نتایج جستجو برای: bird parasite

تعداد نتایج: 62988  

Journal: :Folia parasitologica 2007
Katerina Dolecková Martin Kasný Libor Mikes Francisca Mutapi Colin Stack Adrian P Mountford Petr Horák

Trichobilharzia regenti is a neurotropic bird schistosome,causing cercarial dermatitis in humans. In this study, ZAP cDNA expression library from Radix peregra s. lat. hepatopancreases containing intramolluscan stages of T. regenti was constructed and screened using PCR with specific and degenerate primers, designed according to previously described serine and cysteine peptidases of other paras...

Journal: :Journal of evolutionary biology 2006
P Hõrak L Saks U Karu I Ots

The question why different host individuals within a population differ with respect to infection resistance is of fundamental importance for understanding the mechanisms of parasite-mediated selection. We addressed this question by infecting wild-caught captive male greenfinches with intestinal coccidian parasites originating either from single or multiple hosts. Birds with naturally low pre-ex...

Journal: :محیط زیست طبیعی 0
حسین وارسته مرادی استادیار دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

although host species generally face increased risk of brood parasitism in fragmented temperate landscapes and forest edge, little information exists to assess such risks in tropical birds. we studied how cuculidae species populations, host species population, and micro-environmental variables changed along an edge-to-interior gradient in peninsular malaysia. bird observations and environmental...

Journal: :Parasite 2003
M L Dias J C Eiras M H Machado G T Souza G C Pavanelli

The attachment of Clinostomum sp. to the oesophagus of the bird definitive host Ardea cocoi is reported. The parasite attaches to the mucous layer of the oesophagus by the acetabulum, oral sucker, and oral collar. The mucous layer of the oesophagus engulfed by the oral sucker presents an intense liquefactive necrosis, and the engulfment is not likely to contribute significantly to the attachmen...

Journal: :Frontiers in Ecology and Evolution 2023

Introduction Parasites play important roles in ecosystems. Through their interactions with host and vector species, they are capable of changing the behavior population dynamics shape entire communities. Over past years, many studies have acknowledged role parasitism for populations communities discovered regulatory functions vertebrate populations. Although birds a well-studied group vertebrat...

Journal: :Journal of theoretical biology 2009
M D Harrison M Broom

The interaction between hosts and parasites in bird populations has been studied extensively. This paper uses game-theoretic methods to model this interaction. This has been done in previous papers but has not been studied taking into account the detailed sequential nature of this game. We introduce a model allowing the host and parasite to make a number of decisions which will depend on variou...

2011
C. Contini C. Palmas V. Seu L. Stancampiano F. Usai

Ixodes festai Rondelli, 1926 is a poorly known bird parasite tick. Its immature forms have not been described yet, while the adult forms only insufficiently, especially the male. In this note the presence of the male of Ixodes festai for the first time in Sardinia (Italy) is reported and a detailed redescription is provided. Morphometric data as well as photographs performed both with optical a...

Amir Hossein Maghsood , Masoud Hamzekhani , Mehrdad Hajilooei , Mohammad Fallah, Mohammad Matini , Nazanin Fallah ,

Introduction: Toxoplasmosis is a widely prevalent zoonotic disease, caused by T. gondii. Chickens, consumed widely in many countries, are considered as one of the most important hosts in the epidemiology of T. gondii infection because they could be a main source of infection for both cats and humans. There was no information regarding T. gondii infection in chickens in this area, therefore, thi...

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