Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Rostrum"”.
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Morphology, phylogeny, and evolutionary development in the weevils (Insecta: Coleoptera: Curculionoidea)
… and to gain a comprehensive understanding of rostrum structure prior to developmental studies examining its formation, a comparative study also was conducted of rostrum structure throughout Curculionoidea through examination of semi-thin sections. The weevil rostrum, for example, is a key …
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Studies on Species of the Aphid Genus Cinara on Pinus Edulis and Pinus Monophylla
… were larger when on P. monophylla, but the rostrum of C. terminalis showed the reverse trend, being shorter when feeding on P. monophylla than when on P. edulis. The analysis of rostrum length showed that this particular character can be independent of aphid size. In Chapter 3, I used …
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Hypnotizability and Corpus Callosum Morphology
… had a significantly larger CC volume in the rostrum and isthmus, inferred to reflect larger transcallosal axon diameter or greater axon myelination. For highs, but not lows, there were significant relationships between forebrain volume and the total CC, rostrum, and splenium. Findings provide …
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Functional anatomy of the Macrouridae (Teleostei, Gadiformes)
… ones. A highly protrusible mouth and long rostrum are adaptations for benthic feeding and have appeared in three independent evolutionary lines within the group. Macrourids that are predators on benthos tend to be small and live at depths shallower than 2000 meters.
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Descrição morfológica do crânio e mandíbula de Stratiotosuchus maxhechti (Crocodylomorpha, Cretáceo Superior do Brasil) e seu posicionamento filogenético
… of the São Paulo State. The laterally compressed rostrum, the presence of a huge, strongly grooved and flexed jugal, and the presence of only five maxillary theropodomorph teeth supports the allocation of Stratiotosuchus maxhechti to the Baurusuchidae. lt differs from other species of this clade …
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An Examination of Aggressive Behavior in Indo-Pacific Bottlenose Dolphins (<i>Tursiops Aduncus</i>)
… approaches were directed most often toward the rostrum, while perpendicular approaches were most often directed toward the sides. Additional research on other wild populations is needed in order to clarify the generality of these findings and the overall significance of behavioral context on …
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Bat Skull Evolution: the Impact of Echolocation
… generate stronger bites and species with a short rostrum generate higher bite forces relative to their body size. Sensory parameters (i.e., echolocation characteristics) scale with skull size and correlate with skull shape in insectivorous species. I estimated the relative effects of feeding and …
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Rodent pollination in Androcymbium latifolium (Colchicaceae)
… and in the fuschin gelatine swabs from the rostrum area of the rodents; and observations of captive A. namaquensis individuals foraging for nectar non-destructively in A. latifolium inflorescences. The exclusion of rodents from inflorescences resulted in a significant decrease in seed set …
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Taxonomic, systematic, morphological and biological studies on Palaemon Weber, 1795 (Crustacea: Decapoda: Palaemonidae)
… investigate alleged differences in carapace and rostrum shape. Two different studies were instigated to investigate the invasive species Palaemon macrodactylus. The first of these scrutinised and synthesised available data and presented hypotheses on modes of spread, patterns of spread, potential …
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Geometric Acoustic Modeling of the LDS Conference Center
… Comparisons have shown that positions on the rostrum were especially difficult positions to model in this hall. Significant differences were not found between the preliminary models and the refined models. There was not significant evidence showing that either the EASE™ or the CATT™ model was …
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Spatiotemporal trends and relationships in the abundance, growth, and condition of common nearshore fishes of southwest Lake Michigan
… method on measurements made to the post-rostrum radius. Accuracy was significantly related to growth rate and based on previous research it was concluded that unusually fast or slow growth can both cause a decoupling of otolith and somatic growth, increasing back-calculation error.
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The biology and macroparasites of the sixgill sawshark Pliotrema warreni
… mass, total length, standard length, girth, rostrum length, interoccular to pre-caudal length, first dorsal origin to second dorsal origin, first dorsal origin to pre-caudal origin, and mouth width. The equation for mass (g) vs. total length (mm) was ln(Mass)=0.2997*ln(TL)+2.0383 for females …
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Distribution, Age, and Growth, and Feeding Ecology of Paddlefish (Polyodon spathula) In Unaltered Missouri River, South Dakota
… of these fish had lost part or all of their rostrum. Sixty-seven percent of the fish tagged which were recapture traveled downstream, 26% upstream, and 7% stayed in the same area. Three fish ranged 680 to 780 km within 3 to 8 months after capture. Food of paddlefish was strongly indicated. …
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Geographic variation in the phenotype of an African horseshoe bat species, Rhinolophus damarensis, (Chiroptera: Rhinolophidae)
… in the skulls was based on changes in the rostrum, anterior medial swelling and brain case. Some populations had slightly deeper rostra, slightly larger anterior medial swellings and smaller braincases, whilst others had slightly shallower rostra, slightly smaller anterior medial swellings …