%0 Journal Article %T Age and egg-sac loss determine maternal behaviour and locomotor activity of wolf spiders (Araneae, Lycosidae) %+ Ethologie animale et humaine (EthoS) %A Ruhland, Fanny %A Chiara, Violette %A Trabalon, Marie %Z The authors would like to thank Dr Ann Cloarec (University of Rennes 1) and Prof. Simon N. Thornton (University of Lorraine) for reading the manuscript, Nathalie Morris and Céline Nicolle for animal maintenance (University of Rennes 1). %< avec comité de lecture %@ 0376-6357 %J Behavioural Processes %I Elsevier %V 132 %P 57-65 %8 2016-11 %D 2016 %R 10.1016/j.beproc.2016.09.011 %M 27693534 %K Pardosa saltans %K arachnids %K mobility %K development status %K maternal care %Z Life Sciences [q-bio]/Animal biology/Invertebrate Zoology %Z Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior %Z Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences %Z Life Sciences [q-bio]Journal articles %X Wolf spiders’ (Lycosidae) maternal behaviour includes a specific phase called “egg brooding” which consists of guarding and carrying an egg-sac throughout the incubation period. The transport of an egg-sac can restrict mothers’ exploratory and locomotor activity, in particular when foraging. The present study details the ontogeny of maternal behaviour and assesses the influence of age of egg-sac (or embryos’ developmental stage) on vagrant wolf spider Pardosa saltans females’ exploration and locomotion. We observed these spiders’ maternal behaviour in the laboratory and evaluated their locomotor activity using a digital activity recording device. Our subjects were virgin females (without egg-sac) and first time mothers (with her egg-sac) who were divided into three groups. The first group of mothers were tested on the day the egg-sac was built (day 0), and the females of the other two groups were tested 10 or 15 days after they had built their egg-sac. We evaluated the effects of the presence and the loss of egg-sac on mothers’ activity. Pardosa saltans females’ behaviour depended on mothers’ physiological state and/or age of egg-sac (developmental stage of embryos). Virgin females’ behaviour was not modified by the presence of an egg-sac in their environment. Mothers’ reactions to the presence, the loss and the recovery of their egg-sac varied during the maternal cycle. Maternal behaviour changed with age of egg-sac, but the levels of locomotor activity of mothers with egg-sacs was similar to those of virgin females. Loss of egg-sac modified the maternal behaviour and locomotor activity of all mothers; these modifications were greater on “day 15” when embryos had emerged from eggs. All mothers were able to retrieve their egg-sacs and to re-attach them to their spinnerets. %G English %2 https://univ-rennes.hal.science/hal-01375498/document %2 https://univ-rennes.hal.science/hal-01375498/file/Ruhland%20et%20al.%20-%20Age%20and%20egg-sac%20loss%20determine%20maternal%20behaviour-%20.pdf %L hal-01375498 %U https://univ-rennes.hal.science/hal-01375498 %~ UNIV-RENNES1 %~ CNRS %~ ETHOS %~ ETHOS-ICDC %~ COMUE-NORMANDIE %~ UR1-UFR-SVE %~ UR1-HAL %~ UR1-SDV %~ ETHOS-DEEP %~ TEST-UNIV-RENNES %~ TEST-UR-CSS %~ UNIV-RENNES %~ UNICAEN %~ UR1-BIO-SA