Results 1 to 10 of about 186,014 (303)

Differential accumulation of cardenolides from Asclepias curassavica by large milkweed bugs does not correspond to availability in seeds or biological activity on the bug Na+/K+-ATPase

open access: yesFrontiers in Ecology and Evolution, 2023
Milkweed–herbivore systems are characterized by cardenolide chemical defenses and specialized herbivore adaptations such as physiological target site insensitivity.
Paola Rubiano-Buitrago   +6 more
doaj   +1 more source

New Structures, Spectrometric Quantification, and Inhibitory Properties of Cardenolides from Asclepias curassavica Seeds

open access: yesMolecules, 2022
Cardiac glycosides are a large class of secondary metabolites found in plants. In the genus Asclepias, cardenolides in milkweed plants have an established role in plant–herbivore and predator–prey interactions, based on their ability to inhibit the ...
Paola Rubiano-Buitrago   +3 more
doaj   +1 more source

Targeted Mop up and Robust Response Tools Can Achieve and Maintain Possum Freedom on the Mainland

open access: yesAnimals, 2022
Unfenced sites on mainland New Zealand have long been considered impossible to defend from reinvasion by possums, and are thus unsuitable for eradication.
Briar Cook, Nick Mulgan
doaj   +1 more source

Occurrence of phytophagous and predacious mites in two fig cultivars with population dynamics of the most abundant species in relation to weather factors and plant phenology at Sohag governorate, Egypt [PDF]

open access: yesAcarines: Journal of the Egyptian Society of Acarology, 2021
A survey and ecological studies were carried out on mite species inhabiting fig, Ficus carica L. (Moraceae), an important fruit crop in Egypt, at Sohag governorate during 2020–2021. The occurrence of species inhabiting leaves, debris and soil of “Sultani”
Abd El-Aleem Desoky   +3 more
doaj   +1 more source

THE IMPLEMENTATION PROSPECTS OF AMBLYSEIUS SP. AS BIOLOGICAL CONTROL AGENT [PDF]

open access: yesRussian Journal of Agricultural and Socio-Economic Sciences, 2020
Amblyseius sp. was found as a natural enemy of spider mites. Amblyseius can adjust to live together with other mite predators in the development of spider mites. When conditions are favorable for the proper flow between source plants and protected plants,
Handoko, Latifah E.
doaj   +1 more source

Some ecological studies on sugar beet crop insects in Kafr El-Sheikh and Nubaria regions [PDF]

open access: yesJournal of Plant Protection and Pathology, 2021
The present studies were conducted at the experimental farms in Agricultural Research Stations of Kafr El-Sheikh and Nubaria regions during two seasons (2019/2020 and 2020/2021) to survey the insect pests and predators that inhibiting sugar beet crop ...
Mohsena. Mansour   +2 more
doaj   +1 more source

Field Evaluation of Organophosphorus Insecticides, Chlorpyrifos and Fungal Bio-Pesticides, Beauveria bassiana Towards the Sugar Beet Moth Scrobipalpa ocellatella (Lepidoptera: Gelechiidae) and Studying their Effect on the Population Size of the Associated Arthropod Predators in the Egyptian Sugar Beet Fields. [PDF]

open access: yesJournal of Plant Protection and Pathology, 2022
The sugar beet productions are generally threatened by the sugar beet moth Scrobipalpa ocellatella causing enormous yield loss. The current study was done to evaluate the effectiveness of one of the traditional insecticides (Chlorpyrifos) and the fungal ...
E. Refaei   +2 more
doaj   +1 more source

NATURAL ENEMIES ASSOCIATED WITH MEALY PLUM APHID HYALOPTERUS PRUNI (Geoff.), (HOMOPTERA: APHIDIDAE) INFESTED APRICOT TREES, AT QALUBIA GOVERNORATE [PDF]

open access: yesArab Universities Journal of Agricultural Sciences, 2005
The present work was carried out to study the population dynamics of the mealy plum aphid Hyalopterus pruni (Geoff.) and related parasitoids and predators on apricot trees, during the two successive seasons, 2003 and 2004, at Qalubia Gover-norate.
H Abul-Fadl   +2 more
doaj   +1 more source

Inferring Life History Characteristics of the Oceanic Whitetip Shark Carcharhinus longimanus From Vertebral Bomb Radiocarbon

open access: yesFrontiers in Marine Science, 2020
Oceanic whitetip sharks Carcharhinus longimanus are a cosmopolitan epipelagic species that was once prolific throughout the tropics and subtropics but was recently listed as Critically Endangered by the International Union for the Conservation of Nature ...
Michelle S. Passerotti   +2 more
doaj   +1 more source

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