Nombre de vues : 4 673 First part : cuticular mechanoreceptors Alike all arthropods, insects have an external skeleton, the exoskeleton, consisting of chitin and forming the cuticle (lire th article). Its insulating properties imply that the cuticle creates a barrier to the reception of stimuli from the external environment to the internal physiological environment. In…
Nombre de vues : 2 416 Insects are the first organisms to have developed the ability to fly, 170 million years ago (lire article on phylogeny). The acquisition of flight was a major innovation in their evolution: it gave them a decisive advantage such as escaping predation, fleeing a hostile environment to seek a more favourable…
Nombre de vues : 3 208 Insects are the only invertebrates that have acquired the ability to fly (place insects in the classification, read th article). Unlike other flying animals such as birds and bats, where the wings come from the forelegs, those of insects have a completely different structure and origin. Their origin and evolutionary…
Nombre de vues : 6 932 General description of different types of insect mouthparts adapted to diet Insects, present on earth for at least 479 million years (read this article), have been able to conquer all types of environment and environment thanks to their ability to exploit all the food resources of these environments. Natural selection…
Nombre de vues : 3 349 Insects are arthropod invertebrates consisting of an external skeleton (cuticle or exoskeleton) that they must change regularly to grow. For more information, read this article. Each cuticle change is the moult. In some species, the transition from larval to adult stage implies a profound change in morphology, biology and ecology….
Nombre de vues : 2 403 As it is recalled here, the insects, belonging to the group of Arthropods, consist of an external skeleton (exoskeleton or cuticle) rigid and inextensible, which force them to grow in successive stages by the loss of the old become too small. The Mue is therefore the process of producing a…
Nombre de vues : 3 323 The question that comes up when talking about Entomology and insects, is »What is an insect?« . Not all the little animals around us are insects! Many people, with whom I talk about my passion, integrate spiders and scorpions into insects. That’s why, I wanted to start this blog by giving a…
Nombre de vues : 3 878 Parthenogenesis Parthenogenesis is a mode of reproduction without fertilization of the female gamete by a male gamete, without contribution of genetic material. This is similar to asexual reproduction. This mechanism can be observed in plant species but also in invertebrates such as insects and certain vertebrate species such as reptiles….
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