Life cycle and population dynamics of Bursaphelenchus willibaldi (Nematoda: Rhabditida: Aphelenchoididae) in vitro

Author:

Ryss Alexander Y.1ORCID,Polyanina Kristina S.1ORCID

Affiliation:

1. Zoological Institute of the Russian Academy of Sciences, Universitetskaya Naberezhnaya 1, St Petersburg, 199034, Russia

Abstract

Summary To develop models of forest ecosystem functioning, it is necessary to estimate parameters of the population dynamics of nematode species. Parameters of ontogenesis of Bursaphelenchus willibaldi from oak in culture of the fungus Botrytis cinerea were determined in vitro: oviposition began 2.7 (1-3) days after inoculation with adult nematodes; timelines of juvenile formation were: second-stage juveniles: 3.2 (3-4) days, third-stage juveniles: 3.6 (3-5) days, fourth-stage juveniles: 4.8 (3-6) days, first generation (1G) ended with a J4 moulting to adult after 5.8 (4-6) days. One day after the formation of the first generation, nematodes left the 2% potato-sugar agar (PSA) medium with the feed fungus and moved upwards, forming a migratory group (MG). In PSA the total nematode abundance reached peaks on day 11 (2G) and in the MG on day 27 (4.5G). The fecundity of females during population growth was determined as 3.4 (2.1-5.9) eggs day−1 and a model of exponential population growth was developed for total nematodes , ; and for females , . Under conditions of unrestricted reproduction and temperature of 21-23°C, the nematode and fungus can colonise 1 m3 of PSA-like medium in 36.8 days. The survival stage in the propagative generation was presumably J4. The female lifespan consists of a feeding and reproductive phase in the PSA (6 days) and a survival phase in the MG (1 month to 1 year). In MG, nematodes formed swarming groups of 20-200 individuals.

Publisher

Brill

Subject

Agronomy and Crop Science,Ecology, Evolution, Behavior and Systematics

Reference26 articles.

1. A method for routine measurements of total sugar and starch content in woody plant tissues;Chow, P.S.

2. Influence of European beech (Fagales: Fagaceae) rot hole habitat characteristics on invertebrate community structure and diversity;Cuff, J.P.

3. Nematode-based indices in soil ecology: application, utility, and future directions;Du Preez, G.

4. Contribution of nematodes to the structure and function of the soil food web;Ferris, H.

5. A framework for soil food web diagnostics: extension of the nematode faunal analysis concept;Ferris, H.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3