Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors

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, t...

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Published in:Hydrobiologia
Main Authors: Izvekova, G. I., Kashinskaya, Elena N., Gisbert, Enric, Solovyev, Mikhail M.
Format: Article in Journal/Newspaper
Language:English
Published: 2018
Subjects:
Online Access:https://doi.org/10.1007/s10750-017-3383-0
https://openrepository.ru/article?id=279963
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spelling ftneicon:oai:rour.neicon.ru:rour/279963 2023-05-15T15:53:42+02:00 Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors Izvekova, G. I. Kashinskaya, Elena N. Gisbert, Enric Solovyev, Mikhail M. 2018 https://doi.org/10.1007/s10750-017-3383-0 https://openrepository.ru/article?id=279963 eng eng vtls:000634054 doi:10.1007/s10750-017-3383-0 https://openrepository.ru/article?id=279963 Hydrobiologia. 2018. Vol. 807, № 1. P. 67-85 пресноводные рыбы пищеварительный тракт пищевые привычки статьи в журналах info:eu-repo/semantics/article 2018 ftneicon https://doi.org/10.1007/s10750-017-3383-0 2020-07-21T12:28:16Z 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. Article in Journal/Newspaper Catostomus catostomus NORA (National aggregator of open repositories of Russian universities) Hydrobiologia 807 1 67 85
institution Open Polar
collection NORA (National aggregator of open repositories of Russian universities)
op_collection_id ftneicon
language English
topic пресноводные рыбы
пищеварительный тракт
пищевые привычки
spellingShingle пресноводные рыбы
пищеварительный тракт
пищевые привычки
Izvekova, G. I.
Kashinskaya, Elena N.
Gisbert, Enric
Solovyev, Mikhail M.
Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors
topic_facet пресноводные рыбы
пищеварительный тракт
пищевые привычки
description 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.
format Article in Journal/Newspaper
author Izvekova, G. I.
Kashinskaya, Elena N.
Gisbert, Enric
Solovyev, Mikhail M.
author_facet Izvekova, G. I.
Kashinskaya, Elena N.
Gisbert, Enric
Solovyev, Mikhail M.
author_sort Izvekova, G. I.
title Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors
title_short Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors
title_full Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors
title_fullStr Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors
title_full_unstemmed Dependence of pH values in the digestive tract of freshwater fishes on some abiotic and biotic factors
title_sort dependence of ph values in the digestive tract of freshwater fishes on some abiotic and biotic factors
publishDate 2018
url https://doi.org/10.1007/s10750-017-3383-0
https://openrepository.ru/article?id=279963
genre Catostomus catostomus
genre_facet Catostomus catostomus
op_source Hydrobiologia. 2018. Vol. 807, № 1. P. 67-85
op_relation vtls:000634054
doi:10.1007/s10750-017-3383-0
https://openrepository.ru/article?id=279963
op_doi https://doi.org/10.1007/s10750-017-3383-0
container_title Hydrobiologia
container_volume 807
container_issue 1
container_start_page 67
op_container_end_page 85
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