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Investigating Fluctuating Asymmetry Of The Larval Damselfly, Calopteryx Maculata (Odonata: Calopterigidae), Edward Kelliher
Investigating Fluctuating Asymmetry Of The Larval Damselfly, Calopteryx Maculata (Odonata: Calopterigidae), Edward Kelliher
Undergraduate Review
Fluctuating asymmetry (FA), or subtle random deviations from perfect bilateral symmetry, has recently become a useful tool in allowing researchers to understand more about an organism's health, fitness, developmental stability and environmental stressors. Ultimately, FA studies can be used as an indirect measurement of the quality of an aquatic system over time. We measured and examined the femur segments of the larval damselfly, Calopteryx maculata from sites on the Town, Hockomock, and Salisbury Plain Rivers, of Plymouth County, Massachusetts to determine FA levels. After accounting for measurement error, preliminary results show that variations in symmetry are not correlated to individual …
Chronological Patterns Of Emergence Of Dragonflies In Carver Pond, Bridgewater, Ma, Chris Haslam
Chronological Patterns Of Emergence Of Dragonflies In Carver Pond, Bridgewater, Ma, Chris Haslam
Undergraduate Review
In this study larval skins of dragonflies were collected counted and studied in order to find peaks and patterns of emergence and correlate with environmental factors. One of the most important stages of the life of a dragonfly is the time when it changes from a larval aquatic insect into a flying adult. This stage takes place when the dragonfly emerges out of its skin called the exuvia. Exuvia were collected from two sites at Carver Pond, Bridgewater, Massachusetts to determine differences in species emergence patterns from May 26, 2003 to July 18, 2003 and correlated with environmental conditions. Peak …