scholarly journals Life cycle of Harmonia axyridis in central Europe

BioControl ◽  
2017 ◽  
Vol 63 (2) ◽  
pp. 241-252 ◽  
Author(s):  
A. Honek ◽  
Z. Martinkova ◽  
A. F. G. Dixon ◽  
J. Skuhrovec ◽  
H. E. Roy ◽  
...  
Keyword(s):  
Life Cycle ◽  
Central Europe ◽  
Harmonia Axyridis

scholarly journals Differences in the Phenology of Harmonia axyridis (Coleoptera: Coccinellidae) and Native Coccinellids in Central Europe

2018 ◽  
Vol 48 (1) ◽  
pp. 80-87 ◽  
Author(s):  
Alois Honek ◽  
Zdenka Martinkova ◽  
Helen E Roy ◽  
Anthony F G Dixon ◽  
Jiri Skuhrovec ◽  
...  
Keyword(s):  
Central Europe ◽  
Harmonia Axyridis

Transmission dynamics of Echinococcus multilocularis; its reproduction number, persistence in an area of low rodent prevalence, and effectiveness of control

Parasitology ◽  
2005 ◽  
Vol 131 (1) ◽  
pp. 133-140 ◽  
Author(s):  
K. TAKUMI ◽  
J. VAN DER GIESSEN
Keyword(s):  
Life Cycle ◽  
Intermediate Host ◽  
Central Europe ◽  
Definitive Host ◽  
Echinococcus Multilocularis ◽  
Reproduction Number ◽  
Parasite Burden ◽  
Host Population ◽  
Total Biomass ◽  
Control Campaign

On the basis of high prevalences of Echinococcus multilocularis in the growing fox populations in Central Europe, its total biomass may have increased significantly in the past 20 years. E. multilocularis is now also found in areas outside the known endemic area in Central Europe. Therefore, E. multilocularis, the causative agent of a serious parasitic zoonosis, might be of major concern for public health and a challenge to control. Some experimental field trials to control E. multilocularis using an anti-worm drug reduced parasite burden in a contaminated region during the control campaign, but failed to eradicate the parasite completely. It was our aim to develop a mathematical model describing the biomass of egg, larval, and adult worm stages of the E. multilocularis life-cycle, and simulate a hypothetical control campaign. Additionally, we derived the reproduction number of this parasite and explored conditions for the persistence of the parasite's life-cycle. Our model shows that while control campaigns rapidly reduce the worm burden in the definitive host, and consequently eggs in the environment, the pool of larvae in the intermediate host remains large. The parasite's life-cycle persists in a region where prevalence in the intermediate host is low (∼1%). Therefore, we conclude that the parasite is likely to re-emerge if control is discontinued on the basis of reduced worm population. Continued treatment of the definitive host is required to eradicate the larval stage of the parasite from the intermediate host population.

scholarly journals DAYA MANGSA PREDATOR Harmonia axyridis TERHADAP KUTU DAUN Mizus persicae PADA TANAMAN JERUK

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
Otto Endarto ◽  
Susi Wuryantini
Keyword(s):  
Body Weight ◽  
Life Cycle ◽  
Larval Stage ◽  
Harmonia Axyridis ◽  
Instar Nymph ◽  
Tropical Fruits ◽  
Screen House ◽  
Research Institute

The research aims to determine the prey abilily and preferences of Harmonia axyridisagainst Mizus persicae on citrus. The study was conducted at the screen house and EntomologyLaboratory of the Research Institute for Citrus and Sub-Tropical Fruits, in January-March 2016.The test for prey ability used the first larval stage of H. axyridis to imago for 30 individuals in eacharena. Data were analyzed by counting of M. persicae which eaten per day from each stage, i.e.larva instar, and H. axyridis imago, as well as the average prey during their life cycle. The resultsshowed that the highest prey of H. axyridis occurred in instar larvae 4, which reached 428.3% ofis body weight, with a number of preys 9.81 ± 1.01 head / day. Preferences of H. axyridis in instarslarvae 1,2, and 3 were instar nymphs 1 from M. persicae, and for H. axyridis the instar larvae 4and imago preferred of instar nymph 4. H. axyridis had a life cycle with a range of 6.6 -9.7 days.The duration of egg stage of the H. axyridis was 3 days, the larvae consisted of 4 instars, theduration of the stage for each instar was 2.4 days for instar 1 and 2; 5 days for instar 3; 12 daysfor instar 4, and 18.5 days for imago.Keywords: Prey, predator Harmonia axyridis, Mizus persicae, citrus

scholarly journals Factors determining local and seasonal variation in abundance of Harmonia axyridis (Coleoptera: Coccinellidae) in Central Europe

2019 ◽  
Vol 116 ◽  
pp. 93-103 ◽  
Author(s):  
Alois HONEK ◽  
Marek BRABEC ◽  
Zdenka MARTINKOVA ◽  
Anthony F.G. DIXON ◽  
Stano PEKAR ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Central Europe ◽  
Harmonia Axyridis

scholarly journals First record of rare dasydytid gastrotrich Setopus tongiorgii (Balsamo, 1982) from central Europe with some biological data

Zootaxa ◽  
2008 ◽  
Vol 1680 (1) ◽  
pp. 59
Author(s):  
ALEXANDER KIENEKE ◽  
OLE RIEMANN
Keyword(s):  
Life Cycle ◽  
Water Column ◽  
Central Europe ◽  
First Record ◽  
Biological Data ◽  
High Population ◽  
Population Densities ◽  
Head Region

Members of the freshwater family Dasydytidae belong to the rarest gastrotrichs although some species like Stylochaeta scirtetica may develop high population densities (Schwank 1990). The taxon Dasydytidae is characterised by several apomorphic features correlated to a semi-planktonic lifestyle. Species of Dasydytidae have, for example, completely lost their caudal adhesive tubes, they possess a system of ciliary bands in the head region with which they swim like ciliated larvae of annelids, and most species have motile spines to perform saltatory movements in the water column. So far, our knowledge on the biology, life cycle and their distribution is very limited. This is probably due to the rareness and difficult preparation and handling of Dasydytidae.

Introduction

1997 ◽  
pp. 1-18
Author(s):  
Leon J. Weinberger
Keyword(s):  
Life Cycle ◽  
Central Europe ◽  
Literary History ◽  
Eastern Mediterranean ◽  
Human Life ◽  
Lay Leaders ◽  
Contemporary Culture ◽  
Jewish Experience ◽  
Constant Feature ◽  
The Difference

This chapter provides an overview of Jewish hymnography. Synagogue hymnography, compared to its Christian and Muslim counterparts, is distinctive in both its focus and its volume. There is nothing comparable in Christianity or Islam to the vast Jewish liturgical corpus. The disparity in output is due both to the difference in focus and to the rabbinic encouragement to be creative in prayer. Lay leaders in the synagogue responded enthusiastically to the rabbinic advice, and urged their cantor-poets to compose additions to the obligatory šemaʻ and ʻamidah, as well as celebrations and observances of life-cycle events. A constant feature of the Jewish experience emerged with the hymnic ritualization of the great events of human life. There is also a difference in the historical experience of the Jews exiled from their national home. Given a life in exile, the synagogue poet would often appeal to God for national restoration. This book studies Jewish hymnography in the eastern Mediterranean and in western and central Europe, demonstrating how its literary history was largely determined by contemporary culture.

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