ملخص المقال

This study pertains to biometry and parasitism of the common carp captured in Lake Oubeira. This involved collection of 360 carp specimenwhich were weighed and measured before being dissected to harvest the parasites. The size of the carp in Lake Oubeira varied from 11 to 51cmin length, although more than 70% did not exceed 31cm in length. This fraction of the studied population exhibited isometric growth, with condition factor that did not exceed 1.15.The application of the Von Bertalanffy equation shows that Carps of Lake Oubeira have an asymptotilength of 55.65 cm and a maximum length of 53cm with a growth rate of about 0.22 year
-1
. The Observation of anatomical morphologicacharacters of 869 parasites collected allowed us to identify a Monogenea (Dactylogyrus anchoratus) a Crustacea (Argulus foliaceus), twtapeworms (Bothriocephalus acheilognathi and the larval form of Ligula intestinalis) and nematode (larvae Contracaecum sp.). The latter ireported for the first time in the general cavity of C. carpio originating from Oubeira Lake. The Survey of the evolutionary dynamic oparasitism reveals that Contracaecum sp present throughout the year; and affects over 30% of carp. The Statistical analysis showed that thdistribution of parasites is related to the season and the fish size. The use of principal component analysis shows that water temperature icorrelated positively with the distribution of contracaecum sp, D. anchoratus and A.foliaceus. These parasites were more frequents in summeand autumn when water temperature and suspended material present the highest values, in contrary; water temperature is correlated negativelwith the distribution of B.acheilognathi and L.intestinalis. It appears from this study that the water temperature has a great influence odistribution of parasites.

Key words: C. carpio; Lake oubeira; isometric growth; North east of Algeria; dynamic

معلومات

Item Type:	Journal
Divisions:	» مخبر النظم الإيكولوجية الأرضية والمائية » كلية علوم الطبيعة و الحياة
ePrint ID:	859
Date Deposited:	2017-07-18
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/ar/publication/article/859

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