{"title":"印度大吉岭喜马拉雅山入侵蛞蝓 Deroceras laeve (O. F Müller, 1774) 的生命表估计值","authors":"Neha Kumari Gupta, Pranesh Paul, Himangshu Barman, Gautam Aditya","doi":"10.1007/s42965-024-00348-7","DOIUrl":null,"url":null,"abstract":"<p>The life history traits of the invasive slug, <i>Deroceras laeve</i>, occurring in the Darjeeling Himalayas, India, were estimated under laboratory conditions using the hatchlings from eggs of field-collected <i>D. laeve</i>. The growth pattern of <i>D. laeve</i> was found to be logarithmic, rapidly increased initially, and reached a stable condition till death. The maximum life span of <i>D. laeve</i> was 138 ± 3.48 days, with slightly higher mortality during the juvenile period, which decreased gradually at older ages. The pre-reproductive period of 37 ± 2.7 days, reproductive period of 100.8 ± 5.2 days, and 5.4 ± 1.72 days post-reproductive period of <i>D. laeve</i> were observed. <i>D. laeve</i> attained sexual maturity during 38 ± 2.7 days, and the age-specific fecundity increased with increasing age. The hatchability of the eggs was observed to be > 75% following the incubation period of 14.25 ± 0.49 days. The net reproductive value (<i>R</i><sub><i>0</i></sub>), generation time (<i>T</i><sub><i>c</i></sub>), and finite rate of increase (<i>λ</i>) were 40.01, 12.48 weeks, and 1.455, respectively. Apparently, the earlier sexual maturity, high net reproductive rate, and shorter generation time of <i>D. laeve</i> are indicative of its invasive nature as well as prospective range expansion in similar geographic locations.</p>","PeriodicalId":54410,"journal":{"name":"Tropical Ecology","volume":"34 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Life table estimates of the invasive slug Deroceras laeve (O. F Müller, 1774) occurring in Darjeeling Himalayas, India\",\"authors\":\"Neha Kumari Gupta, Pranesh Paul, Himangshu Barman, Gautam Aditya\",\"doi\":\"10.1007/s42965-024-00348-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The life history traits of the invasive slug, <i>Deroceras laeve</i>, occurring in the Darjeeling Himalayas, India, were estimated under laboratory conditions using the hatchlings from eggs of field-collected <i>D. laeve</i>. The growth pattern of <i>D. laeve</i> was found to be logarithmic, rapidly increased initially, and reached a stable condition till death. The maximum life span of <i>D. laeve</i> was 138 ± 3.48 days, with slightly higher mortality during the juvenile period, which decreased gradually at older ages. The pre-reproductive period of 37 ± 2.7 days, reproductive period of 100.8 ± 5.2 days, and 5.4 ± 1.72 days post-reproductive period of <i>D. laeve</i> were observed. <i>D. laeve</i> attained sexual maturity during 38 ± 2.7 days, and the age-specific fecundity increased with increasing age. The hatchability of the eggs was observed to be > 75% following the incubation period of 14.25 ± 0.49 days. The net reproductive value (<i>R</i><sub><i>0</i></sub>), generation time (<i>T</i><sub><i>c</i></sub>), and finite rate of increase (<i>λ</i>) were 40.01, 12.48 weeks, and 1.455, respectively. Apparently, the earlier sexual maturity, high net reproductive rate, and shorter generation time of <i>D. laeve</i> are indicative of its invasive nature as well as prospective range expansion in similar geographic locations.</p>\",\"PeriodicalId\":54410,\"journal\":{\"name\":\"Tropical Ecology\",\"volume\":\"34 1\",\"pages\":\"\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-05-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Tropical Ecology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1007/s42965-024-00348-7\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tropical Ecology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s42965-024-00348-7","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ECOLOGY","Score":null,"Total":0}
Life table estimates of the invasive slug Deroceras laeve (O. F Müller, 1774) occurring in Darjeeling Himalayas, India
The life history traits of the invasive slug, Deroceras laeve, occurring in the Darjeeling Himalayas, India, were estimated under laboratory conditions using the hatchlings from eggs of field-collected D. laeve. The growth pattern of D. laeve was found to be logarithmic, rapidly increased initially, and reached a stable condition till death. The maximum life span of D. laeve was 138 ± 3.48 days, with slightly higher mortality during the juvenile period, which decreased gradually at older ages. The pre-reproductive period of 37 ± 2.7 days, reproductive period of 100.8 ± 5.2 days, and 5.4 ± 1.72 days post-reproductive period of D. laeve were observed. D. laeve attained sexual maturity during 38 ± 2.7 days, and the age-specific fecundity increased with increasing age. The hatchability of the eggs was observed to be > 75% following the incubation period of 14.25 ± 0.49 days. The net reproductive value (R0), generation time (Tc), and finite rate of increase (λ) were 40.01, 12.48 weeks, and 1.455, respectively. Apparently, the earlier sexual maturity, high net reproductive rate, and shorter generation time of D. laeve are indicative of its invasive nature as well as prospective range expansion in similar geographic locations.
期刊介绍:
Tropical Ecology is devoted to all aspects of fundamental and applied ecological research in tropical and sub-tropical ecosystems. Nevertheless, the cutting-edge research in new ecological concepts, methodology and reviews on contemporary themes, not necessarily confined to tropics and sub-tropics, may also be considered for publication at the discretion of the Editor-in-Chief. Areas of current interest include: Biological diversity and its management; Conservation and restoration ecology; Human ecology; Ecological economics; Ecosystem structure and functioning; Ecosystem services; Ecosystem sustainability; Stress and disturbance ecology; Ecology of global change; Ecological modeling; Evolutionary ecology; Quantitative ecology; and Social ecology.
The Journal Tropical Ecology features a distinguished editorial board, working on various ecological aspects of tropical and sub-tropical systems from diverse continents.
Tropical Ecology publishes:
· Original research papers
· Short communications
· Reviews and Mini-reviews on topical themes
· Scientific correspondence
· Book Reviews