The Morphological Changes in the Sagittae Otoliths of White Sardine’s (Sardinella albella) Population in the Persian Gulf and Oman Sea
Subject Areas :
1 - دانشکده علوم پایه،گروه میکروبیولوژی، واحد زنجان، دانشگاه آزاد اسلامی، زنجان. ایران
Keywords: Sardinella albella, Keywords: Sardine, Clupeidae, the Persian Gulf and Oman Sea,
Abstract :
Inroduction & Objective: Otoliths or ear stones related to balance, movement and hearing. Otoliths are used to determine the age of a considered as an indicator. Growth layers are produced daily at regular intervals setting and natural conditions but environmental fluctuations such as nutrition, activity and thermal changes affect on it. Sardine fishing areas along the southern coast of Iran are along the port of Jask in Hormozgan province East to Bandar Kangan in the eastern part of the province Boshehr. Due to wide dispersal and diverse environments of this species, the variation in morphology of otoliths is not unexpected. The aim of this study was to investigate possible variations in the structure of sagittae otoliths in fish distribution in the Persian Gulf and Oman Sea.Material and MethodDuring the winter and spring 2011 and 2012 63 sample of white Sardines were captured from 3 sites ,Jask area, Qeshm and Lengeh. After biometric studies the left and right sagittae otoliths were extracted and examined. The captured datas were be examined by one way ANOVA and multivariate analysis of variance MANOVA.Results: Statistical analysis traits not found significant differences between the three regions. These results were also confirmed by test post-hoc and Claster analysis. Although some degree of separation between the three regions was observed, but the overlap was more than distinguishing three regions from each other. Conclusions:No significant differences in morphological otoliths in the three region of sampeling can confirms that the population of this species in three sampling sitesare related with each other and mixing took place due to lack of significant differences in this trait is .