A STUDY OF SOME ECOLOGICAL AND BIOLOGICAL CHARACTERS OF ROACH (RUTILUS RUTILUS CASPICUS) IN ANZALI WETLAND

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NADDAFI R.; MAJAZI AMIRI B.; KARAMI M.; HASANZADEH KIABI BAHRAM; ABDOLI A.

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Journal: IRANIAN JOURNAL OF NATURAL RESOURCES Year:2002 | Volume:55 | Issue:2 Page(s): 225-241

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Information Journal Paper

Title

A STUDY OF SOME ECOLOGICAL AND BIOLOGICAL CHARACTERS OF ROACH (RUTILUS RUTILUS CASPICUS) IN ANZALI WETLAND

Author(s)

Keywords

ROACHQ4

RUTILUS RUTILUS CASPICUSQ4

ANZALI WETLANDQ3

AGEQ3

GROWTHQ4

GSIQ4

ABSOLUTE FECUNDITYQ4

Abstract

A study was conducted to determine some ecological and biological characters, including AGE, GROWTH and reproduction in migratory population of ROACH, RUTILUS RUTILUS CASPICUS, in ANZALI WETLAND from early November 1999 to early December 2000. The sampling was done monthly but in the peak of spawning migration (late February to mid April) it was done weekly. Sex ratio in the population was 1:17♂:1♀ Although the sex ratio was not significantly different even at 10% level but the sex ratio for each separate AGE group were significantly different at 0.5%. The correlation between total length, AGE, body weight, and scale radius were significant (P<0.001). Based on the back– calculation, the maximum GROWTH rate was in AGEs 1 and 2. Instantaneous GROWTH rate were the highest at AGEs 1 and 2. Gonadosmatic index (GSI) was AGE-dependent. The peaks for GSI curves were; late February and early March for the males and females. The eggs diameter varied from 0.95 mm to 1.3 mm. The ABSOLUTE FECUNDITY was related to AGE.

Cites

STUDY OF AGE AND GROWTH OF CASPIAN ROACH (RUTILUS RUTILUS CASPICUS) IN GOMISHAN WETLAND (SOUTHEASTERN CASPIAN SEA)

References

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APA: Copy

NADDAFI, R., MAJAZI AMIRI, B., KARAMI, M., HASANZADEH KIABI, BAHRAM, & ABDOLI, A.. (2002). A STUDY OF SOME ECOLOGICAL AND BIOLOGICAL CHARACTERS OF ROACH (RUTILUS RUTILUS CASPICUS) IN ANZALI WETLAND. IRANIAN JOURNAL OF NATURAL RESOURCES, 55(2), 225-241. SID. https://sid.ir/paper/22876/en

Vancouver: Copy

NADDAFI R., MAJAZI AMIRI B., KARAMI M., HASANZADEH KIABI BAHRAM, ABDOLI A.. A STUDY OF SOME ECOLOGICAL AND BIOLOGICAL CHARACTERS OF ROACH (RUTILUS RUTILUS CASPICUS) IN ANZALI WETLAND. IRANIAN JOURNAL OF NATURAL RESOURCES[Internet]. 2002;55(2):225-241. Available from: https://sid.ir/paper/22876/en

IEEE: Copy

R. NADDAFI, B. MAJAZI AMIRI, M. KARAMI, BAHRAM HASANZADEH KIABI, and A. ABDOLI, “A STUDY OF SOME ECOLOGICAL AND BIOLOGICAL CHARACTERS OF ROACH (RUTILUS RUTILUS CASPICUS) IN ANZALI WETLAND,” IRANIAN JOURNAL OF NATURAL RESOURCES, vol. 55, no. 2, pp. 225–241, 2002, [Online]. Available: https://sid.ir/paper/22876/en

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