Results 271 to 280 of about 703,473 (291)
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The Quarterly Review of Biology, 1977
This review considers the behavioral, ecological, and reproductive characteristics of mammals exhibiting monogamy, i.e., mating exclusivity. From a discussion of the life histories of selected species of monogamous primates, carnivores, rodents and ungulates, several trends emerge. Two forms of monogamy occur, Type I, facultative, and Type II, obligate.
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This review considers the behavioral, ecological, and reproductive characteristics of mammals exhibiting monogamy, i.e., mating exclusivity. From a discussion of the life histories of selected species of monogamous primates, carnivores, rodents and ungulates, several trends emerge. Two forms of monogamy occur, Type I, facultative, and Type II, obligate.
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2014
Abstract In comparison to birds, magnetoreception in mammals has been understudied. This negligence has historical and methodological causes. We summarize the paradigms that have been applied in the study of magnetoreception in mammals. We also provide an overview of mammalian taxa in which magnetoreception has been studied and indicate potential ...
Erich Pascal Malkemper +3 more
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Abstract In comparison to birds, magnetoreception in mammals has been understudied. This negligence has historical and methodological causes. We summarize the paradigms that have been applied in the study of magnetoreception in mammals. We also provide an overview of mammalian taxa in which magnetoreception has been studied and indicate potential ...
Erich Pascal Malkemper +3 more
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Microbes and Infection, 2000
Microsporidia are small, single-celled, obligately intracellular parasites that have caused significant agricultural losses and interference with biomedical research. Interest in the microsporidia is growing, as these organisms are recognized as agents of opportunistic infections in persons with AIDS and in organ transplant recipients. Microsporidiosis
John A. Shadduck +3 more
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Microsporidia are small, single-celled, obligately intracellular parasites that have caused significant agricultural losses and interference with biomedical research. Interest in the microsporidia is growing, as these organisms are recognized as agents of opportunistic infections in persons with AIDS and in organ transplant recipients. Microsporidiosis
John A. Shadduck +3 more
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Mesozoic Mammals and the Polyphyletic Origin of Mammals
Evolution, 1959This is, in one way, a poor time to review the iViesozoic mammals and the origin of mammals. Discoveries and studies announced but not yet published fully, if at all, are extraordinarily rich and important. They include: late Cretaceous mammals from Wyoming (McKenna and associates at the University of California) ; Triassic mammals or very advanced ...
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Mammals and mammal-like robots
2018Mammals are warm-blooded tetrapod vertebrates that evolved from reptilian ancestors during the late Triassic period around 225 million years ago. This chapter focuses on some of the most distinctive mammalian characteristics and on integrated robotic systems that seek to capture these capabilities in biomimetic artifacts.
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ACS Synthetic Biology, 2014
Mammalian synthetic biology represents a vibrant and growing technical discipline. As this nascent field matures, technologies for engineering sophisticated mammalian cell functions are enabling the development of novel therapies that address unmet medical needs. These transformative capabilities are likely to impact clinical practice in ways that have
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Mammalian synthetic biology represents a vibrant and growing technical discipline. As this nascent field matures, technologies for engineering sophisticated mammalian cell functions are enabling the development of novel therapies that address unmet medical needs. These transformative capabilities are likely to impact clinical practice in ways that have
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The Quarterly Review of Biology, 1960
Melanocytes may be regarded as unicellular, pigment-secreting glands, largely though not entirely confined to the epidermis, of which they are a constant though often un-recognized cellular component. Their numerical incidence, and their branching form, with numerous dichotomizing processes, are such as to form a reticular system within the epidermis ...
Billingham, R E, Silvers, W K
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Melanocytes may be regarded as unicellular, pigment-secreting glands, largely though not entirely confined to the epidermis, of which they are a constant though often un-recognized cellular component. Their numerical incidence, and their branching form, with numerous dichotomizing processes, are such as to form a reticular system within the epidermis ...
Billingham, R E, Silvers, W K
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Genetica, 1959
Eighteen new cases of colour mosaics are described. Previous reports of mosaics are collocated and briefly discussed. Various mechanisms are described which may engender three types of mosaicism. These are the (1) somatic, (2) the soma-gonadic and (3) the gonadic.
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Eighteen new cases of colour mosaics are described. Previous reports of mosaics are collocated and briefly discussed. Various mechanisms are described which may engender three types of mosaicism. These are the (1) somatic, (2) the soma-gonadic and (3) the gonadic.
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The Bulletin of Mathematical Biophysics, 1948
By considering the general energy balance between the energy of muscular contraction in the extremities, kinetic energy imparted to the animal and the energy lost in the lifting of the center of gravity and in the possible muscular viscosity, an expression is derived for the speed of an animal in terms of the constant which determine its shape and ...
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By considering the general energy balance between the energy of muscular contraction in the extremities, kinetic energy imparted to the animal and the energy lost in the lifting of the center of gravity and in the possible muscular viscosity, an expression is derived for the speed of an animal in terms of the constant which determine its shape and ...
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Philosophical Psychology, 2006
Many traditional attempts to show that nonhuman animals are deserving of moral consideration have taken the form of an argument by analogy. However, arguments of this kind have had notable weaknesses and, in particular, have not been able to convince two kinds of skeptics.
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Many traditional attempts to show that nonhuman animals are deserving of moral consideration have taken the form of an argument by analogy. However, arguments of this kind have had notable weaknesses and, in particular, have not been able to convince two kinds of skeptics.
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