Leptothrium senegalense is a species of parasitic flatworm that belongs to the family Monorchiidae. It is commonly found in the liver and gallbladder of certain fish species, particularly in freshwater and estuarine areas of West and Central Africa, including the Senegal River.
The adult worm is characterized by a flattened body that measures up to 2.5 cm in length and 1.0 cm in width. It has a ventral sucker at the anterior end, which is used for attachment to the host's liver or gallbladder. The reproductive system of the worm includes a single ovary and testis, with the latter located near the posterior end.
Leptothrium senegalense can cause significant damage to the liver and gallbladder of infected fish, leading to reduced growth, decreased reproductive success, and sometimes even death. In addition, the presence of this parasite in fish can pose a risk to human health, particularly if the fish is consumed raw or undercooked.
Control measures for Leptothrium senegalense in fish include proper handling and cooking of fish, as well as the use of chemical treatments and other management strategies in aquaculture settings.
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