scholarly journals Differences in some cranial bones between two Cyprinidae species, Common carp Cyprinus carpio (Linnaeus, 1758) and Crucian Carp Carassius carassius (Linnaeus, 1758) Collected from Tigris River, Iraq

2021 ◽  
Vol 15 (3) ◽  
pp. 225-237
Author(s):  
Muhammad Inad Ghazwan
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Aquatic Environment ◽  
Crucian Carp ◽  
Diagnostic Study ◽  
Carassius Carassius ◽  
Tigris River ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Crucian Carp Carassius Carassius

The present study attempts to identify some of the differences between the skull bones of two species Cyprinus carpio and Carassius carassius, which belong to the Cyprinidae family. The study is a taxonomic diagnostic study between the two species which are considered local fish abundant in the Iraqi aquatic environment

scholarly journals Utilization of the Ethanol Pathway in Carp Following Exposure to Anoxia

1983 ◽  
Vol 104 (1) ◽  
pp. 73-78 ◽  
Author(s):  
IAN A. JOHNSTON ◽  
LYNNE M. BERNARD
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Crucian Carp ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Progressive Hypoxia ◽  
Wet Weight ◽  
Glycogen Utilization ◽  
Glycogen Stores ◽  
Myotomal Muscle

1. Crucian carp (Carassius carassius L.) and Common carp (Cyprinus carpio L.) were subjected to 2h progressive hypoxia followed by up to 6 h anoxia in closed respirometers at 15°C. 2. The concentrations of glycogen, glucose, phosphoryl creatine, alanine, succinate, lactate, ethanol and ammonia were determined in whole Crucian carp following exposure to both hypoxia and anoxia. 3. Ethanol and lactate were the main anaerobic end products. Glycogen utilization during anoxia amounted to 2mmol glucose equivalents.kg wet weight−1 h−1. Around 85% of the ethanol produced (2.8mmolkg−1h−1) was excreted. Lactate accumulation (0.7 mmol kg−1 h−1) was only sufficient to account for 18.5% of the glycogen stores utilized. Ammonia production(0.2 mmol.kg body wt−1 h−1) was independent of the environmental oxygen availability. 4. Ethanol concentrations (μmol.g wetwt−1) were 7 in red myotomal muscle, 4 in white myotomal muscle, and 2 in liver after 6h anoxia. 5. In contrast to Crucian carp, Common carp (Cyprinus carpio L.) did not produce ethanol at 15°C even after near lethal exposure to anoxia (5–6 h).

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