Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors
Visualitza/Obre
Autor/a
Solovyev, M. M.
Izvekova, G. I.
Kashinkaya, E. N.
Gisbert, E.
Data de publicació
2017-10-09ISSN
0018-8158
Resum
The values of pH in the digestive tracts of 20 freshwater fish species inhabiting various Russian Federation waterbodies were studied. Only in six species (Coregonus lavaretus, Coregonus migratorius, Catostomus catostomus, Carassius gibelio, Rutilus rutilus, Leuciscus leuciscus) out of 20 species, the differences in pH values between different regions of the intestine were significant. Feeding habits, feeding frequency, and gut fullness in fish affected pH values. Temperature was one of the most important factors affecting pH values. During cold seasons (spring and fall; average water temperature: 8–10 and 5–6○C, respectively), the pH values in fish guts were higher than that in the summer seasons(water temperature 22–25°C) for C. gibelio, Perca fluviatilis, Cyprinus carpio, L. leuciscus, and R. rutilus from the Chany Lake. Similar results (lower pH values in intestine at higher water temperatures) were also obtained for C. gibelio in warmer years in comparison to colder years in the same waterbody and in L. leuciscus and P. fluviatilis in the different waterbodies with different water temperatures. It is hypothesized that dependence of pH in fish gut on temperature may serve as a regulatory mechanism for maintaining the activities of hydrolytic enzymes at the required level for their successful functioning.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
59 - Zoologia
Pàgines
43
Publicat per
Springer
Publicat a
Hydrobiologia
Citació
Solovyev, M. M., G. I. Izvekova, E. N. Kashinskaya, and E. Gisbert. 2017. "Dependence Of Ph Values In The Digestive Tract Of Freshwater Fishes On Some Abiotic And Biotic Factors". Hydrobiologia 807 (1): 67-85. Springer Nature. doi:10.1007/s10750-017-3383-0.
Número de l'acord de la subvenció
Federal Fundamental Scientific Research Program for 2013-2020/ /VI.51.1.5/RU/ /
Programa
Aqüicultura
Aquest element apareix en la col·lecció o col·leccions següent(s)
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