(1) The eyes of certain marine gastropods including Aplysia and Bulla, contain circadian pacemakers, which produce a circadian rhythm of autogenous compound action potential (CAP) activity.
(2) Escherichia coli transformed with a plasmid carrying the RuBisCO operon of the gastropod symbiont in the proper orientation for transcription from the plasmid lac promoter expressed catalytically active RuBisCO.
(3) Parelaphostrongylus tenuis infections were found in 15 gastropods (2.2% prevalence) representing 5 species; 5 of the infected gastropods were D. laeve.
(4) Ecdysteroids have been detected in trematode parasites and in several species of gastropod snails.
(5) The fluorescent dye 5(6)-carboxyfluorescein (5-CF) travels quickly up the nerves of the gastropod mollusc, Lymnaea stagnalis into the buccal ganglia and fills the cell bodies in 1-3 h. 5-CF filled neurones can be located in the intact ganglia with low intensity blue light.
(6) The structure and function of the digestive gland of the gastropod mollusc, Bithynia tentaculata, was investigated using ultrastructural, histochemical, and cytochemical techniques.
(7) We have begun the study of the molecular and cell biology of embryos, larvae and recruits having as a final goal, the development of appropriate biotechnologies to rear this gastropod.
(8) The marine gastropods Acmaea (Collisella) limatula and Acmaea (Notoacmea) scutum respond to distant predatory starfish (i.e.
(9) Immunocytochemical methods using an antiserum raised against ovine corticoliberin revealed perikarya and processes in the central and peripheral nervous system of the Pulmonate Gastropod Helix pomatia.
(10) The distribution of monoamines in the central ganglia of the nudibranch gastropod Hermissenda crassicornis was examined through the histological localization of both glyoxylic acid-induced fluorescence and serotonin-like immunoreactivity.
(11) The hemocyanins of the Fissurellidae, Naticidae and Melongenidae families of marine gastropods as well as some other molluscs including some members of the Opistobranchia and Bivalvia groups have hemocyanins which exist in solution as tri-decameric and mixed, multi-decameric aggregates characterized by sedimentation coefficients close to 100 S, 130 S, 150 S, 170 S and 200 S to 230 S. 2.
(12) The accumulation of cadmium, zinc and copper by the marine gastropod molluscs Patella vulgata and Patella intermedia has been studied by gel permeation chromatography of water-soluble extracts of environmentally contaminated shellfish.
(13) The effect of antipsychotic drugs was tested on responses to micro-electrophoretically applied dopamine, acetylcholine and 5-hydroxytryptamine in identified neurons of the marine gastropod Aplysia californica.
(14) The distribution of FMRFamide-like material in the gastropod mollusc, Helix aspersa, was studied by radioimmunoassay (RIA) and immunocytochemistry.
(15) The local anesthetic effects of cocaine and one of its main metabolites norcocaine, were investigated comparatively on isolated ganglion cells of the marine gastropod, Aplysia californica.
(16) Previous research suggests that gut distension by ingested bulk plays an important role in the regulation of food intake in gastropod molluscs.
(17) Hemocytes taken from six different gastropod snails, Achatina achatina, A. fulica, Biomphalaria glabrata, Bulinus natalensis, Helix aspersa, and Lymnaea stagnalis, were compared for morphology, peroxidase activity, and, using methods developed for L. stagnalis, the ability to generate reactive oxygen inermediates upon phagocytic stimulation.
(18) The total amount of retinochrome in the retina was several times higher than that of rhodopsin, distinguishing the gastropod eye from the cephalopod eye.
(19) Among the known intermediate filament proteins, NF60 and NF70 neurofilament proteins show highest similarity to an epithelial intermediate filament protein from Helix pomatia, a gastropod mollusk, and are less similar to vertebrate neurofilaments.
(20) Aposymbiotic Aiptasia polyps reinfected with zooxanthellae from the gastropod Melibe pilosa and the clam Tridacna maxima grew no better than polyps lacking zooxanthellae.
Whelk
Definition:
(n.) Any one numerous species of large marine gastropods belonging to Buccinum and allied genera; especially, Buccinum undatum, common on the coasts both of Europe and North America, and much used as food in Europe.
(n.) A papule; a pustule; acne.
(n.) A stripe or mark; a ridge; a wale.
Example Sentences:
(1) The cadmium-binding proteins were shown to exist in the hepatopancreas of three molluscs, a whelk, Buccinum tenuissimum, a turbo, Batillus cornutus, and a squid, Todarodes pacificus.
(2) Several experiments designed to count the number of tryptophan and methionine-containing peptides in the hemocyanin from the whelk Busycon canaliculatum indicate that sequence homology within the polypeptide chain of the mollusc hemocyanins accounts for their large size.
(3) While their double-shelled relations (clams, mussels, oysters, scallops, etc) specialise in filtering water to remove food particles, and their single-shelled little cousins (periwinkles, whelks, limpets, conches) specialise in, well, adorning a seafood platter, cephalopods (octopus, cuttlefish and squid) specialise in a seriously impressive form of self-defence.
(4) The Food Hygiene Laboratory and the Torry research station of the Ministry of Agriculture, Fisheries and Food provide a reference service for scombrotoxin, ciguatera, DSP, PSP and red whelk poisoning in the UK.
(5) Most of the currently known FMRFamide-related peptides (FaRPs) of molluscs were tested in a radioimmunoassay (RIA) and in the two standard bioassays for FMRFamide: the radula protractor muscle of the whelk Busycon contrarium, and the isolated heart of the clam Mercenaria mercenaria.
(6) The ventral pedal gland in the foot of the mature female whelk Buccinum undatum L. consists of a shallow pouch containing a layer of elongated cells which partially penetrate a basement membrane overlying layers of smooth muscle.
(7) The difference between London and a lot of other places is that London has been through it.” Neighbouring the Olympic stadium is Stratford indoor market, where West Indian yams sell alongside Polish sausages, cockles and whelks.
(8) The hemocyanin of the Californian whelk, Kelletia kelleti, investigated at pH and ionic conditions close to physiological, has a molecular weight close to 9.0 x 10(6) and a sedimentation constant of 114S, characteristic of the di-decameric structure of molluscan hemocyanins.
(9) (Her father told her she was mad for eating whelks when she could have been eating oysters.)
(10) She didn't have a big party because she couldn't afford it - instead she went to Whitstable for the day with two girlfriends and ate whelks.
(11) For weeks after fishing resumed, octopus and whelks were sold only at supermarkets in Fukushima prefecture.
(12) Four patients developed symptoms within 1 h of consuming whole whelks.
(13) Hemocyanin (Hcy) from whelk, Busycon canniculatum, has been developed as an immunospecific marker for virion and cell surface labeling in the electron microscope.
(14) The haemocyanin of the left-handed whelk Busycon contrarium (Conrad) exists largely as six or more multi-decameric aggregates characterized by sedimentation coefficients of approximately 105S, 132S, 155S, 170S, 185S and about 200-220S.
(15) Last month, the recovery reached another milestone when whelks and octopus went on sale in neighbouring Miyagi prefecture.
(16) He is "dour", "workaholic", "opaque", once described by historian Peter Hennessy as "having the social skills of a whelk".
(17) Low concentrations (10(-9)-10(-8) M) of this substance not only excite the isolated clam heart, but also produce tonic contractions of the isolated radula protractor muscle of the whelk, Busycon contrarium.
(18) The nation that never ceases telling the world how to govern itself – even taking admonition as far as war - cannot run its own whelk stall.
(19) A polysaccharide sulphate has been isolated from the hypobranchial mucin of the whelk Buccinum undatum.
(20) The enzyme activity from the whelk (Buccinum undatum) is stable for several hours after homogenization of the radular muscle, whereas that from insect flight muscle is very unstable.