The effect of water temperature on food transit time and digestive enzymes activity in Caspian kutum (Rutilus kutum) larvae
The present study investigates the effects of water temperature on digestive enzymes activity and food transit time in Caspian kutum (Rutilus kutum) larvae. Caspian kutum larvae (532 ± 0.05 and 543 ± 0.02 mg) were divided into two groups with three replicates and reared at different water temperatur...
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University of Tehran
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doaj-8883572bfe5041a88be65ee322489c1b2020-11-25T02:11:13ZengUniversity of TehranInternational Journal of Aquatic Biology2383-09562322-52702014-07-012313814676The effect of water temperature on food transit time and digestive enzymes activity in Caspian kutum (Rutilus kutum) larvaeNahid Ghysvandi0Abdolmajid Hajimoradloo1Seyed Hossein Hoseinifar2Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, IranDepartment of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.The present study investigates the effects of water temperature on digestive enzymes activity and food transit time in Caspian kutum (Rutilus kutum) larvae. Caspian kutum larvae (532 ± 0.05 and 543 ± 0.02 mg) were divided into two groups with three replicates and reared at different water temperature i.e. 25.6 ± 0.4°C (T1) and 18.4 ± 0.1°C (T2). At the end of the experiment, sampling of intestine was performed at 0, 1, 3, 5, 8, 16, 24 and 30 h after feeding from each treatment. In T2, food was observed until 24 h after feeding and the intestine was empty 29 h after feeding, while in T1 19 h after feeding the intestine was empty. Digestive enzymes activities were higher in T2 treatment. The peaks of trypsin and alkaline phosphatase enzymes activity were found 8 h after feeding in T1, while occurred 16 h after feeding in T2. The highest chymotrypsin and alpha-amylase enzymes activity were observed 5 and 8h after feeding in T1 and T2, respectively. These results confirmed remarkable effects of temperature on food transit time and digestive enzymes activity of Caspian kutum.http://ij-aquaticbiology.com/index.php/ijab/article/view/77Digestive enzyme, Food transit time, Rutilus kutum, Water temperature |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nahid Ghysvandi Abdolmajid Hajimoradloo Seyed Hossein Hoseinifar |
spellingShingle |
Nahid Ghysvandi Abdolmajid Hajimoradloo Seyed Hossein Hoseinifar The effect of water temperature on food transit time and digestive enzymes activity in Caspian kutum (Rutilus kutum) larvae International Journal of Aquatic Biology Digestive enzyme, Food transit time, Rutilus kutum, Water temperature |
author_facet |
Nahid Ghysvandi Abdolmajid Hajimoradloo Seyed Hossein Hoseinifar |
author_sort |
Nahid Ghysvandi |
title |
The effect of water temperature on food transit time and digestive enzymes activity in Caspian kutum (Rutilus kutum) larvae |
title_short |
The effect of water temperature on food transit time and digestive enzymes activity in Caspian kutum (Rutilus kutum) larvae |
title_full |
The effect of water temperature on food transit time and digestive enzymes activity in Caspian kutum (Rutilus kutum) larvae |
title_fullStr |
The effect of water temperature on food transit time and digestive enzymes activity in Caspian kutum (Rutilus kutum) larvae |
title_full_unstemmed |
The effect of water temperature on food transit time and digestive enzymes activity in Caspian kutum (Rutilus kutum) larvae |
title_sort |
effect of water temperature on food transit time and digestive enzymes activity in caspian kutum (rutilus kutum) larvae |
publisher |
University of Tehran |
series |
International Journal of Aquatic Biology |
issn |
2383-0956 2322-5270 |
publishDate |
2014-07-01 |
description |
The present study investigates the effects of water temperature on digestive enzymes activity and food transit time in Caspian kutum (Rutilus kutum) larvae. Caspian kutum larvae (532 ± 0.05 and 543 ± 0.02 mg) were divided into two groups with three replicates and reared at different water temperature i.e. 25.6 ± 0.4°C (T1) and 18.4 ± 0.1°C (T2). At the end of the experiment, sampling of intestine was performed at 0, 1, 3, 5, 8, 16, 24 and 30 h after feeding from each treatment. In T2, food was observed until 24 h after feeding and the intestine was empty 29 h after feeding, while in T1 19 h after feeding the intestine was empty. Digestive enzymes activities were higher in T2 treatment. The peaks of trypsin and alkaline phosphatase enzymes activity were found 8 h after feeding in T1, while occurred 16 h after feeding in T2. The highest chymotrypsin and alpha-amylase enzymes activity were observed 5 and 8h after feeding in T1 and T2, respectively. These results confirmed remarkable effects of temperature on food transit time and digestive enzymes activity of Caspian kutum. |
topic |
Digestive enzyme, Food transit time, Rutilus kutum, Water temperature |
url |
http://ij-aquaticbiology.com/index.php/ijab/article/view/77 |
work_keys_str_mv |
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