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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Age, Growth, And Simulation Modeling To Characterize Fish Populations At Two Reservoirs In South-Central Kansas, Brian Serpan
Age, Growth, And Simulation Modeling To Characterize Fish Populations At Two Reservoirs In South-Central Kansas, Brian Serpan
Master's Theses
Several fish populations in Kansas are heavily exploited. To obtain insight into the response of fish populations to management actions, fisheries biologists must obtain as much information as possible with limited resources. To address these challenges, biologists often use age and growth information to understand the age structure of the populations, estimate recruitment and mortality, and gain insight into environmental and genetic factors influencing growth. In addition, age and growth data are used to generate yield-per-recruit models, which allow biologists to extrapolate population trends and make broad predictions about population responses to different management actions. Cheney and El Dorado reservoirs …
Neuropsychological Outcomes Of Children With Craniosynostosis, Marykathryn Strahle
Neuropsychological Outcomes Of Children With Craniosynostosis, Marykathryn Strahle
Honors Theses
Craniosynostosis is the premature fusion of one or more cranial sutures. Previous research suggests that craniosynostosis is related to cognitive deficits, impairments, and delay, and that these impairments might be related to the age of surgical intervention or the location and severity of suture fusion (Kapp-Simon, 1998). The current research sought to further investigate such relationships using a sample of 177 pediatric patients from the University of Michigan Neuropsychology Clinic. The data included 56 intelligence quotient (IQ) scores from various neuropsychological tests [Bayley Scales of Infant Development (BSID), Wechsler Preschool and Primary Scale of Intelligence (WPPSI), and Wechsler Intelligence Scale …
Plasticity In Female Mate Choosiness: A Result Of Variation In Perceived Predation Risk And The Interaction Of Female Age And Male Density, Ashley Atwell
School of Biological Sciences: Dissertations, Theses, and Student Research
In many species, female mate choices can be a strong source of sexual selection. Females often prefer a certain male phenotype, and this can be due to benefits females gain from mating with preferred males. However, such benefits can sometimes be outweighed by the cost of searching for a preferred male. These costs and benefits often change concomitantly with changes in environmental (e.g., predator abundance and conspecific density) and internal factors (e.g., female age). Thus, female mate choosiness (the degree to which preferences for certain males are expressed) should often be plastic. Plasticity in female mate choosiness may be complicated …
Phenology Of Annulus Formation In Walleye And Smallmouth Bass Otoliths, Brianna J. Graff, Daniel J. Dembkowski, Melissa R. Wuellner
Phenology Of Annulus Formation In Walleye And Smallmouth Bass Otoliths, Brianna J. Graff, Daniel J. Dembkowski, Melissa R. Wuellner
Natural Resource Management Faculty Publications
Walleye Sander vitreus and smallmouth bass Micropterus dolomieu were sampled monthly (May-October) from Lake Sharpe, South Dakota during 2006 and 2007 to estimate the timing of otolith annulus formation and to evaluate the influence of fish age, sex, and sample location (walleye only) on the timing and detection of annulus formation. Timing of annulus formation was evaluated using marginal increment analysis. Walleye samples were stratified by age, sex, and sample location (i.e., upper and lower Lake Sharpe) and smallmouth bass samples were stratified by age and sex. Monthly mean marginal increment measurements for both species generally increased from May to …
An Investigation Of Epigenetic Contributions To Inter-Animal And Age Dependent Variation In The Bovine Innate Immune Response., Benjamin Green
An Investigation Of Epigenetic Contributions To Inter-Animal And Age Dependent Variation In The Bovine Innate Immune Response., Benjamin Green
Graduate College Dissertations and Theses
Mastitis represents a major issue within the dairy industry responsible for economic loss via decreased animal productivity and associated veterinary costs. Currently, there is a push to identify a phenotypic innate immune response that will yield dairy cows with an enhanced resistance to mastitis. Bovine dermal fibroblasts were used as a cell model to measure the response of individuals to Gram-negative bacterial stimuli through the TLR4 signaling pathway. Fibroblast cultures were isolated from 15 dairy heifers at 5, 11, and 16 months of age in order to determine the variability in responsiveness to LPS as well as to monitor the …
The Body Size, Age Structure, And Growth Of Bosc's Fringe-Toed Lizard, Acanthodactylus Boskianus (Daudin, 1802), Nazan Üzüm, Çeti̇n Ilgaz, Yusuf Kumlutaş, Çi̇çek Gümüş, Azi̇z Avci
The Body Size, Age Structure, And Growth Of Bosc's Fringe-Toed Lizard, Acanthodactylus Boskianus (Daudin, 1802), Nazan Üzüm, Çeti̇n Ilgaz, Yusuf Kumlutaş, Çi̇çek Gümüş, Azi̇z Avci
Turkish Journal of Zoology
Using skeletochronology, the age structure of a breeding population portion of Acanthodactylus boskianus (Daudin, 1802) from the southeast of Turkey was studied for the first time. A total of 21 preserved (9 males, 8 females, and 4 juveniles) specimens were used in this study. According to the analysis of the age structure based on counting lines of arrested growth, ages ranged from 6 to 9 years (mean: 7.44 ± 0.34 years) in males and from 5 to 7 years (mean: 6.13 ± 0.30 years) in females. Juveniles were from 3 to 4 years old. Age at maturity was estimated to …