Results 211 to 220 of about 320,028 (267)
Some of the next articles are maybe not open access.
Insect Extinctions and Insect Survival
Conservation Biology, 2006Dunn (2005) puts forward an interesting challenge: “If we are serious about insect conservation, we need to spend more time and money documenting extinctions.” Arguably, we should spend more resources ensuring that the ship stays afloat and is on course rather than perfecting technology to record its sinking.
openaire +2 more sources
The insect abdomen—a heartbeat manager in insects?
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2002Different possibilities of coordination between circulation, respiration and abdominal movements were found in pupae of Pieris brassicae, Tenebrio molitor, Galleria mellonella and Leptinotarsa decemlineata. Coordination principles depend on metabolic rate: the need to support circulation with abdominal movements appears only at higher metabolic rates ...
U, Tartes, A, Vanatoa, A, Kuusik
openaire +2 more sources
Science, 1927
These experiments would seem to prove that no special spiracles are used for inhaling and others used for exhaling, but rather that all are alike in this respect, as the abdomen expands air is taken in and as the body contracts the gases are exhaled.
openaire +2 more sources
These experiments would seem to prove that no special spiracles are used for inhaling and others used for exhaling, but rather that all are alike in this respect, as the abdomen expands air is taken in and as the body contracts the gases are exhaled.
openaire +2 more sources
Apoptosis, 2009
Developmental and tissue homeostasis is a delicate balance between cell proliferation and cell death. The activation of caspases, a conserved family of cysteine proteases, is a main event in the initiation and execution of programmed cell death. While caspases have been characterized from many organisms, comparatively little is known about insect ...
Dawn M, Cooper +2 more
openaire +2 more sources
Developmental and tissue homeostasis is a delicate balance between cell proliferation and cell death. The activation of caspases, a conserved family of cysteine proteases, is a main event in the initiation and execution of programmed cell death. While caspases have been characterized from many organisms, comparatively little is known about insect ...
Dawn M, Cooper +2 more
openaire +2 more sources
Journal of Insect Physiology, 2001
Insects exhibit a remarkable array of adaptations that allow them to handle more or less severe hypoxia associated with numerous aquatic and terrestrial habitats. We consider these habitats and then discuss physiological, behavioral and morphological mechanisms that facilitate insect life under oxygen deprivation.
W W., Hoback, D W., Stanley
openaire +2 more sources
Insects exhibit a remarkable array of adaptations that allow them to handle more or less severe hypoxia associated with numerous aquatic and terrestrial habitats. We consider these habitats and then discuss physiological, behavioral and morphological mechanisms that facilitate insect life under oxygen deprivation.
W W., Hoback, D W., Stanley
openaire +2 more sources
Putting the insect into the birch?insect interaction
Oecologia, 2003Leaf maturation in mountain birch (Betula pubescens ssp. czerepanovii) is characterized by rapid shifts in the types of dominant phenolics: from carbon-economic flavonoids aglycons in flushing leaves, via hydrolysable tannins and flavonoid glycosides, to carbon-rich proanthocyanidins (condensed tannins) in mature foliage.
openaire +2 more sources
Invasive alien insects and insect decline
Fil: Werenkraut, Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche.Rabitsch, Wolfgang +4 more
openaire +2 more sources
Biological Reviews, 1948
SummaryThe cuticle consists of a relatively soft and colourless endocuticle, hardened and darkened in its outer part in some places to form a rigid exocuticle, and a complex epicuticle made up of several layers.The endocuticle consists of polyacetylglucosamine (chitin) intimately associated with a characteristic protein (arthropodin). Perhaps these are
openaire +2 more sources
SummaryThe cuticle consists of a relatively soft and colourless endocuticle, hardened and darkened in its outer part in some places to form a rigid exocuticle, and a complex epicuticle made up of several layers.The endocuticle consists of polyacetylglucosamine (chitin) intimately associated with a characteristic protein (arthropodin). Perhaps these are
openaire +2 more sources