Seasonality in Cyclopoids (Crustacea; Copepoda) and rainfall variation of the Forcados River, Nigeria
Investigations into the seasonality of cyclopoid (crustacean: copepoda) with regards to rainfall variations were carried out in Forcados river. Samples were collected by towing two plankton nets of 55µm and 100µm mush sizes at 5knots for 5 minutes behind an engine boat. Meterological station in Warri gave the rainfall data. Centigrade thermometer was used for measuring the surface water temperature. Results showed low temperature range (27.5ºC – 31.5ºC), while that of rainfall was high (25.8-602.6mm).