effects of yolk androgens von Engelhardt et al, 2006;Sockman et al, 2008;Pitala et al, 2009), estimating an optimal dose of injected hormone in relation to its endogenous content (Navara et al, 2005;Cucco et al, 2008) and the biological potential of other hormones and substances in the egg (Hegyi and Schwabl, 2010). Our data obtained in genetic lines selected for egg T content imply that this model represents a biologically relevant way to increase maternal androgens and can simultaneously reduce the confounding effects of the above-mentioned factors.…”

Section: Discussionmentioning

confidence: 99%

Growth and innate immunity are not limited by selection for high egg testosterone content in Japanese quail

Kankova

Zeman

Okuliarova

2012

Journal of Experimental Biology

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SUMMARYThe effects of maternal androgens on fitness-related traits of offspring are generally assumed to be epigenetic adaptations to the environment that may be encountered by the next generation. Possible constraints of high yolk androgen transfer are still not understood, although a suppressed immune response in offspring is frequently considered. The aim of our study was to examine the innate immune defence in high (HET) and low egg testosterone (LET) lines of Japanese quail, which differ in the hormonal milieu of their eggs, thus providing a good physiological model for the study of androgen-mediated maternal effects. Acute phase response was induced by a lipopolysaccharide injection in 12-day-old quail and plasma corticosterone and the heterophil:lymphocyte ratio were measured at 1 and 3h post-treatment. Basal levels of non-specific antibodies (IgY) were determined in the circulation. We found that HET quail were heavier than LET quail from the second week of age, indicating enhanced post-hatching growth. At 1h post-lipopolysaccharide challenge, plasma corticosterone concentrations increased in the HET but not in the LET line. The heterophil:lymphocyte ratio rose in both lines at 3h post-immune challenge, with a more pronounced response in HET quail. Moreover, HET chicks displayed higher IgY levels than LET chicks, suggesting either enhanced passive immunoprotection or stimulated endogenous antibody production. In conclusion, our data demonstrate that the genetic selection for high egg testosterone content positively influences growth and, simultaneously, does not limit the acute phase response in young quail.

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Yolk testosterone levels and dietary carotenoids influence growth and immunity of grey partridge chicks

Cited by 51 publications

References 54 publications

The Effects of Letrozole in Transfer of Maternal Immunity against Lactococcosis to Eggs and Larvae in Rainbow Trout (<i>Oncorhynchus mykiss</i>, Walbaum)

The Effects of Letrozole in Transfer of Maternal Immunity against Lactococcosis to Eggs and Larvae in Rainbow Trout (<i>Oncorhynchus mykiss</i>, Walbaum)

Nest Composition and Yolk Hormones: Do Female European Starlings Adjust Yolk Androgens to Nest Quality?

Growth and innate immunity are not limited by selection for high egg testosterone content in Japanese quail

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Yolk testosterone levels and dietary carotenoids influence growth and immunity of grey partridge chicks

Cited by 51 publications

References 54 publications

The Effects of Letrozole in Transfer of Maternal Immunity against Lactococcosis to Eggs and Larvae in Rainbow Trout (&lt;i&gt;Oncorhynchus mykiss&lt;/i&gt;, Walbaum)

The Effects of Letrozole in Transfer of Maternal Immunity against Lactococcosis to Eggs and Larvae in Rainbow Trout (&lt;i&gt;Oncorhynchus mykiss&lt;/i&gt;, Walbaum)

Nest Composition and Yolk Hormones: Do Female European Starlings Adjust Yolk Androgens to Nest Quality?

Growth and innate immunity are not limited by selection for high egg testosterone content in Japanese quail

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The Effects of Letrozole in Transfer of Maternal Immunity against Lactococcosis to Eggs and Larvae in Rainbow Trout (<i>Oncorhynchus mykiss</i>, Walbaum)

The Effects of Letrozole in Transfer of Maternal Immunity against Lactococcosis to Eggs and Larvae in Rainbow Trout (<i>Oncorhynchus mykiss</i>, Walbaum)