Results 191 to 200 of about 3,128 (222)

Prolonged milk provisioning in a jumping spider

Science, 2018
Spider nursery Mammals produce milk to feed their offspring, and maternal care often continues well after the young can forage for themselves. Though other cases of milk-like secretions have been found, this combination of ongoing maternal care has largely been considered a uniquely mammalian trait. Chen et al.
Zhanqi Chen, Richard T. Corlett, Xiaoguo Jiao, Sheng-Jie Liu, Tristan Charles-Dominique, Shichang Zhang, Huan Li, Ren Lai, Chengbo Long, Rui-Chang Quan   +9 more
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Hypersensitivity in the Anterior Median Eye of A Jumping Spider

Journal of Experimental Biology, 1976
ABSTRACT Changes in sensitivity of the photoreceptor cells of the anterior median eye of the jumping spider Menemerus confusus Boes, et Str. have been studied by recording electroretinograms (ERGs) and receptor potentials. The amplitudes of the responses (ERGs and receptor potentials) increase during repetitive stimulation, with a ...
S, Yamashita, H, Tateda
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Visual attention and processing in jumping spiders

Trends in Neurosciences
Jumping spiders have extraordinary vision. Using multiple, specialized eyes, these spiders selectively gather and integrate disparate streams of information about motion, color, and spatial detail. The saccadic movements of a forward-facing pair of eyes allow spiders to inspect their surroundings and identify objects.
Alex M, Winsor, Luke, Remage-Healey, Ronald R, Hoy, Elizabeth M, Jakob   +3 more
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The Jumping Mechanism of Salticid Spiders

Journal of Experimental Biology, 1959
ABSTRACT Photographs of the jumping spider Sitticus pubescens (Salticidae) show that the jump is almost entirely due to the sudden straightening of the fourth pair of legs. Multiple-image photographs show the importance of a silk drag-line in controlling the jump. The torques at the leg joints have been estimated. Extension torques occur
D. A. Parry, R. H. J. Brown
openaire   +1 more source

The jumping spiders of Mozambique (Araneae: Salticidae)

Zootaxa
Only 26 species of jumping spiders have been recorded from Mozambique to date. The present study is based on materials from four museum collections. Fourteen species are described as new to science: Habrocestum mozambicum sp. nov. (♂ ♀), Hyllus bisulcus sp. nov. (♂), H. ornatus sp. nov. (♂ ♀), H. simplex sp. nov. (♂), H. tetensis sp.
Haddad, Charles Richard, Wiśniewski, Konrad, Wesołowska, Wanda   +2 more
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Place avoidance learning and memory in a jumping spider

Animal Cognition, 2016
Using a conditioned passive place avoidance paradigm, we investigated the relative importance of three experimental parameters on learning and memory in a salticid, Servaea incana. Spiders encountered an aversive electric shock stimulus paired with one side of a two-sided arena. Our three parameters were the ecological relevance of the visual stimulus,
Tina, Peckmezian, Phillip W, Taylor
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Association and reversal learning abilities in a jumping spider

Behavioural Processes, 2014
The ability to learn and overwrite learned associations allows animals to respond adaptively to changes in their environment. However, such behavioural plasticity is presumed to be costly and the question arises to which extent animals with restricted neuronal capacity are capable of such flexible behaviour.
Jannis, Liedtke, Jutta M, Schneider
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Rearing environment affects behaviour of jumping spiders

Animal Behaviour, 2000
We tested the effect of rearing conditions on the behaviour of jumping spiders, Phidippus audax. Spiders were assigned randomly to either small or large cages that either were empty or contained a painted dowel. Laboratory-reared spiders were raised from second instar to adult in these environments.
, Carducci, , Jakob
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Jumping kinematics in the wandering spider Cupiennius salei

Journal of Comparative Physiology A, 2010
Spiders use hemolymph pressure to extend their legs. This mechanism should be challenged when required to rapidly generate forces during jumping, particularly in large spiders. However, effective use of leg muscles could facilitate rapid jumping. To quantify the contributions of different legs and leg joints, we investigated jumping kinematics by high ...
Tom, Weihmann, Michael, Karner, Robert J, Full, Reinhard, Blickhan   +3 more
openaire   +2 more sources

Behavioural evidence of UV sensitivity in jumping spiders (Araneae: Salticidae)

Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology, 2006
Matthew L M Lim, Daiqin Li, Li Daiqin
exaly