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Abstract Detail

Pollination Biology

Ramírez-Morales, María del Carmen [1], Figueroa-Castro , Dulce Maria [2], Rivas-Arancibia, Sombra Patricia [1].

Floral visitors and functional groups of pollinators of two annual plants in a xeric habitat in Mexico.

Pollination interactions assure the reproduction of plants as well as the maintenance of diversity within the ecosystems. Although annual plants are very important within natural ecosystems, there is a lack of knowledge on the composition of their floral visitors and their functional groups of pollinators. In this study, we identify and compare the communities of floral visitors of two annual, creeping plant species, Allionia incarnata L. (Nyctaginaceae) and Portulaca pilosa L. (Portulacaceae) in the Zapotitlán Valley, Puebla, Mexico. Moreover, we determine the functional group of pollinators for each plant species. In order to do this, we conducted collections of the floral visitors of both plant species during three consecutive days from 0800 to 1400 hrs. Collected insects were sacrificed, mounted and identified. We determined species richness, abundance and diversity of floral visitors for each plant species. A c2 test was used to compare species richness and abundance of insects between plant species; whereas a t-Hutchenson test was used to compare diversity. Similarity in the composition of the community of floral visitors was determined through the estimation of the Sorensen index. The functional group of pollinators for each plant species was determined with a canonical correspondence analysis (CCA). This analysis was conducted using measurements of 21 insect morphological traits from the most abundant floral visitors and 20 floral traits from each plant species. A total of 270 and 43 individual insects were collected visiting the flowers of A. incarnata L. and P. pilosa L., respectively. The most abundant visitor to both plant species was Listrus sp. (Coleoptera: Melyridae: Dasytinae). Results from the CCA together with the relative abundance of the floral visitors indicate that Listrus sp. is the functional pollinator of both A. incarnata L. and P. pilosa L.

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1 - Universidad Autónoma de Puebla,, Escuela de Biología, Edif. 112A, Ciudad Universitaria, Av. San Claudio y Blvd. Valsequillo s/n San Manuel, Puebla, Puebla , 72570, Mexico
2 - Universidad Autónoma De Puebla, Escuela De Biología, Blvd. Valsequillo Y Av. San Claudio, Edif. 112A, Ciudad Universitaria, Col. Jardines De San Manuel, Puebla, N/A, 72570, Mexico

Canonical correspondence analysis
Creeping plants
Insect community
Similarity index
species richness.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Eyrie/Boise Centre
Date: Monday, July 28th, 2014
Time: 5:30 PM
Number: PPL003
Abstract ID:623
Candidate for Awards:None

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