Seasonal patterns of growth in Arctic Charr (Salvelinus alpinus L.): differences between morphs of Cumberland Sound populations

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dc.contributor.authorGrenier, Gabrielle
dc.contributor.examiningcommitteeAnderson, Gary (Bilogical Sciences)en_US
dc.contributor.examiningcommitteeGillis, Darren (Biological Sciences)en_US
dc.contributor.examiningcommitteeHowland, Kimberly (Environment and Geography)en_US
dc.contributor.supervisorTallman, Ross (Biological Sciences)en_US
dc.date.accessioned2018-09-14T20:51:12Z
dc.date.available2018-09-14T20:51:12Z
dc.date.issued2018-08-23en_US
dc.date.submitted2018-08-29T22:26:06Zen
dc.degree.disciplineBiological Sciencesen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractArctic Charr (Salvelinus alpinus L.) are phenotypically variable with multiple life history eco-morphotypes. The mechanism determining life history trajectory remains undiscovered. At maturity, anadromous individuals have greater seasonality in their growth and feeding relative to their resident conspecifics. To determine if lifelong seasonal and annual growth patterns differ between resident and anadromous individuals I measured otolith increment widths with a semi-automated method. I found that there has been a linear increase in growth in Arctic Charr between 1990 and 2015. Additionally, anadromous Arctic Charr have greater growth and seasonality in their growth relative to their resident conspecifics and these patterns are consistent at all ages. Finally, a probable life history trajectory can be assigned to Arctic Charr based on the seasonal growth pattern in the first year of life. In conclusion, further studies examining factors influencing early development are essential to elucidate the mechanism behind life-history trajectory in Arctic Charr.en_US
dc.description.noteOctober 2018en_US
dc.identifier.urihttp://hdl.handle.net/1993/33397
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectArctic Charren_US
dc.subjectLife history trajectoryen_US
dc.subjectGrowthen_US
dc.titleSeasonal patterns of growth in Arctic Charr (Salvelinus alpinus L.): differences between morphs of Cumberland Sound populationsen_US
dc.typemaster thesisen_US
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