Funktionsanatomie der genitalorgane und fortpflanzungsverhalten bei den männchen der Erythraeidae (Acari, trombidiformes)

  title={Funktionsanatomie der genitalorgane und fortpflanzungsverhalten bei den m{\"a}nnchen der Erythraeidae (Acari, trombidiformes)},
  author={Harald Witte},
  journal={Zeitschrift f{\"u}r Morphologie der Tiere},
  • H. Witte
  • Published 1 June 1975
  • Biology
  • Zeitschrift für Morphologie der Tiere
SummaryThe study is concerned with both the functional anatomy of the genital organs and reproductive behavior of the males in the family Erythraeidae.The testes of Erythraeidae consist of a germ layer and a glandular part which produces three different types of protein secretion: Type I forming a thin envelope around sperm cells, type II giving rise to the stalk of the spermatophore, and type III in Abrolophus species secreting a crown topping the sperm drop. Sperm cells and droplets of… 

Ultrastruktur-Untersuchungen am männlichen Genitaltrakt und an Spermien vonTetranychus urticae (Tetranychidae, Acari)

The paired testes of the spider miteTetranychus urticae are divided in a part producing germ cells and a secretory portion with a vast lumen, characterized by the following features: invagination of the plasma membrane, degeneration of cell organelles, reduction in size and condensation of nucleus and cytoplasm.

Die postembryonale Entwicklung und die funktionelle Anatomie des Gnathosoma in der Milbenfamilie Erythraeidae (Acarina, Prostigmata)

SummaryThe gnathosoma of seven species of the Erythraeidae was investigated. The postembryonic development of the cuticular structures, the musculature and the glands are described.In the larval

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It is corroborated that testes and sperm structure of Actinotrichida are most similar to that of Solifugae, however, synapomorphies between sperm cells of Rhagidia and SolifUGae that could suggest a closer relationship between these two taxa as was suggested in earlier studies were not recognizable.

An ultrastructural investigation of the testes and spermiogenesis in Myobia murismusculi (Schrank) (Acari, Actinedida: Myobiidae)

The stages of spermiogenesis in Myobia murismusculi were investigated on the basis of ultrastructural analysis of both the testes and the female organs: receptaculum seminis and seminal duct to identify the germ cells, which are represented by the early, the intermediate and the late spermatids as well as the immature sperm.

Male genital system and spermiogenesis of Nanorchestes amphibius (Acari: Endeostigmata: Nanorchestidae): Anatomy, histology, and evolutionary implications

The anatomy and histology of the male genital system of an endeostigmatid mite are described for the first time and the results do not support the current view that Nanorchestidae are more closely related to Sarcoptiformes than to Prostigmata.

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This further, although less evident, case of probable dichotomous germ cell development is discussed with respect to the controversial phylogenetic‐systematic relationships between Uropygi (Thelyphonida and Schizomida), Amblypygi, and Araneae.

On the internal organization o f sm aridid mites ( Acari , Erythraeoidea ) , and on the role o f organism al properties for determ ining the course o f evolutionary change

Which adaptive transformations have probably led to the smaridid organization and which organismal properties, e.g. developmental preconditions, constraints and key innovations, may have determined the course of evolutionary change are discussed.

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Fine structure of the cell types involved are dealt with for the first time for a schizomid species and results are discussed under comparative and functional aspects.

Review Canalized pathways of change and constraints in the evolution of reproductive modes of microarthropods

It is shown how in a changed environment few behavioural changes have initiated an evolutionary sequence which has finally led convergently in several lineages to semi-direct or direct sperm transfer and to a massive repatterning of the original reproduction pattern.



Fortpflanzungsverhalten und fortpflanzungsorgane der schnabelmilben (Acarina : Bdellidae, Trombidiformes)

  • G. Alberti
  • Biology
    Zeitschrift für Morphologie der Tiere
  • 2004
An investigation of the biology and anatomy of the mite family Bdellidae (Trombidiformes) included a study of the mating behaviour and the genital system of ten species, including the complicated male genital system and spermatophores of species of all four subfamilies.


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It has been found that chiggers accomplish insemination with spermatophores, and it is demonstrated that female chigs can be inseminated by coming in contact in a suitable manner with these sperMatophores.

Studies on the systematics and biology of the erythracoidea (Acarina) with a critical revision of the genera and subfamilies

An attempt is made to revise comprehensively the systematics of the families, subfamilies, and genera of the Erythraeoidea (Acarina), using mainly descriptive terms of general applicability for these and other mites to establish a uniform system of setal nomenclature.

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Vergleichende Untersuchungen zur Fortpflanzungsbiologie der Pseudoscorpione

  • P. Weygoldt
  • Art
    Zeitschrift für Morphologie und Ökologie der Tiere
  • 2004
ZusammenfassungDas Verhalten, die Samenübertragungsweisen und die Spermatophoren verschiedener Arten von Pseudoscorpionen wurden beobachtet und beschrieben.Alle Pseudoscorpione setzen Spermatophoren

Histochemistry: Theoretical and Applied

The new Pearse bids fair to become the leader, even amongst so notable a collection of books devoted entirely or largely to histochemical techniques.

Einiges über die kopulation bei aturus scaber und Midea orbiculata

  • O. Lundblad
  • Biology
    Zeitschrift für Morphologie und Ökologie der Tiere
  • 2004
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