Group Movement in Entomopathogenic Nematodes: Aggregation Levels Vary Based on Context.

Autor: Stevens G; University of Idaho, Department of Entomology, Plant Pathology and Nematology, Moscow, ID 83844, USA., Usman M; Department of Entomology, University of Agriculture Faisalabad 38000, Pakistan., Gulzar S; Department of Entomology, University of Agriculture Faisalabad 38000, Pakistan., Stevens C; University of Idaho, Department of Entomology, Plant Pathology and Nematology, Moscow, ID 83844, USA., Pimentel E; University of Idaho, Department of Entomology, Plant Pathology and Nematology, Moscow, ID 83844, USA., Erdogan H; University of Idaho, Department of Entomology, Plant Pathology and Nematology, Moscow, ID 83844, USA.; Faculty of Agriculture, Department of Biosystems Engineering, Bursa Uludağ University, Bursa 16059, Turkey., Schliekelman P; University of Georgia, Department of Statistics, Athens, GA 30602, USA., Kaplan F; Pheronym, Inc., Davis, CA 95618, USA., Alborn H; Center for Medical, Agricultural, and Veterinary Entomology, U.S. Department of Agriculture Agricultural Research Service, 1700SW 23rd Drive, Gainesville, FL, USA., Wakil W; Department of Entomology, University of Agriculture Faisalabad 38000, Pakistan., Shapiro-Ilan D; USDA-ARS, SEFTNRL, Byron, GA 31008, USA., Lewis EE; University of Idaho, Department of Entomology, Plant Pathology and Nematology, Moscow, ID 83844, USA.
Jazyk: angličtina
Zdroj: Journal of nematology [J Nematol] 2024 Mar 14; Vol. 56 (1), pp. 20240002. Date of Electronic Publication: 2024 Mar 14 (Print Publication: 2024).
DOI: 10.2478/jofnem-2024-0002
Abstrakt: Maintenance of an aggregated population structure implies within-species communication. In mixed-species environments, species-specific aggregations may reduce interspecific competition and promote coexistence. We studied whether movement and aggregation behavior of three entomopathogenic nematode species changed when isolated, as compared to mixed-species arenas. Movement and aggregation of Steinernema carpocapsae , S. feltiae and S. glaseri were assessed in sand. Each species demonstrated significant aggregation when alone. Mixed-species trials involved adding two species of nematodes, either combined in the center of the arena or at separate corners. While individual species became less aggregated than in single-species conditions when co-applied in the same location, they became more aggregated when applied in separate corners. This increased aggregation in separate-corner trials occurred even though the nematodes moved just as far when mixed together as they did when alone. These findings suggest that maintenance of multiple species within the same habitat is driven, at least in part, by species-specific signals that promote conspecific aggregation, and when the species are mixed (as occurs in some commercial formulations involving multiple EPN species), these signaling mechanisms are muddled.
(© 2024 Glen Stevens et al., published by Sciendo.)
Databáze: MEDLINE
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