Thermal Preference by &amp;lt;i&amp;gt;Mesocyclops ogunnus&amp;lt;/i&amp;gt; (Onabamiro, 1957)

M Gophen

doi:10.4236/oje.2015.52002

Abstract

In this work, the thermal response of Mesocyclops ogunnus was experimentally studied. Temperature was the only one parameter that was tested. Other parameters, such as food quality and availability, light conditions, predation pressure, and water mass motions were not included in the study. Organisms were collected in Lake Kinneret and the experiments were carried out under diffused light, 12/12 hours light/dark conditions. In the experimental system, the organisms were exposed to different temperatures of 15℃, 25℃, 27℃, and 30℃ with open pathway to migrate according to temperature preference. The preference of upper thermal range (25℃, 27℃, 30℃) by copepodite and adult stages was documented.

Highlights

Mesocyclops leuckarti (Claus) is the most common cyclopoid Copepod in Lake Kinneret (Israel) which averagely produces >30% of the lake zooplankton biomass
Many aspects of the eco-physiology of this zooplankter were widely studied by the author and others, information about thermal preference is an impact of sole parameter of temperature
The impact of temperature on the metabolism of M. ogunnus in Lake Kinneret and other Copepods was documented among others by Gophen [4]-[6], Gophen and Azoulay [7], and Vijverberg [8]

Summary

Introduction

Mesocyclops leuckarti (Claus) is the most common cyclopoid Copepod in Lake Kinneret (Israel) which averagely produces >30% of the lake zooplankton biomass. The name of this copepod was modified to Mesocyclops ogunnus (Onabamiro) [1]-[3]. Many aspects of the eco-physiology of this zooplankter were widely studied by the author and others, information about thermal preference is an impact of sole parameter of temperature. This paper describes the thermal effect on locomotive response of M. ogunnus in laboratory studies where using a single parameter of temperature was tested

Methods

Results

Discussion

Conclusion