Defensive Mechanisms in Social Insects PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Defensive Mechanisms in Social Insects PDF full book. Access full book title Defensive Mechanisms in Social Insects by Henry R. Hermann. Download full books in PDF and EPUB format.
Author: Henry R. Hermann
Publisher: Greenwood
ISBN:
Category : Science
Languages : en
Pages : 280
Get Book Here
Book Description
Author: Henry R. Hermann
Publisher: Greenwood
ISBN:
Category : Science
Languages : en
Pages : 280
Get Book Here
Book Description
Author: David L. Evans
Publisher: SUNY Press
ISBN: 9780887068966
Category : Science
Languages : en
Pages : 502
Get Book Here
Book Description
This work takes a fresh, modern approach to investigate and explain the predator and prey relationships of insects and spiders, the major terrestrial fauna on earth. Devoted to broad and in-depth analysis of arthropod defenses against predators, the book's approach is both experimentally and theoretically based with major emphasis on evolution, predator strategies and tactics, and prey defensive adaptations and behaviors. The authors explain such topics as cryptic and aposematic coloration, the conflict between sexual and survival needs, web spider prey choice and evolution of prey counter defenses, predator-prey interactions and the origins of intelligence, bird predatory tactics, and caterpillar defense strategies. Also examined is the use of timing for fitness and survival, evolutionary gamesmanship in the predatory bat-moth relationship, colony defense by aper wasps, startle as a defense by moths, aggregation as a defense, chemicals as defenses, plant chemicals as defenses, and venoms as defenses. The authors illustrate each topic with numerous specific well-documented examples presented in a clear, readable style.
Author: D. Hoffmann
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
Get Book Here
Book Description
Author: Henry R. Hermann
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 520
Get Book Here
Book Description
The enemies and defense mechanisms of termites; Defensive mechanisms in the social hymenoptera; Presocial insects; Sociality in the arachnida; Systematics of social hymenoptera.
Author: Henry Hermani
Publisher: Elsevier
ISBN: 0323147828
Category : Science
Languages : en
Pages : 506
Get Book Here
Book Description
Social Insects, Volume II is essentially a continuation and review of topics covered in Volume I. The main focus of this volume is on the systematic of eusocial hymenoptera and the closely associated realms of presocial insects and social non-insectan arthropods. Consisting of five major chapters, this volume starts with the chapter on the enemies and defense mechanisms of termites. Several mechanisms are discussed in this chapter, such as defense by the nest, workers, and soldiers. Chapter 3 focuses on presocial insects and a comparison of parental care without nests and based on nests. Chapter 4 discusses the sociality of Arachnida and emphasizes the patterns and evolution of sociality in Arachnida, particularly spiders. Two chapters discuss the social hymenoptera, including its defensive mechanisms and its systematics. This volume will be of great help to students and professionals in the field of entomology, biology, and zoology.
Author: Hellen Edwards
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
The lifestyle of social insects makes them highly susceptible to pathogen infection compared with non-social insects. Among social insects, the challenges faced by fungus-growing ants additionally differ from those of other insects because they maintain clonal, mutualistic fungus gardens that can get diseased in addition to the ants, which themselves can also get diseased. Fungus-growing ants use behavioral and chemical mechanisms to defend both their fungus gardens and themselves from infection by foreign microbes. Previous research has characterized defensive behaviors and chemical responses to these pathogens, including the ants' association with the defensive symbiont Pseudonocardia and the antibiotic secretions produced by the ants' metapleural glands. Much less is known about the ants' immune system and the potential role of antimicrobial peptides (AMP) in such defense. We hypothesized that the ants use behavioral and immune defenses in response to pathogen infection and modulate these responses in a pathogen-specific manner. We used inoculation bioassays and RTqPCR analysis to examine the fungus growing ant T. septentrionalis's weeding behavior and AMP gene expression levels following treatment with pathogens of the fungus garden (Trichoderma and Escovopsis), ant pathogens (Metarhizium brunneum and Beauvaria bassiana), and bacteria isolated from a fresh fungus garden that represent natural symbionts and immigrants of the fungus garden, which might also cause a fitness decrease. The ants increased their weeding behavior significantly following treatment with ant pathogens, but no significant changes were observed following treatments with fungus garden pathogens or with fungus garden bacteria, indicating that ant responses differ between microbes. Overall AMP gene expression levels did not differ between treatments. Only some AMP genes were detected in control subcolonies, suggesting that the other AMP genes are repressed in the absence of infection. In certain treatments, some AMP genes were induced or repressed. However, most of these patterns were idiosyncratic and varied between colonies. Thus, both ant weeding behavior and AMP gene expression changed in response to infections, but AMP gene expression was much more variable between both treatments and colonies. Based on our findings, we propose that the ants respond to infection by integrating multiple defense mechanisms and that this response varies based on pathogen type.
Author: P. Gopalakrishnakone
Publisher:
ISBN: 9789400767287
Category : Plant toxins
Languages : en
Pages :
Get Book Here
Book Description
Author: Philip Edwin Howse
Publisher:
ISBN:
Category : Animal defenses
Languages : en
Pages : 266
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 248
Get Book Here
Book Description
Author: Paul Schmid-Hempel
Publisher: Princeton University Press
ISBN: 9780691059242
Category : Science
Languages : en
Pages : 436
Get Book Here
Book Description
In addition, the author develops new insights, especially in his examination of the intricate relationships between parasites and their social hosts through the rigorous use of evolutionary and ecological concepts.".
