The influence of organic matter content and media compaction on the dispersal of entomopathogenic nematodes with different foraging strategies
| Autor: | Abigail M. D. Maher, Apostolos Kapranas, Christine T. Griffin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Peat Foraging Biology Moths Rhabdiasoidea 01 natural sciences Host-Parasite Interactions soil compaction Soil Species Specificity soil organic matter Animals Organic matter foraging behaviour entomopathogenic nematodes dispersal chemistry.chemical_classification Strongyloidea Larva Soil organic matter 04 agricultural and veterinary sciences Entomopathogenic nematode sex ratio infection 010602 entomology Infectious Diseases Agronomy chemistry Soil compaction 040103 agronomy & agriculture peat 0401 agriculture forestry and fisheries Biological dispersal Animal Science and Zoology Parasitology Research Article |
| Zdroj: | Parasitology |
| ISSN: | 1469-8161 0031-1820 |
| Popis: | SUMMARYIn laboratory experiments, we investigated how media with varying ratio of peat:sand and two levels of compaction influence dispersal success of entomopathogenic nematode (EPN) species with different foraging strategies: Steinernema carpocapsae (ambusher), Heterorhabditis downesi (cruiser) and Steinernema feltiae (intermediate). Success was measured by the numbers of nematodes moving through a 4 cm column and invading a wax moth larva. We found that both compaction and increasing peat content generally decreased EPN infective juvenile (IJ) success for all three species. Of the three species, H. downesi was the least affected by peat content, and S. carpocapsae was the most adversely influenced by compaction. In addition, sex ratios of the invading IJs of the two Steinernema species were differentially influenced by peat content, and in the case of S. feltiae, sex ratio was also affected by compaction. This indicates that dispersal of male and female IJs is differentially affected by soil parameters and that this differentiation is species-specific. In conclusion, our study shows that organic matter: sand ratio and soil compaction have a marked influence on EPN foraging behaviour with implications for harnessing them as biological pest control agents. |
| Databáze: | OpenAIRE |
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