B. Okamura

Publications83
h-index31
Citations3,629
Highly Influential Citations197
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The Monopolization Hypothesis and the dispersal–gene flow paradox in aquatic organisms
Many aquatic organisms rely on passive transport of resting stages for their dispersal. In this review, we provide evidence pointing to the high dispersal capacity of both animals (cladocerans,… Expand
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A New Class and Order of Myxozoans to Accommodate Parasites of Bryozoans with Ultrastructural Observations on Tetracapsula bryosalmonae (PKX Organism)
Abstract Tetracapsula bryosalmonae, formerly PKX organism, is a myxozoan parasite that causes proliferative kidney disease in salmonid fish. Its primary hosts, in which it undergoes a sexual phase,… Expand
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Biodiversity and evolution of the Myxozoa.
Myxozoans (phylum Myxozoa) are metazoan parasites utilizing invertebrate and (mainly) aquatic vertebrate hosts. They have in common with cnidarians the possession of virtually identical, highly… Expand
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Zooid size in cheilostome bryozoans as an indicator of relative palaeotemperature
Abstract Zooid size in several species of living cheilostome bryozoans is known to be inversely correlated with temperature. The potential use of this correlation in relative palaeotemperature… Expand
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The phylogenetic position of Myxozoa: exploring conflicting signals in phylogenomic and ribosomal data sets.
Myxozoans are a diverse group of microscopic endoparasites that have been the focus of much controversy regarding their phylogenetic position. Two dramatically different hypotheses have been put… Expand
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Cymothoid isopod parasites in aquaculture: a review and case study of a Turkish sea bass (Dicentrarchus labrax) and sea bream (Sparus auratus) farm.
This paper reviews the occurrence of cymothoid isopod parasitism in aquaculture, reports the first case of infection by a cymothoid isopod (Ceratothoa oestroides) in Turkish aquaculture, and analyses… Expand
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Molecular data implicate bryozoans as hosts for PKX (phylum Myxozoa) and identify a clade of bryozoan parasites within the Myxozoa.
Proliferative kidney disease (PKD), a condition associated with high mortality in salmonid fish, represents an abnormal immune response to the presence of an enigmatic myxozoan, which has been… Expand
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Evidence that infectious stages of Tetracapsula bryosalmonae for rainbow trout Oncorhynchus mykiss are present throughout the year.
Proliferative kidney disease (PKD) is a hyperplastic condition of the lymphoid tissue of salmonids infected with the spores of Tetracapsula bryosalmonae, a myxozoan parasite formerly designated PKX,… Expand
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PATTERNS OF OCCURRENCE AND 18S rDNA SEQUENCE VARIATION OF PKX (TETRACAPSULA BRYOSALMONAE), THE CAUSATIVE AGENT OF SALMONID PROLIFERATIVE KIDNEY DISEASE
Recent progress in understanding the etiology of proliferative kidney disease (PKD) includes the identification of freshwater bryozoans as the natural hosts of the myxozoan parasite that causes the… Expand
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The Influence of Neighbors on the Feeding of an Epifaunal Bryozoan
Abstract In North Wales the encrusting bryozoans Electra pilosa (Linnaeus), Alcyonidium hirsutum (Fleming), and Flustrellidra hispida (Fabricius) are epifaunal on the fucoid alga Fucus serratus… Expand
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