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3542. Cold hardiness in diapause and non-diapause larvae of the summer fruit tortrix, Adoxophyes orana (Lepidoptera: Tortricidae)

Creator:
Milonas, Panagiotis G. and Savopoulou-Soultani, Mathilde
Format:
print, text, and regular print
Type:
article, bibliography, conference publication, model:article, and TEXT
Subject:
Third European Workshop of Invertebrate Ecophysiology (1998 : Birmingham, Česko), zoologie, fyziologie živočichů, ekofyziologie, hmyz, Tortricidae, Adoxophyes orana, teplotní biologie, odolnost k chladu, diapauza, aklimatizace, 591.5, 061.3, and 595.2/.7
Language:
English
Description:
Cold hardiness of larvae of the summer fruit tortrix moth, Adoxophyes orana (Fischer von Rosslerstamm) (Lepidoptera: Tortricidae) was examined in the laboratory. Supercooling point of field collected larvae increased significantly from a mean value of -23.9°C in February 1998 to -16.9°C in June 1998. Mean supercooling points for laboratory diapause and non-diapause larvae were -20.7°C and -17.2°C respectively. Short period of acclimation (10 days at 0°C) significantly decreased supercooling point to -24.7°C for laboratory diapause larvae. Acclimation for 12 days at 5°C decreased supercooling point to -19.4°C for non-diapause larvae. Pre-freeze mortality for diapause and non-diapause larvae was also studied. Constant exposure of diapause larvae at -5°C resulted in high mortality (63.1%) after a period of 30 days. in contrast, only 6 days at -5°C were sufficient to cause 100% mortality of non-diapause larvae. Mortality of non-diapause larvae reached 100% after 12 and 18 days at 0 and 5°C respectively. The importance of these findings for the overwintering strategy of A. orana is discussed., Panagiotis G. Milonas, Mathilde Savopoulou-Soultani, and Lit
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3543. Cold hardiness of larvae of Dendrolimus tabulaeformis (Lepidoptera: Lasiocampidae) at different stages during the overwintering period

Creator:
Shao, Yuying, Feng, Yuqian, Tian, Bin, Wang, Tao, He, Yinghao, and Zong, Shixiang
Format:
print, počítač, and online zdroj
Type:
model:article and TEXT
Subject:
motýli, larvy, butterflies, larvas, Lepidoptera, Lasiocampidae, Dendrolimus tabulaeformis, supercooling point, cryoprotectants, cold hardiness, 2, and 59
Language:
English
Description:
The Chinese pine caterpillar Dendrolimus tabulaeformis is an important destructive leaf borer in boreal coniferous forests in China. This species overwinters in the larval stage. Changes in supercooling capacity and physiological-biochemical parameters of D. tabulaeformis larvae from a natural population were evaluated at different stages during the overwintering period. Cold hardiness of overwintering larvae collected in January was significantly greater than that of larvae collected in other months. January larvae survived for 15 days at -10°C and for approximately 2 days at -15°C. By contrast, larvae collected in September survived for no more than 4 h at -5°C and those in November and March no more than 1 day at -15°C. Supercooling point gradually decreased from -5.9 ± 0.3°C in September to a minimum of -14.1 ± 1.0°C in November, then gradually increased to the original value with the advent of spring. Water content gradually decreased from September to November, remained at approximately 74.5% until March and then gradually increased to levels similar to those in September. The lipid content gradually decreased from September to November, remained stable at approximately 3.2% until March and then gradually increased to levels similar to those in September. Glycogen content increased to a peak in November and then decreased. The concentrations of several metabolites showed significant seasonal changes. The most prominent metabolite was trehalose with a seasonal maximum in November. Glucose levels were highest in January and then gradually decreased until in May they were at levels similar to those in September. Glycerol levels remained relatively stable during winter but increased significantly in May. This study indicates that D. tabulaeformis is a freeze-avoidant insect. Larvae increase their supercooling capacity by regulating physiological-biochemical parameters during overwintering., Yuying Shao, Yuqian Feng, Bin Tian, Tao Wang, Yinghao He, Shixiang Zong., and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3544. Cold tolerance strategy of the freeze-intolerant chrysomelid, Aulacophora nigripennis (Coleoptera: Chrysomelidae), in warm-temperate regions

Creator:
Watanabe, Masahiko and Tanaka, Kazuhiro
Format:
print, text, and regular print
Type:
article, bibliography, conference publication, model:article, and TEXT
Subject:
Third European Workshop of Invertebrate Ecophysiology (1998 : Birmingham, Česko), zoologie, fyziologie živočichů, ekofyziologie, hmyz, Chrysomelidae, Aulacophora nigripennis, teplé oblasti, hibernace, teplotní stresy, chlad, tolerance k chladu, netolerance k chladu, netolerance k mrazu, myo-inositol, metabolismus myo-inositolu, 591.5, 061.3, and 595.2/.7
Language:
English
Description:
We investigated the physiological adaptations for winter survival in a freeze-intolerant chrysomelid, Aulacophora nigripennis, in warm-temperate regions. The adults showed a decreased supercooling point (SCP), increased chill tolerance and high myo-inositol content during winter. Chill tolerance at 0°C appears to be a more suitable indicator of their cold hardiness than SCP because they die at 0°C without freezing and normally an not exposed to subzero temperatures below their SCP., Masahiko Watanabe, Kazuhiro Tanaka, and Lit
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3546. Collage as the Principle of Mythological Thinking and Postmodern Music

Creator:
David Kozel
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
hudební estetika, musical aesthetics, hudební kompozice, composition (music), mytologie, mythology, 78.01, 78.02, 25, and (048.8)
Language:
Czech
Description:
Studie Davida Kozla je věnována formě hudební koláže ve vztahu k princpipu mytologického myšlení, stejně jako jejího použití v postmoderní hudební tvorbě., The term neo-mythologism can be used as an interpretative approach to reflect the new 20th-century music paradigm, which helps to explain changes in the understanding of basic structural elements of myth and music. The study identifies certain possible correlations between mythological thinking and music by analysing the concept of collage (bricolage). The underlying theoretical concept employed is Claude Lévi-Strauss’ structural anthropology as proposed in La Pensée Sauvage (1962). Collage is viewed as a manifestation of neo-mythologism and as a narrative in the postmodern musical discourse, which is accompanied by changes in the understanding of the essence of the musical matter and compositional techniques of composers. The compositional treatment of several different layers of the musical structure within a musical collage with a view to conveying a new meaning is in principle akin to how meaning is generated in mythological thinking through the combination of various materials., David Kozel., Rubrika: Studie, and České resumé na s. 192, anglický abstrakt na s. 181.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:private

3547. Collagen synthesis, nitric oxide and asymmetric dimethylarginine in diabetic subjects undergoing hyperbaric oxygen therapy

Creator:
Gurdol, F., Cimsit, M., Oner-IYidogan, Y., Kocak, H., Sengun, S., and Yalcinkaya-Demirsoz, S.
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, kolagen, oxid dusnatý, diabetická noha, collagen, nitric oxide, diabetic foot, hyperbaric oxygen, asymmetric dimethylarginine, 14, and 612
Language:
English
Description:
The main pathological condition in patients with impaired wound healing is diabetes mellitus. These patients have significantly low circulating nitric oxide (NO) levels because the stimulatory action of insulin on NO synthesis is absent. Additionally, asymmetric dimethylarginine (ADMA), an inhibitor of NO synthase, is increased owing to the generation of oxidative stress. NO was thought to contribute to wound healing. Hyperbaric oxygen (HBO) treatment is generally used in order to accelerate the healing of wounds. The aim of this study was to determine the changes in plasma procollagen type I and III N-terminal peptides (PINP and PIIINP), total nitrite/nitrate (NOx) and ADMA levels; and to evaluate their relation to healing during the HBO treatment of foot ulcers. Data obtained from 18 diabetic patients before and after the HBO therapy were compared statistically by the Wilcoxon test. NOx was increased in 11 and ADMA was decreased in 12 patients following HBO treatment. Both PINP (32.6±29.4 μg/l vs 44.3±33.4 μg/l) and PIIINP (6.97±3.01 μg/l vs 7.92±2.49 μg/l) were significantly increased (p<0.05). Progressive reductions were observed in wound areas, as assessed by the digital wound imaging. In 12 patients, wounds healed by 50 % or higher; whereas only two subjects had minimal improvements (15 % or less healing). The duration of diabetes correlated negatively with wound healing (r = -498, p<0.05). This study suggests that increased collagen synthesis is associated with wound healing during hyperbaric oxygen therapy. Nitric oxide generation may also contribute to the healing process., F. Gurdol ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3549. Colloquium sepulcrale iam septimum

Creator:
Jiří Roháček
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Kulturní památky historického období obecně, sepulkrální památky, interdisciplinární aspekty, mezinárodní konference, sepulchral monuments, interdisciplinary aspects, international conferences, 8, and 904
Language:
Czech
Description:
Jiří Roháček.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

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