Mechanisms to develop a Heterosigma akashiwo red tide in Osaka bay.
نویسندگان
چکیده
منابع مشابه
Growth characteristics of Heterosigma akashiwo virus and its possible use as a microbiological agent for red tide control.
The growth characteristics of Heterosigma akashiwo virus clone 01 (HaV01) were examined by performing a one-step growth experiment. The virus had a latent period of 30 to 33 h and a burst size of 7.7 x 10(2) lysis-causing units in an infected cell. Transmission electron microscopy showed that the virus particles formed on the peripheries of viroplasms, as observed in a natural H. akashiwo cell....
متن کاملDietary effects of the red-tide raphidophyte Heterosigma akashiwo on growth of juvenile Manila clams, Ruditapes philippinarum
We studied the effects of Heterosigma akashiwo, a harmful algal species, in the diet of juvenile Manila clams (Ruditapes philippinarum), because it often blooms in coastal waters where aquaculture of the clams is carried out. Weight of soft tissue of clams increased when they were fed H. akashiwo added at 8,000 cells mL-1, with weight growth about 8% higher than that of clams fed only Chaetocer...
متن کاملApplication of fluorescence in situ hybridization (FISH) method to detect Heterosigma akashiwo
Species-specific probes against cytoplasmic rRNA and nuclear rDNA of Heterosigma akashiwo were designed on the basis of LSU and ITS sequences. FISH protocols for whole cell and nuclear were established to detect this alga. The results showed that the rRNA-targeted probe hybridized with cytoplasmic rRNA, showing strong green fluorescence throughout the whole cell, while cells labeled by rDNA-tar...
متن کاملRelating cell-level swimming behaviors to vertical population distributions in Heterosigma akashiwo (Raphidophyceae), a harmful alga
Cell motility may facilitate the formation of harmful algal blooms (HABs) by enabling algal cells to swim to favorable microenvironments that support explosive growth. Motility also augments the formation of algal cell aggregations that are often associated with ecological and economic consequence. In this study, we used computerized video analysis to quantify cell-level swimming characteristic...
متن کاملBroad Salinity Tolerance as a Refuge from Predation in the Harmful Raphidophyte Alga Heterosigma akashiwo (Raphidophyceae).
The ability of harmful algal species to form dense, nearly monospecific blooms remains an ecological and evolutionary puzzle. We hypothesized that predation interacts with estuarine salinity gradients to promote blooms of Heterosigma akashiwo (Y. Hada) Y. Hada ex Y. Hara et M. Chihara, a cosmopolitan toxic raphidophyte. Specifically, H. akashiwo's broad salinity tolerance appears to provide a r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japan journal of water pollution research
سال: 1985
ISSN: 0387-2025
DOI: 10.2965/jswe1978.8.424