Baur b (91 Ergebnisse)

Hardcover. Zustand: As New. Leichte Kratzer / Abnutzungen / Druckstellen. Focuses primarily on aortic and mitral valve disease. Special attention devoted to optimal timing and the role of echocardiography to assess prosthetic valve function and dysfunction. Discusses techniques for aortic valve surgery and choosing valve replace…

Ed. North-Holland, Amsterdam - 1980, in-8, broché, 106 pages (table des matières sur la photo) Bon état - Pour les envois hors de France, la tafication «livre & brochure» pour les frais de port a disparue.Les frais de port annoncés correspondent à une moyenne. Ils seront calculés au plus juste en fonction du poids de votre artic…

Zustand: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Book contains pen & pencil markings. In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,650grams, ISBN:97…

Morphological investigations showed that the sperm storage organ (spermatheca) of the simultaneously hermaphroditic land snail Arianta arbustorum consists of 28 tubules with a common entrance. Sites of sperm storage were examined in snails that mated once (eight individuals) or twice (ten individuals). After one year during whic…

An experiment was conducted to examine whether extended courtship display (a major component of mating behaviour) or repeated copulation in the course of a reproductive season stimulates egg production in the simultaneously hermaphroditic land snail Arianta arbustorum. Repeated copulation was found to increase the number of eggs…

We examine whether pioneer species of terrestrial gastropods (snails and slugs) possess particular life history traits commonly associated with r-selection, using data on gastropod colonization in four areas in north-west Europe (the Kvarken and Tvärminne archipelagos in the Baltic, polder woods in IJsselmeer, and a rehabilitate…

The simultaneously hermaphroditic land snail Arianta arbustorum mates several times in the course of a reproductive season. Repeated matings might be adaptive for the male function of A. arbustorum to inseminate several "females." We designed an experiment to evaluate the effects of repeated mating on the female reproductive suc…

The genetic differentiation of populations having colonized formerly unsuitable habitats after the Pleistocene glaciations depends to a great extent on the speed of expansion. Slow dispersers maintain their refugial diversity whereas fast dispersal leads to a reduction of diversity in the newly colonized areas. During the Pleist…

Inferences were made on causes of death from the circumstances under which dead Arianta arbustorum or its empty shells were found. The causes included water, avalanches, heat, drought and predation by birds and mammals. In captivity A. arbustorum was accepted as prey by mammals and invertebrates. Population density in cages had…

Species richness of land snails living under isolated stones on an exposed rock surface on the Baltic island of Öland, Sweden, was examined in relation to stone size, microhabitat diversity and isolation. Twelve species [Chondrina clienta, Pupilla muscorum, Clausilia bidentata, Vallonia pulchella, Vitrina pellucida, Vallonia cos…