Results 31 to 40 of about 91,434 (172)

Research Update on Cover Crops and Nematicides

open access: yesEDIS, 2021
Two field experiments were initiated in January 2019 to evaluate the efficacy of nematicides and cover crops for managing the sting nematode (Belonolaimus longicaudatus) in a replanted grove affected by huanglongbing (HLB).
Larry Duncan   +2 more
doaj  

Gastrointestinal nematode species burdens and host mortality in a feral sheep population [PDF]

open access: yes, 2006
Every few years a large proportion of the feral sheep on Hirta, St Kilda die due to food shortage. The effects of malnutrition are exacerbated by gastrointestinal nematodes. As found in sheep flocks in mainland Britain, Teladorsagia circumcincta has long
Pilkington, J. G.   +2 more
core   +1 more source

Different cover crops have a limited impact on marketable yields and biogeochemical cycling but secondary effects on pollinators and plant-parasitic nematodes in Florida organic vegetable systems

open access: yesFrontiers in Sustainable Food Systems, 2023
Cover crops are typically grown during the summer in Florida’s organic vegetable systems, where they can affect nutrient cycling, soil health, and pests/pollinators.
John Allar   +4 more
doaj   +1 more source

The AAP gene family for amino acid permeases contributes to development of the cyst nematode Heterodera schachtii in roots of Arabidopsis [PDF]

open access: yes, 2013
The beet cyst nematode Heterodera schachtii is able to infect Arabidopsis plants and induce feeding sites in the root. These syncytia are the only source of nutrients for the nematodes throughout their life and are a nutrient sink for the host plant.
Elashry, Abdelnaser   +6 more
core   +1 more source

Natural variation of outcrossing in the hermaphroditic nematode Pristionchus pacificus [PDF]

open access: yes, 2009
Background: Evolution of selfing can be associated with an increase in fixation of deleterious mutations, which in certain conditions can lead to species extinction.
Savaliya, Chandni H   +14 more
core   +1 more source

First Report of the Sting Nematode Belonolaimus longicaudatus on Soybean in Delaware

open access: yesPlant Disease, 2010
In late July of 2005, several, large, irregular areas of severely chlorotic, stunted, and dead soybean plants were observed in two fields of soybean (Glycine max), 8.05 km apart, in sandy soil (94% sand, 2% silt, and 4% clay) in southwestern Sussex County, DE.
Z A, Handoo   +2 more
openaire   +2 more sources

Clinical effectiveness of hymenoptera venom immunotherapy [PDF]

open access: yes, 2013
Treatment failure during venom immunotherapy (VIT) may be associated with a variety of risk factors. Our aim was to evaluate the association of baseline serum tryptase concentration (BTC) and of other parameters with the frequency of VIT failure during ...
Scheipl, Fabian   +21 more
core   +1 more source

Signal sequence analysis of expressed sequence tags from the nematode Nippostrongylus brasiliensis and the evolution of secreted proteins in parasites [PDF]

open access: yes, 2004
Parasitism is a highly successful mode of life and one that requires suites of gene adaptations to permit survival within a potentially hostile host.
Murray E Selkirk   +20 more
core   +1 more source

The Role of miRNAs in Chicken Immune Regulation and Prospects for Disease‐Resistant Breeding

open access: yesAnimal Research and One Health, EarlyView.
A schematic workflow illustrating the screening of disease‐resistant miRNAs and the generation of miRNA‐based disease‐resistant chickens via PGC‐mediated germline genome editing. ABSTRACT MicroRNAs (miRNAs) are emerging as pivotal regulators of the immune system, playing a decisive role in shaping disease resistance in chicken.
Qiangzhou Wang   +10 more
wiley   +1 more source

Evidence for adaptive explanations of semelparity in animals

open access: yesBiological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher   +1 more
wiley   +1 more source

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