Diseases Of Nematodes: Volume 1

CRC Press
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The present work deals with the diseases of nematodes. Although the term disease implies a pathological condition brought about by an infectious agent, a broader concept is used here.
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Publisher
CRC Press
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Published on
Jan 18, 2018
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Pages
160
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ISBN
9781351088367
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Language
English
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Genres
Science / Life Sciences / Zoology / Entomology
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Content Protection
This content is DRM protected.
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Available on Android devices
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Eligible for Family Library

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This text is an overall view of nematology because I believe the science should be treated as a unified discipline. The differences in the biological habits of nematodes do not justify the separation of plant nematologists and animal nematologists, since the separation is not a reflection of any difIerences inherent to nematodes. Therefore, the book is arranged with a format that in the beginning chapters illustrates the similarities and se quence of development of morphological characters among nematodes regardless of their biological habits. The later chapters illustrate the in tegration of the evolutionary development of the parasitie habit from related free-living forms. Nematology is probably the last major discipline to establish its inde pendence from the parent science of zoology. This natural evolvement of nematology has occurred because of the overwhelming accumulation of sophisticated information and research that reflects the unique relation ships of nematodes to other forms of plant and animal life as weH as their relationships in other facets of the environment. N ematodes are inverte brate animals that, like insects, are unusual in their great numbers and varieties, their smaH size (generally microscopic), their high degree of internal organization, and their virtually ubiquitous distribution. They oc cupy almost every ecological niehe, often causing disease of humans, other animals, and plants. These activities often result in debility, death, or in the impairment and loss of food supply with consequent loss to producers and consumers.
These chapters provide up-to-date information on nematophagous fungi, particularly those of the Orbiliaceae in Ascomycota, whose asexual states produce nematode-trapping devices. The authors consider fungal-nematode interactions, fossil fungi, the biodiversity, ecology and geographical distribution of nematode-trapping fungi, and their potential use in biocontrol of nematodes, all in detail.

Nematode-trapping fungi with adhesive or mechanical hyphal traps are the main focus of this book which begins with an overview of the data on nematode-trapping fungi, including their taxonomy, phylogeny and evolution. Subsequent chapters expand upon the methods and techniques used to study these fascinating fungi. Keys for genera of Arthrobotrys, Drechslerella and Dactylellina, which include all reported species of predatory orbiliaceous fungi are presented and numerous species from these genera are morphologically described and illustrated.

The ecology of nematode-trapping fungi is expertly presented: their occurrence and habitats, their geographical and seasonal distribution and the effects of soil conditions and nematode density on their distribution all feature amongst the relevant themes.

Further chapters examine the use of nematode-trapping fungi in biological control and the authors consider nematicidal activities in detail, exploring the many compounds from fungi that feature in nematicidal activities and of course useful paths for further study on this topic.

This is a highly informative and carefully presented book, providing scientific insight for scholars with an interest in fungi and in biological control of nematodes.

Entomologist Justin O. Schmidt is on a mission. Some say it’s a brave exploration, others shake their heads in disbelief. His goal? To compare the impacts of stinging insects on humans, mainly using himself as the gauge.

In The Sting of the Wild, the colorful Dr. Schmidt takes us on a journey inside the lives of stinging insects, seeing the world through their eyes as well as his own. He explains how and why they attack and reveals the powerful punch they can deliver with a small venom gland and a "sting," the name for the apparatus that delivers the venom. We learn which insects are the worst to encounter and why some are barely worth considering.

The Sting of the Wild includes the complete Schmidt Sting Pain Index, published here for the first time. In addition to a numerical ranking of the agony of each of the eighty-three stings he’s sampled so far (from below 1 to an excruciatingly painful 4), Schmidt describes them in prose worthy of a professional wine critic: "Looks deceive. Rich and full-bodied in appearance, but flavorless" and "Pure, intense, brilliant pain. Like walking over flaming charcoal with a three-inch nail embedded in your heel."

Schmidt explains that, for some insects, stinging is used for hunting: small wasps, for example, can paralyze huge caterpillars and then lay their eggs inside so that their larvae can feast within. Others are used to kill competing insects, even members of their own species. Humans usually experience stings as defensive maneuvers used by insects to protect their nest mates.

With colorful descriptions of each venom’s sensation and a story that leaves you tingling with awe, The Sting of the Wild’s one-of-a-kind style will fire your imagination.

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