Talaga S., Delabie J. H. C., Dezerald O., Salas-Lopez A., Petitclerca F., Leroy Céline, Heraultd B., Cereghino R., Dejean A. (2015). A bromeliad species reveals invasive ant presence in urban areas of French Guiana. Ecological Indicators, 58, p. 1-7. ISSN 1470-160X.
Titre du document
A bromeliad species reveals invasive ant presence in urban areas of French Guiana
Année de publication
2015
Auteurs
Talaga S., Delabie J. H. C., Dezerald O., Salas-Lopez A., Petitclerca F., Leroy Céline, Heraultd B., Cereghino R., Dejean A.
Source
Ecological Indicators, 2015,
58, p. 1-7 ISSN 1470-160X
Tank bromeliads, frequently associated with ants, are considered tiodiversity amplifiers' for both aquatic and terrestrial organisms, and thus have a high ecological value. The focal species of this study, Aechmea aquilega, sheltered the colonies of 12 ant species in a Guianese rural habitat where Odontomachus haematodus, associated with 60% of these plants, was the most frequent. Unexpectedly, the ant species richness was higher in a compared urban habitat with 21 species, but two synanthropic and four invasive ants were noted among them. Consequently, we conducted baiting surveys (on the ground, on trees and on trees bearing A. aquilega) as well as complementary surveys using different sampling modes in urban areas to test if A. aquilega is a surrogate revealing the presence of certain invasive ants. During the baiting survey, we recorded four Neotropical and eight introduced invasive ants out of a total of 69 species. Of these 12 invasive species, five were noted by baiting A. aquilega (including two only noted in this way). A bootstrap simulation permitted us to conclude that A. aquilega significantly concentrates certain species of invasive ants. This was confirmed by complementary surveys, where we did not record further species. We conclude that baiting on trees bearing large epiphytes in human-modified, Neotropical areas is a relevant complement to the early detection of invasive ants.
Plan de classement
Sciences du monde végétal [076]
;
Sciences du monde animal [080]
;
Etudes, transformation, conservation du milieu naturel [082]
Description Géographique
GUYANE FRANCAISE
Localisation
Fonds IRD [F B010065249]
Identifiant IRD
fdi:010065249
