Nocturnal activity of Trochosa Ruricola (DEGEER) and T. Terricola xhorell (lycosidae, araneae) samp­led by the time-sorting Pitfall Trap

Abstract

In this study, diel activity of Trochosa ruricola (Degeer) and T. terricola Thorell (Lycosidae Araneae) was determined using the time-sorting pitfall trap in grasslands and fields in northe- ast England. In spite of capture of Trochosa ruricola and T. terricola during day-time and night, most were caught during the dark periods. The ratio of adults of T. ruricola caught during the dark periods to the light periods was 1 / 0.28 in the field, and 1 / 0.23 in the grassland. For T. terricola, the same ratio was 1 / 0.17 in the field, and it was 11 0.26 lycosid in the grassland. Aınong the dark periods, much activity was recorded during the sunset and evening periods for the species. Littie activity was recorded during the sunrise and morning periods. While the adults were nocturnal, the immatures of Trochosa were found as diurnal. In addition, T. ruri­ cola was more active in the field while T. terricola was more active in the grassland.

Keywords

• Nocturnal activity
• Trochosa Ruricola
• Terricola xhorell

References

1. Ankara Üniversitesi – Communications Faculty of Sciences University of Ankara Series C Biology Dergisi