Browsing Masters Theses by Author "Weir, Laura K."

Now showing items 1-6 of 6

Changes in adult Atlantic salmon (Salmo salar) run timing in the Miramichi River, New Brunswick, in relation to river temperature and discharge rates over seven decades

Mercer, Kelsey Lynn (Halifax, N.S. : Saint Mary's University, 2023-12-13)

Atlantic salmon (Salmo salar) is a culturally, economically, and ecologically important species in Eastern Canada. Populations have been declining in recent decades, which can have negative implications for livelihood, ...
Ecological drivers of inter- and intra-population variation of sexually-selected traits in brook trout (Salvelinus fontinalis)

Cluney, Victoria Ann (Halifax, N.S. : Saint Mary's University, 2020)

Although mating systems are generally considered fixed properties of species, ecological factors can play an important role in the degree to which sexual selection acts on mating related traits in a population. Differences ...
Mate choice in white and common threespine sticklebacks (gasterosteus aculeatus)

Corney, Rachel Helen (Halifax, N.S. : Saint Mary's University, 2021)

During speciation, mate choice can reproductively isolate one group from another through selection on divergent traits and behaviours such as colouration, courtship behaviour, and/or body size. Reinforcement can also ...
Nuptial colouration and breeding behaviour in the white threespine stickleback (Gasterosteus aculeatus)

Haley, Anne L. (Halifax, N.S. : Saint Mary's University, 2018)

The white Threespine Stickleback (Gasterosteus aculeatus) is an ecotype endemic to brackish environments in mainland Nova Scotia and the Bras d’Or Lake. During the breeding season, ‘white’ males are bright white and provide ...
Plasticity and selection of male sexual traits across operational sex ratios in Japanese medaka (Oryzias latipes)

Allen, Emily R. (Halifax, N.S. : Saint Mary's University, 2019)

In many species, the mating advantage associated with sexually-selected traits may vary with operational sex ratio (OSR; the number of sexually active males to fertilizable females in a population), and this metric is often ...
Reproductive isolating mechanisms influencing the direction of Banded Killifish (Fundulus diaphanus) x Common Killifish (F. heteroclitus) hybridization in Porter’s Lake, Nova Scotia

MacPherson, Nathalie (2021)

Hybridization events provide opportunities to examine the mechanisms influencing interspecific reproductive isolation. In Porter’s Lake, Nova Scotia, hybridization between two killifish species (Fundulus heteroclitus ...