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 20 of 31 for “"Gape"”.
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Development, Validation, and Evaluation of a Continuous, Real-time, Bivalve Biomonitoring System
… tool to assess water quality using bivalve gape behavior was developed and demonstrated. The purpose of this work was to develop methodologies for screening water quality appropriate to the goals of the watershed paradigm. A model of bivalve gape behavior based on prediction of behavior …
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Determinants Of Bite Force In Four Species Of Sharks From The Gulf Of Mexico With An Emphasis On The Atlantic Sharpnose Shark, Rhizoprionodon Terraenovae
… in bite force between size, sex, season, gape, and capture method. Additionally, I examined bite force differences between anterior and posterior positions in the jaw, and considered correlations between various head morphometrics and anterior bite force. Sharpnose sharks, ranging between …
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Phokelelo ya kgaso mo barutwaneng ba Setswana Puo ya Gae Mephato ya 11 le 12
… di rulagantsweng bontlhabongwe. Go dirisitswe gape le kgatiso ya lenaneo la ‘Sekhutlhwaneng sa dithuto’ mo Motsweding FM, kgatiso ya kgaolo ya terama ya ‘The Queen’ mo thelevišeneng le tepo ya mo phaposiborutelong. Go dirisitswe le kutlo-kgatiso go thusa go fitlhelela tshedimosetso yotlhe. …
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Diet and Feeding-Related Morphometrics of the Blackstripe Topminnow, <i>Fundulus notatus</i>, in Allotropic and Syntopic Populations with the Blackspotted Topminnow, <i>Fundulus olivaceus</i>
… length, orbit length, postorbital length, gape width, gape height, maxillary length, and dentary length). Morphometric analyses were conducted to determine if there were ontogenetic shifts or sexual dimorphisms in allotopic and syntopic populations. Analyses were also conducted to determine …
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A survey of cataclysmic variables from the Edinburgh-Cape Blue object survey
This thesis is based on the Edinburgh-Gape Blue Object Survey and includes a general review of blue star sky surveys, a detailed discussion of the selection techniques, the present status of the survey, and follow-up photometry and spectroscopy of the cataclysmic variable stars (GVs) found by the …
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Examining the trophic ecology of five myctophid genera in the southern Benguela using morphological, stomach content and stable isotope analyses
… analysis determined the relationship between gape and fish size for each genus and compared these between genera. The stomach content analysis evaluated the relative importance of prey items using percent frequency of occurrence (%F), percent numerical abundance (%N) and percentage …
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Food Habits of Larval Ringed Salamanders, Ambystoma Annulatum
… were not frequently present in the diet and gape size did not explain much of the variation in maximum prey size.
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Genotype-by-Floral Characteristics Interaction for Hybrid Wheat (Triticum aestivum L.) Production in Texas
… extrusion, anther score, stigma exsertion, gape, and plant height in College Station and McGregor, TX for two years. The results of combined environment analyses indicated that genotypic variances were significantly different for all floral characteristics. Non-gender and male traits had …
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EFFECTS OF ALTERNATIVE PREY AS A BUFFER TO PREDATION OF CHANNEL CATFISH (ICTALURUS PUNCTATUS) BY LARGEMOUTH BASS (MICROPTERUS SALMOIDES)
… have pectoral spines that lock to defend against gape-limited predators such as largemouth bass. Previous work indicated that spines increase survival of channel catfish exposed to bass but did not determine whether bass avoid catfish if less dangerous species are available. We presented bass with …
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Feeding ecomorphology in angelfishes, f. Pomacanthidae: the implications of functional innovations on prey-dislodgement in biting reef fishes
… increase mechanical complexity and expand jaw-gape, in angelfishes the joint is a synapomorphy with novel gape-restricting kinematics. Individual means of the 32 most informative kinematics variables in Pomacanthus were extracted from high-speed video of feeding events. Concordant with …
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Life history and bioenergetic modelling of adfluvial-lacustrine coastal cutthroat trout predation in the Capilano Reservoir : implications for endangered steelhead, coho salmon and future holistic watershed management strategies
… steelhead out-migrants was detected, and a gape prey maximum of 36% of predator body length was found. Moderate hybridization rates between cutthroat and rainbow trout were detected, as well as previously unknown pure strains of adult rainbow trout in reservoir waters, indicating reservoir …
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Display behavior of an Hispaniolan anole: Anolis bahorucoensis
… typical of the Anolis genus, including: mouth gape/tongue protrusion, gular expansion/dewlap extension, dorsal and nuchal crests, lateral compression, lateral presentation and bow. Two modifiers performed by males were unique to A. bahorucoensis: labeled as "hip-kick" and “head-swing". Use of …
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Feeding kinematics of the grotto salamander, Eurycea spelaea
… to variable continuum. The length of the gape cycle of E. spelaea corroborates with earlier findings that the time of movements are directly proportional to linear body size. Future studies should include buccal pressure measurements and analysis of the feeding behavior of the transformed …
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Behavioral and Metabolic Responses of the Southern Red-Backed Salamander (Plethodon Serratus) to Predatory Stimuli: Influence of Body Size
… also may be less vulnerable to predation by gape-limited predators, like snakes.
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Measuring variation in body morphology and life history traits in Brook Stickleback (Culaea inconstans), Eastern Washington, USA
… depth, head length, head depth, eye diameter, gape width, and dorsal spine length (p< 0.00455). These results may lay the groundwork for future studies that may determine with more certainty how traits are changing and how quickly.</p>
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Assessment of the Feeding Ecology of Native and Non-Native Freshwater Bivalves in a North Carolina River Basin
… laboratory dose-response experiment with a valve gape sensor. Chapter 1 results of the long-term (36 month) analyses suggest that dominant watershed type was a predictor of mean 15N values of nitrate (NO3-). Also, mean 15N tissue values of Elliptio complanata from agricultural sites were …
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Effects of the Exotic Cladoceran Daphnia Lumholtzi (Sars) on the Growth Rate and Prey Selection of Bluegill Sunfish (Lepomis Macrochirus Rafinesque)
… may be limited. Once fish grow beyond mouth gape limitations for D. lumholtzi, this exotic may serve as an added food resource when there are no large-bodied cladocerans in the plankton. The results of this study suggest that the invasion of zooplankton communities by D. lumholtzi can affect …
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The importance of density-dependent mechanisms in determining cohort survival in largemouth bass
… piscivory at an earlier date due to release of gape limitations. Otolith and microsatellite data suggest that earlier hatched fish contribute the most to the final population of age-1 bass recruits. Reduced recruitment of the smaller, later cohorts is currently believed to be a …
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Abiotic and biotic factors influencing the decline of native unionid mussels in the Clinch River, Virginia
… facilitate movement of particles into the pedal gape. Intermittent sediment toxicity was found in laboratory bioassays using Daphna magna and Chironomus riparius. These data, along with fluctuating metals in the Clinch River sediments, indicated that acute insults existed from which recovery …
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