Homarus americanus
Behavioral thermoregulation in the American lobster Homarus americanus
... There is a general consensus that the thermal preferences of ectothermic animals represent the temperatures at which their metabolism is most efficient (Beitinger and Fitzpatrick, 1979). In a sense, this may be the ...
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Identification of a novel sodium dependent fructose transport activity in the hepatopancreas of the Atlantic lobster Homarus americanus
... Over the past two decades, nutrient transport processes across the tubules of the hepatopancreas have been characterized for sugars (Ahearn et al., 1985; Verri et al., 2001), amino acids (Ahearn, 1992) and peptides ...
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The olfactory pathway for individual recognition in the American lobster Homarus americanus
... If individual recognition is considered a feature of advanced species, then some decapod crustaceans should be included in this company, i.e. at least one species of crayfish (Lowe, 1956), two species of hermit crabs ...
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Energized Ca2+ transport by hepatopancreatic basolateral plasma membranes of Homarus americanus
... Live Atlantic lobsters (Homarus americanus Milne- Edwards; 0.5 kg each) were purchased from commercial dealers in Hawaii and maintained unfed at 10 °C for up to 1 week in filtered sea water. Most animals ...
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FACTORS INFLUENCING THE DISTIBUTION OF EGG-BEARING AMERICAN LOBSTERS (HOMARUS (AMERICANUS)
... The commercial harvest of American lobster Homarus americanus (H. Milne-Edwards, 1837) in the United States occurs from Virginia to Maine, and has long been one of the most valuable single-species fisheries ...
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Chemosensitivity of Walking Legs of the Lobster Homarus Americanus: Neurophysiological Response Spectrum and Thresholds
... Responses of chemoreceptors in the walking legs of the lobster Homarus americanus to 35 individual compounds and 3 mixtures prey odours and extracts were studied using extracellular reco[r] ...
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AMGSEFLamide, a member of a broadly conserved peptide family, modulates multiple neural networks in Homarus americanus
... Recent genomic/transcriptomic studies have identified a novel peptide family whose members share the carboxyl terminal sequence – GSEFLamide. However, the presence/identity of the predicted isoforms of this peptide group ...
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Transepithelial d glucose and d fructose transport across the American lobster, Homarus americanus, intestine
... In crustaceans, the hepatopancreas and the intestine play a role in the absorption of dietary glucose (Ahearn et al., 1985; Verri et al., 2001), with the hepatopancreas being the major site of sugar absorption (Ahearn ...
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Adenosine increases ventilation rate, cardiac performance and haemolymph velocity in the American lobster Homarus americanus
... Kuramoto, 1998). Several of these compounds have been identified in the pericardial organs of decapods, from where they can be released into the haemolymph and transported to their site of action (Alexandrowicz, 1953). ...
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Temperature and acid–base balance in the American lobster Homarus americanus
... lobster Homarus americanus varies in temperature from 0 to 25°C depending on the seasons, the winds and the tides (Lawton and Lavalli, ...H. americanus are all temperature dependent within the ...
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Inter animal variability in the effects of C type allatostatin on the cardiac neuromuscular system in the lobster Homarus americanus
... lobster, Homarus americanus, is controlled by a simple pattern generator, consisting of nine neurons that make up the cardiac ganglion (CG); five of these are motor neurons that synapse onto and cause ...
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The peptide hormone pQDLDHVFLRFamide (crustacean myosuppressin) modulates the Homarus americanus cardiac neuromuscular system at multiple sites
... lobster Homarus americanus using four preparations: the intact animal, the heart in vitro , the isolated cardiac ganglion (CG), and a stimulated heart muscle ...
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Characterization of a basolateral electroneutral Na+/H+ antiporter in Atlantic lobster (Homarus americanus) hepatopancreatic epithelial vesicles
... exchange was documented in lobster and prawn hepatopancreas (Ahearn and Clay, 1989; Ahearn et al. 1990), crab gill (Shetlar and Towle, 1989) and starfish pyloric cecae (Ahearn and Franco, 1990). Kinetic analysis ...
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Forces generated during stretch in the heart of the lobster Homarus americanus are anisotropic and are altered by neuromodulators
... H. americanus affect the active or passive components of these length – tension curves, we also performed these tests in the presence of SGRNFLRFamide (SGRN) and GYSNRNYLRFamide ...
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Characterization of ion transport in the isolated epipodite of the lobster Homarus americanus
... Lobsters Homarus americanus Milne-Edwards 1835 weighing 250±50g fresh mass were purchased from a commercial supplier in Trenton, ME, USA, close to Mount Desert Island Biological Laboratory, Salisbury Cove, ...
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Copper transport by lobster (Homarus americanus) hepatopancreatic mitochondria
... Mechanisms of copper transport into purified mitochondrial suspensions prepared from the hepatopancreas of the Atlantic lobster Homarus americanus were investigated. Mitochondria were purified by combining ...
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Modulatory effects of adenosine and adenine nucleotides on different heart preparations of the American lobster, Homarus americanus
... To investigate the modulatory effects of adenosine and the adenine nucleotides on the heart, we used the semi-isolated in situ heart preparation similar to that of Wilkens and Mercier Wi[r] ...
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3H l histidine and 65Zn2+ are cotransported by a dipeptide transport system in intestine of lobster Homarus americanus
... Kinetics of transmural 3H-L-histidine transport in the presence and absence of luminal zinc and L-leucine Because at least a portion of the transmural transport rate of 3 H-L-histidine w[r] ...
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Urine release in freely moving catheterised lobsters (Homarus americanus) with reference to feeding and social activities
... The probability of urine release per hour in unfed lobsters was 0.34 median; this Key words: urine output, fighting, behaviour, catheter technique, value increased during agonistic inter[r] ...
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The effects of walking on heart rate, ventilation rate and acid base status in the lobster homarus americanus
... While heart rate and ventilation rate respond to the onset of exercise with a sharp increase, there is no correlation between these variables and exercise intensity during the exercise period. However, other mechanisms ...
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