scholarly journals Comparative toxicity of conventional and unconventional oils during rainbow trout (Oncorhynchus mykiss) embryonic development: From molecular to health consequences

Chemosphere ◽  
2022 ◽  
Vol 288 ◽  
pp. 132521
Author(s):  
Roxanne Bérubé ◽  
Molly Lefebvre-Raine ◽  
Charles Gauthier ◽  
Thibault Bourdin ◽  
Pauline Bellot ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Embryonic Development ◽  
Oncorhynchus Mykiss ◽  
Health Consequences ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Comparative Toxicity

Early onset of embryonic mortality in sub-fertile families of rainbow trout (Oncorhynchus mykiss)

2005 ◽  
Vol 17 (8) ◽  
pp. 785 ◽  
Author(s):  
J. W. Stoddard ◽  
J. E. Parsons ◽  
J. J. Nagler
Keyword(s):  
Rainbow Trout ◽  
Embryonic Development ◽  
Oncorhynchus Mykiss ◽  
Embryonic Mortality ◽  
Early Embryonic Development ◽  
Single Pair ◽  
Critical Periods ◽  
Embryo Viability ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Embryonic Shield

Survival during early embryonic development is highly variable in oviparous fishes and appears to be related to events associated with the female at the time of ovulation and spawning. The goal of this study was to identify critical periods of mortality associated with early embryonic development in egg batches from female rainbow trout (Oncorhynchus mykiss) that were checked for ovulation every 5–7 days. The experiment was designed to specifically remove post-ovulatory ageing and reduce paternal variability. Embryo viability in 269 single-pair-mated families was systematically tracked at the following five stages: second cleavage (0.5 days post fertilisation (dpf)), elevated blastula (2.5 dpf), embryonic shield (6 dpf), embryonic keel (9 dpf), and retinal pigmentation (19 dpf). At each of the five stages families with embryo viability assessments of <80% were classed as sub-fertile, whereas those with >80% embryo viability were classed as fertile. Embryo viability in sub-fertile families was distinctly reduced at 0.5 dpf, in contrast to fertile families, but remained constant from that point through to 19 dpf. These results suggest that the critical period of early embryonic mortality in sub-fertile families of rainbow trout parallels events that occur at or shortly after fertilisation and is independent of post-ovulatory aging.

Embryology of the teleost (Oncorhynchus mykiss) lens

1994 ◽  
Vol 72 (4) ◽  
pp. 689-701 ◽  
Author(s):  
J. A. West ◽  
J. G. Sivak ◽  
R. D. Moccia
Keyword(s):  
Rainbow Trout ◽  
Embryonic Development ◽  
Light Microscopy ◽  
Oncorhynchus Mykiss ◽  
Anterior Pole ◽  
Lens Development ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Lens Vesicle ◽  
Lens Placode

Embryological studies of the teleost lens have attracted little attention. The morphology of the rainbow trout (Oncorhynchus mykiss) lens during embryonic development was investigated using light microscopy. Results indicate that in general, the embryology of the rainbow trout lens proceeds much like that which has been described for other vertebrates. However, evidence in this study indicates that both layers of the lens placode invaginate, forming a lens pit, contradicting earlier descriptions of lens development in fishes. Furthermore, a hollow lens vesicle does not appear during development, as is typically described for the mammalian lens. Most importantly, the posterior limit of the anterior epithelium is situated well beyond the equator, three-quarters of the distance from the anterior pole of the lens. As a result, the germinative and transitional zones are located more posteriorly than traditionally described. The consequence of these features and their relevance to the shape of the lens are discussed.

Effect of temperature on gene expression of the Gh/Igf system during embryonic development in rainbow trout (Oncorhynchus mykiss)

2003 ◽  
Vol 298A (2) ◽  
pp. 134-142 ◽  
Author(s):  
Jean-Charles Gabillard ◽  
Pierre-Yves Rescan ◽  
Benoit Fauconneau ◽  
Claudine Weil ◽  
Pierre-Yves Le Bail
Keyword(s):  
Gene Expression ◽  
Rainbow Trout ◽  
Embryonic Development ◽  
Oncorhynchus Mykiss ◽  
Effect Of Temperature ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Igf System
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