How would counter-current selection in fish gills be beneficial for an animal trying to get rid of CO2? What is the meaning of "diffusion limited"? Explain the Brownian movement and how it influences molecules moving in solution. How does a marine fish maintain its osmotic potential?
Both diffusion across the membrane of the secondary lamellae and diffusion inside the water flowing through the interlamellar spaces may limit gas exchange in fish gills. For both component processes, this limitation is expected to be higher for O2 than for CO2 because of the lower solubility of...
1990. A model for exchange of organic chemicals at fish gills: flow and diffusion limitations. Aquat. Toxicol. 18:175-198.Erickson RJ, McKim JM. 1990. A model for exchange of organic chemicals at fish gills: Flow and diffusion limitations. Aquat Tox- icol 18:175-198....
Countercurrent exchange increases diffusion of oxygen between water and blood in fish gills. How? When someone sneezes or coughs, abdominal muscles contract suddenly, pushing the diaphragm upward. After reviewing the discussion of the respiratory cycle, explain why this change f...
Hills, B.A., Hughes, G.M., and Koyama, T., Oxygenation and deoxygenation kinetics of red cells in isolated lamellae of fish gills,J. Exp. Biol., 1982, vol. 98, p. 269. CASPubMedGoogle Scholar Huxley, V.H. and Kutchai, H., The effect of the red cell membrane and a diffusion...
Aeration of the gills is maintained during the injection procedure by first bringing the fish into a surgical plane of anesthesia, which allows slow ... MD Kinkel,SC Eames,LH Philipson,... - 《J Vis Exp》 被引量: 146发表: 2010年 ...
Infreshwaterfish,thebloodismoreconcentratedthanthesurroundingwater Asaresultthefishtakesinwaterbyosmosis Notsomuchthroughtheskin,whichisthick, butthroughthegillswhichhaveaverythin membrane Trout Freshwaterfish 14 Thefishgetsridoftheexcesswaterbymeansofitskidneys ...
gillshistologyTinca tincatriploidImage analysis of sagittal sections of gill lamellae of diploid and triploid tench Tinca tinca revealed the blood and water diffusion distance in diploids (2·07 μm) to be significantly higher than that of their triploid siblings (1·46 μm; P < 0·01). ...
In Notopterus chitala, the diffusing capacity of gills increased from 0.00094 and 0.07208 mlO2 min-1 mmHg-1 and of swim bladder from 0.00036 to 0.02446with gradual increase in body weight from 1.2 to 1435.0 g The slope value (b) were found to be 0.62113 and 0.64957 respectively for water...
gillsin situ hybridizationMarteilia refringensmusselEarly weaning in spotted sand bass larvae, Paralabrax maculatofasciatus , was evaluated, testing a combination of two weaning times, 17 and 22 d after hatching (d.a.h.), and three different microparticulate diets. Protein in diets was...