Micaela A. MANCINI, Carlos E. LANGE, Maria L. DE-WYSIECKI, Yanina MARIOTTINI
The Melanoplinae Scotussa lemniscata (Stål), is considered a pest grasshopper of the Pampa region grasslands of Argentina. The goal of this study was to estimate the consumption rates of males and females S. lemniscata as fifth-instar nymphs and adults under controlled conditions (30ºC, 14L:10D, 40% RH). The consumption trials were carried out using the perennial grass Festuca arundinacea (Schreber) (Poaceae) as food source. The study of these aspects is necessary to determine its current pest status more accurately. Consumption rates differed according to sex and stage of development. These where higher in the pre-reproductive adult stage vs. fifth-instar nymphs for both sexes. Additionally, adult females consumed significantly more (118.81 ± 9.41 mg/day) than the rest of individuals. The consumption of adult males and fifth-instar females was similar. Knowledge on consumption rates could contribute to the development of effective sustainable population management strategies.
{"title":"Food consumption rates in Scotussa lemniscata (Orthoptera: Acrididae: Melanoplinae) under controlled conditions","authors":"Micaela A. MANCINI, Carlos E. LANGE, Maria L. DE-WYSIECKI, Yanina MARIOTTINI","doi":"10.25085/rsea.820207","DOIUrl":"https://doi.org/10.25085/rsea.820207","url":null,"abstract":"The Melanoplinae Scotussa lemniscata (Stål), is considered a pest grasshopper of the Pampa region grasslands of Argentina. The goal of this study was to estimate the consumption rates of males and females S. lemniscata as fifth-instar nymphs and adults under controlled conditions (30ºC, 14L:10D, 40% RH). The consumption trials were carried out using the perennial grass Festuca arundinacea (Schreber) (Poaceae) as food source. The study of these aspects is necessary to determine its current pest status more accurately. Consumption rates differed according to sex and stage of development. These where higher in the pre-reproductive adult stage vs. fifth-instar nymphs for both sexes. Additionally, adult females consumed significantly more (118.81 ± 9.41 mg/day) than the rest of individuals. The consumption of adult males and fifth-instar females was similar. Knowledge on consumption rates could contribute to the development of effective sustainable population management strategies.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bruno MARCUCCI, María E. MAZZITELLI, Silvina A. GARRIDO, Liliana I. CICHÓN, Violeta C. BECERRA, Maria G. LUNA
Goniozus legneri Gordh (Hymenoptera: Bethylidae) is a larval ectoparasitoid of lepidopterans, with a worldwide history as a biocontrol agent of various agricultural pests. By means of extensive monitoring, this wasp was found in four distant districts of Mendoza province parasitizing three lepidopteran pests: Lobesia botrana (Den. et Shiff.) in grapevine, Ectomyelois ceratoniae (Zeller) in walnut and “espinillo” (Vachellia caven (Molina) Seigler et Ebinger) and Cydia pomonella (L.) in walnut. To corroborate the parasitoid species identification and to analyze its population viability in this region, studies of male genitalia and sexual crossings between wild and laboratory-reared wasps were conducted. Further, we report for the first time the natural host-parasitoid interaction of L. botrana with this parasitoid in vineyards from Argentina.
{"title":"Occurrence of Goniozus legneri (Hymenoptera: Bethylidae) and its association to lepidopteran pests in Northern cultivated oasis of Mendoza province, Argentina","authors":"Bruno MARCUCCI, María E. MAZZITELLI, Silvina A. GARRIDO, Liliana I. CICHÓN, Violeta C. BECERRA, Maria G. LUNA","doi":"10.25085/rsea.820209","DOIUrl":"https://doi.org/10.25085/rsea.820209","url":null,"abstract":"Goniozus legneri Gordh (Hymenoptera: Bethylidae) is a larval ectoparasitoid of lepidopterans, with a worldwide history as a biocontrol agent of various agricultural pests. By means of extensive monitoring, this wasp was found in four distant districts of Mendoza province parasitizing three lepidopteran pests: Lobesia botrana (Den. et Shiff.) in grapevine, Ectomyelois ceratoniae (Zeller) in walnut and “espinillo” (Vachellia caven (Molina) Seigler et Ebinger) and Cydia pomonella (L.) in walnut. To corroborate the parasitoid species identification and to analyze its population viability in this region, studies of male genitalia and sexual crossings between wild and laboratory-reared wasps were conducted. Further, we report for the first time the natural host-parasitoid interaction of L. botrana with this parasitoid in vineyards from Argentina.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
María C. NÚÑEZ-CAMARGO, Román MARTÍNEZ-ROSAS, Daniel LÓPEZ-LIMA, Alejandro SALINAS-CASTRO
The species Aegomorphus quadrigibbus (Say) and Thryallis undatus (Chevrolat) (Coleoptera: Cerambycidae) were identified causing damage to Persian lime trees in Martínez de la Torre municipality orchards, in central Veracruz state, Mexico. Ovipositions made by the adults to lay eggs on trunks and branches were observed, with galleries between two and five cm deep, which caused the branches to dry up and, in some cases, complete death of the trees. In trees previously affected with vascular pathogens or with nutrient deficiencies, the damage was more severe because the larvae formed galleries that surrounded the trunk or branches, preventing the flow of nutrients. The average incidence in the sampled trees was 10.8%. Since the Martínez de la Torre area is the most important Persian lime production region in Mexico, it is necessary to monitor crops to determine the presence of insects and develop studies to define levels of damage and management strategies for their insects’ populations when required. This is the first record of A. quadrigibbus and T. undatus associated with trees of the Rutaceae family and causing damage to Persian lime orchards.
在墨西哥中部维拉克鲁斯州的Martínez de la Torre市果园中，鉴定出了对波斯酸橙树造成危害的两种天牛(Say)和灰蚜(Chevrolat)(鞘翅目:天牛科)。观察到成虫在树干和树枝上产卵，有2到5厘米深的通道，这导致树枝干涸，在某些情况下，树木完全死亡。在先前受到血管病原体或营养缺乏影响的树木中，损害更为严重，因为幼虫形成了围绕树干或树枝的通道，阻止了营养物质的流动。样本树木的平均发病率为10.8%。由于Martínez de la Torre地区是墨西哥最重要的波斯石灰产区，因此有必要监测作物以确定昆虫的存在，并开展研究以确定损害程度，并在需要时对其昆虫种群进行管理策略。这是第一次记录与芦花科树木有关的A. quadrigibbus和T. undatus并对波斯酸橙园造成损害。
{"title":"First report of Aegomorphus quadrigibbus and Thryallis undatus (Coleoptera: Cerambycidae) damaging Persian lime orchards in Veracruz, México","authors":"María C. NÚÑEZ-CAMARGO, Román MARTÍNEZ-ROSAS, Daniel LÓPEZ-LIMA, Alejandro SALINAS-CASTRO","doi":"10.25085/rsea.820212","DOIUrl":"https://doi.org/10.25085/rsea.820212","url":null,"abstract":"The species Aegomorphus quadrigibbus (Say) and Thryallis undatus (Chevrolat) (Coleoptera: Cerambycidae) were identified causing damage to Persian lime trees in Martínez de la Torre municipality orchards, in central Veracruz state, Mexico. Ovipositions made by the adults to lay eggs on trunks and branches were observed, with galleries between two and five cm deep, which caused the branches to dry up and, in some cases, complete death of the trees. In trees previously affected with vascular pathogens or with nutrient deficiencies, the damage was more severe because the larvae formed galleries that surrounded the trunk or branches, preventing the flow of nutrients. The average incidence in the sampled trees was 10.8%. Since the Martínez de la Torre area is the most important Persian lime production region in Mexico, it is necessary to monitor crops to determine the presence of insects and develop studies to define levels of damage and management strategies for their insects’ populations when required. This is the first record of A. quadrigibbus and T. undatus associated with trees of the Rutaceae family and causing damage to Persian lime orchards.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two species of syrphid flies are reported for the first time in Argentina: the neotropical Rhingia nigra Macquart and exotic Eumerus obliquus (Fabricius). Individuals of both species were captured in the province of Misiones. Moreover, another individual of E. obliquus was reared from a decaying stem of Austrocylindropuntia subulata (Cactaceae) in the province of Tucumán. Finally, we report the presence of Eumerus strigatus (Fallén) in the province of Chubut, more than 400 km to southwest from its southernmost record.
{"title":"Rhingia nigra and Eumerus obliquus (Diptera: Syrphidae): first records in Argentina, and comments on range expansion of Eumerus strigatus","authors":"Juan P. TORRETTA, Noelia MAZA, Silvina G. BADO","doi":"10.25085/rsea.820211","DOIUrl":"https://doi.org/10.25085/rsea.820211","url":null,"abstract":"Two species of syrphid flies are reported for the first time in Argentina: the neotropical Rhingia nigra Macquart and exotic Eumerus obliquus (Fabricius). Individuals of both species were captured in the province of Misiones. Moreover, another individual of E. obliquus was reared from a decaying stem of Austrocylindropuntia subulata (Cactaceae) in the province of Tucumán. Finally, we report the presence of Eumerus strigatus (Fallén) in the province of Chubut, more than 400 km to southwest from its southernmost record.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The genus Epanycles Butler (Lepidoptera: Erebidae: Arctiinae: Ctenuchina) has been considered as monotypical for 145 years, including only Epanycles imperialis (Walker). Herein, we propose a new combination: E. satania new. comb. based on external morphology, genital morphology of males and females, morphological phylogeny, DNA barcoding, and geographical distribution. Epanycles satania was originally described for the genus Episcepsis Butler.
{"title":"he genus Epanycles (Lepidoptera: Erebidae: Arctiinae: Ctenuchina): 145 years of monotypy","authors":"Juan GRADOS, Karla MANTILLA, Rafael TURRENT DÍAZ","doi":"10.25085/rsea.820201","DOIUrl":"https://doi.org/10.25085/rsea.820201","url":null,"abstract":"The genus Epanycles Butler (Lepidoptera: Erebidae: Arctiinae: Ctenuchina) has been considered as monotypical for 145 years, including only Epanycles imperialis (Walker). Herein, we propose a new combination: E. satania new. comb. based on external morphology, genital morphology of males and females, morphological phylogeny, DNA barcoding, and geographical distribution. Epanycles satania was originally described for the genus Episcepsis Butler.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eduardo FAÚNDEZ, Catalina J. VARGAS, Mariom CARVAJAL
The distribution of Zelus renardii (Kolenati) in Chile is updated. The new records extend their distribution to both north and south extremes, from Arica y Parinacota to Magallanes regions. Additionally, first records are provided for the Oceanic Easter Island.
{"title":"An update of the distribution of the assassin bug Zelus renardii (Heteroptera: Reduviidae) in Chile, with first records from the Oceanic Easter Island","authors":"Eduardo FAÚNDEZ, Catalina J. VARGAS, Mariom CARVAJAL","doi":"10.25085/rsea.820210","DOIUrl":"https://doi.org/10.25085/rsea.820210","url":null,"abstract":"The distribution of Zelus renardii (Kolenati) in Chile is updated. The new records extend their distribution to both north and south extremes, from Arica y Parinacota to Magallanes regions. Additionally, first records are provided for the Oceanic Easter Island.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Juan O. DEL-POZO, Mariana L. YÁÑEZ-RAMÍREZ, José L. LÓPEZ-SALAZAR, Carlos PALACIOS-CARDIEL, David CHAMÉ-VÁZQUEZ, María Luisa JIMÉNEZ
In this work, we provide novel geographic information about five species of spiders belonging to the families Corinnidae, Filistatidae, Gnaphosidae, and Salticidae We record for the first time Attinella dorsata (Banks, 1895) (Salticidae), Filistatinella hermosa Magalhaes & Ramírez, 2017 (Filistatidae), and Micaria jeanae Gertsch, 1942 (Gnaphosidae) in the state of Baja California. Furthermore, Creugas gulosus Thorell, 1878 (Corinnidae), and Micaria pasadena Platnick & Shadab, 1988 (Gnaphosidae) are recorded in Baja California Sur. Both, A. dorsata y F. hermosa were not previously known from Mexico.
{"title":"New spiders records (Arachnida: Araneae) for the Baja California Peninsula, Mexico","authors":"Juan O. DEL-POZO, Mariana L. YÁÑEZ-RAMÍREZ, José L. LÓPEZ-SALAZAR, Carlos PALACIOS-CARDIEL, David CHAMÉ-VÁZQUEZ, María Luisa JIMÉNEZ","doi":"10.25085/rsea.820208","DOIUrl":"https://doi.org/10.25085/rsea.820208","url":null,"abstract":"In this work, we provide novel geographic information about five species of spiders belonging to the families Corinnidae, Filistatidae, Gnaphosidae, and Salticidae We record for the first time Attinella dorsata (Banks, 1895) (Salticidae), Filistatinella hermosa Magalhaes & Ramírez, 2017 (Filistatidae), and Micaria jeanae Gertsch, 1942 (Gnaphosidae) in the state of Baja California. Furthermore, Creugas gulosus Thorell, 1878 (Corinnidae), and Micaria pasadena Platnick & Shadab, 1988 (Gnaphosidae) are recorded in Baja California Sur. Both, A. dorsata y F. hermosa were not previously known from Mexico.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new species of the genus Fannia (Diptera: Fanniidae) is described, Fannia adelaidae sp. nov. This new species was collected in the Patagonian region in the province of Neuquén, within the Lanín National Park using baited traps. Photographs of diagnostic characters are provided for both sexes. Its possible phylogenetic relationship with other species of the same region is discussed.
{"title":"Description of a new species of Fannia (Diptera: Fanniidae) from the Argentinean Patagonia","authors":"M. Cecilia DOMINGUEZ","doi":"10.25085/rsea.820203","DOIUrl":"https://doi.org/10.25085/rsea.820203","url":null,"abstract":"A new species of the genus Fannia (Diptera: Fanniidae) is described, Fannia adelaidae sp. nov. This new species was collected in the Patagonian region in the province of Neuquén, within the Lanín National Park using baited traps. Photographs of diagnostic characters are provided for both sexes. Its possible phylogenetic relationship with other species of the same region is discussed.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fabiana A. ROSSI, Alejandro RABOSSI, Luis A. QUESADA- ALLUÉ, Martín M. PÉREZ
Phototaxis is a well-studied insect behaviour described as rigid and stereotyped. Larval response to light can be assessed by a fast and highly repetitive assay like a half-dark/half-illuminated plate. Drosophila melanogaster Meigen (Diptera: Drosophilidae) mutants can be used to study the response of larvae to sensory stimuli. Adults of the ebony mutant show behavioural deficits such as abnormal circadian rhythms and severe defects in vision, whereas the tan mutants show a slight deficiency in vision. We analysed the response of D. melanogaster mutant larvae for N-β-alanyl derivatives metabolism (ebony and tan) to determine whether they also show abnormal phototactic behaviour. Our results showed that ebony larvae exhibited a random response to light, whereas tan larvae showed a similar response to wild-type larvae. To assess if N-β-alanyl derivatives metabolism might be involved in the response of larvae to light, we fed them with N-β-alanyldopamine (NBAD), N-β-alanylhistamine (carcinine) or dopamine. NBAD restored the wt response in ebony larvae, whereas carcinine and DA produced no effect. These results suggest, for the first time, that NBAD might act as a neuroactive compound involved in the phototactic response of the D. melanogaster larvae.
{"title":"Cuticle sclerotization precursor N-β-alanyldopamine also plays a role in the regulation of larval phototactic behaviour in Drosophila melanogaster (Diptera: Drosophilidae)","authors":"Fabiana A. ROSSI, Alejandro RABOSSI, Luis A. QUESADA- ALLUÉ, Martín M. PÉREZ","doi":"10.25085/rsea.820205","DOIUrl":"https://doi.org/10.25085/rsea.820205","url":null,"abstract":"Phototaxis is a well-studied insect behaviour described as rigid and stereotyped. Larval response to light can be assessed by a fast and highly repetitive assay like a half-dark/half-illuminated plate. Drosophila melanogaster Meigen (Diptera: Drosophilidae) mutants can be used to study the response of larvae to sensory stimuli. Adults of the ebony mutant show behavioural deficits such as abnormal circadian rhythms and severe defects in vision, whereas the tan mutants show a slight deficiency in vision. We analysed the response of D. melanogaster mutant larvae for N-β-alanyl derivatives metabolism (ebony and tan) to determine whether they also show abnormal phototactic behaviour. Our results showed that ebony larvae exhibited a random response to light, whereas tan larvae showed a similar response to wild-type larvae. To assess if N-β-alanyl derivatives metabolism might be involved in the response of larvae to light, we fed them with N-β-alanyldopamine (NBAD), N-β-alanylhistamine (carcinine) or dopamine. NBAD restored the wt response in ebony larvae, whereas carcinine and DA produced no effect. These results suggest, for the first time, that NBAD might act as a neuroactive compound involved in the phototactic response of the D. melanogaster larvae.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gladys M. ROMERO SUELDO, Eduardo G. VIRLA, Mario CONTARINI, Guido A. VAN NIEUWENHOVE, Stefano SPERANZA
The “fall armyworm”, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a significant pest of many crops, particularly maize. To control it, genetically modified plants and synthetic pesticides are the main strategies employed, which has led to the emergence of resistant populations to both methods. The earwig Doru lineare (Eschscholtz) (Dermaptera: Forficulidae) has been observed in Argentina consuming both eggs and early instars S. frugiperda larvae. To contribute to the implementation of a rational pest management system, field cage tests were conducted to assess the efficiency of D. lineare as a predator against S. frugiperda and its potential protection of maize seedlings from the pest. The results of the tests showed that the survival rate of S. frugiperda larvae was significantly affected by the presence of earwigs. When two earwigs were released into a cage containing ten maize seedlings infested with twenty S. frugiperda larvae, after ten days, the dry weight of the plants was significantly higher and the level of damage was significantly lower compared to those without earwig release. These results confirm the protective effect of D. lineare against S. frugiperda, suggesting that earwigs should be considered as promising predators in conservation control strategies for maize crops.
{"title":"Evaluation of Doru lineare (Dermaptera: Forficulidae) effectiveness against Spodoptera frugiperda (Lepidoptera: Noctuidae) and its potential protection of maize seedlings","authors":"Gladys M. ROMERO SUELDO, Eduardo G. VIRLA, Mario CONTARINI, Guido A. VAN NIEUWENHOVE, Stefano SPERANZA","doi":"10.25085/rsea.820206","DOIUrl":"https://doi.org/10.25085/rsea.820206","url":null,"abstract":"The “fall armyworm”, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a significant pest of many crops, particularly maize. To control it, genetically modified plants and synthetic pesticides are the main strategies employed, which has led to the emergence of resistant populations to both methods. The earwig Doru lineare (Eschscholtz) (Dermaptera: Forficulidae) has been observed in Argentina consuming both eggs and early instars S. frugiperda larvae. To contribute to the implementation of a rational pest management system, field cage tests were conducted to assess the efficiency of D. lineare as a predator against S. frugiperda and its potential protection of maize seedlings from the pest. The results of the tests showed that the survival rate of S. frugiperda larvae was significantly affected by the presence of earwigs. When two earwigs were released into a cage containing ten maize seedlings infested with twenty S. frugiperda larvae, after ten days, the dry weight of the plants was significantly higher and the level of damage was significantly lower compared to those without earwig release. These results confirm the protective effect of D. lineare against S. frugiperda, suggesting that earwigs should be considered as promising predators in conservation control strategies for maize crops.","PeriodicalId":54250,"journal":{"name":"Revista De La Sociedad Entomologica Argentina","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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