Reproductive biology of the paternal mouthbrooding cardinalfish <i>Apogon lineatus</i> in Tokyo Bay, Japan
نویسندگان
چکیده
منابع مشابه
Sexual difference in buccal morphology of the paternal mouthbrooding cardinalfish Apogon doederleini.
The buccal morphology was compared between the sexes of the cardinalfish Apogon doederleini, in which males provide mouthbrooding. The brood size increased proportionally with male buccal space, which increased with the fourth power of the standard length. In the breeding season, males had a larger buccal space than females, whereas there was no sexual difference in the non-breeding season, sug...
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Perfluorinated compounds (PFCs) were detected in sediment core samples collected in Tokyo Bay to reveal their time trends. The core sample deposited during 1950s-2004 was divided into two- to three-year intervals and the concentrations of 24 types of PFCs were determined. Perfluorooctane sulfonate (PFOS) decreased gradually from the early 1990s and its precursor decreased rapidly in the late 19...
متن کاملMass Balance of Dioxins in Tokyo Bay and Kasumigaura Lake Basins in Japan
Introduction A number of severe soil and air pollution cases around municipal and industrial waste incinerators have recently been found in Japan. It is tme that the amount of waste incinerated in Japan is very high compared with other countries; however, it must be clarified whether the incinerators are the sole cause ofthe present dioxin pollution problem. In this study, the mass balance of d...
متن کاملHorizontal and vertical distribution of estrogenic activities in sediments and waters from Tokyo Bay, Japan.
Endocrine-disrupting chemicals with estrogenic activity (e.g., alkylphenols) have been detected in coastal Japan. We aimed to determine estrogenic activity in extracts of river water, seawater, sediments, and sediment cores from Tokyo Bay by in vitro gene expression assay. Fifty-one of 57 extracts had some estrogenic activity. E2 equivalents (ng E2 equivalents per gram dry weight or per liter a...
متن کاملSpatial distribution and partitioning of polychlorinated biphenyls in Tokyo Bay, Japan.
Spatial distributions and partitioning of polychlorinated biphenyls (PCBs) in Tokyo Bay, Japan, were evaluated by measuring the concentrations of all 209 PCB congeners in surface and bottom waters and bottom sediment at 10 locations. The dissolved + particulate summed congener concentrations (SigmaPCB [sum of the concentrations of all 209 PCB congeners]) in surface and bottom waters ranged from...
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ژورنال
عنوان ژورنال: Fisheries science
سال: 2002
ISSN: 0919-9268
DOI: 10.2331/fishsci.68.sup1_457