Structure of the yolksac epithelium and gills in the early developmental stages of rainbow trout (Salmo gairdneri) maintained in different ambient salinities

1978 ◽  
Vol 3 (4) ◽  
pp. 345-354 ◽  
Author(s):  
Amy C. Shen ◽  
John F. Leatherland
Keyword(s):  
Rainbow Trout ◽  
Developmental Stages ◽  
Salmo Gairdneri ◽  
Early Developmental Stages ◽  
Early Developmental

scholarly journals Sub-lethal effects of waterborne copper in early developmental stages of rainbow trout (Oncorhynchus mykiss)

2019 ◽  
Vol 170 ◽  
pp. 778-788 ◽  
Author(s):  
Shannon Weeks Santos ◽  
Jérôme Cachot ◽  
Pierre-Yves Gourves ◽  
Christelle Clérandeau ◽  
Bénédicte Morin ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Developmental Stages ◽  
Lethal Effects ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Early Developmental Stages ◽  
Early Developmental

Effect of ambient salinity on ionic and osmotic regulation of eggs, larvae, and alevins of rainbow trout (Salmo gairdneri)

1978 ◽  
Vol 56 (4) ◽  
pp. 571-577 ◽  
Author(s):  
A. C. Y. Shen ◽  
J. F. Leatherland
Keyword(s):  
Rainbow Trout ◽  
Water Content ◽  
Developmental Stages ◽  
Sea Water ◽  
Salmo Gairdneri ◽  
Distilled Water ◽  
Tissue Water ◽  
Osmotic Concentration ◽  
Perivitelline Fluid ◽  
Early Developmental

The osmotic concentration of the perivitelline fluid in eggs of rainbow trout (Salmo gairdneri) was lower in eggs maintained in distilled water than in eggs maintained in dilute artificial sea water (11‰ and 13‰). The water content of eggs, larvae, and alevins in distilled water was significantly higher than in comparable developmental stages in dilute sea water. Similarly, differences were found in the tissue Na+, K+, and Na+:K+ ratios of eggs, larvae, and alevins reared in the different ambient salinities. These data suggest that the early developmental stages of rainbow trout possess a limited capacity for osmotic or ionic regulation. Larvae appear to regulate tissue Na+ content by increasing the Na+ concentration of the perivitelline space and alevins tolerate an increase in tissue K+ content and a small decrease in tissue water content.

Review of early developmental stages of trilobites and agnostids from the Barrandian area (Czech Republic)

2017 ◽  
Vol 186 (1) ◽  
pp. 103-112
Author(s):  
Lukáš Laibl ◽  
Oldřich Fatka
Keyword(s):  
Czech Republic ◽  
Developmental Stages ◽  
History Of Research ◽  
Early Developmental Stages ◽  
History Of ◽  
Barrandian Area ◽  
Early Developmental

This contribution briefly summarizes the history of research, modes of preservation and stratigraphic distribution of 51 trilobite and five agnostid taxa from the Barrandian area, for which the early developmental stages have been described.

scholarly journals The Effect of an Anthropogenic Magnetic Field on the Early Developmental Stages of Fishes—A Review

2021 ◽  
Vol 22 (3) ◽  
pp. 1210
Author(s):  
Krzysztof Formicki ◽  
Agata Korzelecka-Orkisz ◽  
Adam Tański
Keyword(s):  
Magnetic Fields ◽  
Developmental Stages ◽  
Negative Influence ◽  
Pigment Cells ◽  
Egg Activation ◽  
Industrial Equipment ◽  
Positive Effects ◽  
Early Developmental Stages ◽  
Species Specific ◽  
Early Developmental

The number of sources of anthropogenic magnetic and electromagnetic fields generated by various underwater facilities, industrial equipment, and transferring devices in aquatic environment is increasing. These have an effect on an array of fish life processes, but especially the early developmental stages. The magnitude of these effects depends on field strength and time of exposure and is species-specific. We review studies on the effect of magnetic fields on the course of embryogenesis, with special reference to survival, the size of the embryos, embryonic motor function, changes in pigment cells, respiration hatching, and directional reactions. We also describe the effect of magnetic fields on sperm motility and egg activation. Magnetic fields can exert positive effects, as in the case of the considerable extension of sperm capability of activation, or have a negative influence in the form of a disturbance in heart rate or developmental instability in inner ear organs.

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