Results 21 to 30 of about 93,884 (306)

Parallelism and divergence in immune responses: a comparison of expression levels in two lakes [PDF]

open access: yes, 2014
Question: How do immune phenotypes differ between infected and uninfected wild individuals, and is the effect the same in different populations? Organisms: Threespine stickleback (Gasterosteus aculeatus) from two lake populations on the island of North ...
Ando   +43 more
core   +2 more sources

Seasonal stability in parasite assemblages of the Brazilian flathead, Percophis brasiliensis (Perciformes: Percophidae): Predictable tools for stock identification [PDF]

open access: yes, 2010
A comparison of the composition and structure of parasite communities of the Brazilian flathead, Percophis brasiliensis Quoy et Gaimard (Perciformes: Percophidae) among seasons during one year was carried out in the Argentine Sea.
Braicovich, Paola Elizabeth   +1 more
core   +2 more sources

The impacts of ecological factors on prevalence, mean intensity and seasonal changes of the monogenean gill parasite, Microcotyloides sp., infesting the Terapon puta fish inhabiting coastal region of Mediterranean Sea at Damietta region

open access: yesJournal of Basic and Applied Zoology, 2012
The present study has revealed, for the first time, the presence of the monogenean parasite, Microcotyloides sp., on the gills of the small scaled terapon fish, Terapon puta, inhabiting the costal region of the Mediterranean Sea near Damietta province ...
Abdel-Aziz A. Khidr   +3 more
doaj   +1 more source

Preliminary genetic evidence of two different populations of Opisthorchis viverrini in Lao PDR [PDF]

open access: yes, 2017
Opisthorchis viverrini is a major public health concern in Southeast Asia. Various reports have suggested that this parasite may represent a species complex, with genetic structure in the region perhaps being dictated by geographical factors and ...
B Sripa   +48 more
core   +3 more sources

Spatial and temporal parasite dynamics: microhabitat preferences and infection progression of two co-infecting gyrodactylids

open access: yesParasites & Vectors, 2022
Background Mathematical modelling of host-parasite systems has seen tremendous developments and broad applications in theoretical and applied ecology. The current study focuses on the infection dynamics of a gyrodactylid-fish system.
Clement Twumasi   +2 more
doaj   +1 more source

Allee Effects May Slow the Spread of Parasites in a Coastal Marine Ecosystem [PDF]

open access: yes, 2011
Allee effects are thought to mediate the dynamics of population colonization, particularly for invasive species. However, Allee effects acting on parasites have rarely been considered in the analogous process of infectious disease establishment and ...
Connors, B. M.   +3 more
core   +1 more source

Do Cyanobacteria Blooms Enhance Parasite Loads in Lake Erie Yellow Perch? [PDF]

open access: yes, 2020
Harmful Algal Blooms composed of cyanobacteria (HABs) are a major concern globally, especially in ecosystems that support commercial and recreational fisheries. Although HABs have been shown to negatively affect the services provided by ecosystems (e.g.,
Rude, Brady
core  

Parasitic worms of fish

open access: yesRevista do Instituto de Medicina Tropical de São Paulo, 1994
The infinite variety of fish worms life-cycles ecology host-parasite relationships host-parasite interactions fish worms and man.
WILLIAMS, Harford, JONES, Arlene
  +7 more sources

Species-specific Real Time-PCR primers/probe systems to identify fish parasites of the genera Anisakis, Pseudoterranova and Hysterothylacium (Nematoda: Ascaridoidea) [PDF]

open access: yes, 2018
Ascaridoid nematodes belonging to the genera Anisakis and Pseudoterranova are heteroxenous parasites, involving marine mammals as definitive hosts in their life-cycles, whereas crustaceans (krill), fish and squids acting as intermediate/paratenic hosts.
Colantoni, Alessandra   +5 more
core   +1 more source

Mutilation on gill filaments of Piaractus brachypomus (Characiformes: Serrasalmidae) caused by Braga patagonica (Crustacea: Cymothoidae), in the Brazilian Amazon [PDF]

open access: yesRevista Brasileira de Parasitologia Veterinária
Fish aquaculture is one of the main food production sectors for the growing global human population and is currently one of the most profitable production activities.
Marcos Sidney Brito Oliveira   +1 more
doaj   +1 more source

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