Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors
Ver/Abrir
Autor/a
Solovyev, M. M.
Izvekova, G. I.
Kashinkaya, E. N.
Gisbert, E.
Fecha de publicación
2017-10-09ISSN
0018-8158
Resumen
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.
Tipo de documento
Artículo
Versión del documento
Versión aceptada
Lengua
English
Materias (CDU)
59 - Zoología
Páginas
43
Publicado por
Springer
Publicado en
Hydrobiologia
Citación
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 del acuerdo de la subvención
Federal Fundamental Scientific Research Program for 2013-2020/ /VI.51.1.5/RU/ /
Program
Aqüicultura
Este ítem aparece en la(s) siguiente(s) colección(ones)
- ARTICLES CIENTÍFICS [2831]
Excepto si se señala otra cosa, la licencia del ítem se describe como http://creativecommons.org/licenses/by-nc-nd/4.0/