The spectral sensitivity of adult male Cupiennius salei Keys, a nocturnal hunting spider, was studied in a behavioural test. As known from earlier behavioural tests, C. salei will walk towards a black target presented in front of a white background. In this study, a black target (size 42×70 cm) was presented in a white arena illuminated by monochromatic light in the range 365-695 nm using 19 mo...

While animal color signaling has been studied for decades, we have little knowledge of the role conspicuous body coloration plays in the nocturnal context. In this study we explored animal color signaling in both diurnal and nocturnal contexts to arrive at a more comprehensive understanding of its function. We quantified how the brightly colored giant wood spiders Nephila pilipes are viewed by ...

The metaheuristic algorithms and their hybridization have been utilized successfully in the past to extract parameters of photovoltaic (PV) cells panels. novelty paper consists proposing black widow optimization algorithm (BWOA) for first time identify two RTC France, amorphous silicon (aSi), panels PWP201, PVM 752 GaAs. single-diode model (SDM) double-diode (DDM) analyzing PVs are considered. ...

Abstract We report the discovery of PSR J1555?2908, a 1.79 ms radio and gamma-ray pulsar in 5.6 hr binary system with minimum companion mass 0.052 M ? . This fast energetic ( E ? ...

i read with great interest the case report titled “periumbilical pain with radiation to both legs following tarantula bite; a case report” published in emergency journal. tarantula spiders are not medically important except for some very limited species, which do not exist in iran. solifugae -or rotails as they are called in iran- are in fact another group of animals also called camel spiders (...