Download or read book Sun Compass Orientation in Juvenile Green Sea Turtles Chelonia Mydas written by Cody Robert Mott and published by . This book was released on 2010 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies show that sea turtles use both magnetic and visual cues to successfully orient. Juvenile green sea turtles from the near shore reefs of Palm Beach County, Florida were brought to the lab to determine whether the sun could serve as a visual orientation cue. When tethered during the day in a large outdoor tank west of the ocean, the turtles oriented east to northeast. To determine whether the sun's position was used to maintain their heading, I altered the turtles' perception of time by entraining them to a light cycle advanced by 7 h relative to the natural cycle. When tested afterward in the same outdoor tank the turtles oriented northwest, the predicted direction after compensating for the sun's movement over 7 h across the sky. Orientation was unchanged when the turtles bore magnets that negated the use of magnetic cues. These results are consistent with the hypothesis that the turtles used the sun for orientation.
Download or read book The Biology of Sea Turtles written by Jeanette Wyneken and published by CRC Press. This book was released on 2013-03-25 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first volume of The Biology of Sea Turtles was published in 1997, the field has grown and matured in ways few of the authors would have predicted—particularly in the areas of physiology, behavior, genetics, and health. Volume III presents timely coverage of emerging areas as well as the integration of approaches and information that did not exist even a decade ago. The book assembles the foremost experts in each topic to provide the most up-to-date and comprehensive book on sea turtles available today. New areas covered include in vivo imaging of structure, spatial distributions of marine turtles at sea, epibiosis, imprinting, parasitology, and climatic effects. Life history is explored in three chapters covering age determination, predator-prey interactions, and mortality from bycatch. The Biology of Sea Turtles, Volume III will inspire scientists and students to explore and expand their understanding of these intriguing animals. The book provides clear baseline summaries, thoughtful syntheses, and effective presentation of the most fundamental topics spanning form and function, health, distributions, behavior, genetics, evolution, and ecology. Its scope and depth make it the definitive go-to reference in the field.
Download or read book Proceedings of the Thirty first Annual Symposium on Sea Turtle Biology and Conservation written by and published by . This book was released on 2012 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Animalkind written by Ingrid Newkirk and published by Simon & Schuster. This book was released on 2021-01-19 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The founder and president of PETA, Ingrid Newkirk, and bestselling author Gene Stone explore the wonders of animal life with “admiration and empathy” (The New York Times Book Review) and offer tools for living more kindly toward them. In the last few decades, a wealth of new information has emerged about who animals are: astounding beings with intelligence, emotions, intricate communications networks, and myriad abilities. In Animalkind, Ingrid Newkirk and Gene Stone present these findings in a concise and awe-inspiring way, detailing a range of surprising discoveries, like that geese fall in love and stay with a partner for life, that fish “sing” underwater, and that elephants use their trunks to send subsonic signals, alerting other herds to danger miles away. Newkirk and Stone pair their tour through the astounding lives of animals with a guide to the exciting new tools that allow humans to avoid using or abusing animals as we once did. Whether it’s medicine, product testing, entertainment, clothing, or food, there are now better options to all the uses animals once served in human life. We can substitute warmer, lighter faux fleece for wool, choose vegan versions of everything from shrimp to marshmallows, reap the benefits of animal-free medical research, and scrap captive orca exhibits and elephant rides for virtual reality and animatronics. Animalkind provides a fascinating look at why our fellow living beings deserve our respect, and lays out the steps everyone can take to put this new understanding into action.
Download or read book Journal of Experimental Biology written by and published by . This book was released on 2003 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of the Biological Data on the Green Turtle Chelonia Mydas Linnaeus 1758 written by Harold F. Hirth and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vertebrate Biology written by Donald W. Linzey and published by JHU Press. This book was released on 2012-02-13 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arranged logically to follow the typical course format, Vertebrate Biology leaves students with a full understanding of the unique structure, function, and living patterns of the subphylum that includes our own species.
Download or read book Perspectives on Animal Behavior written by Judith Goodenough and published by John Wiley & Sons. This book was released on 2009-09-22 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: PERSPECTIVES ON ANIMAL BEHAVIOR
Download or read book Green Sea Turtles A Nesting Journey written by Rebecca Hirsch and published by Weigl Publishers. This book was released on 2016-08-01 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the seasons change, many animals migrate to new homes. Readers will learn about these fascinating creatures in Nature’s Great Journeys. This series explores the physical features, behaviors, and histories of migratory animals with easy-to-read text and vivid images. This is an AV2 media enhanced book. A unique book code printed on page 2 unlocks multimedia content. This book comes alive with video, audio, weblinks, slide shows, activities, quizzes, and much more.
Download or read book Chemosensory Imprinting in Juvenile Green Sea Turtles Chelonia Mydas written by Mark Allen Grassman and published by . This book was released on 1987 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of the Biological Data on the Green Turtle Chelonia Mydas Linnaeus 1758 written by Harold F. Hirth and published by . This book was released on 1997 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sun Compass Orientation During Natal Dispersal in Hatchling Blanding s Turtles Emydoidea Blandingii written by Meredith Anne Schlenner and published by . This book was released on 2015 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Blanding's turtle hatchlings emerge from their natal nests naïve to environmental stimuli and primarily sense visual cues on the horizon as a dispersal target. During a period of hours or days, hatchlings develop a compass mechanism that allows them to maintain a direction of travel, even when the target is not visible. We examined the dispersal directions of Blanding's turtle hatchlings captured during dispersal by translocating them into a circular arena in a field of corn in order to measure their dispersal direction guided by a compass mechanism. To test for use of a sun compass, a magnetic compass, or both, we observed dispersal direction of hatchlings released at the center of the arena. Hatchlings were released in an initial trial, treated with normal (no-shift) or 6-hr clock-shifted photoperiods for 4 to 10 days, and released into the arena for a second trial with magnets (or non-magnetic controls) adhered to their carapaces. We predicted that clock-shifting would reduce dispersal angle 90° and disruption of magneto-reception would disorient hatchlings. All four treatment groups dispersed directionally during first trials (Rayleigh's Z-tests; all p 0.001) and in second trials dispersal angles were unchanged in hatchlings with magnets (Watson's U2; both p 0.50); they were not using a geo-magnetic compass. Hatchlings that were not clock-shifted maintained their initial heading but clock-shifted hatchlings reduced dispersal angle a mean of 111°, not significantly different than the experimental prediction of 90° (Rayleigh's Z = 22.217, p
Download or read book Chelonian Conservation and Biology written by and published by . This book was released on 1993 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology and Migrations of Sea Turtles written by Archie Carr and published by . This book was released on 1960 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Compass Orientation and Magnetoreception in Hatchling Loggerhead Sea Turtles written by William P. Irwin and published by . This book was released on 2004 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of Juvenile Green Turtles Chelonia Mydas at a Temperate Foraging Area in the Northeastern Gulf of Mexico written by Erin McMichael and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: In recent years, scientists have recognized the need to conduct in-water studies to better understand the biology of juvenile sea turtles. Little is known regarding the seasonal abundance of juvenile populations in temperate developmental areas such as those in the Gulf of Mexico. It is likely that the Gulf of Mexico supports a year-round population of juvenile sea turtles.
Download or read book The Sea finding Orientation of the Green Turtle Chelonia Mydas written by David William Ehrenfeld and published by . This book was released on 1966 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
