Spatial, phase, and temporal distributions of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) in Tokyo Bay, Japan.
- T. Sakurai, S. Serizawa, H. Shiraishi
- Environmental ScienceEnvironmental Science and Technology
- 29 April 2010
The negative correlations between PFOS and PFOA concentrations and water salinity and the horizontal distributions of their concentrations suggested that freshwater inputs into the bay were the source of these compounds.
Growth and reproductive biology of the small penaeid shrimp Trachysalambria curvirostris in Tokyo Bay
The growth and reproductive biology of the penaeid shrimp Trachysalambria curvirostris in Tokyo Bay, Japan, is investigated by monthly bottom-trawl surveys and the observation of asynchronous development of oocytes in the ovary suggests that multiple spawning by individual females may occur during the reproductive season.
Ovarian Development of the Mud Crab Scylla paramamosain in a Tropical Mangrove Swamps, Thailand
The study revealed that the initiation of vitellogenesis could be identified by external observation of the ovary but could not indicate precisely.
Disturbance of benthic macrofauna in relation to hypoxia and organic enrichment in a eutrophic coastal bay.
Reproductive biology of the female Japanese mantis shrimp Oratosquilla oratoria (Stomatopoda) in relation to changes in the seasonal pattern of larval occurrence in Tokyo Bay, Japan
The results suggest that a substantial decrease in the stock size of large individuals causes the low larval abundance before July, which is similar to how most large female shrimps spawned in spring.
Upregulation of hypoxia-inducible factor (HIF)-1α and HIF-2α mRNA levels in dragonet Callionymus valenciennei exposed to environmental hypoxia in Tokyo Bay.
Long‐term changes in the assemblage of demersal fishes and invertebrates in relation to environmental variations in Tokyo Bay, Japan
Multivariate analyses of the representative species showed that fluctuations in the catch were related to three periods that reflected changes in relative abundance and species composition, which suggested that the demersal assemblage changed synchronously with environmental conditions.
Assessment of hypoxia-inducible factor-1α mRNA expression in mantis shrimp as a biomarker of environmental hypoxia exposure
- K. Kodama, M. Rahman, T. Horiguchi, P. Thomas
- Biology, Environmental ScienceBiology Letters
- 23 April 2012
It is shown that hypoxia-inducible factor-1α transcript levels in the heart and cerebral ganglion of mantis shrimp collected from hypoxic sites in Tokyo Bay are elevated several-fold over those inrimp collected from normoxic sites.
Reproductive biology of the Japanese mantis shrimp Oratosquilla oratoria (Crustacea Stomatopoda): Annual cycle of gonadal development and copulation
This study is the first to reveal this size-related reproductive pattern in both sexes in the Stomatopoda, suggesting that the timing of the onset of copulation is regulated by the sexual receptivity of females.
Impaired megabenthic community structure caused by summer hypoxia in a eutrophic coastal bay
Seasonal surveys of the megabenthic community and water and sediment quality in Tokyo Bay showed a difference in the community structure between the northern and southern parts of the bay, and impairment of the biota in the northern area could be explained by the threshold concentrations of dissolved oxygen and particulate organic carbon.