Patterns in diurnal co-occurrence in an assemblage of hoverflies (Diptera: Syrphidae).

Détails

ID Serval
serval:BIB_DF79EF9FFB4F
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Patterns in diurnal co-occurrence in an assemblage of hoverflies (Diptera: Syrphidae).
Périodique
European Journal of Entomology
Auteur(s)
D'Amen M., Birtele D., Zapponi L., Hardersen S.
ISSN
1210-5759
Statut éditorial
Publié
Date de publication
2013
Volume
110
Numéro
4
Pages
649-656
Langue
anglais
Résumé
In this study we analyzed the inter-specific relationships in assemblages of syrphids at a site in northern Italy in order to determine whether there are patterns in diurnal co-occurrence. We adopted a null model approach and calculated two co-occurrence metrics, the C-score and variance ratio (V-ratio), both for the total catch and of the morning (8:00-13:00) and afternoon (13:00-18:00) catches separately, and for males and females. We recorded discordant species richness, abundance and co-occurrence patterns in the samples collected. Higher species richness and abundance were recorded in the morning, when the assemblage had an aggregated structure, which agrees with previous findings on communities of invertebrate primary consumers. A segregated pattern of co-occurrence was recorded in the afternoon, when fewer species and individuals were collected. The pattern recorded is likely to be caused by a number of factors, such as a greater availability of food in the morning, prevalence of hot and dry conditions in the early afternoon, which are unfavourable for hoverflies, and possibly competition with other pollinators. Our results indicate that restricting community studies to a particular time of day will result in certain species and/or species interactions not being recorded.
Mots-clé
Diptera, Syrphidae, hoverflies, temporal structure, interspecific relations, null models
Web of science
Création de la notice
24/10/2013 11:17
Dernière modification de la notice
20/08/2019 17:03
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