Download or read book Effects of Incubation Temperature on the Embryonic Development and Hatching Success of the Western Pond Turtle Emys Marmorata written by Rebecca A. Gordon and published by . This book was released on 2009 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Maternal Effect Incubation Temperature and Gender of Juvenile Growth of Capitve raised Western Pond Turtle Hatchlings Emys Marmorata written by Alexandra Zannie Dallara and published by . This book was released on 2011 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temperature Effects on Development and Phenotype in a Free living Population of Western Pond Turtles Emys Marmorata written by Nicole Elise Christie and published by . This book was released on 2014 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Egg Incubation written by D. Charles Deeming and published by Cambridge University Press. This book was released on 2004-11-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews comprehensively incubation effects on embryonic development in birds and reptiles and presents the first ever synthesis of data from these two vertebrate classes. The book is in three parts. The first deals with the structure, shape and function of eggs. The second examines the effects of the four main parameters on the process of incubation: temperature, water relations, respiratory gas exchange, and turning. The third section deals with early embryonic development and the methods used to investigate and manipulate the embryo. Further chapters deal with aestivation, megapodes and oviparity. International experts in each field have contributed to this extensively referenced volume and it will be of great interest not only to research biologists, but also to bird and reptile breeders, whether in commercial organisations or in zoos.
Download or read book The Effect of Early Incubation Temperature and Late Incubation Conditions on Embryonic Development and Subsequent Broiler Performance written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Six experiments were conducted to evaluate the effects of early and late incubation temperatures and hatching basket ventilation on embryonic development and early broiler performance. Eggs were exposed to a constant incubation air temperature of 37.6 & deg;C (99.7 & deg;F) from E 0-17 in Experiment 1 while Experiments 2-5 employed an incubation temperature profile that had an initial dry bulb set point of 38.1 & deg;C (100.5 & deg;F), which was gradually decreased to 37.2 & deg;C (99.0 & deg;F). Experiment 6 exposed eggs to either an Early Hot treatment (EH) that had a short initial air temperature of 38.9 & deg;C (102 & deg;F) followed by 38.1 & deg;C (100.5 & deg;F) to E 3 or an Early Cool treatment (EC) of 36.9 & deg;C (98.5 & deg;F) to E 3. Experiments 1-4 used an average air temperature of 38.1 & deg;C (100.5 & deg;F) during the late incubation period, while Experiments 5 and 6 added a late temperature treatment of approximately 35 & deg;C (95.0 & deg;F) (LC) in addition to 38.1 & deg;C (100.5 & deg;F; LH). Hatching baskets were modified to create ventilation treatments in order to examine the effect of air flow path on embryonic development and used varyingly throughout Experiments 1-6. Two treatments were designed to restricted air flow through the hatching basket by blocking air flow through either the top half of the basket (TT) or the bottom half of the basket (BT). Other hatching baskets remained unaltered to serve as a control group (CN). Experiments 1-2 included all three types but just the TT and BT treatments were used in Experiment 3. Experiments 4-6 used the TT and CN treatments in addition to the baskets at either low density (LD) or high density (HD). The TT treatment produced chicks with significantly less relative yolk sac in Experiment 1, but differences between ventilation treatments did not occur in other experiments. At E 15 of incubation, embryos from the EC treatment in Experiment 6 exhibited a decreased embryo weight and fluid (yolk and albumen) absorption. The LC treatmen.
Download or read book Mechanistic and Evolutionary Considerations of Temperature dependent Sex Determination in Turtles written by Cory Randal Etchberger and published by . This book was released on 1991 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The effect of incubation temperature on embryonic development in poultry written by M. S. Lilburn and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sexual Differentiation Growth and Hatching Success by Embryonic Painted Turtles Incubated in Wet and Dry Environments at Fluctuating Temperatures written by Gary C. Packard and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Exposure to Time Excess Temperature Histories Typically Experienced at Power Plants on the Hatching Success of Fish Eggs written by J. R. Schubel and published by . This book was released on 1973 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Incubation Temperature on Embryo Development and Fry Size in Five Populations of Gasterosteus Aculeatus written by Alicia S. Barlow and published by . This book was released on 2011 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Periode VI VII 1871 1944 written by and published by . This book was released on 1987 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Temperature on Embryonic Development and Hatching Success of Squid Loligo Vulgaris Reynaudii Eggs written by Ané Oosthuizen and published by . This book was released on 1999 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maternal and Environmental Effects on Hatchling Quality in Washington Western Pond Turtles Actinemys Marmorata written by Melissa Marie Reitz and published by . This book was released on 2011 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hatching Synchrony and Survival in Early Life in the Painted Turtle Chrysemys Picta written by Paul Lawrence Colbert and published by . This book was released on 2006 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synchrony in the timing of births is thought to have evolved as a general predator avoidance strategy. In turtles, synchronous hatching promotes synchronous emergence from the nest and may limit predation by swamping and confusing predators or simply dilute the per capita risk of predation. However, synchronization of hatching in natural nests is complicated by the occurrence of thermal gradients, which promote developmental asynchrony. In the first chapter of the thesis, I examined the potential for hatching synchrony in Chrysemys picta, a species in which the drive to hatch synchronously should be absent because neonates remain in the nest throughout the winter. I also assessed the mechanism by which synchrony occurs and explored potential trade-offs between synchronous hatching and performance. Although hatching synchrony did not occur, underdeveloped embryos attempted to catch-up to more advanced sibs via a mechanism consistent with shortening the incubation period. In addition, a trade-off between hatching synchronously and performance was evident. In the second chapter, I experimentally assessed the influence of accelerated hatching on hatching success, winter survival, and survival during terrestrial migration from the nest. I also examined the effects of incubation temperature on hatching success, and offspring sex and body size (carapace length and hatchling mass) on survival and migration time. Early-hatching individuals did not suffer fitness costs relative to their sibs at any stage considered in this study. Incubation treatment had a significant effect on migration time, but in the opposite direction that we predicted. Incubation temperature did not affect hatching success, and offspring sex did not affect survival when all treatment groups were considered. Incubation treatments significantly influenced offspring body size, which was negatively correlated with migration time, but had no effect on survival during terrestrial migration. Lack of a fitness cost associated with hatching synchrony is consistent with a single, predator avoidance origin for this trait and retention in C. picta via phylogenetic inertia.
Download or read book Changes in Embryonic Development Hatching and Zoeae of Snow Crab with Variation in Incubation Temperature written by Joel Benjamin Webb and published by . This book was released on 2005 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The effect of incubation temperature on duration of embryonic development and morphology, weight and energetic content of post-hatch zoeae was described for snow crab, Chionoecetes opilio, from the eastern Bering Sea held at -1, 0, 1, 3, and 6° C in the laboratory from collection to hatch. The mean incubation time increased with decreasing temperature by 32% (113 d) between 6 and -1° C. Extrusion success of females at 6° C was lower versus 0 or 3° C, but the duration of hatching did not vary significantly with incubation temperature. A one-year cycle of embryo incubation was observed, indicating that switching from one to two-year duration of embryo incubation may occur early in development. The energy content and individual weights of post-hatch zoeae were not significantly affected by temperature, indicating that longer incubation periods may not have an energetic cost. The rostro-dorsal length of zoeae incubated at 6° C was smaller than those from cooler temperatures. Conversely, the length of the 3rd abdominal somite increased significantly with decreasing temperature, perhaps serving as an indicator of incubation temperature in field collected zoeae. The consequences of varying incubation temperature appear on post-hatch zoeae appear to be limited between -1° and 6° C."--Leaf iii.
Download or read book Effects of Egg Incubation Condition on the Post hatching Growth and Performance of the Snapping Turtle Chelydra Serpentina written by and published by . This book was released on 1990 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of incubation temperature on the post-hatching growth and performance capacities of the common snapping turtle, Chelydra serpentina was investigated in the laboratory. Turtle eggs were collected from four sites in New York State and randomly assigned to four incubation temperature treatments to produce males (constant 26[degree]C and downshifted 30-26-30[degree]C) and females (constant 30[degree]C and upshifted 26-30-26[degree]C) under constant and altered temperature regimes. The incubation conditions resulted in 92% males from the constant 26[degree]C group and 93% males from the downshifted group. 100% females resulted from both the constant 30[degree]C group and the upshifted group. Turtles hatching from eggs incubated constantly at 26[degree]C were significantly larger than hatchlings from eggs incubated at a constant 30[degree]C or downshifted. Hatchlings were raised in individual aquaria at 25[degree]C and fed earthworms and fish. After a 9-month growth period, turtles which had been incubated at a constant 30[degree]C gained significantly more mass than did turtles from eggs which had been downshifted or upshifted. There was no extended effect of incubation condition on Post-hatching performance and learning ability as measured by righting and feeding responses. Thus, the mass gain differences seen in this study suggest that physiological differences do result as the consequence of incubation condition. However, these physiological differences are not reflected in normal locomotive or feeding behavior.
Download or read book Egg Incubation written by D. Charles Deeming and published by Cambridge University Press. This book was released on 1991-12-05 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: A recent rapid expansion in our knowledge of embryonic development in birds and reptiles has created a need for a book that comprehensively reviews and synthesizes data relating to incubation effects on the embryonic development of these two vertebrate classes. The contributors to this book aptly deal with these issues in logical parts. The first deals with the structure, shape, and function of eggs. The second examines the effects of the four main parameters, e.g. temperature, water relations, respiratory gas exchange, and turning, on the process of incubation. The third section deals with early embryonic development and the methods used to investigate and manipulate the embryo. Further chapters deal with estivation, megapodes, and oviparity.
