Search Results - "Hughes, N R"

Rapid recovery of genetic diversity of dogwhelk (Nucella lapillus L.) populations after local extinction and recolonization contradicts predictions from life-history characteristics by COLSON, I., HUGHES, R. N.

“…The dogwhelk Nucella lapillus is a predatory marine gastropod populating North Atlantic rocky shores. As with many other gastropod species, N. lapillus was…”
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Liver fluke-associated and sporadic cholangiocarcinoma: an immunohistochemical study of bile duct, peribiliary gland and tumour cell phenotypes by Hughes, N R, Pairojkul, C, Royce, S G, Clouston, A, Bhathal, P S

“…Aim: To compare cell phenotypes displayed by cholangiocarcinomas and adjacent bile duct lesions in patients from an area endemic in liver-fluke infestation and…”
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The ultimate opportunists: consumers of seston by Coma, Rafel, Ribes, Marta, Gili, Josep-Maria, Hughes, Roger N.

“…The seston represents a highly dilute food source to potential consumers. Consequently, 3 general properties may be expected of sessile filter feeders: (1)…”
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Shore crabs are able to transfer learned handling skills to novel prey by Hughes, R.N., O'brien, N.

“…We used shore crabs, Carcinus maenas, feeding on molluscan prey as a model system for investigating the effects of previously learned handling skills on a…”
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The value of spontaneous alternation behavior (SAB) as a test of retention in pharmacological investigations of memory by Hughes, Robert N.

“…Because of its reliance on memory, the tendency for rats, mice and other animals to alternate successive choices of T- or Y-maze arms has assumed considerable…”
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Stress Promotes Maleness in Hermaphroditic Modular Animals by Hughes, R. N., Manríquez, P. H., Bishop, J. D. D., Burrows, M. T.

“…Sex-allocation theory developed for hermaphroditic plants predicts that impaired phenotype or reduced parental survivorship caused by environmental stress…”
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Population genetic consequences of larval dispersal mode and hydrography: a case study with bryozoans by GOLDSON, A. J, HUGHES, R. N, GLIDDON, C. J

“…Genetic analysis of the marine bryozoans Celleporella hyalina and Electra pilosa using the RAPD technique revealed population structuring corresponding to the…”
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Age-dependent loss of fertility in water-borne sperm of the bryozoan Celleporella hyalina by MANRIQUEZ, P. H, HUGHES, R. N, BISHOP, J. D. D

“…The cheilostome bryozoan Celleporella hyalina was used as a model to test the hypothesis that sessile animals fertilising retained eggs by water-borne sperm…”
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Two intertidal fish species use visual association learning to track the status of food patches in a radial maze by Hughes, R.N., Blight, C.M.

“…We tested fifteen-spined sticklebacks, Spinachia spinachia, and corkwing wrasse,Crenilabrus melops , for their ability to associate visual spatial cues with…”
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Intrinsic exploration in animals: motives and measurement by Hughes, Robert N

“…Intrinsic exploration involves exploratory acts that are not instrumental in achieving any particular goal other than performance of the acts themselves. Of…”
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The efficiency of adaptive search tactics for different prey distribution patterns: a simulation model based on the behaviour of juvenile plaice by Hill, S. L., Burrows, M. T., Hughes, R. N.

“…Juvenile plaice Pleuronectes platessa are particularly useful for studying forager search behaviour because their search paths are essentially two dimensional,…”
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Criteria for prey size-selection in molluscivorous crabs with contrasting claw morphologies by Seed, R., Hughes, R.N.

“…This paper briefly reviews our current understanding of prey size-selection in several families of tropical and temperate water molluscivorous crabs…”
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The cryptic responses of hatchery-reared sole to a natural sand substratum by ELLIS, T, HOWELL, B. R, HUGHES, R. N

“…In laboratory experiments, both reared and wild sole Solea solea selected a sand substratum in preference to a hard substratum. Reared sole with no previous…”
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Responses of benthic scavengers to fishing disturbance by towed gears in different habitats by Ramsay, Kirsten, Kaiser, Michel J, Hughes, Roger N

“…The aggregation and feeding behaviour of invertebrate scavengers in areas disturbed by trawling was investigated at three different localities. At each site a…”
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Foraging Strategies of Dogwhelks, Nucella lapillus (L.): Interacting Effects of Age, Diet and Chemical Cues to the Threat of Predation by R. L. Vadas Sr, Burrows, M. T., Hughes, R. N.

“…The effects of diet history, hunger and predation risk on short-term behavioral decisions of dogwhelks were tested in a specially designed test apparatus,…”
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Inbreeding and hermaphroditism in the sessile, brooding bryozoan Celleporella hyalina by HOARE, K, HUGHES, R. N

“…Hoare and Hughes examined the occurrence and effects of inbreeding in the sessile, colonial hermaphrodite Celleporella hyalina. Their research indicates that…”
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Cardiac and behavioural responses of mussels to risk of predation by dogwhelks by ROVERO, FRANCESCO, HUGHES, ROGER N., CHELAZZI, GUIDO

“…We used noninvasive, infrared phototransducers to record continuously the heartbeat of common mussels,Mytilus edulis , experiencing successive phases of…”
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Increased turning per unit distance as an area-restricted search mechanism in a pause-travel predator, juvenile plaice, foraging for buried bivalves by HILL, S, BURROWS, M. T, HUGHES, R. N

“…During searching, discovery of a prey patch by juvenile plaice Pleuronectes platessa was associated with a change from extensive to intensive search behaviour…”
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When Time is of the Essence: Choosing a Currency for Prey-Handling Costs by Rovero, Francesco, Hughes, Roger N., Chelazzi, Guido

“…1. Heartbeat rate was measured in shore crabs Carcinus maenas (L.) feeding on mussels Mytilus edulis L. in order to estimate the energetic cost of handling…”
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Growth hormone status following treatment for Cushing's syndrome by HUGHES, N. R, LISSETT, C. A, SHALET, S. M

“…OBJECTIVE Both pituitary surgery and radiotherapy for Cushing's disease can lead to growth hormone (GH) deficiency. Studies to date have, however, described…”
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