+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Competition with filamentous fungi and its implication for a gregarious lifestyle in insects living on ephemeral resources

Competition with filamentous fungi and its implication for a gregarious lifestyle in insects living on ephemeral resources

Ecological Entomology ober; 30(5): 556-563

1. Recent studies have demonstrated the existence of positive density dependence in the survival and development of Drosophila (the so-called Allee effect); however the underlying mechanisms of such Allee effects have remained elusive. Competition with filamentous fungi have often been suggested to be involved in causing high mortality at low larval density, but it has not yet been explicitly tested if the well known spatial aggregation of insect eggs yields a fitness benefit for the developing larvae in the presence of noxious moulds.2. Using Drosophila melanogaster, the present study tested whether larval survival is greater in aggregations when confronted with various combinations of three representative mould species (Aspergillus, Alternaria, and Penicillium) and a head start for fungal development.3. High rates of fungal-dependent mortality and significant positive density-dependent larval survival (i.e. Allee effects) were observed when larvae were confronted with food resources containing established colonies of Aspergillus or Alternaria. Neither the simultaneous transfer of Aspergillus or Alternaria spores with larvae to food patches nor food infections with Penicillium affected insect larval development.4. Significant correlations between mould growth and larval survival could be identified, although the patterns that emerged were shown to be inconsistent when the effects were compared between fungal species and fungal priority. Because mould growth only partly explained larval survival, the influence of other fungal-borne factors, e.g. mycotoxins, needs to be elucidated in order to understand the mechanistic basis of insect-mould interactions.5. These results are the first to argue convincingly for moulds being involved in mediating Allee effects for insects on ephemeral resources; however they also demonstrate an unexpected diversity in insect-mould interactions. Considering this diversity may be important in understanding insect spatial ecology.

(PDF emailed within 0-6 h: $19.90)

Accession: 004084070

Download citation: RISBibTeXText

DOI: 10.1111/j.0307-6946.2005.00722.x

Related references

Competition with filamentous fungi and its implication for a gregarious lifestyles in insects living on ephemeral resources. Ecological entomology 30(5): 556-563, 2005

Filamentous Fungi: The Indeterminate Lifestyle and Microbial Ecology. Microbial Ecology 47(3): 224-235, 2004

Filamentous fungi: the indeterminate lifestyle and microbial ecology. Microbial Ecology 47(3): 224-235, 2004

Studies on protoplast technologies of filamentous fungi: Effects of dewallzyme on the formation of protoplasts from several filamentous fungi: I. Acta Scientiarum Naturalium Universitatis Normalis Hunanensis 16(2): 172-174, 1993

Ecological implication of the parameters of food resources used by phyllophagous insects. Lesovedenie (6): 49-57, 1990

Biochemical Mechanisms of Stone Alteration Carried out by Filamentous Fungi Living in Monuments. Biogeochemistry 19(3): 129-147, 1992

Biochemical mechanisms of stone alteration carried out by filamentous fungi living in monuments. Biogeochemistry 19(3): 129-147, 1992, 1993

Calcium measurement in living filamentous fungi expressing codon-optimized aequorin. Molecular Microbiology 52(5): 1437-1450, 2004

Competition assays and physiological experiments of soil and phyllosphere yeasts identify Candida subhashii as a novel antagonist of filamentous fungi. Bmc Microbiology 17(1): 4, 2017

Do insect death assemblages reflect the living insect community? Taphonomy of insects in a Recent ephemeral lake in southeastern Arizona. Special Publication - The Paleontological Society 8: 363, 1996

Fruit, flies and filamentous fungi - experimental analysis of animal-microbe competition using Drosophila melanogaster and Aspergillus mould as a model system. Oikos 119(11): 1765-1775, 2010

Implication of chromogenous fungi and insects in loricated pine dieback in Pollino National Park. Informatore Fitopatologico 53(4): 50-52, 2003

Isolating entomogenous fungi from living insects. Chinese Journal of Biological Control 11(4): 165-167, 1995

Genomic Resources for Goniozus legneri , Aleochara bilineata and Paykullia maculata , Representing Three Independent Origins of the Parasitoid Lifestyle in Insects. G3 9(4): 987-991, 2019

Imperfect fungi living on insects mycelial growth. Ziva 15(5): 187, 1967