Results 41 to 50 of about 43,481 (227)

Histological studies on the effects of Clinostomum marginatum (Digenea, Clinostomidae) in its second intermediate host Loricariichthys platymetopon (Osteichthyes, Loricariidae) of the upper Paraná River, Brazi

open access: yesActa Scientiarum: Biological Sciences, 2008
Descreve-se a histopatologia da parasitose de Loricariichthys platymetopon (Osteichthyes, Loricariidae) por Clinostomum marginatum (Digenea, Loricariidae). Os parasitas foram observados encistados na base das nadadeiras, músculo, face interna do opérculo,
Jorge da Costa Eiras   +3 more
doaj   +1 more source

A isca e o parasita

open access: yesMaloca: Revista de Estudos Indígenas, 2021
Após a saída de reclusão da moça púbere, ao longo das brincadeiras rituais, o moça é apresentada e exposta pelas demais mulheresa a vários "predadores" encenados pelos homens.  Em um jogo de espelhamentos e inversões, ela é posicionada como uma isca para atrair os predadores e constituir-se como uma armadilha, uma emboscada, na qual o predador seduzido
openaire   +2 more sources

European mistletoe shares a similar demographic strategy with non‐parasitic plants

open access: yesJournal of Ecology, Volume 114, Issue 5, May 2026.
European mistletoe (Viscum album) does not have a distinct demographic strategy from non‐parasitic plants, as quantified by time‐based life history traits. We found that mistletoe vital rates were driven by mistletoe size and position in the host tree.
Oliver G. Spacey   +8 more
wiley   +1 more source

Giardia spp. e Cryptosporidium spp. em águas doces e de recreio [PDF]

open access: yes, 2012
Giardia duodenalis é um microrganismo eucariota unicelular flagelado. Sendo um dos protozoários parasitas mais comuns no intestino do homem, é o agente etiológico da giardiose.
Júlio, Cláudia
core  

Cowbirds use conspecific social information to detect host nests in the wild

open access: yesIbis, Volume 168, Issue 2, Page 799-804, April 2026.
Recent work shows that hosts of avian brood parasites use social information to increase egg rejection rates, but fewer studies explore how parasites themselves use such information to detect host nests in the wild. To determine whether wild Brown‐headed Cowbirds Molothrus ater use social information to detect host nests, we measured how individual ...
Omar J. Morosse   +2 more
wiley   +1 more source

Molecular diagnosis of cryptococcal meningitis in cerebrospinal fluid: comparison of primer sets for Cryptococcus neoformans and Cryptococcus gattii species complex

open access: yesBrazilian Journal of Infectious Diseases, 2015
Aim: This study evaluated the use of polymerase chain reaction for cryptococcal meningitis diagnosis in clinical samples. Materials and methods: The sensitivity and specificity of the methodology were evaluated using eight Cryptococcus neoformans/C ...
Marilena dos Anjos Martins   +5 more
doaj   +1 more source

Códigos para identificação de Cepas de Trypanosoma salivaria isoladas em mamíferos da América do Sul. [PDF]

open access: yes, 2011
Códigos para a designação de cepas de tripanosomas são necessários para a correta identificação e manipulação dos parasitas. A documentação que acompanha a codificação desses parasitas é de extrema utilidade, pois caso a documentação esteja incorreta ...
DÁVILLA, A. M. R.   +2 more
core   +1 more source

When honeybees come to town: Critical aspects of urban beekeeping and opportunities for regulation

open access: yesPeople and Nature, Volume 8, Issue 3, Page 528-540, March 2026.
Abstract Urban areas are increasingly valued for their role in conserving wild pollinators. Honeybees are often regarded as ambassador species for pollinator conservation, and beekeeping is frequently perceived as a pro‐biodiversity activity, which has become highly popular in urban areas.
Joan Casanelles‐Abella   +5 more
wiley   +1 more source

Great minds map alike: Citizen and expert distribution models of schistosome snail hosts in rural west Uganda

open access: yesEcological Solutions and Evidence, Volume 6, Issue 4, October–December 2025.
Citizen scientists and an expert jointly monitor Biomphalaria snails (the intermediate host of Schistosoma mansoni) in rural areas of southwest Uganda, generating over 4500 georeferenced records. By comparing expert‐ and citizen‐based distribution models under perfect and imperfect detection, we demonstrate that site type and NDVI consistently ...
Noelia Valderrama‐Bhraunxs   +5 more
wiley   +1 more source

Implicações da agregação espacial de parasitas para a dinâmica populacional na interação hospedeiro-parasita Implications of spatial aggregation of parasites for the population dynamics in host-parasite interaction

open access: yesRevista de Saúde Pública, 1997
São discutidos aspectos relacionados ao padrão comumente observado de distribuição agregada de parasitas na população-hospedeira. Geralmente observa-se que a maioria dos hospedeiros alberga poucos parasitas, enquanto que poucos hospedeiros albergam a ...
Claudio J. Von Zuben
doaj   +1 more source

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