Predator recognition and defence strategies in crucian carp, Carassius carassius

Oikos ◽  
2000 ◽  
Vol 88 (1) ◽  
pp. 200-212 ◽  
Author(s):  
Lars B. Pettersson ◽  
P. Anders Nilsson ◽  
Christer Bronmark
Physiology ◽  
2015 ◽  
Vol 30 (2) ◽  
pp. 116-126 ◽  
Author(s):  
Angela Fago ◽  
Frank B. Jensen

Among vertebrates able to tolerate periods of oxygen deprivation, the painted and red-eared slider turtles ( Chrysemys picta and Trachemys scripta) and the crucian carp ( Carassius carassius) are the most extreme and can survive even months of total lack of oxygen during winter. The key to hypoxia survival resides in concerted physiological responses, including strong metabolic depression, protection against oxidative damage and–in air-breathing animals–redistribution of blood flow. Each of these responses is known to be tightly regulated by nitric oxide (NO) and during hypoxia by its metabolite nitrite. The aim of this review is to highlight recent work illustrating the widespread roles of NO and nitrite in the tolerance to extreme oxygen deprivation, in particular in the red-eared slider turtle and crucian carp, but also in diving marine mammals. The emerging picture underscores the importance of NO and nitrite signaling in the adaptive response to hypoxia in vertebrate animals.


2021 ◽  
Vol 15 (3) ◽  
pp. 225-237
Author(s):  
Muhammad Inad Ghazwan

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


1999 ◽  
Vol 40 (11-12) ◽  
pp. 123-130 ◽  
Author(s):  
J. V. K. Kukkonen ◽  
E. Punta ◽  
P. Koponen ◽  
J. Paranko ◽  
H. Leppänen ◽  
...  

Biochemical and histological biomarkers by the adult crucian carp (Carassius carassius (L.)) living in a biologically treated pulp mill effluent were studied. Enocell pulp mill in Uimaharju, Finland, discharges its effluents through a waste water pond to the River Pielisjoki. This pond harbours an introduced crucian carp population that apparently reproduces on site. The objective of the present study was to measure possible hormonal effects of treated pulp mill effluent on crucian carps living in a wastewater pond. Adult fish were collected for analysis by traps. A reference population was sampled from a small natural pond. Blood and bile samples were taken for analyses of hemoglobin, hematocrit, testosterone, triiodothyronine (T3), thyroxine (T4), vitellogenin, organic chlorine compounds, resin acids and neutral wood-based compounds. In addition, a histological analysis of male gonads was made. The exposed fish had higher concentration of organic chlorine compounds, resin acids and β-sitosterol in bile compared to the reference fish. The same compounds could also be found in sediment of the wastewater pond. The exposed male fish had higher liver somatic index (LSI), lower gonad somatic index (GSI), lower haemoglobin and haemocrit, but higher T3 than in the reference fish. In addition, in an average, increased plasma testosterone concentration and decreased thyroxin (T4) levels were found in the exposed male fish. No vitellogenin production was found in the exposed male fish and some females showed decreased vitellogenin levels. The histological structure of the gonads in the exposed males was normal. The results suggest more anti-estrogenic than estrogenic effects of pulp mill effluents on the crucian carp.


2016 ◽  
Vol 32 (5) ◽  
pp. 866-872 ◽  
Author(s):  
B. Łączyńska ◽  
K. Palińska-Żarska ◽  
J. Nowosad ◽  
M. Biłas ◽  
S. Krejszeff ◽  
...  

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