Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms
Tetranychus urticae Koch (Acari: Tetranychidae) is a key pest of citrus that can also feed on most plant species occurring in the ground cover associated with this crop. To determine the effect of the management of the ground cover on the biological control of this mite, we have studied the dynamics...
| Autores principales: | , , , , |
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| Formato: | article |
| Lenguaje: | Inglés |
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2017
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| Acceso en línea: | http://hdl.handle.net/20.500.11939/4932 |
| _version_ | 1855032198399262720 |
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| author | Aguilar-Fenollosa, Ernestina Ibanez, Victoria Pascual-Ruiz, Sara Hurtado-Ruiz, Mónica A. Jaques, Josep A. |
| author_browse | Aguilar-Fenollosa, Ernestina Hurtado-Ruiz, Mónica A. Ibanez, Victoria Jaques, Josep A. Pascual-Ruiz, Sara |
| author_facet | Aguilar-Fenollosa, Ernestina Ibanez, Victoria Pascual-Ruiz, Sara Hurtado-Ruiz, Mónica A. Jaques, Josep A. |
| author_sort | Aguilar-Fenollosa, Ernestina |
| collection | ReDivia |
| description | Tetranychus urticae Koch (Acari: Tetranychidae) is a key pest of citrus that can also feed on most plant species occurring in the ground cover associated with this crop. To determine the effect of the management of the ground cover on the biological control of this mite, we have studied the dynamics of both tetranychid and phytoseiid mites in four commercial clementine mandarin orchards under three different ground cover management strategies: (1) bare soil, (2) resident wild cover and (3) a sown cover of Festuca arundinacea Schreb. (Poaceae). Our results provide evidence that the management of ground cover can affect both Tetranychid and Phytoseiid mite populations. We hypothesize that both natural enemies (top-down mechanisms) and plant resources (bottom-up mechanisms, discussed in a previous paper) play important regulatory roles. T. urticae specialist phytoseiid mites were consistently found in the F. arundinacea cover and this may explain the better regulation of Tetranychid mite populations on trees grown in association with this cover crop. In contrast, the more regular provision of alternative food (pollen) in the wild cover relative to the F. arundinacea cover, could explain the higher abundance of generalist pollen feeder phytoseiids in the former. As a result, more efficient T. urticae-specialized phytoseiids could suffer increased competition from generalist pollen feeders in the wild cover. This fact, in combination with periods of prey scarcity, could result in their disappearance from the agroecosystem, resulting in an inadequate control of Tetranychid mites in trees grown in association with a wild cover. |
| format | article |
| id | ReDivia4932 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | ReDivia49322025-04-25T14:44:57Z Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms Aguilar-Fenollosa, Ernestina Ibanez, Victoria Pascual-Ruiz, Sara Hurtado-Ruiz, Mónica A. Jaques, Josep A. Tetranychus urticae Koch (Acari: Tetranychidae) is a key pest of citrus that can also feed on most plant species occurring in the ground cover associated with this crop. To determine the effect of the management of the ground cover on the biological control of this mite, we have studied the dynamics of both tetranychid and phytoseiid mites in four commercial clementine mandarin orchards under three different ground cover management strategies: (1) bare soil, (2) resident wild cover and (3) a sown cover of Festuca arundinacea Schreb. (Poaceae). Our results provide evidence that the management of ground cover can affect both Tetranychid and Phytoseiid mite populations. We hypothesize that both natural enemies (top-down mechanisms) and plant resources (bottom-up mechanisms, discussed in a previous paper) play important regulatory roles. T. urticae specialist phytoseiid mites were consistently found in the F. arundinacea cover and this may explain the better regulation of Tetranychid mite populations on trees grown in association with this cover crop. In contrast, the more regular provision of alternative food (pollen) in the wild cover relative to the F. arundinacea cover, could explain the higher abundance of generalist pollen feeder phytoseiids in the former. As a result, more efficient T. urticae-specialized phytoseiids could suffer increased competition from generalist pollen feeders in the wild cover. This fact, in combination with periods of prey scarcity, could result in their disappearance from the agroecosystem, resulting in an inadequate control of Tetranychid mites in trees grown in association with a wild cover. 2017-06-01T10:11:22Z 2017-06-01T10:11:22Z 2011 NOV 2011 article Aguilar-Fenollosa, E., Ibanez-Gual, M. V., Pascual-Ruiz, S., Hurtado, M., Jacas, J.A. (2011). Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms. Biological Control, 59(2), 171-179. 1049-9644 http://hdl.handle.net/20.500.11939/4932 10.1016/j.biocontrol.2011.06.012 en openAccess Impreso |
| spellingShingle | Aguilar-Fenollosa, Ernestina Ibanez, Victoria Pascual-Ruiz, Sara Hurtado-Ruiz, Mónica A. Jaques, Josep A. Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms |
| title | Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms |
| title_full | Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms |
| title_fullStr | Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms |
| title_full_unstemmed | Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms |
| title_short | Effect of ground-cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards (II): Top-down regulation mechanisms |
| title_sort | effect of ground cover management on spider mites and their phytoseiid natural enemies in clementine mandarin orchards ii top down regulation mechanisms |
| url | http://hdl.handle.net/20.500.11939/4932 |
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