Present at the event. Were the Vice-Chancellor of the university Prof F.F.O Orumwense represented by DVC Administration Prof. J.O Ehiorobo, the school registrar Mrs A.O.Oshodin, ably represented by Mr. Adodo Liberian , Deans, Directors, Professors ,Emeritus professors, staff and student of the great university of Benin
The lecture with unprecedented attendance had its topic; ZOOPLANKTON: A NECESSITY TO HUMANITY AND THE AQUATIC ENVIRONMENT, delivered by professor (mrs.) charity, chidi, oronsaye JP. A professor of hydrobiology and fisheries biology
Zooplankton consists of floating Animals which drift with the water current and whose swimming power if any serves mainly to keep them afloat. The word “Zooplankton” is derived from the Greek word “Zoon” meaning Animals and “Planktos” meaning “Wanderers” or “drifters”. They are mainly microscopic in size, but few members are macroscopic, such as the Jellyfish and fish Larvae which can be seen with the naked eyes. There are basically two main types of Zooplankton; the Holoplankton (i.e. permanent Zooplankton) and the Meroplankton (i.e. temporary Zooplankton)
.Zooplankton study is of necessity in fisheries, aquaculture and paleolimnological research .Zooplankton generally inhabit the upper and surface layers of the water body. They are found in the Seas, Oceans, Rivers, Lakes, Ponds and Streams.
She said Copepods are part of the Holoplankton (i.e. permanent Zooplankton). They belong to the phylum: Arthropoda, she worked extensively on the copepods, looking at their systematics, taxonomy and ecology. Samples which were collected from Delta State, Edo State, Lagos State and Rivers State
In the course of studying their occurrence and taxonomy, a number of species were recorded for the first time in Nigeria, they are;
- Acartia tonsa- This was found in the brackish water zone of the Warri River
- Nannopus palustris-This occurred at zones of salinity values from 2.0%0 – 18.0%0 in the Warri river
- Oithona nana-This species was obtained from Bennett Island and Burutu in the Warri river system
- Salmincola sp.-This was sampled from the Lagos lagoon (ectoparasite of fishes). It is figured to show the terrible structural modification of the copepod as an ectoparasite in order to be able to attach itself to the host.
In her Further studies and analysis carried out during which two species new to science were found. They have been sent to British Museum for Natural History in London for more taxonomic nomenclature. The species are Pseudobradya sp. Nov and Diarthrodes sp. Nov.
The study of the Ecology of the Zooplankton with regard to their interaction in food chain/food web has shown that they play a pivot role at the secondary production level.
finally she has shown some of the findings and positive contributions to knowledge in the field of Zooplankton. To the good people sitting down, when next they sit at table to enjoy their bread and sardine, they should remember “Zooplankton, a necessity to humanity and the aquatic environment”, because without the zooplankton the sardine will not be there for your enjoyment. To my environmental managers, the result of our experiments has shown that you can use some carnivorous Zooplankton (specifically the copepods) from Ikpoba River in Benin City to control Mosquito Larvae in gutters, ditches and stagnant pools of water in the environment.
She amazed the seated guests with her love for the electron microscope during her PHD days. As she spoke delightedly about her research work and findings, more guests and students trooped in to grace the auspicious occasion. While she spoke unequivocally about the “ecology and the necessity of the zooplankton”, the audience applauded with great joy. Some of her students who were with their textbooks nodded with smiles of confirmation as she spoke .As the event unfolded, she nick-named herself “UNIBEN JONAH” which made the crowd thrilled.
While the acknowledgement speech was given, the crowd cheered as she recognized certain personnel’s within and outside the department. It was a short but very exciting and educative lecture. At the end, the crowd stood up to applaud her while she was being decorated by the DVC Administration.