Short Communication Seasonality in Cyclopoids (Crustacea: Copepoda) and Rainfall Variation of the Forcados River, Nigeria

Authors

  • C. G Oronsaye Zoology Department, University of Benin, Benin City, Nigeria

Keywords:

: cyclopoid seasonality, Cyclopoid: Copepods, rainfall variations , tropical river cyclopoids, Forcados river

Abstract

Seasonality of cyclopoids (Crustacea : Copepoda) with regards to rainfall variations was studied in Forcados river. Samples were collected by towing two plankton nets of 55 mm and 100 mm mesh sizes at 5 knots for 5 min behind an engine boat. Site meteorological observations showed low temperature range (27.5-31.5 °C), with high rainfall (25.8-602.6 mm). Eleven cyclopoid species were identified, which exhibited seasonality due to rainfall variations. High numerical abundance was observed in the rainy season months of June to September, with peak during July. From these observations it is concluded that, seasonality in the tropics is due to rainfall variations.

Downloads

Published

2006-12-25

How to Cite

Oronsaye, C. G. (2006). Short Communication Seasonality in Cyclopoids (Crustacea: Copepoda) and Rainfall Variation of the Forcados River, Nigeria. Biological Sciences - PJSIR, 49(6), 437–439. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/1299

Issue

Vol. 49 No. 6 (2006): Pakistan Journal of Scientific and Industrial Research

Section

Articles