Vorträge / Lectures

Vortrag zur Herbstbörse am 29.10.2016

Professor F. G. Barth:
SPINNEN-SINNE - zwischen Ökologie und technischer Perfektion

Professor Barth ist ein weltweit anerkannter Arachnologe und Neurobiologe. Er untersucht unter anderem von Mechanorezeptoren gesteuertes Verhalten bei araneomorphen Spinnen und den Aufbau von deren mechanischen Rezeptoren wie z.B. der Sinneshaare. Viele der Ergebnisse vor allem aus der Arbeit mit der Spinnenart Cupiennius salei hat er in dem wichtigen Buch "Sinne und Verhalten - aus dem Leben einer Spinne" zusammengefasst und einem breiten Publikum zugänglich gemacht.

Professor F. G. Barth:
SPIDER-SENSES - from ecology to technical perfection

Professor Barth is a worldwide reknown arachnologist and neurobiologist. He is studying the behavior of araneomorph spiders that is triggered by their mechanoreceptors and also the structure of these mechanoreceptors e.g. trichobothria. A lot of his work especially with the spider species Cupiennius salei has been published in the book "A spider’s world: senses and behavior" and is thus accessible for a larger group of people including the hobby arachnolgists.


Vortrag zur Herbstbörse am 24.10.2015

Dr. Caroline Sayuri Fukushima:
Taxonomical revision and cladistic analysis of the genus Avicularia Lamarck 1818 (Araneae, Theraphosidae, Aviculariinae)

The genus Avicularia Lamarck, 1818 was described by Lamarck (1818) and its type species Avicularia avicularia (Linnaeus, 1758) is the oldest mygalomorph species known.Thus, its taxonomical history is very extensive and confusing and reflects the knowledge in arachnology through the centuries.To date the genus Avicularia has 49 species and is recorded from Panama through Trinidad Island, Cuba, Puerto Rico and Martinique, Guadeloupe to Venezuela, Colombia, Peru, Ecuador, Bolivia, Guiana, French Guiana, Suriname, Chile and Brazil (Platnick 2015).

Despite presenting a large number of species and having historical importance, the genus has not been revised. Until now only shorter taxonomical works were published with exception of Bertani & Fukushima (2009), which discuss some aspects of behavior, distribution and conservation of Avicularia species. The presence of 31 nomina dubia and 3 nomina nuda (Platnick 2015) plus the presence of many valid species that are not well studied, reinforce the need to review this genus.

Due to this a taxonomical revision of the genus Avicularia was done and for the first time a phylogenetic hypothesis including all Avicularia species was proposed.In addition to these taxa the cladistic analysis also includes species belonging to 7 out of 8 Theraphosid subfamilies recognized by Raven (1985), species of all Aviculariinae genera and some other available arboreal taxa with uncertain position such as Poecilotheria Simon, 1885, Heteroscodra Pocock, 1899 and Stromatopelma Karsch, 1881.

Mainly morphological characters have been used in the revision, but some ecological and behavioral characters were also included in the analysis. The genus Avicularia resulted monophyletic as well as the subfamily Aviculariinae. Some taxonomical changes and synonymies are proposed and new species are described. Furthermore, based on cladistics analysis, some new Aviculariinae genera are proposed.


Vortrag zur Frühjahrsbörse am 12.04.2014

Marie-Louise Célérier:
Stromatopelma calceatum (Fabricius, 1793), formerly Scodra griseipes (Pocock, 1897), (Mygalomorphae, Theraphosidae) of the Lamto savannah ecosystem (Ivory Coast) . Tarantulas venoms and human envenomations.

During months of 1971 summer I have been in the biological research station of  Lamto (Ivory Coast) to observe  spiders in their  wild environment and to try the rearings of a few species chosen among the most representative of the ecosystem of the savannahs.

The Palm-tree tarantula "Scodra griseipes/ Stromatopelma calceatum" had been included in the study of energy budgets that I had to compare for different species. The work lead to two complementary thesis : " Blandin  and Célérier, 1981.

The spiders from Lamto savannahs (Ivory Coast), organisation of the populations, energy budgets, place in the ecosystem ". The thesis was published (in French): Ecole Normale Supérieure, Publications du Laboratoire de Zoologie, N°21, 1981, 2 fasc., 586pp. The arboreal tarantulas were kept and studied under laboratory conditions until 2006 at the University of Paris 6 (Pierre and Marie Curie), so an experience of more than 35 years with the species. Different results will be presented.

The problem around effects in humans of the bite from tarantulas will be also approached.


Vortrag zur Herbstbörse 2013 am 26.10.2013

Dr. Jason Dunlop:Woher stammen Spinnen? Ein paläontologische Zeitreise.

Spinnen sind eine uralte Gruppe, die wir über 300 Millionen Jahre anhand von seltenen, aber oft spektakulären Fossilfunden zurückverfolgen können.Dieser Vortrag erzählt die Geschichte der Spinnen von dem möglichen Ursprung der Spinnentiere im kambrischen Meer bis zum Landgang im Silur/Devon und die ersten Nachweise für echte Gliederspinnen am Ende des Karbons.Zwischen Irrtümern und Falschbestimmungen können Paläontologen den Ablauf der Evolution Stück für Stück rekonstruieren. Im Trias tauchen die ersten Vertreter der Mygalomorpha und Araneomorpha auf. Neufunde aus dem Jura von China sind besonders wichtige Zeitzeugen.
Es ist denkbar, dass die blühenden Pflanzen eine große Rolle gespielt haben, indem sie die Evolution der bestäubenden Insekten gefördert und neue Nahrungsquellen für Spinnen verschafft haben. Ab der Kreidezeit bietet Bernstein einen Reichtum an Material, wobei neue Techniken wie die Computer Tomographie einen neuen Blick in die Welt der Spinnen erlauben. Manche Spinnen, wie die Springspinne, sind offensichtlich ‚Spätentwickler‘ und sind nur ab dem Eozän bekannt.

Und jetzt die Frage:

Gibt es fossile Vogelspinnen? Es wird sie geben, aber das dauert ein Weilchen…