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Full-Text Articles in Animal Sciences
Growth Of Atlantic Salmon (Salmo Salar) In Freshwater, Douglas Bradlee Sigourney
Growth Of Atlantic Salmon (Salmo Salar) In Freshwater, Douglas Bradlee Sigourney
Open Access Dissertations
Growth plays a key role in regulating ecological and population dynamics. Life history characteristics such as age at maturity, fecundity and age and size at migration are tightly linked to growth rate. In addition, size can often determine survival and individual breeding success. To fully understand the process of growth it is important to understand the mechanisms that drive growth rates. In Atlantic salmon, growth is critical in determining life history pathways. Models to estimate growth could be useful in the broader context of predicting population dynamics. In this dissertation I investigate the growth process in juvenile Atlantic salmon (Salmo …
Comparative Ecology Of Narrowly Sympatric Horned Lizards Under Variable Climatic Conditions, Kevin V. Young
Comparative Ecology Of Narrowly Sympatric Horned Lizards Under Variable Climatic Conditions, Kevin V. Young
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
We studied the Flat-tailed Horned Lizard, Phrynosoma mcallii, and the Sonoran Horned Lizard, P. goodei, in an area of narrow sympatry near Yuma, Arizona, and found they overlapped broadly in use of available food resources, body size, and growth rates. We compared diet (Chapter 2), growth and reproduction (Chapter 3), and survivorship (Chapter 4) of P. mcallii and P. goodei during two years of drought followed by a year of higher-than-average rainfall. We predicted that P. mcallii would be more tolerant of drought conditions than its congener, since P. mcalliiis found only in an extremely arid region while …
Growth And Age At Reproductive Maturity Of The Carolina Pigmy Rattlesnake, Sistrurus M. Miliarius (Reptilia: Serpentes), Kevin Robert Messenger
Growth And Age At Reproductive Maturity Of The Carolina Pigmy Rattlesnake, Sistrurus M. Miliarius (Reptilia: Serpentes), Kevin Robert Messenger
Theses, Dissertations and Capstones
Growth and age at reproductive maturity are life history attributes that play an important role in the development of proper management strategies. The Carolina Pigmy Rattlesnake, Sistrurus m. miliarius, is one of two dwarf rattlesnake species. The subspecies ranges from eastern NC to nearly the southern tip of SC and into the northeastern portion of GA. In NC, where the species’ status is of Special Concern, fragmentation and land development have destroyed most of its historic range. Its small size also makes it highly susceptible to predation. In some parts of the range, commercial collection is another pressure the species …