[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit ::
:: Volume 6, Issue 2 (1-2007) ::
IJFS 2007, 6 Back to browse issues page
Determination of suitable trap type for the Caspian crayfish, Astacus leptodactylus eichwaldi, in Anzali coastal area, Iran
A.A. Khanipour * , V.N. Melnikov
, khanipour@irari.ir
Abstract:   (246 Views)
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. 
Keywords: Crayfish, Astacus leptodactylus eichwaldi, Traps, Catch, Efficiency, Sex ratio, Caspian Sea, Iran
Full-Text [PDF 2850 kb]   (112 Downloads)    
Type of Study: Orginal research papers | Subject: Economy in fishery
Received: 2017/12/9 | Accepted: 2017/12/9 | Published: 2017/12/9
Send email to the article author

Add your comments about this article
Your username or Email:

Write the security code in the box >


XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Khanipour A, Melnikov V. Determination of suitable trap type for the Caspian crayfish, Astacus leptodactylus eichwaldi, in Anzali coastal area, Iran. IJFS. 2007; 6 (2) :59-76
URL: http://jifro.ir/article-1-3102-en.html


Volume 6, Issue 2 (1-2007) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.05 seconds with 31 queries by YEKTAWEB 3638