SURVEY ON POPULATION STRUCTURE OF BIGEYE KILKA CLUPEONELLA GRIMMI IN MAZANDARAN PROVINCE COASTS

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ALIASGHARI M.; GHOBADI SH.; KHODABAKHSH E.

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Journal: Journal of Renewable Natural Resources Research Year:2011 | Volume:2 | Issue:3 (SERIAL NUMBER 5) Page(s): 57-70

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Title

SURVEY ON POPULATION STRUCTURE OF BIGEYE KILKA CLUPEONELLA GRIMMI IN MAZANDARAN PROVINCE COASTS

Author(s)

ALIASGHARI M. | GHOBADI SH. | KHODABAKHSH E. | Issue Writer Certificate

Keywords

CLUPEONELLA GRIMMIQ2

CASPIAN SEAQ2

AGEQ2

GROWTHQ1

SEX RATIOQ2

Abstract

The aim of the present study is surveying on the population structure of bigeye kilka (CLUPEONELLA GRIMMI Kessler, 1877) in the southern CASPIAN SEA in Mazandaran Province coasts. In this study which was conducted during 2010, 1043 samples were fortnightly provided from Babolsar fishing harbor in Mazandaran province. Length, weight, sexuality and AGE of samples were determined. AGE was determined using sagitta otoliths. The results were compared with previous years. The GROWTH parameters were calculated as (L∞=149.7mm, k=0.32 yr-1, t0=-1.20 yr) for females and (L∞=136.5mm, k=0.65yr-1, t0=-0.24yr) for males. Length-weight relationship in females was W=0.000006 FL3.043 (R2=0.813) and in males was W=0.0000006 FL3.079 (R2=0.834) which GROWTH pattern in both sexes was positive allometric. Bigeye kilka population was constituted of 6 AGE groups, including 2-7 years. Mean AGE of females and males were 4.09±1.25 and 3.61±1.45 years, respectively. In females, four-year- old fish were dominant with 33.34 percent relative abundance. In males, three-year- old fish were dominant with 47.45 percent relative abundance. Male-female SEX RATIO was 0.656: 1 and females were dominant. Results showed that in recent years, bigeye kilka population has become older and their length and weight have increased. According to the biological parameters and comparing with the previous years, bigeye kilka has not been very affected by the CASPIAN SEA pelagic changes, due to inhabiting in deep regions.

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APA: Copy

ALIASGHARI, M., GHOBADI, SH., & KHODABAKHSH, E.. (2011). SURVEY ON POPULATION STRUCTURE OF BIGEYE KILKA CLUPEONELLA GRIMMI IN MAZANDARAN PROVINCE COASTS. RENEWABLE NATURAL RESOURCES RESEARCH, 2(3 (SERIAL NUMBER 5)), 57-70. SID. https://sid.ir/paper/212271/en

Vancouver: Copy

ALIASGHARI M., GHOBADI SH., KHODABAKHSH E.. SURVEY ON POPULATION STRUCTURE OF BIGEYE KILKA CLUPEONELLA GRIMMI IN MAZANDARAN PROVINCE COASTS. RENEWABLE NATURAL RESOURCES RESEARCH[Internet]. 2011;2(3 (SERIAL NUMBER 5)):57-70. Available from: https://sid.ir/paper/212271/en

IEEE: Copy

M. ALIASGHARI, SH. GHOBADI, and E. KHODABAKHSH, “SURVEY ON POPULATION STRUCTURE OF BIGEYE KILKA CLUPEONELLA GRIMMI IN MAZANDARAN PROVINCE COASTS,” RENEWABLE NATURAL RESOURCES RESEARCH, vol. 2, no. 3 (SERIAL NUMBER 5), pp. 57–70, 2011, [Online]. Available: https://sid.ir/paper/212271/en

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