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 68 for “"amphipod"”.
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Biodiversity and Biogeography of Amphipod Crustaceans
… the taxonomy, biodiversity, and biogeography of amphipod crustaceans and is an attempt to address the significant knowledge gaps in the absence of global assessments of the diversity and biogeography of amphipods and put a regional-scale study in Indonesia into a global context. This thesis first …
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Comparative Systematics of Subterranean Amphipod Crustaceans (Hadzioidea)
… the systematics of genera within the amphipod families Hadziidae Karaman, 1943 and Melitidae Bousfield, 1973. In the family Hadziidae, <em>Bahadzia patilarga</em> is described from an anchialine cave on the southern coast of Cuba, <em>B. caymanensis </em>is described from a weakly …
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The physiological ecology of the specialist lagoon amphipod, Gammarus insensibilis
… with parasites for the specialist lagoon amphipod, Gammarus insensibilis (Stock). For comparison information is also presented on the reproductive investment of the lagoonal isopod Idotea chelipes (Pallas). <br/><br/>Gilkicker lagoon on the south coast of England, UK, from which the …
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Molecular Studies on Head Development of the Amphipod Crustacean Parhyale hawaiensis
… daher Homologe bekannter Kopfregulatoren aus dem amphipoden Krebs Parhyale hawaiensis. Anteriore Determination wird als eine mögliche anzestrale Funktion von orthodenticle (otd) diskutiert. Im Gegensatz zur Situation in Insekten ist Parhyale otd1 (Ph otd1) jedoch nicht während der Ausbildung …
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Comparative Systematics of Subterranean Amphipod Crustaceans in the Families Crangonyctidae and Bogidiellidae
… two different taxonomic groups of subterranean amphipods (Crustacea). Therefore, rather than being a single project, this study is divided into several sub-projects. Altogether, the chapters for the sub-projects are composed of five publications. An introductory chapter and a summarizing …
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Hypoxia and Ventilation of the Marsupium in the Amphipod, Gammarus Pseudolimnaeus Bousfield
Amphipod crustaceans brood their eggs and young within a marsupium formed by the oostegites of the thoracic legs. I investigated the processes that deliver oxygen and food into the marsupium of Gammarus pseudolimnaeus, a freshwater amphipod common in eastern North America. Dissolved oxygen (DO) in …
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Distribution and dispersal of the non-native caprellid amphipod, Caprella mutica Schurin 1935
The introduction of non-native species is the second most important anthropogenic threat to global biodiversity, with the first being habitat destruction. In the UK, we have been fortunate to date, that the majority of marine non-native species have not caused significant adverse ecological …
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Intersexuality and Endocrine Disruption in the Amphipod Echinogammarus marinus – From Genes to Physiology
The intertidal amphipod (Echinogammarus marinus LEACH) exhibits several forms of intersexuality (intersex males and intersex females) and has been considered an ideal model to study reproductive endocrine disruption in Crustacea. This study aimed to investigate both the physiology and gene …
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Systematics of the Freshwater Amphipod Genus <i>Crangonyx</i> (Crangonyctidae) in North America
<p>The systematics of the amphipod genus <em>Crangonyx</em> of North America (north of Mexico) is revised, based on available collections (ca. 2240) and literature dealing with the genus. A grand total of 42 North America species of <em>Crangonyx</em> are recognized in the present study, 24 of them …
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Macroinvertebrates associated with macrophytes in Sodwana Bay : with further consideration of amphipod taxonomy
The study site for this thesis is Sodwana Bay, focus of the African Coelacanth Ecosystem Programme, a multidisciplinary project centered on understanding the Coelacanth habitat of Sodwana Bay at an ecosystem level. Globally and locally, the biodiversity of small species is under-studied. While …
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STUDIES ON THE ECOLOGY OF HYALE NILSSONI (RATHKE) 1843, AN ALGAL-INHABITING AMPHIPOD CRUSTACEAN
… tolerances of the talitroidean amphipod crustacean, Hyale nilssoni were studied at open coastal and estuarine rocky intertidal shores of New Hampshire. Microhabitat distribution and mouthpart morphology of the sympatric H. nilssoni and H. plumulosa were also compared at Nobska …
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Hypoxia-Limited Survival, Respiration, and Mate-Guarding Behavior in the Amphipod Gammarus Pseudolimnaeus Bousfield
… on precopulatory mate-guarding behavior of the amphipod, Gammarus pseudolimnaeus, were tested to determine if seasonal hypoxia in Lake Taneycomo could be a limiting factor for amphipods in the lake. Currently, the Army Corps of Engineers uses oxygenation procedures at Table Rock Dam to defend …
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Determining The Occurrence, Fate, And Effects Of Pesticide Mixtures Using The Aquatic Amphipod Hyalella Azteca
… water-only toxicity test with the aquatic amphipod <i>Hyalella azteca</i>. The second goal was to analyze an existing database of chemical concentrations using a toxicity-based screening approach in order to estimate the environmental hazard posed by mixtures of pyrethroid, organochlorine, …
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POPULATION ECOLOGY AND PRODUCTION OF THE SANDY-BEACH AMPHIPOD HAUSTORIUS CANADENSIS (CRUSTACEA: HAUSTORIIDAE) (MAINE, NEW ENGLAND)
… much is known concerning the structure of the amphipod-dominated marine sandy-beach communities along the Atlantic coast of the United States, little is known about the functional relationships within them. The goal of this study was to determine the seasonal trophic dynamics and life history …
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The systematics, distribution and aspects of the ecology of the freshwater amphipod genus Paramelita (Crangonyctoidea: Paramelitidae)
Freshwater amphipods in southern Africa are divided into three distinct elements. Five ingolfiellid species occur in Namibia, six Sternophysinx species are found in the northern Cape Province and Transvaal, while 12 Paramelita species are restricted to the south-western Cape. The crangonyctoid …
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Toxicological studies of the combined effects of aluminium, copper and manganese on a freshwater amphipod in acidic waters
… metals (Al, Cu and Mn) on the endemic freshwater amphipod Paramelita nigroculos (Barnard) from the south-western Cape region of South Africa. The aims of the work were three-fold: to examine the toxic effects of combinations of the three metals; to investigate such effects on an indigenous aquatic …
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Comparisons of Secondary Production, Life History, and Mouthpart Functional Morphology Between Two Populations of the Amphipod Gammarus minus
… to feeding activity of two populations of the amphipod Gammarus minus were compared. The two populations occupied different habitats, and I attempted to determine whether differences observed between the two populations were related to habitat. Annual production and life history of the …
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Comparative analysis of aquatic insect, amphipod, and isopod community composition along environmental gradients in rheocrene spring systems of Missouri
… in these systems. In this study, aquatic insect, amphipod, and isopod communities were examined in 16 spring systems in Missouri, in some of which associated environmental gradients were also measured. The goal of this study was to create a comprehensive list of species present in all studied …
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