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The Texas Quail Index: Evaluating Predictors of Quail Abundance Using Citizen ScienceReyna, Kelly Shane 15 May 2009 (has links)
Annual abundance of northern bobwhite (Colinus virginianus) and scaled quail
(Callipepla squamata) fluctuates drastically in Texas, which complicates a quail
manager’s ability to forecast quail abundance for the ensuing hunting season. The Texas
Quail Index (TQI) was a 5-year citizen-science project that evaluated several indices of
quail abundance and habitat parameters as predictors of quail abundance during the
ensuing fall. I found that spring cock-call counts explained 41% of the variation in fall
covey-call counts for all study sites in year 1–4, and 89% of the variation in year 5.
Further investigation revealed that year 5 was a drought year and had a significantly
lower percentage of juveniles in the hunter’s bag. These results suggest that during
drought years, fall quail abundance is more predictable than during non-drought years
and that low breeding success may be the reason. If these data are correct, quail
managers should have a better ability to predict the declines of their fall quail abundance
in the dry years.
The TQI relied on citizen scientists (cooperators) to collect data. Since most
(66.1%) cooperators dropped out of the program, and <8% of all data sets were complete, I surveyed the cooperators by mail to determine the rate and cause of
cooperator decline and to identify characteristics of a reliable cooperator (i.e., one that
did not drop out of the study). I found that cooperator participation declined earlier each
year for year 1–4, and that year 5 demonstrated a steady trend with the least amount of
cooperators. Most respondents who dropped out (61.5%) reported their motive for
leaving was that it was too time consuming. I found no difference in mean cooperator
demographics, satisfaction, or landownership goals between those respondents who
dropped out and those that did not. However, 38% of those who dropped out were not
completely satisfied with communication from TQI coordinators compared to only 15%
of those who did not drop out, indicating that communication, or perhaps overall
volunteer management, might have been improved. Future studies should maintain
better communication with participants, require less time, and provide an incentive for
retention.
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Some nutrient requirements of Japanese quail (Coturnix Coturnix Japonica)Donaldson, Karen Ann, 1942- January 1967 (has links)
No description available.
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The genetic control of neural crest development in early craniofacial morphogenesisMcKeown, Sonja Jane Unknown Date (has links) (PDF)
Craniofacial development requires orchestrated and complex interactions between multiple tissues of different origins. Cranial neural crest stem cells migrate from the dorsal neural tube into the frontonasal process and branchial arches where they ultimately form most of the skeletal structures and connective tissue of the craniofacial complex, as well as contributing neurons and glia to cranial ganglia. The timing and mechanism by which cranial neural crest cells progressively differentiate from multipotent stem cells into lineage restricted and terminally differentiating cell types has previously not been investigated. In addition, there are many deficits in our knowledge of the molecular controls regulating early development of neural crest cells within the branchial arches. Spatial and temporal changes in migratory and lineage potential in neural crest populations contributing to the developing first branchial arch and trigeminal ganglia were examined by back-transplanting cells from quail into chick embryos. Neural crest cells that had barely entered the first branchial arch had largely lost both the ability to localise to the trigeminal ganglia and neurogenic differentiation capacity but were still capable of long-distance migration. However, after a further 12 hours residence in the branchial arch, neural crest cells had lost long-distance migratory ability.
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An introductory population study of the Gecko, Hoplodactylus pacificus, on Quail Island, in the Lyttleton Harbour.McIvor, Ian Richard January 1970 (has links)
The common gecko, Hoplodactylus pacificus (Gray, in McCann (1955) ), is widely distributed throughout New Zealand. As yet no specific ecological study of this lizard has been published, though Sharell (1966) mentions habitat preferences and hibernation behaviour, and Whitaker (1968) has published some data for H. pacificus on Poor Knights Islands (mentioned in this report) and describes their observed foraging behaviour. In this study, carried out from late March through to May 1970, I have recorded information on snout-vent lengths, weights, individual movements, and habitat preference, and have also estimated the population density. This particular lizard does not seem to be active during the Autumn months and no observations of food preferences and foraging behaviour were able to be made.
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Elevated Progesterone In Yolk As a Moderator of Prenatal and Postnatal Auditory Learning in Bobwhite QuailHerrington, Joshua A 30 June 2014 (has links)
Recent studies have established that yolk hormones of maternal origin have significant effects on the physiology and behavior of offspring in birds. Herrington (2012) demonstrated that an elevation of progesterone in yolk elevates emotional reactivity in bobwhite quail neonates. Chicks that hatched from progesterone treated eggs displayed increased latency in tonic immobility and did not emerge as quickly from a covered location into an open field compared to control groups. For the present study, three experimental groups were formed: chicks hatched from eggs with artificially elevated progesterone (P), chicks hatched from an oil-vehicle control group (V), and chicks hatched from a non-manipulated control group (C). Experiment 1 examined levels of progesterone with High Performance Liquid Chromatography/tandem Mass Spectroscopy (HPLC/MS) from prenatal day 1 to prenatal day 17 in bobwhite quail egg yolk. In Experiment 2, bobwhite quail embryos were passively exposed to an individual maternal assembly call for 24 hours prior to hatching. Chicks were then tested individually for their preference between the familiarized call and a novel call at 24 and 48 hours following hatching. For Experiment 3, newly hatched chicks were exposed to an individual maternal assembly call for 24-hrs. Chicks were then tested for their preference for the familiarized call at 24 and 48-hrs after hatch. Results of Experiment 1 showed that yolk progesterone levels were significantly elevated in treated eggs and were present in the egg yolk longer into prenatal development than the two control groups. Results from Experiment 2 indicated that chicks from the P group failed to demonstrate a preference for the familiar bobwhite maternal assembly call at 24 or 48-hrs after hatch following 24-hrs of prenatal exposure. In contrast, chicks from the C and V groups demonstrated a significant preference for the familiarized call. In Experiment 3, chicks from the P group showed an enhanced preference for the familiarized bobwhite maternal call compared to chicks from the C and V groups at 24 and 48-hrs after hatch. The results of these experiments suggest that elevated maternal yolk hormone levels in pre-incubated bobwhite quail eggs can influence auditory perceptual learning in embryos and neonates.
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Evaluation of the effects of selection for increased body weight and increased yield on growth and development of poultryReddish, John Mark 04 February 2004 (has links)
No description available.
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The bobwhite quail with suggestions for its management in OhioBaumgartner, Luther L. January 1936 (has links)
No description available.
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Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese QuailDonley, Sarah 21 October 2011 (has links)
No description available.
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Response to divergent selection for 4-week body weight, egg production and total plasma phosphorus in Japanese quail /Lambio, Angel Laylo January 1981 (has links)
No description available.
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The Influence of Enhanced Tactile and Vestibular Sensory Stimulation on Subsequent Auditory and Visual Responsiveness: A Matter of TimingHoneycutt, Hunter Gibson 15 July 2002 (has links)
The fact that sensory modalities do not become functional at the same time raises the question of how sensory systems and their particular experiential histories might influence one another. Few studies have addressed how modified stimulation to earlier-emerging modalities might influence the functioning of relatively later-developing modalities. Previous findings have shown that enhanced prenatal tactile and vestibular (proximal) stimulation extended and delayed normal patterns of auditory and visual responsiveness to species-typical maternal cues in bobwhite quail respectively. Although these results were attributed to the increased amount of sensory stimulation, these results may be a function of when prenatal augmented proximal exposure took place. To address this issue the present study exposed groups of bobwhite quail embryos to equivalent amounts of augmented tactile and vestibular stimulation either at a time when a later-emerging modality (auditory or visual) was beginning to functionally emerge or when it had already functionally emerged. Results indicate that differences in the timing of augmented tactile and vestibular stimulation led to differences in subsequent auditory and visual responsiveness. Embryos were unable to learn a maternal call prior to hatching when enhanced proximal stimulation coincided with auditory functional emergence implicating a deficit in auditory functioning, but did learn a maternal call when enhanced proximal stimulation occurred after auditory functional emergence. Augmented proximal stimulation that coincided with visual functional emergence did not appear to influence normal visual responsiveness, but when proximal stimulation occurred after visual emergence, chicks displayed an accelerated approach response to species-typical visual cues. These findings support the view that the timing of enhanced stimulation to earlier-emerging modalities is important, and have meaningful implications for intersensory theory and research. / Ph. D.
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