+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Effects of stress on plasma homeostasis, endolymph chemistry, and check formation during otolith growth in rainbow trout (Oncorhynchus mykiss)

, : Effects of stress on plasma homeostasis, endolymph chemistry, and check formation during otolith growth in rainbow trout (Oncorhynchus mykiss). Canadian Journal of Fisheries and Aquatic Sciences 61(7): 1247-1255

This is the first study in which the effects of an external stress were analysed at different levels: plasma homeostasis, endolymph chemistry, and otolith growth. Stress was applied to rainbow trout (Oncorhynchus mykiss) by exposure to Cl2 gas. In the plasma of Cl2-stressed trout, Na+ and Cl- decreased (70 mmolL-1) and K+ increased (2.0 mmolL-1), whereas total Ca was unchanged. A slight hypercapny (+2.4 mmHg (1 mmHg = 133.322 Pa)) was observed related to a significant rise (40[percent]) in total CO2 without pH variation. In the endolymph, Na+ and Cl- also decreased, whereas other parameters (K+, PO43-, Mg, and, peculiarly, total Ca) remained stable. The important effect provoked by Cl2 stress in endolymph was an increase of proteins (factor of 2.6) and total CO2 (factor of 3.1) concentrations at the proximal side of the endolymph. The stress induced a decrease in otolith growth rate and produced a discontinuity (check) in the microstructure pattern of the otolith characterized by a large D zone. The variations in the endolymph composition are discussed and we propose that they result not only from changes in plasma concentrations, but also from changes (organic and crystallization) in otolith deposition. Reprinted by permission of the publisher.


DOI: 10.1139/f04-059

Other references

Anthony E.McIntyre and Judith W.McIntyre, 1974: Spots before the eyes an aid to identifying wintering loons. The Auk 91(2): 413-415

Rogissart, F.; Malka, G.; Guyenne, C., 1997: Decubitus ulcers of the buttocks: our therapeutic approach in the course of the last ten years. Report of 32 cases. The authors conducted a retrospective study of 80 cases of pressure sores of the pelvic girdle. This study was designed to evaluate the therapeutic approach, surgical reconstruction techniques and their results at 1 year. Only 32 patients (40%) un...

Kacić, M.; Mardesić, D., 1979: Serum-immunoglobulins A, G and M in children with coeliac disease. Lijecnicki Vjesnik 101(12): 755-756

Beck, A.T., 1964: Thinking And Depression. Ii. Theory And Therapy. Archives of General Psychiatry 10: 561-571

Suthienkul, O.; Ishibashi, M.; Iida, T.; Nettip, N.; Supavej, S.; Eampokalap, B.; Makino, M.; Honda, T., 1995: Urease production correlates with possession of the trh gene in Vibrio parahaemolyticus strains isolated in Thailand. A total of 489 Vibrio parahaemolyticus isolates from patients in Thailand with diarrhea was examined for the presence of thermostable direct hemolysin (TDH) and TDH-related hemolysin genes (tdh and trh, respectively), their serovars, TDH productio...

Morozumi, K.; Yoshida, A.; Suganuma, T.; Satoh, K.; Aoki, J.; Oikawa, T.; Fujinami, T.; Uchida, K.; Yamada, N.; Orihara, A., 1989: Morphological analysis of glomerular lesions in renal transplants immunosuppressed with cyclosporine A (CYA): has CYA induced a new transplant glomerular lesion?. Transplantation Proceedings 21(1 Pt 1): 282-285

Patel, J.R., 1979: Invasion of mouse brain by Mount Elgon bat virus. Mount Elgon bat virus killed mice up to 13 days of age when given intranasally. Virus reached the brain of these mice via the olfactory nerve route without obvious multiplication in any tissues other than the nasal mucosa of 1- to 6-day-old mice a...

Smolders, D.;, B.; Pouillon, M.; Casselman, J.; D.S.hepper, A.M., 2002: Idiopathic hypertrophic intracranial pachymeningitis. Jbr-Btr 85(3): 154-155

Huang, Y.; Li, W.; Yang, B.; Zhu, H-Li.; Dang, Y-Hui., 2011: Individualizing treatment of refractory and relapsed ITP in adults and its development of study. Idiopathic thrombocytopenic purpura (ITP) is a common hematological disease. It bleeds with peripheral blood platelet reduction as the main clinical manifestation, and manifests a chronic history in adult people. 11% - 35% ITP patients develop int...

Herman, M.G.; Mills, M.D.; Gillin, M.T., 2003: Reimbursement versus effort in medical physics practice in radiation oncology. The changes in health care reimbursement have the potential to affect the availability of quality medical physicist service in patient care. A survey was conducted by the AAPM Professional Council and the ACMP to collect cost information for speci...