Results 21 to 30 of about 36,741 (261)

microRNAs in parasites and parasite infection [PDF]

RNA Biology, 2013
miRNAs, a subclass of small regulatory RNAs, are present from ancient unicellular protozoans to parasitic helminths and parasitic arthropods. The miRNA-silencing mechanism appears, however, to be absent in a number of protozoan parasites. Protozoan miRNAs and components of their silencing machinery possess features different from other eukaryotes ...
Yadong, Zheng, Xuepeng, Cai, Janette E, Bradley   +2 more
openaire   +2 more sources

Natural parasitism of the second generation European corn borer eggs Ostrinia nubilalis (Hübner) (Lepidoptera, Pyralidae) by Trichogramma spp. in sweet corn fields in Vojvodina, Serbia - short communication

Plant Protection Science, 2017
Natural parasitism of the European corn borer eggs (Hübner) by Trichogramma spp. (Hymenoptera, Trichogrammatidae) was assessed in sweet corn field in north-west Serbia, region Vojvodina at the localities of Ruski Krstur, from 2004 till 2007.
Ján Tancik
doaj   +1 more source

Parasitism, the diversity of life, and paleoparasitology

Memorias do Instituto Oswaldo Cruz, 2003
The parasite-host-environment system is dynamic, with several points of equilibrium. This makes it difficult to trace the thresholds between benefit and damage, and therefore, the definitions of commensalism, mutualism, and symbiosis become worthless ...
Adauto Araújo, Ana Maria Jansen, Françoise Bouchet, Karl Reinhard, Luiz Fernando Ferreira   +4 more
doaj   +1 more source

Natural Parasitism in Acromyrmex landolti Forel (Hymenoptera, Formicidae) in Pastures of Bahia, Brazil

Sociobiology, 2015
This study aimed to evaluate the occurrence of natural parasitism in Acromyrmex landolti Forel, identify parasitoids associated to the species and to estimate parasitism rates. The experiment was conducted from January to May 2012 in Itapetinga, BA.
Maria Aparecida Castellani, Milton Silva Rodrigues Júnior, Aldenise Alves Moreira, Michele Silva D'Esquivel, Edenilson Batista Ribeiro, Luiz Carlos Forti, Sebastién Lacau   +6 more
doaj   +1 more source

Parasitoid complex and parasitism rates of the horse chestnut leafminer, Cameraria ohridella (Lepidoptera: Gracillariidae) in the Czech Republic, Slovakia and Slovenia

European Journal of Entomology, 2006
The horse chestnut leaf miner, Cameraria ohridella Deschka & Dimić, is a species of unknown origin that recently invaded most of Europe, causing serious damage to horse chestnut trees, Aesculus hippocastanum. Parasitism was studied over a period of three
Lubomír VOLTER, Marc KENIS
doaj   +1 more source

Density, parasitism, and sexual reproduction are strongly correlated in lake Daphnia populations

Ecology and Evolution, 2021
Many organisms can reproduce both asexually and sexually. For cyclical parthenogens, periods of asexual reproduction are punctuated by bouts of sexual reproduction, and the shift from asexual to sexual reproduction has large impacts on fitness and ...
Camden D. Gowler, Mary A. Rogalski, Clara L. Shaw, Katherine K. Hunsberger, Meghan A. Duffy   +4 more
doaj   +1 more source

Rare insights into intraspecific brood parasitism and apparent quasi–parasitism in black–capped chickadees

Animal Biodiversity and Conservation, 2011
Genetic analysis of passerine birds often finds evidence of extra–pair copulations within species, but genetic evidence of intraspecific brood parasitism (IBP) and quasi–parasitism (Q–P) are relatively rare. Further, it is even rarer for genetic patterns
K. A. Otter, B. W. Murray, C. I. Holschuh, K. T. Fort   +3 more
doaj   +1 more source

Protein Supplementation as a Nutritional Strategy to Reduce Gastrointestinal Nematodiasis in Periparturient and Lactating Pelibuey Ewes in a Tropical Environment

Pathogens, 2022
The study was carried out to evaluate the effect of energy and protein supplementation on parasitological and hematological response during peripartum and lactation of productive and non-productive Pelibuey ewes in a tropical environment.
Yoel López-Leyva, Roberto González-Garduño, Alvar Alonzo Cruz-Tamayo, Javier Arece-García, Maximino Huerta-Bravo, Rodolfo Ramírez-Valverde, Glafiro Torres-Hernández, M. Eugenia López-Arellano   +7 more
doaj   +1 more source

Hijacking the Host Clock: A Nematode Effector Antagonizes Soybean Circadian Defense and Translation Control

Advanced Science, EarlyView.
Soybean employs its circadian clock, governed by GmCCA1, to rhythmically defend against soybean cyst nematodes. The pathogen retaliates by secreting the effector Hg4E02, which hijacks the clock to suppress defense and co‐opt the host's translation machinery for nutrient acquisition.
Xingwei Wang, Yufeng Xu, Yanfei Hu, Lijun Cao, Ru Jiang, Changtian Chen, Rick Masonbrink, Thomas Maier, Yuchen Tu, Yabo Shi, Enhui Liu, Lingan Kong, Chan Guo, Wei Zhao, Peng Shi, Wenzhen Du, Andrew Severin, Thomas Baum, Deliang Peng, Huan Peng, Mian Zhou, Wei Wang   +21 more
wiley   +1 more source

Engineering Microbial Particles for Next‐Generation Biomedical Platforms

Advanced Science, EarlyView.
Microbe‐derived particles (MDPs), which include extracellular vesicles, outer membrane vesicles, inclusion bodies, polysaccharide particles, and virus‐like particles, represent a rapidly expanding category of bioinspired nanomaterials. With their natural origin, intrinsic biocompatibility, and highly programmable functionality, MDPs serve as a ...
Yuting Li, Yunjie Lu, Ziyan Huang, Jianjiang Chen, Yanbin Liu, Lei Qin, Chao Wang, Yumin Wu   +7 more
wiley   +1 more source