Global ETD Search
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Showing 1 to 7 of 7 for “"Fish Biology"”.
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Towards a Pangenome Perspective on the Lake Malawi Cichlid Radiation
The cichlid fishes in the East African Rift lakes are one of nature’s most spectacular vertebrate radiations and form an excellent system to study the evolutionary process of speciation. Lake Victoria, Malawi and Tanganyika are each home to hundreds of species with a wide spectrum of sizes, …
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Sea lice infestation on wild salmonids in the southern part of the Icelandic Westfjords
Laxalús, Lepeophtheirus salmonis og grálús Caligus elongatus, eru náttúruleg sníkjudýr á laxfiskum í sjó. Lýsnar nærast á slímhúð, roði og blóði fiskanna og valda þannig streitu hjá þeim. Þær geta einar og sér valdið dauða fiska séu þær í miklum mæli en geta auk þess borið með sér aðra sýkla. …
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The effects of water quality on the growth of lumpfish (Cyclopterus lumpus)
Lumpfish (Cyclopterus lumpus) are of economic value as a biological lice control of Atlantic salmon (Salmo salar) in sea cages, reducing or eliminating the need for chemical or mechanical treatments for sea lice (Lepeophtheirus salmonis, Caligus elongatus). Lumpfish aquaculture production is still …
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Applying edge-core theory of intraspecific life-history variation to the control of invasive silver carp (hypophthalmichthys molitrix)
… molitrix) are an invasive cyprinid fish that were introduced to North America in the 1970s and have since spread throughout the Mississippi River Basin. During the 2000s, silver carp invaded the Illinois River and began advancing towards the Laurentian Great Lakes, making them a …
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Variation in shoaling behavior in lake Mývatn threespine stickleback in relation to temperature and origin
… behavior of juvenile stickleback of lake Mývatn. Fish were reared at contrasting temperatures (22 °C and 13°C) for 5-7 months. Shoaling was tested by placing a single fish in an arena with a shoal and two distractors and behaviour recorded for 15 minutes, where time spent near the shoal was …
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DISPERSAL MECHANISMS OF EMBRYONIC AND LARVAL BURBOT (LOTA LOTA)
<p>Many teleost fish produce planktonic larvae that primarily rely on hydrodynamic forces for dispersal. However, allometric growth patterns and larval behavior also plays a significant role in dispersal. The developmental timeline of dispersal mechanisms in burbot (<em>Lota lota</em>) larvae is …
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Geomorphic Assessment and Flow Modeling of Pearl Darter (Percina aurora) Habitat in the Pascagoula River Watershed
… factor in habitat assessment for freshwater fishes. A crucial feature commonly seen in alluvial stream systems are sandbars, which are dynamic and variable sediment structures that are known to have many associated species. One such species is the Pearl Darter, <em>Percina aurora</em>, a …