Browsing Biology by Title
Now showing items 95-114 of 228
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Influence of Hypoxia and Adrenaline Administration on Coronary Blood-Flow and Cardiac-Performance in Seawater Rainbow-Trout (Oncorhynchus-Mykiss)
(1994-08)To investigate the relationship between cardiac performance and coronary perfusion, cardiovascular variables (Q, Vs, fH, PDA) and coronary blood flow (q(cor)) were measured in rainbow trout (Oncorhynchus mykiss) (1.2-1.6 ... -
The Influence of Operational Sex Ratio on the Intensity of Competition for Mates
(2011-02)The evolution and maintenance of secondary sexual characteristics and behavior are heavily influenced by the variance in mating success among individuals in a population. The operational sex ratio (OSR) is often used as ... -
The Influence of Reproductive Experience on Milk Energy Output and Lactation Performance in the Grey Seal (Halichoerus grypus)
(2011-05)Although evidence from domestic and laboratory species suggests that reproductive experience plays a critical role in the development of aspects of lactation performance, whether reproductive experience may have a significant ... -
Intense, Natural Pollution Affects Arctic Tundra Vegetation at the Smoking Hills, Canada
(1990-04)No abstract available. -
Interspecific and intraspecific variation in proximate, mineral, and fatty acid composition of milk in old world fruit bats (Chiroptera : Pteropodidae)
(2001-01)We examine the effect of body mass on milk composition among Old World fruit bats, including Pteropus pumilus (0.175 kg), Pteropus rodricensus (0.265 kg), Pteropus hypomelanus (0.571 kg), and Pteropus vampyrus (1.133 ... -
Intraguild interactions and large-scale population patterns
(2009-09)Competitive interactions, including interference and intraguild predation, occur in many aquatic food webs and influence large-scale patterns of abundance, especially in lentic habitats. In a study of small coastal streams ... -
Invasion-mediated shifts in the macrobenthic assemblage of a rocky subtidal ecosystem
(2011)We tracked changes in community composition that occurred with state shifts in the rocky subtidal ecosystem in Nova Scotia, Canada, from 1992 to 2008. At the beginning of our study, a dense aggregation of sea urchins was ... -
Invertebrate predation and lotic prey communities: Evaluation of in situ enclosure/exclosure experiments
(1984)The influence of the stonefly Kogotus nonus on prey communities was assessed by varying the predator density within small enclosures in a first-order stream in southwestern Alberta. Experimental containers with natural ... -
Isolation and sequence of cDNA clones coding for a member of the family of high mobility group proteins (HMG-T) in trout and analysis of HMG-T-mRNA's in trout tissues
(Oxford University Press, Oxford Journals, Great Clarendon Street, 1985-07)No abstract available. -
Jeffrey Hutchings CV
(2013-08-29) -
Jellyfish Support High Energy Intake of Leatherback Sea Turtles (Dermochelys coriacea): Video Evidence from Animal-Borne Cameras
(2012-03)The endangered leatherback turtle is a large, highly migratory marine predator that inexplicably relies upon a diet of low-energy gelatinous zooplankton. The location of these prey may be predictable at large oceanographic ... -
Jonathan M.Wright CV
(2013-08-29) -
Karl Popper’s organon and the world’s fisheries: fish stock assessment as a pseudoscience, an inductivism that can bear no fruit
(2006)Recent long term historical studies of commercial fisheries have pointed to a well established pattern of overfishing. Under the principle of transference – what is true in logic is true in psychology and scientific method ... -
Killer storms: North Atlantic hurricanes and disease outbreaks in sea urchins
(2010-11)An increase in the incidence of disease in various marine organisms over the past few decades has been linked to ocean climate change. In Nova Scotia, Canada, mass mortalities of sea urchins, due to an amoebic disease, ... -
Landscapes of the Five Bridge Lakes Wilderness Area: A Natural History
(Woodens River Watershed Environmental Organization, 2010-02-17)The Five Bridge Lakes Wilderness Area (FBLWA) lies about 20 kilometers west of downtown Halifax, Nova Scotia. It encompasses 8,626 hectares hectares of Crown land located in the centre of the Chebucto Peninsula on Nova ... -
Large-Scale Absence of Sharks on Reefs in the Greater-Caribbean: A Footprint of Human Pressures
(2010-08)Background: In recent decades, large pelagic and coastal shark populations have declined dramatically with increased fishing; however, the status of sharks in other systems such as coral reefs remains largely unassessed ... -
Larval cardiorespiratory ontogeny and allometry in Xenopus laevis
(1995)Very little is known about the early development of cardiorespiratory regulatory mechanisms in newly hatched amphibian larvae. We tested whether early cardiovascular responses to hypoxia reflect local flow regulation in ... -
Life-history correlates of extinction risk and recovery potential
(2012-06)Extinction risk is inversely associated with maximum per capita population growth rate (r(max)). However, this parameter is not known for most threatened species, underscoring the value in identifying correlates of r(max) ... -
Linking movement, diving, and habitat to foraging success in a large marine predator
(2006-12)Establishing where and when predators forage is essential to understanding trophic interactions, yet foraging behavior remains poorly understood in large marine carnivores. We investigated the factors leading to foraging ... -
Long-term change in a meso-predator community in response to prolonged and heterogeneous human impact
(2013-01)Sharks and rays' abundance can decline considerably with fishing. Community changes, however, are more complex because of species interactions, and variable vulnerability and exposure to fishing. We evaluated long-term ...