50 specimens of the Mullets Mugil cephalus were collected from the Libian coastal waters near Misurata city in Libya. 7 different species of trematodes isolated from the intestine of the mullets were briefly described. Haploporus benedenii, Haploporus lateralis, Lecithobotryes putrescens, Saccocoelium tensum, Saccocoelium gohari, Haplosplanchnus caudatus and Haplosplanchnus pachysomus. It is worthy to mention that, the present work is reported for the first time in Libya.
A hematological and biochemical study was coducted on the freshwater fish Oreochromis niloticus and Tilapia zillii. The fish were acclimated to laboratory conditions for two weeks before use. Then the fish were exposed for 12 weeks to a mixture of copper and lead at a ratio 1:1 of the LC 50 of both metals. Hematological and biochemical analyses were carried out every two weeks during the exposure period. Results indicted the following:In the hematological study, there was a significant increase in the total erythrocytes count (RBCs), as well as the hematocrite (Ht) and mean corpuscular hemoglobin concentration (MCHC) in O. niloticus upon exposure to the heavy metals mixture .This increase was observed after 10 weeks for RBCs count, from the 6 th week of exposure till the end of the experiment for Ht and throughout the whole time of exposure for MCHC. For T. zillii, the increase in the RBCs count was noticed at weeks 4,6 and 12; the increase in Ht occurred at weeks 10 and 12; while a decrease in MCHC was noticed during the entire period of exposure. On the other hand, hemoglobin content (Hb) decreased significantly starting from the second week of exposure till the end of the experiment for O. niloticus. Similar decrease was noticed for T. zillii (except the value at 8 weeks of exposure) and continued till the end of the exposure period.Non significant changes were observed in the serum glucose concentration for O.niloticus, while serum glucose was significantly increased in metals treated T. zillii. For both species, non significant changes were noticed in Liver and muscle's glycogen levels. However, serum protein levels were significantly increased in O. niloticus, but changes were non significant in T. zillii. On the other hand, muscle total protein showed a significant decrease after 10 weeks of exposure in O. niloticus. Such significant decrease in muscle total protein of T. zillii appeared only during the 12 th week of exposure. Changes in serum creatinine and uric acid levels in O. niloticus starting from the 8 th week of exposure till the end of the experiment.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.