Received: 28 August 2020
Accepted: 2 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: The study was approved by the Zoology and Environmental Biology Postgraduate Board (UNN) in line with the Ethical Committee and the International Guidelines for Handling of Animals (UNN research policy November, 2013).
: Not applicable.
: The authors declare that they have no competing interests.