{"title":"天蝎不同摄食方式对成虫体型和发育时间的影响","authors":"M. Seiter, Laurin Mosetig, N. Milasowszky","doi":"10.1080/07924259.2020.1806119","DOIUrl":null,"url":null,"abstract":"ABSTRACT Scorpions often experience food shortages, yet information on their baseline nutritional input is lacking. In many life histories, there is a trade-off between adult size and development time that is interrelated with food availability. We present precise data on the influence of two different feeding regimes that affect development in the buthid scorpion Tityus neibae. The results indicate a strong relationship between the treatment group, sex, morphometrics and life stages. The different diet inputs had no influence on the embryonic development or the litter size but had a major effect on the postembryonic development time and on the life stage when individuals reached maturity. No females or males reached maturity by the 4th instar when fed every two weeks and only males that were fed weekly were able to reach maturity by the 4th. Thus, a trade-off in T. neibae males is apparent, since they can reach maturity earlier in life, resulting in an overall smaller body size that may reduce the risk of predation. By contrast, females may have been selected to reach full development with an overall larger body size that results in an increase in the fitness, the number, or the size of the offspring.","PeriodicalId":14482,"journal":{"name":"Invertebrate Reproduction & Development","volume":"64 1","pages":"274 - 280"},"PeriodicalIF":0.7000,"publicationDate":"2020-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/07924259.2020.1806119","citationCount":"2","resultStr":"{\"title\":\"The trade-off between adult size and development time due to different feeding regimes in the scorpion Tityus neibae\",\"authors\":\"M. Seiter, Laurin Mosetig, N. Milasowszky\",\"doi\":\"10.1080/07924259.2020.1806119\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT Scorpions often experience food shortages, yet information on their baseline nutritional input is lacking. In many life histories, there is a trade-off between adult size and development time that is interrelated with food availability. We present precise data on the influence of two different feeding regimes that affect development in the buthid scorpion Tityus neibae. The results indicate a strong relationship between the treatment group, sex, morphometrics and life stages. The different diet inputs had no influence on the embryonic development or the litter size but had a major effect on the postembryonic development time and on the life stage when individuals reached maturity. No females or males reached maturity by the 4th instar when fed every two weeks and only males that were fed weekly were able to reach maturity by the 4th. Thus, a trade-off in T. neibae males is apparent, since they can reach maturity earlier in life, resulting in an overall smaller body size that may reduce the risk of predation. By contrast, females may have been selected to reach full development with an overall larger body size that results in an increase in the fitness, the number, or the size of the offspring.\",\"PeriodicalId\":14482,\"journal\":{\"name\":\"Invertebrate Reproduction & Development\",\"volume\":\"64 1\",\"pages\":\"274 - 280\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2020-08-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1080/07924259.2020.1806119\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Invertebrate Reproduction & Development\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1080/07924259.2020.1806119\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"REPRODUCTIVE BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Invertebrate Reproduction & Development","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/07924259.2020.1806119","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"REPRODUCTIVE BIOLOGY","Score":null,"Total":0}
The trade-off between adult size and development time due to different feeding regimes in the scorpion Tityus neibae
ABSTRACT Scorpions often experience food shortages, yet information on their baseline nutritional input is lacking. In many life histories, there is a trade-off between adult size and development time that is interrelated with food availability. We present precise data on the influence of two different feeding regimes that affect development in the buthid scorpion Tityus neibae. The results indicate a strong relationship between the treatment group, sex, morphometrics and life stages. The different diet inputs had no influence on the embryonic development or the litter size but had a major effect on the postembryonic development time and on the life stage when individuals reached maturity. No females or males reached maturity by the 4th instar when fed every two weeks and only males that were fed weekly were able to reach maturity by the 4th. Thus, a trade-off in T. neibae males is apparent, since they can reach maturity earlier in life, resulting in an overall smaller body size that may reduce the risk of predation. By contrast, females may have been selected to reach full development with an overall larger body size that results in an increase in the fitness, the number, or the size of the offspring.
期刊介绍:
Invertebrate Reproduction & Development ( IRD) presents original research on the reproductive and developmental biology of the Invertebrata, both embryonic and postembryonic. IRD welcomes papers reporting significant results obtained using new techniques. Encouraged topic areas include: aquaculture, physiology, biochemistry, functional morphology, phylogeny, behavioural and regulatory mechanisms, including genetic, endocrine and molecular studies. Papers containing qualitative descriptions of reproductive cycles and gametogenesis will not be considered. IRD is published in association with the International Society of Invertebrate Reproduction and Development.