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Showing 1 to 18 of 18 for “"Decapod crustaceans"”.
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The decapod crustaceans of Iowa
1 PDF file (x, 149 pages)
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Dactyls reveal evolutionary patterns in decapod crustaceans
… potential and uses in foraging and defense, decapod crustacean dactyls (movable fingers of claws) are potentially excellent test subjects for an ongoing debate concerning the relative importance of top-down (predators) and bottom-up (prey) controls on morphologic diversification and …
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Ecophysiological adaptations to salinity variation in early life-history stages of decapod crustaceans
Decapod crustaceans which successfully invade habitats with hypo-osmotic conditions must show strong hyper-osmoregulatory capacities, stable growth also at reduced salinities, strongly differentiated ion-transporting tissues, high activities of Na+-K+-ATPase, and an enhanced expression of mRNA …
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Aspects of the physiology of decapod crustaceans with particular reference to the live marketing of Cancer pagurus (L) and Necora puber (L)
The crabs Cancer pagurus (L) and Necora puber (L) are exported live, in bulk, from the UK to various continental countries. The success of this relatively new trade is marred by the incidence of mortalities and impaired quality of the delivered product. These studies addressed various causes - …
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Chemical communication and its ecological consequence in the Lysmata shrimp
Male crustaceans must find and identify receptive females to mate successfully. Mate recognition depends mainly on sex pheromones, which are detected by antennae and antennules. Distance (soluble)pheromone mediates mating behaviour of some decapod crustaceans. Contact pheromone (an insoluble …
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Palaeoecology and taxonomy of the macrobenthic fauna from the Upper Cretaceous Ajlun Group, southern Jordan
… each. Additionally, at least two species of decapod crustaceans were found. One bivalve species is new: Anthonya jordanica from Cenomanian claystones of the eastern study area. 41 quantitative samples of the benthic invertebrate fauna were grouped into nine associations and three assemblages …
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Patterns of Diurnal Vertical Distribution and Dispersal-Recruitment Mechanisms of Decapod Crustacean Larvae and Postlarvae in the Chesapeake Bay, Virginia and Adjacent Offshore Waters
… and economically important populations of decapod crustaceans. Vertical positioning in the water column plays a major role in the particular strategies of retention or expulsion with immigration.</p> <p>The present study was undertaken to investigate variations in vertical distribution …
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Macrogeographic Genetic Structure in Acanthephyra curtirostris (Oplophoridae)
… about the nature of microsatellite arrays in decapod crustaceans. The microsatellite repeats isolated from <em>A. curtirostris</em> - the first reported from a caridean shrimp - were found, like those in other decapods, to be abundant, generally long, and extraordinarily complex when compared …
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THE STATUS OF OTTERS (CARNIVORA : MUSTELIDAE : LUTRINAE) IN SINGAPORE AND MALAYSIA, AND THE DIET OF THE SMOOTH OTTER (LUTROGALE PERSPICILLATA) IN PENANG, WEST MALAYSIA
… of fish (100% occurrence) and partly of decapod crustaceans (24% occurrence). Besides this, no other animal components were found in the diet. There was also no evidence of seasonality. This contrasts with the other common species of otter in Malaysia, A. cinereus, which appears to feed …
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Neuropeptide hormones from the eyestalks of Jasus Lalandii
… gland complex, situated in the eyestalks of decapod crustaceans, are known to be a source of a variety of neuropeptide hormones that regulate a number of diverse physiological processes. This neuroendocrine complex was investigated in 3 crustacean species, viz. the European shore crab …
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Exploring the Interface Between Macroorganisms and Microorganisms: Biochemical, Ecological, and Evolutionary Contexts
… of microorganisms. I showed that two types of decapod crustaceans can physically manage microorganisms on most parts of their body, but certain parts are particularly sensitive or difficult to clean mechanically. I examined sensory regions on the fiddler crab, including dactyls that are …
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Soft sediment ecology of Lough Hyne Marine Reserve - spatial and temporal patterns
… the Western Trough was devoid of visible fauna. Decapod crustaceans were the first taxon to make use of ameliorating oxygen conditions in autumn, by darting below the thermocline depth, most likely to scavenge. This was indicated by tracks that they left on the surface of the Trough floor. Some …
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Drivers and effects of plastic contamination in aquatic ecosystems
… using economically and ecologically key crustaceans Palinurus elephas (Fabricius, 1787) and Nephrops norvegicus (Linnaeus, 1758) collected from sites located on the western coast of Sardinia, at depths comprised between 25 and 660 m was investigated. The results suggest that both P. …
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Developmental changes in the structure and function of lobster hemocyanin
… invertebrate species, particularly amongst the decapod crustaceans, contain hemocyanin as the oxygen binding protein. Previous investigations have revealed a great deal about the structural and functional properties of this respiratory pigment, but a number of important questions remain …
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Stable Carbon and Nitrogen Isotopes of Shell Bound organic Matter, Implications for Modern and Ancient Food Web Dynamics
… and actively fed on small organisms like decapod crustaceans, copepods and ammonite larvae. Although several studies in the past attempted to understand the feeding habit of Baculites by analyzing the morphology of its feeding apparatus and imaging of its buccal mass, this study is the …
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Sensitivity to chemical stimuli plays a fundamental role in the food preferences. Examples in the evolutionary scale: 1. Role of the walking leg chemoreceptors in the red swamp crayfish Procambarus Clarkii 2. PROP bitter taste sensitivity and its nutritional implications in Humans
… Procambarus clarkii (Girard, 1852) (Crustacea: Decapoda) is an invasive species of freshwater habitats that has spread worldwide. In crayfish, like in other decapod crustaceans, reception of chemical cues occurs by way of peripheral chemoreceptors grouped within sensory hairs and typically …
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Enviromental influences on the spatio-temporal distribution of Aristeus Antennatus (Risso, 1816) and Aristaeomorpha Foliacea (Risso, 1827) in the Central-Western Mediterranean
… on the spatio-temporal distributions of the decapod crustaceans A. antennatus and A. foliacea. The first part provides information on the abundance and geographical distribution of deep-water red shrimps using 19 years of trawl survey data. Both red shrimps species occur almost exclusively on …