Results 131 to 140 of about 330 (181)
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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.
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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
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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.
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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.
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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
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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
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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.
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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
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Journal of Chemical Ecology, 1985
Forty-four species of insects were assayed for the presence of rhodanese, an enzyme generally considered to be responsible for the detoxification of cyanide. Rhodanese was found to be widely distributed in both adults and larvae and was not restricted to those species which encounter exogenous cyanide through feeding on cyanogenic plants. These results
S G, Beesley, S G, Compton, D A, Jones
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Forty-four species of insects were assayed for the presence of rhodanese, an enzyme generally considered to be responsible for the detoxification of cyanide. Rhodanese was found to be widely distributed in both adults and larvae and was not restricted to those species which encounter exogenous cyanide through feeding on cyanogenic plants. These results
S G, Beesley, S G, Compton, D A, Jones
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Biological Reviews, 1975
Summary1. The process of oosorption in insects is discussed with regard to the chronology of events which occur during resorption of oocytes and the role of their auxiliary cells.2. A theory of neuroendocrine control of oosorption is put forward, suggesting that cessation of juvenile hormone secretion is the most important factor leading to this ...
W J, Bell, M K, Bohm
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Summary1. The process of oosorption in insects is discussed with regard to the chronology of events which occur during resorption of oocytes and the role of their auxiliary cells.2. A theory of neuroendocrine control of oosorption is put forward, suggesting that cessation of juvenile hormone secretion is the most important factor leading to this ...
W J, Bell, M K, Bohm
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Journal of the Royal Microscopical Society, 1955
SYNOPSISA compressor for holding live insects under a dissecting microscope is described.
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SYNOPSISA compressor for holding live insects under a dissecting microscope is described.
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