Download or read book The Behavioral Response of Larval Coastal Giant Salamanders Dicamptodon Tenebrosus to Chemical Stimuli written by Larkin G. Chases and published by . This book was released on 2008 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hands On Chemical Ecology written by Dietland Müller-Schwarze and published by Springer Science & Business Media. This book was released on 2009-08-15 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hands-On Chemical Ecology: Simple Field and Laboratory Exercises, a premiere collection of practical exercises in chemical ecology, offers tools and strategies for understanding this young science. The exercises included use general principles and follow a simple structure. Topics examined include birds, fish, insects, mammals, and plant chemistry among others. Additionally, exercises require accessible materials, ensuring that each can be easily modified and completed anywhere in the world with locally existing instruments. This text will be of value to undergraduate and graduates students and high school biology teachers.
Download or read book Movement and Demography of Larval Coastal Giant Salamanders Dicamptodon Tenebrosus in Streams with Culverts in the Oregon Coast Range written by Jina P. Sagar and published by . This book was released on 2004 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Barriers to the movement of aquatic organisms can increase the genetic and spatial isolation of populations and may decrease the viability of these regional populations. Focus on culvert passage issues has increased as federal agencies attempt to inventory and replace road-crossing stream culverts that are barriers to the movement of anadromous fish. However, the effect of road-crossing culverts on the movement of other aquatic organisms is not known. The coastal giant salamander (Dicamptodon tenebrosus) is an important component of headwater stream communities and their movement may be affected by culverts in the larval aquatic stage. The objectives of this study were to determine the effect of road-crossing culverts on the movement and survival of larval coastal giant salamanders in the Oregon Coast Range. We conducted a mark-recapture study on larval D. tenebrosus 3rd and 4th order streams to: i) determine culvert use and passage by design type (pipe and arch types) relative to reference stream reaches without culverts; and ii) model larval survival and growth by season, age and culvert presence. We assessed the movement of over 2,000 larval D. tenebrosus in 14 streams and found that larvae were highly sedentary. Mean movement distances did not differ with culvert presence. However, a small portion of larvae (20%) moved sufficient distances to assess culvert passage. Larvae moved less frequently through stream reaches with culverts than stream reaches without culverts, suggesting a barrier effect. There was less upstream movement through pipe culverts than arch culverts. Also, there were lower larval densities in pipe culverts, indicating arch culverts provided more larval habitat. Larval density both inside culverts and in the adjacent stream reaches was associated with the presence of large substrates, which may be important in facilitating larval D. tenebrosus movement through culverts. Stream reaches with culverts were associated with higher levels of fine sediments, however, which may reduce the suitability of near-culvert habitats. Survival estimates indicated high selection pressure early in the larval period. Apparent survival was lower in summer, and for first-year larvae in comparison to second/third-year larvae. Larval survival for both age groups was lower in reaches of stream with culverts although this effect was weak. Culvert effects on movement of coastal giant salamander aquatic larvae indicate they can operate as barriers but their effect on survival remains unclear. Culvert replacements that simulate both the natural stream bed and hydraulic conditions would help provide both habitat and passage opportunities for larval D. tenebrosus.
Download or read book Spatial Ecology Behavior and Habitat Use of Terrestrial Coastal Giant Salamanders Dicamptodon Tenebrosus in the Central Washington Cascades written by Brandon Fessler and published by . This book was released on 2012 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Feeding Ecology of Larvae of the Pacific Giant Salamander Dicamptodon Tenebrosus and Their Role as Top Predator in a Headwater Stream Benthic Community written by Michael S. Parker (Professor of biology) and published by . This book was released on 1992 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response of Salamanders to Chemical Stimuli from Predators in Natural Habitats written by Caleb R. Hickman and published by . This book was released on 2002 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behavioral and Metabolic Responses of the Southern Red backed Salamander Plethodon Serratus to Predatory Stimuli written by Nathan L. Windel and published by . This book was released on 2005 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Olfactory Metamorphosis in the Pacific Giant Salamander Dicamptodon Tenebrosus written by Jeremy T. Stuelpnagel and published by . This book was released on 2004 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Activity Patterns and Escape Behavior of the Slender Salamander Batrachoseps Attenuatus written by Gary R. Meneghin and published by . This book was released on 1977 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Factors Affecting Paedomorphosis in the Pacific Giant Salamander Dicamptodon Tenebrosus written by Stein Coriell and published by . This book was released on 2003 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Ecomorphological Analysis of Locomotion in Larvae and Neotenes of Two Salamander Species written by Ethan Snee and published by . This book was released on 2020 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Morphology is the physical expression of a species’ evolutionary history and adaptation to its environment and as such is tied to ecology. Salamander larvae have historically been separated into "pond-type" and "stream-type" groups based on their morphology, however no studies have been performed quantifying the relationship between morphology and ecology. In this study I utilized in-situ behavioral observations, morphological measurements, and in-lab performance tests of Dicamptodon tenebrosus (stream-type) and Ambystoma gracile (pond-type) to examine the relationship between salamander larval morphology and ecology. In the field, behavior was video recorded during nighttime surveys; afterwards animals were captured and limb measurements were taken. Flow resistance was measured in the lab using a flow chamber and water velocity meter. Swim escapes were video recorded in lab trials and analyzed using video analysis software. In the field, aquatic walking was the predominant form of movement observed in D. tenebrosus, constituting 98.1 percent of all movements; by contrast, aquatic walking made up only 65.4 percent of all movements in A. gracile. Aquatic walking was correlated with more robust forelimbs with a smaller length:width ratio. Swimming was correlated with slender forelimbs with a larger length:width ratio. Forelimb ratio, hindlimb ratio, and caudal fin area were all significantly different between species. Of the fourteen muscles measured, seven were significantly heavier in relative mass in D. tenebrosus. Specifically, muscles that are used in moving the animals forward or closer to the substrate. Dicamptodon tenebrosus were significantly more adept at resisting flows than A. gracile. There was no significant difference in mean swim escape velocities between A. gracile and D. tenebrosus. However, there was a significant difference in variability of swim escape, with D. tenebrosus more variable. These results support the hypothesis that the salamander larval morphotypes are connected to their ecology by behavior and performance. The larval types are not just morphotypes, they are ecomorphotypes.
Download or read book Threat specific Behavioral Responses by Foraging Allegheny Mountain Dusky Salamanders Desmognathus Ochrophaeus to Chemical Stimuli Associated with Predation written by Elyse C. Johnson and published by . This book was released on 2013 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Strategy for the Coastal Giant Salamander Dicamptodon Tenebrosus in Canada written by and published by . This book was released on 2017 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Canadian distribution of this salamander is restricted to the Chilliwack drainage system in southwestern British Columbia, where it occurs mainly in cool, clear mountain streams and surrounding riparian forest. Major threats include habitat loss, degradation and fragmentation due to forest harvest, road building, and encroaching residential development. These threats may be exacerbated by droughts and flooding events that are predicted to increase with climate change. Poor dispersal ability, low reproductive rate, late maturity, and long generation time increase the vulnerability of the species"--Reason for designation, p. 5.
Download or read book The Journal of Experimental Biology written by and published by . This book was released on 2007-05 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology and Behavior of Amphibians written by Kentwood D. Wells and published by University of Chicago Press. This book was released on 2010-02-15 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consisting of more than six thousand species, amphibians are more diverse than mammals and are found on every continent save Antarctica. Despite the abundance and diversity of these animals, many aspects of the biology of amphibians remain unstudied or misunderstood. The Ecology and Behavior of Amphibians aims to fill this gap in the literature on this remarkable taxon. It is a celebration of the diversity of amphibian life and the ecological and behavioral adaptations that have made it a successful component of terrestrial and aquatic ecosystems. Synthesizing seventy years of research on amphibian biology, Kentwood D. Wells addresses all major areas of inquiry, including phylogeny, classification, and morphology; aspects of physiological ecology such as water and temperature relations, respiration, metabolism, and energetics; movements and orientation; communication and social behavior; reproduction and parental care; ecology and behavior of amphibian larvae and ecological aspects of metamorphosis; ecological impact of predation on amphibian populations and antipredator defenses; and aspects of amphibian community ecology. With an eye towards modern concerns, The Ecology and Behavior of Amphibians concludes with a chapter devoted to amphibian conservation. An unprecedented scholarly contribution to amphibian biology, this book is eagerly anticipated among specialists.
Download or read book Diamonds in the Marsh written by Barbara Brennessel and published by UPNE. This book was released on 2006 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book-length investigation of a fascinating reptile
Download or read book The Teeth of Non Mammalian Vertebrates written by Barry Berkovitz and published by Academic Press. This book was released on 2016-10-14 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Teeth of Non-Mammalian Vertebrates is the first comprehensive publication devoted to the teeth and dentitions of living fishes, amphibians and reptiles. The book presents a comprehensive survey of the amazing variety of tooth forms among non-mammalian vertebrates, based on descriptions of approximately 400 species belonging to about 160 families. The text is lavishly illustrated with more than 600 high-quality color and monochrome photographs of specimens gathered from top museums and research workers from around the world, supplemented by radiographs and micro-CT images. This stimulating work discusses the functional morphology of feeding, the attachment of teeth, and the relationship of tooth form to function, with each chapter accompanied by a comprehensive, up-to-date reference list. Following the descriptions of the teeth and dentitions in each class, four chapters review current topics with considerable research activity: tooth development; tooth replacement; and the structure, formation and evolution of the dental hard tissues. This timely book, authored by internationally recognized teachers and researchers in the field, also reflects the resurgence of interest in the dentitions of non-mammalian vertebrates as experimental systems to help understand genetic changes in evolution of teeth and jaws. Features more than 600 images, including numerous high-quality photographs from internationally-recognized researchers and world class collections Offers guidance on tooth morphology for classification and evolution of vertebrates Provides detailed coverage of the dentition of all living groups of non-mammalian vertebrates
