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Wyszukujesz frazę "Woldemelak, W.A." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
The major biological approaches in the integrated pest management of onion thrips, Thrips tabaci (Thysanoptera: Thripidae)
Autorzy:
Woldemelak, W.A.
Powiązania:
https://bibliotekanauki.pl/articles/1078658.pdf
Data publikacji:
2020
Wydawca:
Instytut Ogrodnictwa
Tematy:
biological control
pest management
onion thrip
Thrips tabaci
Thysanoptera
Thripidae
Opis:
Thrips tabaci Lindeman is a cosmopolitan and polyphagous insect pest. It is known worldwide and recorded on more than 300 plant species. T. tabaci is a key pest of onion and several other crops, and its control is vital to the production and profitability of crops. If onion thrips population is not controlled, damage can reduce yield volume and quality. In addition to direct damage to the host plants, T. tabaci has been characterized as an asymptomatic vector of three devastating tospovirus species, such as Tomato spotted wilt virus, Iris yellow spot virus, and Tomato yellow ring virus. For this reason, several synthetic insecticides were used for control. However, these insecticides bring unwanted effects, like pesticide resistance, elimination of nontarget species, environmental pollution, and threats to human health. To solve the negative consequences of insecticides, biopesticides, such as plant secondary metabolites, entomopathogenic viruses, bacteria, fungi, and nematodes, have been recognized as effective alternatives. The use of plantbased insecticides and entomopathogenic control methods gained more attention in integrated pest management. Their strong side is lack of residues, saving beneficial insects and minimizing air and water pollution. Plant-derived compounds and entomopathogenic biological control agents offered a variety of biological modes of actions against onion thrips, such as repellency, feeding deterrence, anti-oviposition, fecundity deterrence, metamorphosis inhibition, and parasiting the host’s body.
Źródło:
Journal of Horticultural Research; 2020, 28, 1; 13-20
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The existence of deuterotokous reproduction mode in the T. tabaci (Thysanoptera: Thripidae) cryptic species complex
Autorzy:
Woldemelak, W.A.
Powiązania:
https://bibliotekanauki.pl/articles/1080142.pdf
Data publikacji:
2020
Wydawca:
Instytut Ogrodnictwa
Tematy:
Thysanoptera
insect
hemimetabolic insect
Thrips tabaci
Thripidae
cryptic species
insemination
genetic variability
Opis:
The present study aimed to investigate whether adult males could fertilize immature female pupae in the leek (L1) and tobacco-associated (T) Thrips tabaci lineages and to investigate the potential effects of mother to son inbreeding on the appearance of deuterotokous females in the T lineage. To confirm the pupal insemination, a single female pupa was exposed to a single adult male for 24 hours. The removal of a male from the tube that contained the female pupa was made before the female pupa emerged to adulthood. Emerged female adults were isolated and reared individually and the sex of their progeny was determined in the larval stages. To examine a mother and son inbreeding, a single female adult was exposed to her son for 48 hours, and for two consecutive generations, the mode of reproduction was determined by identifying the sex of the progeny. This result showed that pupal insemination was not successful; thus, all the tested females produced only male progeny. Virgin inbred females produced both male and female progeny that refers to deuterotokous reproduction mode. Three virgin females produced a total of 20 females and 75 males in two consecutive generations. A study concluded that deuterotokous mode of reproduction is not a persistent mode of reproduction in the T lineage but is a result of irregularity in the mode of reproduction, and it might be changed because of brother and sister inbreeding and need further studies.
Źródło:
Journal of Horticultural Research; 2020, 28, 1; 21-28
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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