Szociális pókok

Tegnap a szociális pókokról váltottam pár szót az egyik kedves olvasóval, és mint remélem köztudott, a szocialitás (valódi, fél és számos egyéb kategória) több pókcsaládban is előfordul.

Többek között a madárpókok (Striffler 2005),

a bikapókok (Stegodyphus Bilde és munkássága, Lubin és munkássága)

zugpókok (Agelena consociata)

illetve a törpepókok (Agnarsson, Avílés cikkei) esetében fordul elő.

A mai apropót az adja, hogy a Brit Kolumbia Egyetem (Vancouver Kanada) professzor, Dr. Letícia Avílés (aki Wayne Maddison híres ugrópókász, kladista, molekuláris rendszetanos és hosszasan lehet sorolni még mi - kb Platnickkal egyenértékű zseni a 70es évekből - felesége) előadást tart ma a koppenhágai egyetem, társas gerinctelenek tanszékén.

Íme a meghívó:
Dr. Laticia Aviles (U. British Columbia)Understanding spider sociality....and sociality, in general Tid: Tues 16th September at 1500h Sted: Auditorium A
Using social spiders and other animal social systems I will illustrate the role of ecology and demography in social evolution. I will show how the synergistic effects of cooperation on the fitness of group living organisms may contribute to the origin, size, and dynamics of social groups. I show how group living and cooperation allow the colonization of environments where solitary individuals cannot replace themselves while in rich ecological niches increasing levels of cooperation may lead to intrinsic dynamical instability. I will provide examples, from naked mole rats to social spiders, of organisms falling in different regions of this rich dynamical spectrum. I will also use social spiders to illustrate how the interaction between intrinsic features of organisms and the environments in which they live determine whether or not they are social and why they occur where they do.

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Akit a téma jobban érdekel talál egy érdekes listát itt, és akiket Társas Madárpókok témában cikkek édekelnek, azoknak pl. Striffler, B.F.: Sociality among theraphosids (Araneae, Mygalomorphae, Theraphosidae). European colloquium of Arachnology, St. Petersburg. 83. )
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addig is egy poszterösszefoglaló:

THE GUACHARO TARANTULA PSALMOPOEUS LANGENBUCHERI SCHMIDT ET AL. 2006 - ANOTHER SUBSOCIAL TARANTULA SPIDER (ARANEAE, THERAPHOSIDAE)? Rodriguez-Manzanilla, C.J.1 & B.F. Striffler2 1. Museo del Instituto de Zoología Agrícola, Francisco Fernández Yépez (MIZA), Facultad de Agronomía, Universidad Central de Venezuela, Apartado 4579, Maracay 2101, Aragua, Venezuela; 2. Nees-Institute for Biodiversity of Plants, University of Bonn, Germany Social behavior within the order Araneae, involving nest building, prey capture, feeding and brood care, has mostly been observed in araneomorph spiders. Reports on mygalomorph spiders are only scarce and referring to aggregations of members of the families Ctenizidae and Dipluridae (one species now recognized as a Theraphosidae). Within recent years certain stages of social behavior has been also been described for the family Theraphosidae, with the arboreal Poecilotheria from India and Sri Lanka showing the highest level of sociality. In the Neotropics until now only representatives of the fossorial genera (e.g. Holothele, Xenesthis and Pamphobeteus) are known to present a high tolerance exceeding the first three post embryonic instars. In the arboreal Avicularia or Psalmopoeus tolerance generally ends at least with the third stage. Observations of Psalmopoeus langenbucheri in the Venezuelan cloud forest already showed females tolerating older offspring, as well as specimens living relatively close to each other, with several spiders living on the same tree and even adults building the retreats within the same cracks. Under laboratory conditions it could be shown that females and their offspring live communally and feed together on large prey. Contrasting the generally low tolerance of other Psalmopoeus species the Venezuelan species P. langenbucheri shows a very high tolerance, no aggression among each other, very strong interattraction, as well as cooperation in hunting.

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Interactivity kérdés: melyik az a madárpók, amelyik szubszociális, és eredetileg a Dipluridae családban volt? Az abstractban félkövérrel kiemelve).