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Comparison of morphometric and morphomeristic characteristics between male and female of siah mahi (Capoeta capoeta) in Talar River of the Mazandaran Province
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Nafiseh Johari   , Mohammad Kazemian , Maryam Shapoori , Saber Vatandoost |
| Islamic Azad University, Tehran, Iran |
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Abstract: (6624 Views) |
| In this study 239 Capoeta capoeta were hunted from Talar River in sub branch of Tajoon from August 2006 till July 2007. 26 morphometric and 7 meristic characteristics were studied in this investigation. Results were analyzed with SPSS 16 software under T-test and PCA. According to the results, the average of changes coefficient of morphometric and meristic characteristics for Capoeta capoeta in male were 18.09 and 11.64 respectively and in female 13.59 and 10.14 respectively. For the morphometric characteristics , 9 factors that accounted for about 79.57 percent of diversity characteristics and from the morphometric characters, 2 factors that accounted for 50.87 percent of variation within genus were separated. Also, there was not observed any significant difference in the morphometric and meristic characteristics between male and female (p 0.05). Studying on the population structure of Capoeta capoeta showed that age of fishes were ranging from 0+ to 3+ years. Intensive correlation was observed between length and weight in male (r2=0.928) and female (r2=0.967). According to the calculated regression coefficient (b) from length and weight relationship and results of determining growth pattern by Pauli methods, the growth pattern in Capoeta capoeta was negative allometric in male and positive allometric in female . Finally , results showed that there were significant difference according to sex in Capoeta capoeta in morphometric factors, while these differences were less in the meristic factors that can be due to environmental factors such as temperature and salinity on the morphometric factors that do not effect on the meristic factors because these factors are under controls of genetical parameters.
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| Keywords: Capoeta capoeta, Tajoon River, Morphometric, Meristic |
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Full-Text [PDF 2018 kb]
(3016 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2014/02/6 | Accepted: 2014/02/6 | Published: 2014/02/6
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