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 34 for “"cyprinid"”.
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Predicting the ecological consequences of river management for a riverine cyprinid fish.
… to test the impact of environmental change on cyprinid fish, enabling the modelling system to be used to develop proactive, evidence-based management in light of current rates of environmental change.
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Study of the roles of Cyprinid herpesvirus 3 ORF134 in the biology of the infection
… lethal pathogen called koi herpesvirus (KHV) or cyprinid herpesvirus 3 (CyHV-3) began to cause severe financial losses in these two carp industries worldwide. In 2005, CyHV-3 has been classified in the Alloherpesviridae family of the order Herpesvirales. Because of its economic importance and its …
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Population crash of an endemic South African cyprinid: the role of non-native fish, drought and other environmental factors
… sandfish (Labeo seeberi), an endangered cyprinid, has declined across its range in the CFE and currently exists in only a handful of tributaries of the Doring River in severely fragmented populations. The last remaining recruiting sandfish population occurs in the Oorlogskloof River, …
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The comparative osteology and taxonomy of the North American cyprinid genera, Richard-sonius, Clinostomus and Semotilus, with notes on other minnows
… the eight chubs and daces of the North American cyprinid genera <i>Richardsonius, Clinostomus</i> and <i>Semotilus</i>. The primary objectives were to approach the whole skeleton as an adaptive mechanism and to study the taxonomy of these fishes. In order to gain perspective, a limited survey was …
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Factors affecting the growth and recruitment of cyprinid populations of the River Wensum, Eastern England, with specific reference to roach Rutilus rutilus (L.).
1. The roach Rutilus rutilus population of the River Wensum, Eastern England, has long been the topic of deliberation amongst the angling community due to a perceived decline in their catches since the 1970s. Analysis of fish population survey data collected by the Environment Agency and its …
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Short and Long-term Changes in the Fish Assemblages of Bayou Lacombe, Louisiana
… also documented the disappearance of nearly all cyprinid species over the past 35 years.
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Occurrence and Impact of the Asian Fish Tapeworm Bothriocephalus acheilognathi in the Rio Grande (Rio Bravo del Norte)
… about potential impacts on other endemic cyprinid species.
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Occurrence and Impact of the Asian Fish Tapeworm Bothriocephalus acheilognathi in the Rio Grande (Rio Bravo del Norte)
… about potential impacts on other endemic cyprinid species.
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Otolith morphologies in the genus sinocyclocheilus
Sinocyclocheilus is a genus of Cyprinid fish found in southern China. This genus contains 68 species of which 40 species have adaptations for life in cave habitats. A common adaptation seen in fish that live in caves with no light is the loss of vision. Such cavefish must therefore rely on other …
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Inter-specific hybridization in the fish family Cyprinidae
… hybridization is a widespread phenomenon amongst cyprinid fishes. There are seventeen cyprinid species occcurring in the British Isles, within five sub-families, giving rise to some ten different types of hybrid. Most of these belong to the sub-family Leuciscinae. The most commonly occurring …
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Ecology and conservation of Garra ghorensis, an endangered freshwater fish in Jordan
… focal species of the research was the freshwater cyprinid fish Garra ghorensis. Endemic to the southern Dead Sea basin of the Middle East, it is ‘Red listed’ by the IUCN as ‘endangered’. It inhabits the small rivers of the basin (‘wadis’), existing within fish communities of very low species …
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Applications of fish scale analysis to understand growth dynamics of fish populations
… success (year class strength, YCS), for three cyprinid fish. This study found that climate change is likely to increase the propensity for cyprinid fish to thrive, although the exact mechanism will depend on inter-annual variability in temperature rises and the timing of flow events. …
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Fish scales as ecological indicators: empirical approaches to improve their practical application to fish ecology
… analysis (SIA). The research used fishes of the Cyprinidae family as the focal species. Cyprinids are of substantial global, socio-economic importance as their communities are valued ecologically, commercially and recreationally. The research assessed current methodologies, highlighted extant …
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Applying ecological models to positive interactions among lotic fishes: implications for population and community regulation at multiple spatial scales
… research on positive interactions. Many minnows (Cyprinidae) of eastern North America engage in a potentially mutualistic reproductive interaction known as nest association, in which individuals of one species (nest associates) spawn in nests constructed by host species. In nest association, hosts …
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Fish-Habitat Associations in Small Backwaters of the Upper Missouri River, North Dakota
… backwaters; one group was comprised of cyprinids and catostomids, while the other consisted of centrarchids and percids. The two assemblages generally preferred different habitat characteristics and were rarely found in large numbers together. The cyprinid-catostomid assemblage tended to …
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The ecology of larval and juvenile fishes in lowland rivers, with particular emphasis on foraging
… and abiotic factors that affect the abundance of cyprinid fish stocks in rivers, many of which are poorly understood. The role of food availability during critical life stages is one of these factors that may determine the growth and survival of 0+ fishes, and ultimately their recruitment to …
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Genetic factors affecting establishment during invasions : the introduction of the topmouth gudgeon (Pseudorasbora parva) and the rainbow trout (Oncorhynchus mykiss) in Europe
… gudgeon (Pseudorasbora parva) is an Asian cyprinid that is found in most European countries as a result of accidental introductions. Rainbow trout (Oncorhynchus mykiss) has been introduced from the United States for aquaculture and angling, however, despite numerous introductions, it has …
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The fathead minnow embryo as a model for the development of alternative testing methods in ecotoxicology.
The fathead minnow, Pimephales promelas, a small cyprinid from North America, is widely used as laboratory test fish. In the present study, rearing and breeding conditions for the fat-head minnow were optimized in our laboratory to produce eggs on a regular basis for testing. Firstly, these eggs …
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Invasion and evolutionary history of a generalist fish parasite.
… significant risk to native biodiversity. The cyprinid fish species, Pseudorasbora parva, is a well-studied example of accidental introduction to a new range; it has been accidentally introduced from China to Europe. Pseudorasbora parva has been hypothesized to have also introduced the …
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