1887

n African Zoology - Food habits and trophic resource partitioning among three mormyrid fishes from man-made Lake Ayame, Ivory Coast

Volume 41, Issue 2
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X
This article is unavailable for purchase outside of Africa

 

Abstract

Feeding habits and trophic relationships among three mormyrid species (<I>Petrocephalus bovei, Marcusenius ussheri&lt;/I&gt; and <I>Marcusenius furcidens</I>) were assessed in the man-made Lake Ayame in Ivory Coast. The index of preponderance combining the occurrence and weight percentages of the identified prey items showed that these three mormyrid species mainly feed on invertebrates, especially aquatic insects. <I>Petrocephalus bovei&lt;/I&gt; mainly feeds on chaoborid larvae, whereas both &lt;I&gt;Marcusenius&lt;/I&gt; species preferentially feed on chironomid larvae. This segregation of food items associated with the relative abundance of chironomid larvae may reduce interspecific competition between these three fish species, and may therefore allow their coexistence. Horn's food overlap index revealed highly significant similarities in the trophic spectrum between both &lt;I&gt;Marcusenius&lt;/I&gt; species, and for the dry as well as the rainy season.

Loading full text...

Full text loading...

Loading

Article metrics loading...

/content/afzoo/41/2/EJC18008
2006-10-01
2020-09-23

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error