Life table estimates of the invasive slug Deroceras laeve (O. F Müller, 1774) occurring in Darjeeling Himalayas, India

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-09 DOI:10.1007/s42965-024-00348-7

Neha Kumari Gupta, Pranesh Paul, Himangshu Barman, Gautam Aditya

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Abstract

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 (T_c), 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.

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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

在实验室条件下，利用从野外采集的蛞蝓卵中孵化出的幼体，对印度大吉岭喜马拉雅山地区的入侵蛞蝓 Deroceras laeve 的生活史特征进行了估计。研究发现，D. laeve 的生长模式呈对数增长，最初迅速增长，并达到稳定状态直至死亡。D.laeve的最长寿命为138±3.48天，幼体期死亡率略高，随着年龄的增长死亡率逐渐下降。观察到 D. laeve 的生殖前期为 37 ± 2.7 天，生殖期为 100.8 ± 5.2 天，生殖后期为 5.4 ± 1.72 天。D. laeve 在 38 ± 2.7 天内达到性成熟，随着年龄的增加，各年龄的繁殖力也随之增加。卵孵化期为 14.25 ± 0.49 天，孵化率为 75%。净生殖值（R0）、世代时间（Tc）和有限增长率（λ）分别为 40.01、12.48 周和 1.455。显然，D. laeve 的性成熟早、净繁殖率高、世代时间短，表明其具有入侵性，并有望在相似的地理位置扩大范围。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.