{"title":"饲用玉米青贮对秋粘虫(<i>Spodoptera frugiperda</i>)早期幼虫存活率和卵孵化率的影响","authors":"Masayuki HAYASHI, Sachiyo SANADA-MORIMURA, Naoki KATO, Ikuo HATTORI","doi":"10.6090/jarq.57.289","DOIUrl":null,"url":null,"abstract":"In this study, we investigated the effects of laboratory-scale silage preparation using a plastic bag and incubation on the early-instar larval viability and egg hatchability of fall armyworms (FAWs) inoculated into corn. In experiments performed to evaluate the effects on larval viability, the impacts of vacuum and anaerobic conditions were assessed as factors expected to influence larval viability after silage preparation. In the experiment that evaluated the effects on egg hatchability, the effects of enclosed fresh corn or fermented corn silage were examined. In the experiment that evaluated the effects of vacuum during silage preparation, no viable larvae were detected in anaerobic conditions, regardless of the length of incubation time (24 h or 14 days). In the experiment that confirmed the effects of carbon dioxide (CO2) gas during silage preparation, no viable larvae were noted under enclosed CO2 conditions, regardless of the incubation period (24 h or 14 days). After 3 days of silage preparation, we also found that egg hatchability was 0.05%. These results suggest that forage corn contaminated with FAW has a reduced larval viability rate and egg hatchability in the early stages of silage preparation, suggesting a low chance of FAW spreading from corn silage prepared under airtight conditions.","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"22 1","pages":"0"},"PeriodicalIF":0.3000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of Forage Corn Silage Preparation on Early-instar Larval Survivability and Egg Hatchability of Fall Armyworms (<i>Spodoptera frugiperda</i>)\",\"authors\":\"Masayuki HAYASHI, Sachiyo SANADA-MORIMURA, Naoki KATO, Ikuo HATTORI\",\"doi\":\"10.6090/jarq.57.289\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this study, we investigated the effects of laboratory-scale silage preparation using a plastic bag and incubation on the early-instar larval viability and egg hatchability of fall armyworms (FAWs) inoculated into corn. In experiments performed to evaluate the effects on larval viability, the impacts of vacuum and anaerobic conditions were assessed as factors expected to influence larval viability after silage preparation. In the experiment that evaluated the effects on egg hatchability, the effects of enclosed fresh corn or fermented corn silage were examined. In the experiment that evaluated the effects of vacuum during silage preparation, no viable larvae were detected in anaerobic conditions, regardless of the length of incubation time (24 h or 14 days). In the experiment that confirmed the effects of carbon dioxide (CO2) gas during silage preparation, no viable larvae were noted under enclosed CO2 conditions, regardless of the incubation period (24 h or 14 days). After 3 days of silage preparation, we also found that egg hatchability was 0.05%. These results suggest that forage corn contaminated with FAW has a reduced larval viability rate and egg hatchability in the early stages of silage preparation, suggesting a low chance of FAW spreading from corn silage prepared under airtight conditions.\",\"PeriodicalId\":14700,\"journal\":{\"name\":\"Jarq-japan Agricultural Research Quarterly\",\"volume\":\"22 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.3000,\"publicationDate\":\"2023-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Jarq-japan Agricultural Research Quarterly\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.6090/jarq.57.289\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"AGRICULTURE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Jarq-japan Agricultural Research Quarterly","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6090/jarq.57.289","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"AGRICULTURE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effects of Forage Corn Silage Preparation on Early-instar Larval Survivability and Egg Hatchability of Fall Armyworms (<i>Spodoptera frugiperda</i>)
In this study, we investigated the effects of laboratory-scale silage preparation using a plastic bag and incubation on the early-instar larval viability and egg hatchability of fall armyworms (FAWs) inoculated into corn. In experiments performed to evaluate the effects on larval viability, the impacts of vacuum and anaerobic conditions were assessed as factors expected to influence larval viability after silage preparation. In the experiment that evaluated the effects on egg hatchability, the effects of enclosed fresh corn or fermented corn silage were examined. In the experiment that evaluated the effects of vacuum during silage preparation, no viable larvae were detected in anaerobic conditions, regardless of the length of incubation time (24 h or 14 days). In the experiment that confirmed the effects of carbon dioxide (CO2) gas during silage preparation, no viable larvae were noted under enclosed CO2 conditions, regardless of the incubation period (24 h or 14 days). After 3 days of silage preparation, we also found that egg hatchability was 0.05%. These results suggest that forage corn contaminated with FAW has a reduced larval viability rate and egg hatchability in the early stages of silage preparation, suggesting a low chance of FAW spreading from corn silage prepared under airtight conditions.
期刊介绍:
The Japan Agricultural Research Quarterly (JARQ) is a publication of the Japan International Research Center for Agricultural Sciences (JIRCAS), which provides readers overseas with the latest information on key achievements and developments in agricultural research in Japan, with the expectation that this information would contribute to the agricultural development of countries in tropical and subtropical regions.