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LOCOMOTORY ACTIVITY AND SEXUAL DISPLAY IN PARDOSA AMENTATA (Cl.) (LYCOSIDAE, ARANEAE) by L. VLIJM, J. DEN HOLLANDER and S. E. WENDELAAR BONGA (Department of Biology, Free University, Amsterdam, The Netherlands) CONTENTS I. Introduction ..... 475 II. Materials and methods ..... 476 III. Results and conclusions ..... 478 IV. Discussion........................... 482 Acknowledgements ..... 483 References ..... 484 I. INTRODUCTION A number of phenological studies have been carried out on spiders of the genus Pardosa (WIEBES, 1960 ; VLIJM & KESSLER-GESCHIERE, 1967). These wolf spiders (F. Lycosidae) are terrestrial carnivores which do not build webs to catch their prey and which are active during the day on the ground surface and vegetation. Much ecological data for the group have been collected by hand sampling or pitfall trapping. As younger instars are less readily caught in pitfall traps than the sexually mature spiders, the ecology of the latter individuals is better known. Soon after courtship and mating the females produce a cocoon (egg sac) which they carry attached to their spinnerets until the spider- lings emerge. VLIJM & RICHTER (1966) demonstrated that adult males of Pardosa lugubris exhibit increased locomotory activity during the time that the females are carrying cocoons. VLIJM
Netherlands Journal of Zoology (in 2003 continued as Animal Biology) – Brill
Published: Jan 1, 1969
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