Untitled

Nash, John P.; Cuisset, B.; Bhattacharyya, Sumit; Suter, Hayley C.; Menn, F. Le; Kime, David E.

doi:10.1023/a:1007850014021

Cited by 105 publications

(17 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We conducted radioimmunoassays of total androgens (T and DHT) on the unoxidized samples and DHT only assays on the oxidized samples. The crossreactivity between the T-specific antibody and DHT was 46% (see also Nash et al 2000), so we estimated the T content of each sample as totalK0.46DHT). The intra-assay coefficient of variation was 4.3G0.3% (meanGs.e.)…”

Section: Methodsmentioning

confidence: 99%

Maternal effects due to male attractiveness affect offspring development in the zebra finch

et al. 2006

View full text Add to dashboard Cite

Maternal effects occur when offspring phenotype is influenced by environmental factors experienced by the mother. Mothers are predicted to invest differentially in offspring in ways that will maximize offspring fitness depending on the environment she expects them to encounter. Here, we test for maternal effects in response to mate attractiveness on offspring developmental traits in the zebra finch Taeniopygia guttata. We controlled for parental genetic quality by manipulating male attractiveness using coloured leg rings and by randomly assigning mating pairs. The potential confounding effect of differential nestling care was controlled for by cross-fostering clutches and by allowing for variance due to foster father attractiveness in general linear models. We found a difference in egg mass investment between attractiveness groups and, importantly, we found that all of the offspring traits we measured varied with the attractiveness of the father. This provides strong evidence for maternal effects in response to mate attractiveness. Furthermore, due to the experiment design, we can conclude that these effects were mediated by differential investment of egg resources and not due to genetic differences or differences in nestling care.

show abstract

Section: Methodsmentioning

confidence: 99%

Maternal effects due to male attractiveness affect offspring development in the zebra finch

et al. 2006

View full text Add to dashboard Cite

show abstract

“…For the quantification of T, E 2 , 11-KT and 17,20β-P in the plasma, already established and well-described enzyme-linked immunoassays (ELISA) were used [74][75][76] with some modifications, using reagents from Cayman Chemical Company (Ann Arbor, MI, USA). For steroid extraction, 200 µL of plasma were extracted twice with 2 mL diethyl ether.…”

Section: Hormone Measurementsmentioning

confidence: 99%

Description of the Annual Reproductive Cycle of Wreckfish Polyprion americanus in Captivity

Papadaki

Peleteiro

Álvarez-Blázquez

et al. 2018

Fishes

View full text Add to dashboard Cite

Successful spontaneous reproduction and the production of viable offspring of wild fish in captivity can take some years of adaptation, and may also involve different environmental conditions, sex ratios and densities compared to natural populations. We followed the reproductive cycle of wreckfish Polyprion americanus—a late maturing, deep-sea benthic species—in captivity in three different broodstocks in Spain under natural photoperiod and temperature, and one broodstock in Greece under a constant temperature of 16 °C for two consecutive years, to describe the reproductive cycle of the species and the associated sex steroid hormone profiles. Oogenesis begun in the fall and post-vitellogenic oocytes of 1250 μm were present between March and June. Males were in spermiation condition and produced good-quality sperm throughout the year, regardless of the temperature profile to which they were exposed. Some females completed oogenesis, underwent oocyte maturation, and spawned spontaneously under both constant and fluctuating temperatures. The sex steroid hormones of both males and females followed the already-known profiles during fish gametogenesis, except for 17,20β-dihydroxy-progesterone, which did not seem to be related to either female or male maturation. The female reproductive dysfunctions that were identified included (a) the arrest of oogenesis at the cortical alveoli stage in certain females; (b) the failure to undergo oocyte maturation in others; and (c) the production of large percentages of unfertilized eggs from the females that spawned spontaneously. Our study suggests that reproduction in captivity is possible in wreckfish maintained under typical marine aquaculture conditions, but that reliable spawning and production of high-quality eggs may require some years of adaptation to captivity, before the reproductive dysfunctions will be overcome.

show abstract

“…Immunoassays (ELISAs) have been recently reported for the determination of estrogens [29][30][31][32][33][34]. Although this method can be sensitive and suitable for the screening of some steroid substances, it may give erroneous results due to poor specificity, accuracy, or reproducibility, as evidenced by the overestimation of trace amounts of estrogens [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

On-line coupling of solid-phase extraction to high-performance liquid chromatography for determination of estrogens in environment

Wang

Huang

Fang

et al. 2008

Analytica Chimica Acta

View full text Add to dashboard Cite

Untitled

Cited by 105 publications

References 15 publications

Maternal effects due to male attractiveness affect offspring development in the zebra finch

Maternal effects due to male attractiveness affect offspring development in the zebra finch

Description of the Annual Reproductive Cycle of Wreckfish Polyprion americanus in Captivity

On-line coupling of solid-phase extraction to high-performance liquid chromatography for determination of estrogens in environment

Contact Info

Product

Resources

About