Results 241 to 250 of about 2,109,878 (279)
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Modulation of nonspecific host defenses in fish
Veterinary Immunology and Immunopathology, 1986Seasonal, nutritional and hormonal effects on fish nonspecific protective mechanisms have been reviewed, together with the influence of some environmental pollutants. In the plaice (Pleuronectes platessa L.), the serum concentration of lysozyme and the acute phase reactant, C-reactive protein (CRP) and in vitro neutrophil migration have been used as ...
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Abundance/host size relationship in a fish trematode community
Journal of Helminthology, 1992ABSTRACTThe abundance of six species of trematodes: Aphanurus stossichi, Bacciger israelensis, Diphterostomum israelense, Plagioporus idoneus, Lepocreadium album and L. pegorchis, parasitic in the digestive tract of marine teleostei (Sparidae) collected near Jounieh (east Mediterranean), was analysed as a function of the host-size. In two parasite/host
A, Saad-Fares, C, Combes
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AGGREGATION OF HELMINTHS: THE ROLE OF FEEDING BEHAVIOR OF FISH HOSTS
Journal of Parasitology, 2004Individual Arctic charr (Salvelinus alpinus) from Fjellfrøsvatn, northern Norway, could be categorized by their stomach contents as zooplanktivores or benthivores. Feeding specialization among these fish was evident from negative correlations between helminths transmitted by pelagic copepods (Diphyllobothrium dendriticum and D.
Rune, Knudsen +2 more
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[Hosts of Acanthocephala. II--Definitive hosts. 1. Fishes].
Annales de parasitologie humaine et comparee, 1989From an attentive study of the largest number of available publications, we tried to establish the list of fish species harbouring fully mature Acanthocephala, i.e. females with completely developed eggs. This character is the sole on which we are allowed to assure that this fish is truly a definitive host for the parasite.
Y J, Golvan, I, De Buron
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Opisthorchis viverrini: Finding and recognition of the fish host by the cercariae
Experimental Parasitology, 1990The cercaria of Opisthorchis viverrini finds and recognizes its fish host by using at least four steps of behavioral patterns. (1) Dispersal and selection of plant-free water microhabitat are achieved by intermittent swimming behavior with positive phototactic orientation.
W, Haas, M, Granzer, C R, Brockelman
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Antimicrobial mechanisms of fish phagocytes and their role in host defense
Developmental & Comparative Immunology, 2001Phagocytosis is a primitive defense mechanism in all multicellular animals. Phagocytes such as macrophages and neutrophils play an important role in limiting the dissemination of infectious agents, and are responsible for the eventual destruction of phagocytosed pathogens.
N F, Neumann +4 more
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Genes required for Lactococcus garvieae survival in a fish host
Microbiology, 2007Lactococcus garvieae is considered an emergent pathogen in aquaculture and it is also associated with mastitis in domestic animals as well as human endocarditis and septicaemia. In spite of this, the pathogenic mechanisms of this bacterium are poorly understood.
Aurora, Menéndez +3 more
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Role of chemical substances from fish hosts in hatching and host-finding in monogeneans
Journal of Chemical Ecology, 1986Hatching responses to chemical stimuli appear to have evolved independently in different kinds of monogenean skin and gill parasites of fishes, particularly in those parasites associated with bottom-dwelling hosts. Some monogeneans, such asEntobdella soleae, have two hatching strategies, responding readily to host skin mucus but hatching spontaneously ...
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Digestion and digestive-transport surfaces in cestodes and their fish hosts
Comparative Biochemistry and Physiology Part A: Physiology, 1997The structural and functional organization of digestive-transport surfaces in some lower cestodes and their fish hosts was studied. It has been shown that the ultrastructure of cestode microtriches and fish enterocyte microvilli being the basis of membrane-linked digestion is quite similar.
G I, Izvekova +2 more
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Parasites grow larger in faster growing fish hosts
International Journal for Parasitology, 2005Parasites depend on host-derived energy for growth and development, and so are potentially affected by the host's ability to acquire nutrients under competitive foraging scenarios. Although parasites might be expected to grow faster in hosts that are better at acquiring nutrients from natural ecosystems, it is also possible that the most competitive ...
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