منابع مشابه
Impact assessment of an invasive flatworm, Convoluta convoluta, in the Southern Gulf of Maine
Convoluta convoluta (Abildgaard 1806) is a small (2–3 mm long) acoellous turbellarian flatworm from Europe that has invaded the Gulf of Maine within the last 5 years. Although it has been reported in densities of up to 19 individuals/cm, its ecological impact remains unknown. In its native habitat, it consumes harpacticoid copepods and primary settling mussels < 0.5-mm shell length. This study ...
متن کاملEffect of the Venom of Glycera Convoluta
A neurotoxin able to increase the spontaneous release of transmitter was found in the venom glands of the polychaete annelid Glycera convoluta . We studied the effect of this venom on the frog cutaneous pectoris muscle, where its application produced a prolonged (20-h), high-frequency discharge of miniature potentials . After 5 h of action, the initial store was renewed several times but no det...
متن کاملEcological Studies of Symbiosis in Convoluta roscoff ensis
The size of the Convoluta roscoffensis population on a beach in Herm, Channel Islands is subject to wide seasonal variation, being very low in early summer and high in autumn and winter. Of the ecological factors measured, only light -expressed a s photosynthetically active radiation showed a correlation with population size. Low worm numbers, and also low numbers of algae and chlorophyll a con...
متن کاملAntinociceptive effect of ethanolic extract of Selaginella convoluta in mice
BACKGROUND Selaginella convoluta (Arn.) Spring (Selaginellaceae), commonly known as "jericó", is a medicinal plant found in northeastern Brazil. S. convoluta is used in folk medicine as an antidepressant, aphrodisiac, diuretic, analgesic, anti-inflammatory and it is used to combat amenorrhea, coughing and bleeding. This study was performed to evaluate the antinociceptive effects of ethanolic ex...
متن کاملAnti-Hepatitis B Virus Activity of Flavonoids from Marchantia convoluta
Flavonoids from Marchantia convoluta (MCF) were studied for their ability to inhibit the proliferation of 2.2.15 cells. All concentration of MCF inhibited the secretion of HBsAg and HBeAg in the cultured medium by 2.2.15 cells. Analysis of morphological changes of MCF-treated cells by phase-contrast microscopy revealed a possible mode of action for MCF: inhibition of proliferation of 2.2.15 cel...
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ژورنال
عنوان ژورنال: The Geologist
سال: 1859
ISSN: 1359-4656
DOI: 10.1017/s135946560002089x