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Some growth properties of the brown trout Salmo trutta macrostigma (Dumeril, 1858) in Tekederesi, which is a branch feeding the Karasu River, were investigated. The age composition of the population varied between I and V. The population was 64.81% female and 35.19% male and the differences between the sexes were statistcally significant (P < 0.05). The mean fork length and mean body weight of the 54 individuals examined were 16.58 cm and 53.15 g, respectively. The differences between the sexes according to age groups for fork length and total weight were not statistically significant (P > 0.05). The specific and relative growth for length and weight were maximum at the second age. The length-weight relationship of the population was calculated by the least squares method and the logarithmic equation was found to be Log W = -1.4684 + 2.590 Log FL (fork length). The mean condition factor of the population was 1.052, and the differences between the sexes were not statistcally significant (P > 0.05). [ABSTRACT FROM AUTHOR]

Rainbow trout reared in fresh water were exposed to a sublethal concentration of mancozeb (1/2 of LC50 = 1.1 mg/l) at 24 h intervals, for 3 weeks in tanks containing 780 l water under natural light conditions with a constant flow (1.5 l min-1) of aerated dechlorinated tap water at 9-11 °C and with no recirculation. Approximately 2 cc venous blood was drawn from each subject (after weekly exposure) for the determination of hematological parameters, using heparin as an anticoagulant. Hematological parameters were investigated weekly. The findings of this study showed that mancozeb had some effect on the hematological parameters of rainbow trout. It was determined that the use of the pesticide caused a slight increase in red blood cell (RBC) numbers and a decrease in hemoglobin (Hb), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), packed cell volume (PCV), mean corpuscular volume (MCV) and white blood cell (WBC) levels. Significant decreases (P < 0.05) in Hb content and in MCH were observed during exposure to the pesticide. No significant differences were observed in the levels of RBC, MCHC, PCV, MCV and WBC (P > 0.05). The RBCANBC level increased due to the decrease in WBC during the study. [ABSTRACT FROM AUTHOR]

Copyright of Turkish Journal of Veterinary & Animal Sciences is the property of Scientific and Technical Research Council of Turkey and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Turkish Journal of Veterinary & Animal Sciences is the property of Scientific and Technical Research Council of Turkey and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Turkish Journal of Veterinary & Animal Sciences is the property of Scientific and Technical Research Council of Turkey and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)