Elevated Temperature Applied during Gonadal Transformation Leads to Male Bias in Zebrafish (Danio rerio)

2012 ◽  
Vol 6 (4) ◽  
pp. 201-209 ◽  
Author(s):  
H. Abozaid ◽  
S. Wessels ◽  
G. Hörstgen-Schwark
Keyword(s):  
Elevated Temperature ◽  
Danio Rerio ◽  
Male Bias

Dydrogesterone Causes Male Bias and Accelerates Sperm Maturation in Zebrafish (Danio rerio)

2018 ◽  
Vol 52 (15) ◽  
pp. 8903-8911 ◽  
Author(s):  
Wen-Jun Shi ◽  
Yu-Xia Jiang ◽  
Guo-Yong Huang ◽  
Jian-Liang Zhao ◽  
Jin-Na Zhang ◽  
...  
Keyword(s):  
Danio Rerio ◽  
Sperm Maturation ◽  
Male Bias

scholarly journals Ocean-Warming During Embryogenesis Programs a Lasting Transcriptomic Signature in Fishes

2021 ◽  
Author(s):  
Daniel M. Ripley ◽  
Terence Garner ◽  
Samantha A. Hook ◽  
Ana Veríssimo ◽  
Bianka Grunow ◽  
...  
Keyword(s):  
Gene Expression ◽  
Elevated Temperature ◽  
Danio Rerio ◽  
Elevated Temperatures ◽  
Dicentrarchus Labrax ◽  
Later Life ◽  
Cardiac Performance ◽  
Acute Effects ◽  
Scyliorhinus Canicula ◽  
Transcriptomic Signature

AbstractExposure to elevated temperatures during embryogenesis has profound acute effects on the cardiac performance, metabolism, and growth of fishes. Some temperature-induced effects may be retained into, or manifest in, later-life through a mechanism termed developmental programming. In this study, we incubated Scyliorhinus canicula embryos at either 15°C or 20°C before transferring the newly hatched sharks to a common set of conditions (15°C) for 5 months. Lasting transcriptomic differences associated with the developmental environment were identified, and interactions between cardiac genes were investigated using hypernetwork modelling. Development at an elevated temperature caused changes in transcriptomic connectivity and entropy, parameters thought to relate to plasticity and fitness. We then validated these observations through a novel re-analysis of published Danio rerio and Dicentrarchus labrax muscle tissue datasets. Together, these data demonstrate a persistent, programmed effect of developmental temperature on the co-ordination of gene expression in three species of fishes, which may relate to altered plasticity and fitness in later-life.

Developmental exposure to progestins causes male bias and precocious puberty in zebrafish (Danio rerio)

2016 ◽  
Vol 177 ◽  
pp. 316-323 ◽  
Author(s):  
Johan Svensson ◽  
Arshi Mustafa ◽  
Jerker Fick ◽  
Monika Schmitz ◽  
Björn Brunström
Keyword(s):  
Precocious Puberty ◽  
Danio Rerio ◽  
Developmental Exposure ◽  
Male Bias

Evidence for a shear mechanism for the precipitation of γ-zirconium hydride in zirconium

1978 ◽  
Vol 36 (1) ◽  
pp. 658-659
Author(s):  
G.J.C. Carpenter
Keyword(s):  
Elevated Temperature ◽  
Strain Field ◽  
Zirconium Hydride ◽  
Zirconium Atom ◽  
Atom Diffusion ◽  
Solvus Temperature ◽  
Hexagonal Close Packed ◽  
Partial Dislocations ◽  
The Face

In zirconium-hydrogen alloys, rapid cooling from an elevated temperature causes precipitation of the face-centred tetragonal (fct) phase, γZrH, in the form of needles, parallel to the close-packed <1120>zr directions (1). With low hydrogen concentrations, the hydride solvus is sufficiently low that zirconium atom diffusion cannot occur. For example, with 6 μg/g hydrogen, the solvus temperature is approximately 370 K (2), at which only the hydrogen diffuses readily. Shears are therefore necessary to produce the crystallographic transformation from hexagonal close-packed (hep) zirconium to fct hydride.The simplest mechanism for the transformation is the passage of Shockley partial dislocations having Burgers vectors (b) of the type 1/3<0110> on every second (0001)Zr plane. If the partial dislocations are in the form of loops with the same b, the crosssection of a hydride precipitate will be as shown in fig.1. A consequence of this type of transformation is that a cumulative shear, S, is produced that leads to a strain field in the surrounding zirconium matrix, as illustrated in fig.2a.

Microstructural characterization of a rapidly solidified Al-Fe-V-Si alloy for elevated temperature applications

1988 ◽  
Vol 46 ◽  
pp. 550-551
Author(s):  
R. E. Franck ◽  
J. A. Hawk ◽  
G. J. Shiflet
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Grain Growth ◽  
Volume Fraction ◽  
Microstructural Characterization ◽  
Second Phase ◽  
Microstructural Stability ◽  
Elevated Temperature Strength ◽  
Temperature Applications

Rapid solidification processing (RSP) is one method of producing high strength aluminum alloys for elevated temperature applications. Allied-Signal, Inc. has produced an Al-12.4 Fe-1.2 V-2.3 Si (composition in wt pct) alloy which possesses good microstructural stability up to 425°C. This alloy contains a high volume fraction (37 v/o) of fine nearly spherical, α-Al12(Fe, V)3Si dispersoids. The improved elevated temperature strength and stability of this alloy is due to the slower dispersoid coarsening rate of the silicide particles. Additionally, the high v/o of second phase particles should inhibit recrystallization and grain growth, and thus reduce any loss in strength due to long term, high temperature annealing.The focus of this research is to investigate microstructural changes induced by long term, high temperature static annealing heat-treatments. Annealing treatments for up to 1000 hours were carried out on this alloy at 500°C, 550°C and 600°C. Particle coarsening and/or recrystallization and grain growth would be accelerated in these temperature regimes.

Local interaction rules and collective motion in black neon tetra (Hyphessobrycon herbertaxelrodi) and zebrafish (Danio rerio).

2019 ◽  
Vol 133 (2) ◽  
pp. 143-155 ◽  
Author(s):  
Vicenç Quera ◽  
Elisabet Gimeno ◽  
Francesc S. Beltran ◽  
Ruth Dolado
Keyword(s):  
Danio Rerio ◽  
Collective Motion ◽  
Local Interaction
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