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Burrow Pattern in Rodents is a well-thought-out and organized collection of research. This particular field of study needs patience and acute interest. Scholars in this field throughout the globe have tried to focus on the morphology, ecology, physiology, behaviour and biodiversity of rodents. Studying the rodents of India or outside India is very difficult and requires a multidisciplinary approach. Rodents are defined as gnawing mammals of an order that includes rats, mice, squirrel, hamsters, porcupines, and their relatives, distinguished by strong, constantly growing incisors and no canine teeth.Rodents are the largest group of mammals, constituting almost half the class Mammalia's approximately 4,660 species. They are indigenous to every land area except Antarctica, New Zealand, and a few Arctic and other oceanic islands, although some species have been introduced to those places through their association with humans. The impact of these species upon human populations ranges from inconvenient to deadly. Burrowing (fossorial) mammals (especially rodents) construct or visit existing burrow systems regularly or temporarily for shelter but search for their food mainly above ground. The shelter function of the underground ecotope has two components: protection from predators and protection from environmental fluctuation or extremes predominating above the ground. Protection is particularly important in periods of enhanced vulnerability: during resting and sleeping, hibernation, aestivation, or breeding. Burrow inhabitants are deprived of most sensory cues available above ground, and face low food supply, high energetic costs of digging and some stressful micro-environmental conditions as high humidity, low gas ventilation, hypoxic and hypercapnic conditions.A number of books on the topic of rodents have been published, such as The Mouse in Science, Biomethodology of the Rat, Biomethodology of the Guineapig, Hamsters in Research Institutions, and Infectious Diseases of Mice and Rats. However, these books are mainly focused on laboratory animals. This work, on the other hand, focuses on rodents in natural conditions, which is a fascinating aspect of rodent biology. Agriculture, being biological in nature, is vulnerable to several external factors. Agricultural fields serve as a highly productive rodent habitat and crops such as sugarcane, rice, wheat, groundnut and fodder serve as an ideal habitat for rodent pests. Similarly, threshing yards located near crop fields also act as an excellent source of food and shelter for rodents.Burrow systems vary greatly among rodent species and even within a species, depending on soil type, compaction, and depth; water table levels; aspect and slope; vegetation type and density; latitude, etc. In the Indian scenario, there is considerable variation in various types of burrow patterns due to the different types of soil, food structure and climatic situations. The authors have also tried to accumulate information on burrow systems in other developing and developed countries. So, this work will help the reader to understand species-specific burrow structures and their physiological conditions. The discussion on this particular topic will help the reader understand the life of various types of rodents not only in India but in other developing and developed countries also.
"Burrow Pattern in Rodents is a well-thought-out and organized collection of research. This particular field of study needs patience and acute interest. Scholars in this field throughout the globe have tried to focus on the morphology, ecology, physiology, behaviour and biodiversity of rodents. Studying the rodents of India or outside India is very difficult and requires a multidisciplinary approach. Rodents are defined as gnawing mammals of an order that includes rats, mice, squirrel, hamsters, porcupines, and their relatives, distinguished by strong, constantly growing incisors and no canine teeth. Rodents are the largest group of mammals, constituting almost half the class Mammalia's approximately 4,660 species. They are indigenous to every land area except Antarctica, New Zealand, and a few Arctic and other oceanic islands, although some species have been introduced to those places through their association with humans. The impact of these species upon human populations ranges from inconvenient to deadly. Burrowing (fossorial) mammals (especially rodents) construct or visit existing burrow systems regularly or temporarily for shelter but search for their food mainly above ground. The shelter function of the underground ecotope has two components: protection from predators and protection from environmental fluctuation or extremes predominating above the ground. Protection is particularly important in periods of enhanced vulnerability: during resting and sleeping, hibernation, aestivation, or breeding. Burrow inhabitants are deprived of most sensory cues available above ground, and face low food supply, high energetic costs of digging and some stressful micro-environmental conditions as high humidity, low gas ventilation, hypoxic and hypercapnic conditions. A number of books on the topic of rodents have been published, such as The Mouse in Science, Biomethodology of the Rat, Biomethodology of the Guineapig, Hamsters in Research Institutions, and Infectious Diseases of Mice and Rats. However, these books are mainly focused on laboratory animals. This work, on the other hand, focuses on rodents in natural conditions, which is a fascinating aspect of rodent biology. Agriculture, being biological in nature, is vulnerable to several external factors. Agricultural fields serve as a highly productive rodent habitat and crops such as sugarcane, rice, wheat, groundnut and fodder serve as an ideal habitat for rodent pests. Similarly, threshing yards located near crop fields also act as an excellent source of food and shelter for rodents. Burrow systems vary greatly among rodent species and even within a species, depending on soil type, compaction, and depth; water table levels; aspect and slope; vegetation type and density; latitude, etc. In the Indian scenario, there is considerable variation in various types of burrow patterns due to the different types of soil, food structure and climatic situations. The authors have also tried to accumulate information on burrow systems in other developing and developed countries. So, this work will help the reader to understand species-specific burrow structures and their physiological conditions. The discussion on this particular topic will help the reader understand the life of various types of rodents not only in India but in other developing and developed countries also"--
Subterranean Rodents presents achievements from recent years of research on these rodents, divided into five sections: ecophysiology; sensory ecology; life histories, behavioural ecology and demography; environmental and economical impact; molecular ecology and evolution. It is a must for all researchers working in this field and will be of interest to zoologists, physiologists, morphologists, ecologists, and evolutionary biologists.
Many mammals like to dig in the dirt, but few call it home. Those that do, such as mole-rats, zokors, and tuco-tucos, have developed novel adaptations to their subterranean life, including bones and muscles modified for efficient digging and ways to "see" underground without using their eyes. These unusual traits, adopted independently by unrelated groups around the world, also make subterranean rodents fascinating subjects for biologists. Life Underground provides the first comprehensive review of the biology of subterranean rodents. Arranged by topic rather than by taxon to facilitate cross-species comparisons, chapters cover such subjects as morphology, physiology, social behavior, genetic variation, and evolutionary diversification. Two main questions run throughout the book. First, to what extent has subterranean life shaped the biology of these animals, leading to similar adaptations among otherwise dissimilar species? Second, how have the distinct evolutionary histories of these groups led to different solutions to the challenges posed by life underground?
As night falls, a tiny, furry creature with enormous eyes emerges from a hole beneath a scrubby desert bush. Always alert to a sudden attack by one of its many predators, the little kangaroo rat searches for food. It munches on tasty grass seeds until it is full, and then scurries back to its safe, underground home with its cheek pouches stuffed with food it will eat later. Packed with information perfectly suited to the abilities and interests of its young audience, this colorful, fact-filled volume gives readers a chance not only to learn, but also to develop their powers of observation and critical thinking. Activities, such as describing the kangaroo rat to a friend and discussing critical thinking questions, give readers a chance to gain insights beyond the facts and figures. From taking a peek inside the kangaroo rat’s underground home, to learning how the tiny creature can jump many feet in the air to avoid predators such as coyotes and snakes, this book makes learning about the habits and habitat of these nocturnal desert animals an enjoyable, satisfying experience.
The Evolution of Desert Adaptations. 190 A Comparison of Behavior Patterns. . 196 A Comparison of Behavior Patterns in: Meriones, Gerbillus and Perognathus . . . . . 210 Spacing and Communication 217 Acknowledgements 221 References . . . . . . . . 221 XI. Activity Patterns ofa Desert Rodent by N. R. FRENCH 225 Introduction . . . . . . . . . . . . . . . 225 Methods. . . . . . . . . . . . . . . . . 226 The Microdosimeter and the Index of Activity. 227 Variation in Activity. . . . . . . . . . . . 229 Climatological Variables and Animal Activity . 229 Analysis . 232 Discussion 237 Summary 238 References 239 XII. Patterns of Food, Space and Diversity by M. L. ROSENZWEIG, BARBARA SMIGEL & A. KRAFT. 241 Introduction . . . . . . . . . . . 241 Resource Allocation by Seed Selection 242 Habitat Selection in Space . . . . . 251 The Pattern of Local Species Diversity 260 Acknowledgements 266 References . . . . . . . . . . . . 266 XIII. Desert Coloration in Rodents by D. L. HARRISON. 269 Introduction . . . 269 Desert Coloration . 269 Acknowledgements 275 References . . . . 275 XIV. The Biology of so:me Desert-Dwelling Ground Squ- rels by A. C. HA WBECKER . 277 Introduction . 277 Reproduction. . . . . . 279 Food Habits . . . . . . 288 Population Characteristics 294 Habitat Factors . 297 References . . . . . . . 302 IX xv. Reproductive Biology of North ADlerican Desert Rodents by H. D. SMITH & C. D. JORGENSEN. 305 Introduction . . . . . . . . . . . . . 305 Reproductive Biology: Species Summaries. . . 308 References . . . . . . . . . . . . . . . . 328 XVI. Rodent Faunas and EnvironDlental Changes in the Pleistocene of Israel by E. TCHERNOV . . . . . . . 331 Introduction . . . . . . . . . . . . . . . . . . . 331 The Main Biogeographical Changes in the Near-East since the Miocene . . . . . . . . . . . . . . . . . . . 331 The Composition of the Rodents Faunas in the Pleistocene of Israel . . . . . . . . . . . . . . . . . . . . . 336 The Main Ecological Changes in the Quarternary of Israel . . . . . . . . . . . . . . . . . . . . . .
Rodent Societies synthesizes and integrates the current state of knowledge about the social behavior of rodents, providing ecological and evolutionary contexts for understanding their societies and highlighting emerging conservation and management strategies to preserve them. It begins with a summary of the evolution, phylogeny, and biogeography of social and nonsocial rodents, providing a historical basis for comparative analyses. Subsequent sections focus on group-living rodents and characterize their reproductive behaviors, life histories and population ecology, genetics, neuroendocrine mechanisms, behavioral development, cognitive processes, communication mechanisms, cooperative and uncooperative behaviors, antipredator strategies, comparative socioecology, diseases, and conservation. Using the highly diverse and well-studied Rodentia as model systems to integrate a variety of research approaches and evolutionary theory into a unifying framework, Rodent Societies will appeal to a wide range of disciplines, both as a compendium of current research and as a stimulus for future collaborative and interdisciplinary investigations.