The present study has revealed, for the first time, the presence of the monogenean parasite,
Microcotyloides sp., on the gills of the small scaled terapon fish, Terapon puta, inhabiting the
costal region of the Mediterranean Sea near Damietta province, Egypt. This work was carried out
between May 2006 and April 2007. A total sample of 180 fish specimens, 15 fish a month, were
examined. Seasonally, the prevalence and mean intensity of the Microcotyloides sp. are found to
be 84% and 3.38 parasite/infected fish, respectively. The prevalence of the Microcotyloides sp.
reached its maximum value of 92% in summer and a minimum value of 69% during autumn.
The mean intensity of the Microcotyloides sp. increased to its maximum value of 5 parasite/infected
fish during spring; declined dramatically to reach 3.44 parasite/infected fish during summer and
recorded its lowest value, 2.97 parasite/infected fish during winter. Monthly, fluctuation in the prevalence
of the Microcotyloides sp. recorded two peaks during the year, the first time in February and
the second one in July. Monthly fluctuation in the mean intensity of the Microcotyloides sp. showed
its highest value, 7.41 parasite/infected fish, in May while its lowest one, 2.2 parasite/infected fish,
was recorded in January. The present study has revealed that the correlation between the
mean intensity of the Microcotyloides sp. and the body weight of T. puta fish is positive. The mean
The present study has revealed, for the first time, the presence of the monogenean parasite,Microcotyloides sp., on the gills of the small scaled terapon fish, Terapon puta, inhabiting thecostal region of the Mediterranean Sea near Damietta province, Egypt. This work was carried outbetween May 2006 and April 2007. A total sample of 180 fish specimens, 15 fish a month, wereexamined. Seasonally, the prevalence and mean intensity of the Microcotyloides sp. are found tobe 84% and 3.38 parasite/infected fish, respectively. The prevalence of the Microcotyloides sp.reached its maximum value of 92% in summer and a minimum value of 69% during autumn.The mean intensity of the Microcotyloides sp. increased to its maximum value of 5 parasite/infectedfish during spring; declined dramatically to reach 3.44 parasite/infected fish during summer andrecorded its lowest value, 2.97 parasite/infected fish during winter. Monthly, fluctuation in the prevalenceof the Microcotyloides sp. recorded two peaks during the year, the first time in February andthe second one in July. Monthly fluctuation in the mean intensity of the Microcotyloides sp. showedits highest value, 7.41 parasite/infected fish, in May while its lowest one, 2.2 parasite/infected fish,was recorded in January. The present study has revealed that the correlation between themean intensity of the Microcotyloides sp. and the body weight of T. puta fish is positive. The mean
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