Open AccessEvaluation of the diversity of Scolitids (Coleoptera: Curculionidae) in the forest plantations of the central zone of the Ecuadorian littoral
Author(s) -
Malena Martínez,
Jessenia Castro,
Ronald Villamar-Torres,
Mercedes Carranza,
Julio Muñoz-Rengifo,
E.M. Jiménez,
Marcelino Guachambala,
Marcos Heredia-Pinos,
Luz García Cruzatty,
Seyed Mehdi-Jazayeri
Publication year - 2017
Publication title -
ciencia y tecnología
Language(s) - English
Resource type - Journals
eISSN - 1390-4051
pISSN - 1390-4043
DOI - 10.18779/cyt.v10i2.163
Subject(s) - curculionidae , ambrosia beetle , littoral zone , jaccard index , diversity index , biology , forestry , species diversity , botany , geography , ecology , species richness , artificial intelligence , pattern recognition (psychology) , computer science
The species of Scolytinae subfamily have a worldwide distribution, and are found mainly in the Neo-tropic regions. They usually dominate the communities of wood borer insects. The aim of the present study was to determine the diversity among Scolytinae species associated with balsa, teak, rubber and gamhar plantations located in the humid tropical zone of the Ecuadorian littoral. In each plantation seven flight interception traps containing an ethanol / gel mixture were installed, with a collection frequency of 15 days for three months in the dry period. A total of 1437 specimens were collected, represented by Xyleborini, Cryphalini, Corthylini and Ipini tribes. In the four plantations, 18 species of Scolitids were collected, of which 16 were recorded in the balsa plantation, while in the other plantations 10 to 12 species were found. The most abundant Scolitids were Hypothenemus spp., Corthylus spp., Xyleborus affinis, Xyleborinus bicornatulus and Premnobium cavipennis. The Shannon-Wiener diversity index was higher in the balsa culture (H’= 2.37) and lower in Teak (H’= 1.57). The Jaccard similarity index was higher among the teak and rubber plantations (Cj = 0.9090) while the balsa plantation obtained less similarity with respect to the other three plantations. The greatest diversity of Scolitids was recorded in the balsa plantation, which is a native species, unlike the other forest species, which are exotic, indicating that the diversity would be influenced by the host tree and the location where they are found.