Ants Associated to Loranthaceae in an Agroecosystem Based on Cocoa Trees in Nkolbisson (Yaounde: Cameroon)

Abstract

The present study was carried out in order to identify the ant fauna and her potential role as auxiliary of an agricultural system based on cocoa trees leeched by Loranthaceae, in Nkolbisson neighborhood in Yaoundé (Cameroon). The work was conducted from May to September 2015. An inventory of all woody species and the associated ant fauna was carried out beforehand, followed by an inventory of the ant fauna associated couples Theobroma cacao/Loranthaceae during periods of non-flowering, flowering and fruiting Loranthaceae. We inventoried a total of 187 plants of which 44 (23.53%) were parasitized by flowering-shrub epiphytes (Loranthaceae). Theobroma cacao (cocoa) appeared to be the most abundant species (122 plants) followed by Dacryodes edulis (16 safou trees) and Mangifera indica (15 mango trees). Three species of Loranthaceae were identified: Tapinanthus preussii (Engler) Van Tieghem and Phragmanthera capitata (Sprengel) S. Balle which both attack Theobroma cacao (cocoa tree) and Tapinanthus bangwensis (Engl.et. Krause) Denser which attacks mainly forest type trees. Five sub-families of ants (Pseudomyrmicinae, Dolychoderinae, Ponerinae, Formicinae and Myrmicinae) divided into 16 genera and 35 species were recorded throughout the agrosystem. Tetramorium acculeatum has emerged as the most dominant ant species on both T. preussii and P. capitata. Monitoring of the ant foraging activity during flowering and fruiting Loranthaceae shows they participate in the flowers fall.

Ecology of Myrmecofauna (Genus: Crematogaster) Associated to Helixanthera mannii (Oliv.) Danser (Loranthaceae) to Cocoa Trees in Oboa: Center Region of Cameroon, Africa

“…However, this is the first known case of occupation of this species on cocoa trees in Cameroon. The work of Mony et al (2009), Dibong et al (2011), Lodoh et al (2013, Ondoua et al (2016), andJueya et al (2019) rather reported the presence of Phragmanthera batangue, Tapinanthus preussii, Tapinanthus bangwensis as well as Phragmanthera capitata as Loranthaceae recorded respectively in the camp of the chiefdom of Ndogbong in Douala, of Sodecao in Nkoemvone and of Yaounde in Nkolbisson.…”