Ichneumonoideos (Hymenoptera) parasitoides del complejo de orugas cortadoras en pasturas de alfalfa (Medicago sativa L.) en la Argentina Central

Estela, Baudino

doi:10.1590/s1519-566x2005000300008

Neotrop. Entomol.

2005

DOI: 10.1590/s1519-566x2005000300008

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Ichneumonoideos (Hymenoptera) parasitoides del complejo de orugas cortadoras en pasturas de alfalfa (Medicago sativa L.) en la Argentina Central

Baudino Estela¹

Abstract: -The knowledge about the role of natural enemies is crucial for integrated pest management systems. Parasitoids are considered most important for biological control, although the quantitative dimension of their effect on hosts is not always known. The objective of the present study was to survey the parasitoids of cutworms in the northeastern area of La Pampa Province, Argentina. The field work was conducted during four years (1999 to 2002). Larvae of Agrotis gypaetina Guenée, A. malefida (Guenée) and Peridrom… Show more

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Cited by 6 publications

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The Granulate Cutworm (Lepidoptera: Noctuidae): Biological Parameters Under Controlled Conditions, Host Plants, and Distribution in the Americas

Specht

Dias

Blas

et al. 2020

Journal of Insect Science

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Feltia subterranea (Fabricius), commonly known as the granulate cutworm, is a common species of owlet moths (Noctuidae) of major agricultural importance, widely distributed in Nearctic and Neotropical regions. This study was conducted to determine the species biological parameters, gather information about its larval host plants, and assess the agricultural significance of this species in the Americas. The viability of the egg, larval, pupal stages, and prepupal period was 98, 98, and 100%, respectively, under laboratory conditions. The average duration of the egg, larval, pupal stages, and prepupal period was 3, 17, 4, and 13 d, respectively. All laboratory-reared larvae developed through five instars. The growth ratio was 1.93 for females and 1.85 for males. The duration of the larval stage was significantly longer in females than in males from the fourth instar. The duration of the pupal stage was significantly shorter in females than in males. When larval and pupal stage durations were combined, there were no significant differences in total development time as a function of sex. In total, 159 botanical taxa belonging to 41 families were recorded as host species for F. subterranea. The families with the greatest number of host species were Fabaceae (22), Poaceae (19), Asteraceae (16), Brassicaceae (13), Solanaceae (12), Amaranthaceae (7), Cucurbitaceae (7), and Malvaceae (5). It is noteworthy that the large number of native weeds used by F. subterranea as host plants could represent a significant source of infestation of crops in the agricultural landscape.

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The Granulate Cutworm (Lepidoptera: Noctuidae): Biological Parameters Under Controlled Conditions, Host Plants, and Distribution in the Americas

Specht

Dias

Blas

et al. 2020

Journal of Insect Science

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Cutworms (Lepidoptera: Noctuidae) in central Brazil Savanna: temporal distribution and association of species abundance with climatic and meteorological factors

et al. 2022

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Population dynamics studies make it possible to predict the response of species to seasonal and inter‐annual climatic phenomena in hypothetical scenarios of climatic abnormality. However, long‐term studies on the temporal distribution and abundances of species are still scarce in the literature, including for species of agricultural importance. The present study aimed to bridge this gap through monthly collection events of species of cutworms (species of Agrotis and Feltia) across eight crop seasons (from July 2012 to June 2020) in the Brazilian Savanna (Cerrado). This biome is characterised by an irregular distribution of rainfall during a normal year, including two well‐defined periods of dry and rainy seasons. Only five species of cutworms were recorded: Agrotis ipsilon, Agrotis canities, Feltia repleta, Feltia submontana and Feltia subterranea, all widely distributed across South America. Except for F. submontana, occurring only in the autumn, other species occurred nearly year‐round, with distinct peaks of abundance in the dry season (April to October), supporting the hypothesis that species of Agrotina are well adapted to dry environments. The association of cutworms with dry environments was recovered for multivoltine, abundant species, such as A. ipsilon and F. subterranea, as for univoltine species, such as F. submontana. Across eight crop seasons, the abundance of all species decreased, coinciding with a high intensity El Niño effect. However, the effect itself was not found to be significant to predict the temporal distribution and abundances of cutworms and the causes of population decrease from 2014 to 2015 crop season remain to be explained. After the temporal autocorrelation effects were removed, it was revealed that the abundance of cutworms tends to be larger in crop seasons with less precipitation. Thus, this variable can be used to predict outbreaks of cutworms in the Cerrado. Some species of cutworms deserve special concern due to their frequency, seasonality and higher abundances in the Cerrado during the dry season. Their adaptability to adverse conditions may increase their spatio‐temporal distribution in Brazil and the frequency of outbreaks in a scenario of climate change, with the continuing reduction of rainfall in central and southeastern Brazil.

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Annotated Checklist of Brazilian Ophioninae (Hymenoptera: Ichneumonidae)

Fernandes

Onody²,

Lara³

et al. 2014

EntomoBrasilis

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The aim of this study was to provide an updated checklist of the species of Ophioninae reported for Brazil. Were catalogued 86 nominal species of Ophioninae, of which 61 of Enicospilus, nine of Thyreodon, five of Stauropoctonus, three of Ophiogastrella and of Ophion, two of Alophophion and of Rhynchophion and one of Prethophion. Enicospilus, to occur in 19 states and, is the most widely distributed genus. The present study reveals that knowledge of the fauna of Ophioninae is incipient in Brazil, much of the country remains subsampled and should have priority in future studies.Lista Anotada dos Ophioninae (Hymenoptera: Ichneumonidae) BrasileirosResumo. O objetivo deste estudo foi apresentar uma lista atualizada das espécies de Ophioninae (Hymenoptera: Ichneumonidae) relatadas para o Brasil. Foram catalogadas 86 espécies, dentre as quais 61 de Enicospilus, nove de Thyreodon, cinco de Stauropoctonus, três de Ophiogastrella e de Ophion, duas de Alophophion e de Rhynchophion e uma de Prethophion. Enicospilus, por ocorrer em 19 estados, é o gênero com maior distribuição geográfica. O presente estudo revela que o conhecimento da fauna de Ophioninae no Brasil é incipiente, que grande parte do país continua subamostrada e deve ter prioridade em estudos futuros.

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Ichneumonoideos (Hymenoptera) parasitoides del complejo de orugas cortadoras en pasturas de alfalfa (Medicago sativa L.) en la Argentina Central

Cited by 6 publications

References 1 publication

The Granulate Cutworm (Lepidoptera: Noctuidae): Biological Parameters Under Controlled Conditions, Host Plants, and Distribution in the Americas

The Granulate Cutworm (Lepidoptera: Noctuidae): Biological Parameters Under Controlled Conditions, Host Plants, and Distribution in the Americas

Cutworms (Lepidoptera: Noctuidae) in central Brazil Savanna: temporal distribution and association of species abundance with climatic and meteorological factors

Annotated Checklist of Brazilian Ophioninae (Hymenoptera: Ichneumonidae)

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