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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fttomskstateuniv:vtls:000634054 2024-09-15T18:01:48+00:00 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 http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000634054 eng eng vtls:000634054 doi:10.1007/s10750-017-3383-0 http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000634054 Hydrobiologia. 2018. Vol. 807, № 1. P. 67-85 пресноводные рыбы пищеварительный тракт пищевые привычки статьи в журналах info:eu-repo/semantics/article 2018 fttomskstateuniv https://doi.org/10.1007/s10750-017-3383-0 2024-07-09T04:27:17Z 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 Tomsk State University Research Library Hydrobiologia 807 1 67 85 |
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Tomsk State University Research Library |
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fttomskstateuniv |
language |
English |
topic |
пресноводные рыбы пищеварительный тракт пищевые привычки |
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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 http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000634054 |
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 http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000634054 |
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 |
_version_ |
1810438871428628480 |