Data/hora: 09/06/2024 02:45:43

Provedor de dados: 	Acta Scientiarum: Biological Sciences	
País: 	Brazil	
Título: 	Tritrophic interaction between the Mexican sunflower, the aphid Aphis gossypii and natural enemies in a greenhouse experiment	
Autores: 	Venâncio, Henrique; Bianchi, Renata Alexandre; Lobato, Thaís Oliveira Santos; Sampaio, Marcus Vinícius; Santos, Jean Carlos.	
Data: 	2020-02-07	
Ano: 	2020	
Palavras-chave: 	Tithonia diversifolia; Cotton aphid; Aphidius platensis; Coccinelidae; Biological control.	
Resumo: 	The establishment of invasive plants negatively affects natural environments. Invasive herbivores that attack weeds can be used as a form of biological control, but natural enemies of herbivores must be associated with this interaction to prevent the invasive phytophagous from become a local pest. We performed a greenhouse experiment to evaluate how the cotton aphid, Aphis gossypii, a ok and invasive herbivore, affects the performance of the weed Tithonia diversifolia, the Mexican sunflower. We also examined the relationship between the aphid and local natural enemies. Seedlings of T. diversifolia were divided in two groups: one infested by the aphid and another not infested. After 22 days, we assessed the relationship between aphid abundance and the presence of natural enemies (Coccinelidae and Aphidius platensis) on infested plants, and compared the vegetative performance of the two seedling groups. Both natural enemies were positively related to high aphid density on infested plants. Plants infested by the aphid presented foliar necrosis and senescence, and a reduction of around 50% in leaf number, foliar area, shoot length and shoot, root and total plant weight compared to non-infested plants. These results indicate potential biological control of Mexican sunflower seedlings by the cotton aphid, and control of this aphid by the studied natural enemies.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/47120

10.4025/actascibiolsci.v42i1.47120	
Editor: 	Universidade Estadual De Maringá	
Relação: 	http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/47120/751375149337	
Formato: 	application/pdf	
Fonte: 	Acta Scientiarum. Biological Sciences; Vol 42 (2020): Publicação contínua; e47120

Acta Scientiarum. Biological Sciences; v. 42 (2020): Publicação contínua; e47120

1807-863X

1679-9283	
Fonte: 	Copyright (c) 2020 Acta Scientiarum. Biological Sciences

https://creativecommons.org/licenses/by/4.0