منابع مشابه
Leeches
Real worms don't eat bacteria. Leeches are segmented, eucoelomate worms of the phylum Annelida, distinguished from other annelids by anterior and posterior suckers used for locomotion and feeding — on blood or soft body parts of other animals. They are not to be confused with nematodes, which lack these (and most other) features. Leeches are mainly aquatic, but the Asian land leeches are well k...
متن کاملLeeches run cold, then hot.
Food processing is costly, potentially limiting the energy and time devoted to other essential functions such as locomotion or reproduction. In ectotherms, post-prandial thermophily, the selection of a warm environmental temperature after feeding, may be advantageous in minimizing the duration of this elevated cost. Although present in many vertebrate taxa, this behaviour had not previously bee...
متن کاملJalaukavacharanam or Application of Leeches
" Jalaukavacharanam " or application of leeches is an important method of treatment in diseases like tumours, certain types of arthritis, oedema skin disorders etc., according to ayurveda. This method of treatment is part of the surgical procedure described in the science of medicine. A detailed description regarding the various morphological details of different varieties of leeches is also se...
متن کاملChromacin-like peptide in leeches.
We demonstrate the presence in leech hemolymph of high levels of a peptide recognized by antiserum directed against bovine chromacin. The purification of the chromacin-like peptide was carried out by an acidic extraction, followed by solid phase and high pressure gel permeation chromatography and reversed-phase HPLC purification. Its sequence (GDFELPSIADPQATFESQRGPSAQQVDK) was established by a ...
متن کاملThe Dynamics of Group Formation Among Leeches
Leeches exploring a new environment continuously meet each other and merge in temporary groups. After 2-3 h, leeches become attracted to each other eventually forming a large and stable group. When their number is reduced, leeches remain solitary, behaving independently. Group formation is facilitated by body injection of serotonin (5-HT) and the level of endogenous 5-HT is elevated in leeches ...
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ژورنال
عنوان ژورنال: BMJ
سال: 1914
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.2.2814.962