Species Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain

Alfalfa is known to be an important reservoir harboring natural enemies. The reduction in insecticide sprayings in recent years has allowed us to study the coccinellid species complex in this crop and the relationship between these predators and aphids. Alfalfa was sampled by sweep-netting throughou...

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Autores principales:	Roberto Meseguer, Alexandre Levi-Mourao, Xavier Pons
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>Acyrthosiphon pisum</i> <i>Therioaphis trifolii</i> <i>Aphis craccivora</i> <i>Coccinella septempunctata</i> <i>Hippodamia variegata</i> population dynamics Science Q
Acceso en línea:	https://doaj.org/article/332afc3a39d7478b8a23997ac2b4ddbf
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id	oai:doaj.org-article:332afc3a39d7478b8a23997ac2b4ddbf
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spelling	oai:doaj.org-article:332afc3a39d7478b8a23997ac2b4ddbf2021-11-25T17:59:11ZSpecies Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain10.3390/insects121109712075-4450https://doaj.org/article/332afc3a39d7478b8a23997ac2b4ddbf2021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4450/12/11/971https://doaj.org/toc/2075-4450Alfalfa is known to be an important reservoir harboring natural enemies. The reduction in insecticide sprayings in recent years has allowed us to study the coccinellid species complex in this crop and the relationship between these predators and aphids. Alfalfa was sampled by sweep-netting throughout its productive period in several commercial stands each year between 2010 and 2021. The numbers and species of aphids and coccinellids were recorded. Sixteen coccinellid species were found. <i>Coccinella septempunctata</i> and <i>Hippodamia variegata</i> were, by far, the most prevalent species, with the former dominating during the first and second intercuts, whereas the latter dominated from the third to the fifth intercut. <i>Acyrthosiphon pisum</i> and <i>Therioaphis trifolii</i> were the most abundant aphid species, peaking in the second and fourth intercuts, respectively. Positive correlations were found between the abundance of <i>C. septempunctata</i> and <i>A. pisum</i> at the second intercut, between <i>H. variegata</i> and <i>T. trifolii</i> at the fourth intercut, and between <i>H. variegata</i> and the total number of aphids in the fifth intercut. This study helps to increase the knowledge on the predator–prey relationships of this crop and allows for designing strategies of conservation biological control against aphids.Roberto MeseguerAlexandre Levi-MouraoXavier PonsMDPI AGarticle<i>Acyrthosiphon pisum</i><i>Therioaphis trifolii</i><i>Aphis craccivora</i><i>Coccinella septempunctata</i><i>Hippodamia variegata</i>population dynamicsScienceQENInsects, Vol 12, Iss 971, p 971 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>Acyrthosiphon pisum</i> <i>Therioaphis trifolii</i> <i>Aphis craccivora</i> <i>Coccinella septempunctata</i> <i>Hippodamia variegata</i> population dynamics Science Q
spellingShingle	<i>Acyrthosiphon pisum</i> <i>Therioaphis trifolii</i> <i>Aphis craccivora</i> <i>Coccinella septempunctata</i> <i>Hippodamia variegata</i> population dynamics Science Q Roberto Meseguer Alexandre Levi-Mourao Xavier Pons Species Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain
description	Alfalfa is known to be an important reservoir harboring natural enemies. The reduction in insecticide sprayings in recent years has allowed us to study the coccinellid species complex in this crop and the relationship between these predators and aphids. Alfalfa was sampled by sweep-netting throughout its productive period in several commercial stands each year between 2010 and 2021. The numbers and species of aphids and coccinellids were recorded. Sixteen coccinellid species were found. <i>Coccinella septempunctata</i> and <i>Hippodamia variegata</i> were, by far, the most prevalent species, with the former dominating during the first and second intercuts, whereas the latter dominated from the third to the fifth intercut. <i>Acyrthosiphon pisum</i> and <i>Therioaphis trifolii</i> were the most abundant aphid species, peaking in the second and fourth intercuts, respectively. Positive correlations were found between the abundance of <i>C. septempunctata</i> and <i>A. pisum</i> at the second intercut, between <i>H. variegata</i> and <i>T. trifolii</i> at the fourth intercut, and between <i>H. variegata</i> and the total number of aphids in the fifth intercut. This study helps to increase the knowledge on the predator–prey relationships of this crop and allows for designing strategies of conservation biological control against aphids.
format	article
author	Roberto Meseguer Alexandre Levi-Mourao Xavier Pons
author_facet	Roberto Meseguer Alexandre Levi-Mourao Xavier Pons
author_sort	Roberto Meseguer
title	Species Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain
title_short	Species Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain
title_full	Species Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain
title_fullStr	Species Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain
title_full_unstemmed	Species Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain
title_sort	species complex and temporal associations between coccinellids and aphids in alfalfa stands in spain
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/332afc3a39d7478b8a23997ac2b4ddbf
work_keys_str_mv	AT robertomeseguer speciescomplexandtemporalassociationsbetweencoccinellidsandaphidsinalfalfastandsinspain AT alexandrelevimourao speciescomplexandtemporalassociationsbetweencoccinellidsandaphidsinalfalfastandsinspain AT xavierpons speciescomplexandtemporalassociationsbetweencoccinellidsandaphidsinalfalfastandsinspain
_version_	1718411734153166848

Species Complex and Temporal Associations between Coccinellids and Aphids in Alfalfa Stands in Spain

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