The fisheries of the lower reaches Tigris river, north Qurna in Basrah Governorate have been analyzed during period from January to December 2005. fishing boats used there varied lengths form 5 10m, which 50% were motorized with 25-75 HP. Seine and drift gill nets are main gears used, their ranged 100 200m mesh sizes 14-100mm 7-32mm for seine respectively. number fishermen each boat 1 7. Twenty...

We investigated whether two kinases critical for survival during periods of energy deficiency in anoxia-intolerant mammalian species, AMP-activated kinase (AMPK), and protein kinase B (AKT), are equally important for hypoxic/anoxic survival in the extremely anoxia-tolerant crucian carp (Carassius carassius). We report that phosphorylation of AMPK and AKT in heart and brain showed small changes ...

This report documents a case of spontaneously occurring gonadal neoplasm in a crucian carp (Carassius carassius L.) caught in the wild. On the basis of the histopathological findings, the neoplasm was diagnosed as a mixed germ cell-stromal testicular neoplasia (gonadoblastoma). Teleosts generally resemble other vertebrates in their basic susceptibility to developing neoplastic lesions. A large ...

Crucian carp (Carassius carassius) is an excellent vertebrate model for studies on temperature adaptation in biological excitable membranes, since the species can tolerate temperatures from 0 to +36 degrees C. To determine how temperature affects the lipid composition of brain, the fish were acclimated for 4 wk at +30, +16, or +4 degrees C in the laboratory, or seasonally acclimatized individua...

Honghu Lake is the seventh largest freshwater lake in China, and fishery is one of the most important economic sources for local inhabitants. Toxic metal concentrations in muscle of all analyzed fish species captured from Honghu Lake were generally below China standards, except Cr in crucian carp. The average concentrations were decreased in the following order, Zn (14.65 mg/kg) > Cr (1.25 mg/k...

Is DNA replication/cell proliferation in vertebrates possible during anoxia? The oxygen dependence of ribonucleotide reductase (RNR) could lead to a stop in DNA synthesis, thereby making anoxic DNA replication impossible. We have studied this question in an anoxia-tolerant vertebrate, the crucian carp (Carassius carassius), by examining 5'-bromo-2'-deoxyuridine incorporation and proliferating c...