منابع مشابه
Determination of Moulting Events in Rock Lobsters from Pleopod Clipping
Rock lobster growth is routinely measured for research to optimise management measures such as size limits and quotas. The process of estimating growth is complicated in crustaceans as growth only occurs when the animal moults. As data are typically collected by tag-recapture methods, the timing of moulting events can bias results. For example, if annual moulting events take place within a very...
متن کاملMolecular detection of Marteilia sydneyi, pathogen of Sydney rock oysters.
The life cycle of Marteilia sydneyi, the aetiological agent of QX disease in the Sydney rock oyster Saccostrea commercialis, is not known. We have developed and optimised 2 diagnostic assays, the polymerase chain reaction (PCR) and in situ hybridisation, for use in investigating the role of possible alternative hosts in the life cycle of this pathogen. PCR primers, designed within the ITS1 rDNA...
متن کاملCristispira in North American Shellfish. a Note on a Spirillum Found in Oysters
Ten varieties of North American shellfish were examined for the occurrence of Cristispira in their styles. A cristispira was found in various numbers in Ostrea virginiana, Venus mercenaria, and Modiola modiolus, but none in Ensis americana, Mya arenaria, Mactra solidissima, Pecten irradians, Mytilus edulis, Fulgur canaliculatus, or Nassa obsoleta. Of 298 oysters, only 128 showed the crystalline...
متن کاملThe role of phenoloxidase suppression in QX disease outbreaks among Sydney rock oysters (Saccostrea glomerata)
The paramyxean protozoan, Marteilia sydneyi, is the etiological agent of QX disease in Sydney rock oysters (Saccostrea glomerata). QX disease affects the farming of oysters in Queensland and on five rivers in New South Wales (NSW), Australia. Disease outbreaks occur during summer months (January to April) and are associated with high mortality rates (up to 98%), which limit the growing out peri...
متن کاملInfectious microbial diseases and host defense responses in Sydney rock oysters
Aquaculture has long been seen as a sustainable solution to some of the world's growing food shortages. However, experience over the past 50 years indicates that infectious diseases caused by viruses, bacteria, and eukaryotes limit the productivity of aquaculture. In extreme cases, these types of infectious agents threaten the viability of entire aquaculture industries. This article describes t...
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ژورنال
عنوان ژورنال: New Zealand Journal of Marine and Freshwater Research
سال: 1972
ISSN: 0028-8330,1175-8805
DOI: 10.1080/00288330.1972.9515450