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Khanipour, A.A., Melnikov, V.N.. (1385). Determination of suitable trap type for the Caspian crayfish, Astacus leptodactylus eichwaldi, in Anzali coastal area, Iran. سامانه مدیریت نشریات علمی, 6(2), 59-76. doi: 10.22092/ijfs.2018.114786
A.A. Khanipour; V.N. Melnikov. "Determination of suitable trap type for the Caspian crayfish, Astacus leptodactylus eichwaldi, in Anzali coastal area, Iran". سامانه مدیریت نشریات علمی, 6, 2, 1385, 59-76. doi: 10.22092/ijfs.2018.114786
Khanipour, A.A., Melnikov, V.N.. (1385). 'Determination of suitable trap type for the Caspian crayfish, Astacus leptodactylus eichwaldi, in Anzali coastal area, Iran', سامانه مدیریت نشریات علمی, 6(2), pp. 59-76. doi: 10.22092/ijfs.2018.114786
Khanipour, A.A., Melnikov, V.N.. Determination of suitable trap type for the Caspian crayfish, Astacus leptodactylus eichwaldi, in Anzali coastal area, Iran. سامانه مدیریت نشریات علمی, 1385; 6(2): 59-76. doi: 10.22092/ijfs.2018.114786

Determination of suitable trap type for the Caspian crayfish, Astacus leptodactylus eichwaldi, in Anzali coastal area, Iran

Iranian Journal of Fisheries Sciences
مقاله 4، دوره 6، شماره 2، فروردین 2007، صفحه 59-76    اصل مقاله (2.78 M)
شناسه دیجیتال (DOI): 10.22092/ijfs.2018.114786
نویسندگان
A.A. Khanipour* ؛ V.N. Melnikov
چکیده
The efficiency of different types of traps for catching of the Caspian Sea crayfish, Astacus leptodactylus eichwaldi, was investigated from Mar. 2002 to Feb. 2003. Totally 56 traps of four most commonly used types, "Rectangular trap", "Round trap", "Opera house trap" in two colors of "black" and "blue", and "Fathoms plus" only in black were installed in depths of 35, 45, 55 and 65 meters along two transects in Anzali coastal area. The results revealed no significant differences (p≥0.05) in the average length; weight and sex ratio among the crayfish in different months and applied traps. However, significant differences (p<0.05) in CPUE of different traps in various months of the study year were observed. Mean annual of CPUE in Opera house traps "blue" was the greatest (5.09±0.29) and the lowest was found in "Fathoms plus" traps (0.28±0.05). In general; all blue color traps performed better catch thanthe black ones. 
کلیدواژه‌ها
CRAYFISH؛ Astacus leptodactylus eichwaldi؛ traps؛ Catch؛ Efficiency؛ Sex ratio؛ Caspian Sea؛ Iran
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تعداد مشاهده مقاله: 160
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