Vergleichende Untersuchungen zur Funktion der Ameisenmetathorakaldrüse

  title={Vergleichende Untersuchungen zur Funktion der Ameisenmetathorakaldr{\"u}se},
  author={Ulrich Maschwitz},
SummaryIn 6 of 7 ant subfamilies investigated, the workers produce an acidic secretion in their metapleural glands. With the exception of the gland fluid of Cremastogaster (Physocrema) inflata, all tested secretions were found to suppress the growth of Escherichia coli. From this and from former results, it is concluded that the metapleural gland contents function as an antiseptic.In Cremastogaster inflata the metapleural gland is greatly enlarged. The workers release the highly sticky… 

Experimental evidence for the costs and hygienic significance of the antibiotic metapleural gland secretion in leaf-cutting ants

It is shown that major workers of this leaf-cutting ant experience a significant reduction in their respiration rate when the metapleural glands are experimentally closed, indicating that meetingapleural gland secretion incurs a substantial cost and that the production of compounds from these glands is terminated when the ants are incapable of secreting them.

Functional morphology of the metapleural gland in workers of the ant Crematogaster inflata (Hymenoptera, Formicidae)

Workers of Crematogaster inflata possess the largest metapleural glands (relative to body size) known among ants, with reservoirs extending anteriorly up to the junction between the pro-and the

Metapleural Gland Secretion of the Leaf-cutter Ant Acromyrmex octospinosus: New Compounds and Their Functional Significance

A comprehensive analysis of metapleural gland secretions of Acromyrmex octospinosus using a recently developed method for the analysis of polar compounds by gas chromatography and mass spectrometry shows that the chemical identity and quantitative recovery of different compounds in the metapeural gland secretion depends upon the method used and the type of colony from which the samples are taken.

Oily substances from gastral intersegmental glands of the antPachycondyla tridenta (Ponerinae): Lack of pheromone function in tandem running and antibiotic effects but further evidence for lubricative function

Morphology and position of the glands, lack of pheromonal function, oily properties, low volatility, and lack of antibiotic effects of these secretions strongly suggest a function as lubricants for the ants' gastral segments.

Secretory profile of metapleural gland cells of the leaf‐cutting ant Acromyrmex coronatus (Formicidae: Attini)

The findings revealed that the secretory and the storage portions of this gland are connected by extracytoplasmic portion of canaliculi that drain the secretion from each secretory cell to the collecting chamber, supporting the role of the metapleural gland in the maintenance of the fungus garden.

The metapleural glands of fungus-growing and non-fungus-growing ants: Ultrastructural study

The results add that the slight ultrastructural difference in the metapleural glands of leaf-cutting ants can be due to the feeding type (fungus-growing ants), resulting in greater secretory capacity and antimicrobial properties to combat pathogens.

Chemical composition and function of metapleural gland secretion of the ant,Crematogaster deformis smith (hymenoptera: Myrmicinae)

The secretion of the hypertrophied metapleural gland of the antCrematogaster deformis contains a mixture of phenols, consisting mainly of 3,4-dihydro-8-hydroxy-3-methylisocoumarin (mellein), 5-propylresorcinol, and 5-pentylresol, which has some insecticidal properties.

Active use of the metapleural glands by ants in controlling fungal infection

Ants selectively groom their MGs when disease agents are present, suggesting that they also selectively use their MG secretions, which has important implications for understanding the evolution of hygienic behaviour in social groups.

ECOLOGY, BEHAVIOR AND BIONOMICS Seasonal Variations of Metapleural Secretion in the Leaf-Cutting ant Atta sexdens piriventris Santschi (Myrmicinae: Attini), and Lack of Fungicide Effect on Beauveria bassiana (Bals.) Vuillemin

The results suggest that metapleural secretion of workers is not the main mechanism of A. sexdens piriventris colony asepsis and the fungus-growing ant Beauveria bassiana has no fungicidal activity against this pathogen.

Inhibition of Fungal Spore Germination by Nasutitermes: Evidence for a Possible Antiseptic Role of Soldier Defensive Secretions

The results suggest that although Nasutitermes terpenoid secretions may have antifungal properties, the caste composition of groups and the social interactions of termites also play a role in determining susceptibility to fungal infection.



Platzende Arbeiterinnen: Eine neue Art der Feindabwehr bei sozialen Hautflüglern

The term “autothysis” (greek.: self sacrifice) is proposed for the phenomenon of self sacrifice is social insects to which the bursting of C. saundersi and the related species belongs.

Gefahrenalarmstoffe und Gefahrenalarmierung bei sozialen Hymenopteren

  • U. Maschwitz
  • Biology
    Zeitschrift für vergleichende Physiologie
  • 2004
Bei allen Hymenopterenstaaten, die eine hohe soziale Organisation aufweisen, wurde eine Gefahrenalarmierung nachgewiesen, werden mit Ausnahme der Bienenkönigin auch von den weiblichen Geschlechtstieren produziert.

Remarks on the internal phylogeny and subfamily classification of the familyFormicidae

At present, the most widely accepted subfamily classification of the Formicidae is that gradually evolved over many years by MAvR, FOREL and E.~IERY and refined most recently by W. M. WHEELER (1920,

The Fauna of British India, including Ceylon and Burma

This completes the important section of Aculeata, or stinging Hymenoptera, and the monographing of the remaining groups, which are still very imperfectly known, is very properly deferred for the present.

The Insect Societies

Conducts a definitive study of the social structure and symbiotic relationships of termites, social wasps, bees, and ants.

Myrmicacin, das erste Insekten‐Herbicid

An Introduction to the Behaviour of Ants

An Hypothesis Concerning the Function of the Metapleural Glands in Ants

  • W. Brown
  • Biology
    The American Naturalist
  • 1968
A rapid survey of the collection of the ants in the Museum of Comparative Zoology, Harvard University, and some other collections, has turned up additional cases of ants in which, judging now only from externally visible structures, the metapleural gland is absent, nonfunctional, or significantly reduced.