A homolog of the hydrolase Notum is expressed during segmentation and appendage formation in the Central American hunting spider Cupiennius salei

2005 ◽  
Vol 92 (5) ◽  
pp. 246-249 ◽  
Author(s):  
Nikola-Michael Prpic ◽  
Wim G. M. Damen
Keyword(s):  
Central American ◽  
Cupiennius Salei ◽  
Appendage Formation ◽  
Spider Cupiennius Salei ◽  
Hunting Spider

Venom of the hunting spider Cupiennius salei (

Toxicon ◽  
1997 ◽  
Vol 35 (6) ◽  
pp. 813 ◽  
Author(s):  
L. Kuhn-Nentwig ◽  
W. Nentwig
Keyword(s):  
Cupiennius Salei ◽  
Spider Cupiennius Salei ◽  
Hunting Spider

Effects of size, motility and paralysation time of prey on the quantity of venom injected by the hunting spider Cupiennius salei

1999 ◽  
Vol 202 (15) ◽  
pp. 2083-2089 ◽  
Author(s):  
H. Malli ◽  
L. Kuhn-Nentwig ◽  
H. Imboden ◽  
W. Nentwig
Keyword(s):  
Prey Species ◽  
Prey Size ◽  
Experimental Studies ◽  
Energetic Cost ◽  
Cupiennius Salei ◽  
Predator Prey ◽  
Minor Significance ◽  
Spider Cupiennius Salei ◽  
Hunting Spider ◽  
Behavioural Adaptations

Previous experimental studies have shown that neotropical wandering spiders (Cupiennius salei) inject more venom when attacking larger crickets. It has been postulated that this is a consequence of predator-prey interactions during envenomation, which increase in intensity with the size of a given prey species. The present study was designed to test this hypothesis using anaesthetized crickets of different sizes that were moved artificially. Cupiennius salei was found (1) to inject more venom the greater the intensity of the struggling movement of the crickets (prey size kept constant); (2) to inject more venom the longer the duration of the struggling movement of the crickets (prey size and intensity of movement kept constant); and (3) to inject equal amounts into crickets of different size (duration and intensity of movement kept constant). These results indicate that C. salei alters the amount of venom it releases according to the size and motility of its prey. Venom expenditure depends mainly on the extent of the interactions with the prey during the envenomation process, whereas prey size is of minor significance. The regulation of venom injection in concert with behavioural adaptations in response to various types of prey minimizes the energetic cost of venom production, thus increasing the profitability of a given prey item.

scholarly journals CSTX-1, a toxin from the venom of the hunting spider Cupiennius salei, is a selective blocker of L-type calcium channels in mammalian neurons

2007 ◽  
Vol 52 (8) ◽  
pp. 1650-1662 ◽  
Author(s):  
Helmut Kubista ◽  
Roberta A. Mafra ◽  
Youmie Chong ◽  
Graham M. Nicholson ◽  
Paulo S.L. Beirão ◽  
...  
Keyword(s):  
Calcium Channels ◽  
Cupiennius Salei ◽  
Selective Blocker ◽  
Spider Cupiennius Salei ◽  
Hunting Spider

THE QUALITY OF VISION IN THE CTENID SPIDER CUPIENNIUS SALEI

1992 ◽  
Vol 164 (1) ◽  
pp. 227-242 ◽  
Author(s):  
M. F. LAND ◽  
F. G. BARTH
Keyword(s):  
Predator Avoidance ◽  
Prey Capture ◽  
Cupiennius Salei ◽  
Quality Of Vision ◽  
Visual Behaviour ◽  
Similar Range ◽  
Retinal Resolution ◽  
Spider Cupiennius Salei ◽  
Median Eyes

Much is known about the mechanosensory behaviour of the spider Cupiennius Keyserling, but much less about its visual capabilities. In this study the quality of the optical image, the retinal resolution and the fields of view were assessed for each of the four pairs of eyes. The image is of good quality in all eyes. The principal (antero-median) eyes lack a tapetum and have an inter-receptor angle of 2.9°. The three secondary eyes (antero-lateral, postero-median and posterolateral) all have ‘gridiron’ tapeta with receptors arranged in rows. The angular separations (along rows × between rows) are 3.6° × 9.3°, 0.9° × 2.3° and 1.0° × 3.0°, respectively. Although the disposition of eyes on the head is similar to that of pisaurid spiders, all other features of the eyes, including the sizes and shapes of the fields of view, resemble those of lycosid spiders. The peripheral visual system of Cupiennius can thus, in principle, support a similar range of visual behaviour to that of lycosids, which includes prey capture, predator avoidance and courtship.

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