By Klaus Rohde
This complete, authoritative and updated paintings presents the definitive evaluate of marine parasites around the world. it really is a useful reference for college kids and researchers in parasitology and marine biology and also will be of curiosity to ecologists, aquaculturists and invertebrate biologists. preliminary chapters overview the range and simple biology of the various teams of marine parasites, discussing their morphology, existence cycles, an infection mechanisms and results on hosts. The ecology and significance of marine parasites are mentioned within the moment a part of the ebook, the place contributions examine behavioural and ecological facets of parasitism and talk about the evolution and zoogeography of marine parasites. additionally, the commercial, environmental and scientific value of those organisms is printed, relatively their significance in aquaculture and their results on marine mammals and birds. Written via a global group of participants, the emphasis is on an intensive grounding in marine parasitology mixed with stories of novel techniques and state of the art examine.
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Extra resources for Marine Parasitology
5 µm wide) with two laterally attached ﬂagella. The anterior ﬂagellum (about 12 µm in length) has a brush of mastigonemes along one side and the posterior ﬂagellum (5–10 µm in length) is glabrous and has a tapered tip (Bower 1987a). The most characteristic feature of thraustochytrids is a unique organelle called the sagenogenetosome (bothrosome or sagenogen) on the cell surface from which arises the ectoplasm net consisting of a unit membrane tube containing no cell organelles (Fig. 3C). In the sagenogenetosome an electron-dense plug separates the cell cytoplasm from the ectoplasmic network.
Inset: Scanning electron micrograph of spore of H. pickfordi illustrating the spore lid and spore ornamentation originating from the aboral end. Scale bar = 2 µm. Reproduced from Burreson, EM, Spore ornamentation of Haplosporidium pickfordi Barrow, 1961 (Haplosporidia), a parasite of freshwater snails in Michigan, USA, Journal of Eukaryotic Microbiology 48(6): 622–626, with permission of the Journal of Eukaryotic Microbiology. C. Microcells of Bonamia ostreae infecting haemocytes of the ﬂat oyster, Ostrea edulis; n = nucleus of one infected haemocyte.
Over 1300 species have been described in invertebrates (especially insects) and lower (rarely higher) vertebrates. The parasites undergo cyclic merogony within host tissues followed by sporogony (often involving plasmotomy prior to sporoblastogenesis). Developmental stages may have single or paired nuclei (diplokaryotic) and they may be surrounded by a membranous sporophorous vesicle (pansporoblast) (Fig. 1M) or lie free in the host cell cytoplasm (Fig. 1N). All spores contain a unique coiled polar tube 15 16 Marine Parasitology which can be extruded to inject the infective sporoplasm into host cells (Fig.