Results 101 to 110 of about 1,996 (194)

Factors terminating ovarian arrest in long-winged females of a flightless bug, Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae)

open access: yesEuropean Journal of Entomology, 2007
The aim of the present study was to determine the factors that are involved in termination of a non-diapause type of ovarian arrest in the adult macropterous females of a flightless bug, Pyrrhocoris apterus (L.), reared under a long-day (18L : 6D ...
Radomír SOCHA
doaj   +1 more source

Physiological responses to temperature in Merizodus soledadinus (Col., Carabidae), a subpolar carabid beetle invading sub-Antarctic islands

open access: yes, 2016
International audienceRecent human activities and rising air temperature have increased the vulnerability of sub-Antarctic islands to alien species. At the Kerguelen Islands, the predaceous ground beetle Merizodus soledadinus is the only invasive insect ...
Laparie, M., Renault, D
core   +3 more sources

Studies on assimilation, mobilization, and transport of lipids by the fat body and haemolymph of Pyrrhocoris apterus [PDF]

open access: yes, 1969
The incorporation and release of lipid in vitro by the fat body of adult female Pyrrhocoris apterus, and the lipid content and composition of the haemolymph were examined in relation to the cyclic growth and diminution of the fat body and the probable ...
Amenta   +39 more
core   +1 more source

Photoperiod, diapause and cold-hardiness

open access: yesEuropean Journal of Entomology, 2004
Great progress has recently been made in cryobiology. One field, however, has been neglected: the temporal sequence of the effects of photoperiod and temperature, and their relative importance in cold hardening.
Magdalena HODKOVA, Ivo HODEK
doaj   +1 more source

Pigment composition of the bright skin in the poison toad, Melanophryniscus rubriventris (Anura: Bufonidae) from Argentina [PDF]

open access: yes, 2017
The determination of the basis of skin colour is important to better understand the evolutionary and ecological relevance of colour variation in aposematic species.
Bonansea, Maria Ines   +2 more
core  

Relationships between locomotor activity, oxidative damage and life span in males and females of the linden bug, Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae)

open access: yesEuropean Journal of Entomology, 2013
In this study we addressed a question of whether experimental manipulations that increase life span also reduce physical activity and molecular oxidative damage.
Marcela BURICOVA, Magdalena HODKOVA
doaj   +1 more source

Evolution of mutualistic microbiome in firebugs and cotton stainers (Hemiptera; Pyrrhocoridae): characterizing the role of bacterial symbionts in diversification and niche expansion of Pyrrhocoridae [PDF]

open access: yes, 2015
The gut microbial symbionts have had an enormous impact on the evolution of animals. These symbionts have been well documented to impart a vast repertoire of beneficial functions that significantly contribute to the fitness of their insect hosts ranging ...
Sudakaran, Sailendharan
core  

Still-Leben Ruhrschnellweg - eine floristisch-faunistische Kartierung der A40 in Bochum [PDF]

open access: yes, 2012
Am 18. Juli 2010 fand im Ruhrgebiet das Projekt "Still-Leben Ruhrschnellweg" im Rahmen der Veranstaltung zur Kulturhauptstadt 2010 statt. Für einen Tag war die A40 zwischen Dortmund "Märkische Straße" und Duisburg-Häfen für den Kraftfahrzeugverkehr ...
Buch, Corinne, Jagel, Armin
core  

Addicions i correccions al catàleg dels heteròpters de Catalunya (Insecta, Hemiptera, Heteroptera) [PDF]

open access: yes, 2008
L'any 2004, J. Ribes, A. Serra i M. Goula van publicar el Catàleg dels heteròpters de Catalunya, on se censaren 1.037 espècies repartides en 36 famílies.
Gessé Solé, Francesc   +4 more
core  

Radiācijas ietekme uz sarkanblakšu Pyrrhocoris apterus fluktuālo asimetriju

open access: yes, 2020
The level of environmental radiation has an effect on the development of animals. Measuring fluctuating asymmetry is a comparatively new method, that is considered to be effective in determining environmental stress. The aim of this study is to measure fluctuating asymmetry of red firebugs collected from territories with various intensities of ...
openaire   +1 more source

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