The production of natural toxins is an interesting aspect, which characterizes the physiology and the ecology of a number of marine species that use them for defence/offence purposes. Cnidarians are of particular concern from this point of view; their venoms are contained in specialized structures--the nematocysts--which, after mechanical or chemical stimulation, inject the venom in the prey or...

Sexual dimorphism can result from sexual or ecological selective pressures, but the importance of alternative reproductive roles and trait compensation in generating phenotypic differences between the sexes is poorly understood. We evaluated morphological and behavioral sexual dimorphism in striped bark scorpions (Centruroides vittatus). We propose that reproductive roles have driven sexually d...

Cnidarian jellyfish are viewed as an emergent problem in several coastal zones throughout the world. Recurrent outbreaks pose a serious threat to tourists and bathers, as well as to sea-workers, involving health and economical aspects. As a rule, cnidarian stinging as a consequence of nematocyst firing induces merely local symptoms but cardiovascular or neurological complications can also occur...

Cnidarian jellyfish are viewed as an emergent problem in several coastal zones throughout the world. Recurrent outbreaks pose a serious threat to tourists and bathers, as well as to sea-workers, involving health and economical aspects. As a rule, cnidarian stinging as a consequence of nematocyst firing induces merely local symptoms but cardiovascular or neurological complications can also occur...

Providing improved health care for wound, burn and surgical patients is a major goal for enhancing patient well-being, in addition to reducing the high cost of current health care treatment. The introduction of new and novel biomaterials and biomedical devices is anticipated to have a profound effect on the future improvement of many deleterious health issues. This publication will discuss the ...

for detecting the crowding of texture are both at play. Disentangling the two will be an interesting challenge. One promising line, as Durgin [8] suggests, will be to look for dissociations between number and texture perception. Manuela Piazza, Stanislas Dehaene and Marco Zorzi (personal communication) have shown that dyscalculic individuals have higher Weber fraction for number discrimination ...

The parasitism efficiency of a parasitoid largely depends on its host location and stinging behaviour. This study aimed to assess the behaviour Diglyphus isaea larvae some selected plants. Three plants, including tomato, eggplant, pepper, were evaluated for their influence D. isaea's results showed that was significantly influenced by plant. highest frequency observed tomato followed eggplant p...