منابع مشابه
Cellulases of a marine mollusc, Dolabella sp.
1. A crude cellulase extract was prepared from the hepatopancreas of a marine mollusc, Dolabella sp., and partially purified by ammonium sulphate fractionation. 2. The optimum pH values of the partially purified preparation were 6.5 and 8.0 for Walseth cellulose and CM-cellulose respectively. It was most stable at pH6.0 and showed moderate thermostability. 3. The partially purified preparation ...
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It has been amply demonstrated that the nerve cells of some animals respond to light, and that excitatory and inhibitory cells are involved in this response (Arvanitaki & Chalazonitis, 1949a, b, 1958; Kennedy, 1961, 1963; Yoshida & Millott, 1959). In the photo-excitative cell, depolarization of the membrane, appearance of spikes or increase of their frequency have been seen in response to light...
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C ages were measured on replicate samples of burnt grain and five mollusc species collected from a single, sealed layer at an archaeological site (Hornish Point) on the west coast of South Uist, Scotland. The aim was to examine the impact of using different mollusc species on ΔR determinations that are calculated using the paired terrestrial/marine sample approach. The mollusc species examined ...
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Reproductive strategies and parental effects play a major role in shaping early life-history traits. Although polyandry is a common reproductive strategy, its role is still poorly documented in relation to paternal effects. Here, we used as a case study the invasive sessile marine gastropod Crepidula fornicata, a mollusc with polyandry and extreme larval growth variation among sibling larvae. B...
متن کاملEU Regulatory Risk Management of Marine Biotoxins in the Marine Bivalve Mollusc Food-Chain
Food safety risk assessment in the European Union (EU) recognises consumer illness that arises from marine biotoxins as a risk associated with bivalve mollusc consumption. EU food regulations contain various general food safety obligations, which should contribute significantly to managing this risk. EU food regulations additionally impose various specific obligations on both Food Business Oper...
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ژورنال
عنوان ژورنال: Research Journal of Applied Sciences
سال: 2011
ISSN: 1815-932X
DOI: 10.3923/rjasci.2011.92.98