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Showing 1 to 20 of 96 for “"spiny"”.
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Morphological characterization of medium spiny neuron development in vitro
Medium Spiny Neurons (MSNs) are the primary cell type of the striatum, a structure critically involved in motivation, memory, and movement. MSN structure and function are altered in Parkinson’s and Huntington’s disease as well as following repeated exposure to drugs of abuse. One site on the MSN …
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Role and distribution of astaxanthin in spiny lobster, Jasus lalandii
… distribution of astaxanthin in tissues of the spiny lobster, Jasus lalandii was investigated. The concentration of astaxanthin was quantified in the exoskeleton, haemolymph, muscles, gonads and hepatopancreas as well as in egg parcels from berried females during the moult as well as the …
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Succulent and spiny : the Bahamas' quest for a sustainable lobster fishery
The Caribbean spiny lobster fishery is one of the most important industries in the economy of the Bahamas, and in turn it is one of the largest lobster industries in the world. The natural geography of the Bahamas makes its waters into a lobster haven that Bahamian fishermen have successfully …
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A taxonomic revision of the spiny members of subfamily celastroideae (Celastraceae) in Southern Africa
A taxonomic revision of all the southern African spiny members of the Celastroideae is presented. Evidence from macromorphology, leaf anatomy, ecology and phytogeography is used as a basis for classification. The genus Gymnosporia (Wight & Am.) Hook. f. is reinstated, deviating from Maytenus by the …
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Incorporating Migration and Local Movement Patterns into Management Strategies for Spiny Dogfish (Squalus acanthias)
… warrant the separation of the northwest Atlantic Spiny Dogfish (Squalus acanthias) into separate management units. These management units are not genetically distinct, but rather would be based on unique behaviors adopted by hypothesized groups of dogfish that connect reproductive, feeding, and …
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Regulation of Glucose Uptake and Transporter Expression in the North Pacific Spiny Dogfish (Squalus suckleyi)
… were investigated in the North Pacific spiny dogfish (Squalus suckleyi). In particular, the presence of a putative GLUT4 transporter, which was previously thought to have been lost in these fish, was established and its mRNA levels were shown to be upregulated by feeding (intestine, …
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Reproductive biology of female spiny lobster Palinurus Delagoae in two areas off eastern South Africa
… the reproductive biology of the East Coast spiny lobster in order to address this aim. A recent study (Groeneveld in press) assessed fecundity, egg loss during gestation, relative reproductive potential and lifetime egg production per recruit for P. gilchristii from three areas along the …
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The Ecological Ramifications of Disease and Density in the Caribbean Spiny Lobster, <i>Panulirus argus</i>
… virus that infects juvenile Caribbean spiny lobster, <em>Panulirus argus</em>, in the waters off south Florida (USA), and it alters the behavior and ecology of this species in fundamental ways. Gross signs of HLV-PA infection are lethargy, morbidity, cessation of molting, and …
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Updated life history and population structure assessment of spiny dogfish, Squalus acanthias, in the Gulf of Maine
<p>Spiny dogfish (Squalus acanthias) are considered to be the most abundant shark species in the Western North Atlantic, but recently there was a decline in biomass estimates following a nearly ten-fold increase in fishery landings. Because fishing pressure has been shown to affect population …
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Calcium dynamics in dendrites and spines of spiny neurons in the somatosensory ‘barrel’ cortex of the rat
… the Ca2+ dynamics in dendrites and spines of spiny neurons of layer 4 of the somatosensory cortex in acute thalamocortical brain slices of young (P13-P15) rats. Back-propagating action potentials (bAPs) resulted in a transient rise in Ca2+ in all dendrites and spines tested, representing a …
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The rise and fall of the spiny lobster (Jasus edwardsii) in the Hauraki Gulf, northeastern New Zealand
The spiny lobster (Jasus edwardsii) is a critical sea urchin predator on Australasian rocky reefs. In New Zealand, J. edwardsii also supports the country’s most valuable inshore commercial fishery, and subsequently is subjected to intense fishing pressure. While marine reserves have long been shown …
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Spatially-Explicit Agent-Based Modeling of Ecosystem Change and Epizootiological Impacts on Caribbean Spiny Lobster, <i>Panulirus argus</i>
… agent-based, spatially-explicit model of the spiny lobster nursery of southern Florida that incorporates changing salinities, temperatures, and harmful algal blooms, and used it to evaluate the likely consequences of changes in hydrology due to the Comprehensive Everglades Restoration Program …
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Potential of a trap-fishery for the spiny lobster Palinurus delagoae off eastern South Africa : has the stock recovered?
… trap fishery for the deep-water lobster spiny lobster Palinurus delagoae commenced in 2004, and was run until 2006. Data collected by on-board scientific observers were used to explore fishing effort, catches and catch per unit effort. The recent data were compared with those for a …
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Migrations of spiny rock-lobsters, Jasus Lalandii, at Luderitz : environmental causes, and effects on the fishery and benthic ecology
A dispute arose in the Luderitz rock-lobster, Jasus lalandii, fishery as to whether declines in CPUE were due to changes in rock-lobster migration patterns or a reduction in fishable biomass. Rock-lobster migrations were studied at two sites by estimating in situ density in the 10-12m and 15-20m …
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The Implications of the Target-Area Hypothesis on the Population Dynamics of the Spotted Spiny Lobster, <i>Panulirus guttatus</i>
… success of isolated populations of the spotted spiny lobster, <em>Panulirus guttatus</em> in the Florida Keys, Florida (USA). In chapter I, I provide a general introduction to the problem. Chapter II describes how growth and size-at-maturity of <em>P. guttatus</em> in isolated populations on …
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Ecology of the Early Life History of the Caribbean Spiny Lobster, <i>Panulirus argus:</i> Recruitment, Predation, and Habitat Requirements
… postlarvae and early juveniles of the Caribbean spiny lobster. I examined patterns in postlarval supply, investigated wind forcing as a potential transport mechanism for recruiting postlarvae, and quantified predation on postlarvae in south Florida, USA. In an eight-year time series, spiny …
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Study on fisheries resources with particular reference to red coral, spiny lobster and other target demersal species in Sardinian Seas
… barbatus), red coral (Corallium rubrum) and spiny lobster (Palinurus elephas). These resources represent both ecological keystones and economic pillars for regional small-scale fisheries, yet have historically suffered from insufficient scientific evaluation. The first part of the research …
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