Results 91 to 100 of about 2,017 (207)

Los estudios morfológicos en la teoría de la determinación cromosómica del sexo : 1880-1912 [PDF]

open access: yes, 2003
En el presente trabajo se analizan las investigaciones morfológicas comenzadas a finales del siglo XIX alrededor del tema de la determinación del sexo, hasta el descubrimiento de cromosomas sexuales y la formulación de la teoría de la determinación ...
Delgado Echevarría, Isabel
core   +2 more sources

Investigation of host-symbiont-parasite interactions using the African cotton stainer insect (Dysdercus fasciatus) [PDF]

open access: yes, 2019
Symbiotic associations are ubiquitous in nature and can extend along a dynamic continuum from mutualism to parasitism. In mutualism, the interacting organisms benefit from each other while in parasitism, one partner benefits and the other is harmed. Here,
Onchuru, Thomas Ogao
core   +1 more source

Изменчивость биоиндикационных признаков клопа-солдатика (Pyrrhocoris apterus L.), обитающего на территории расположения опытно-экспериментальной установки по производству лизина в Шебекинском районе Белгородской области [PDF]

open access: yes, 2012
Приведен сравнительный анализ информационно-значимых показателей индикационных признаков клопа-солдатика из популяций, испытывающих разный уровень антропогенной нагрузки.
Батлуцкая, И. В.   +3 more
core   +1 more source

A damping circadian clock drives weak oscillations in metabolism and locomotor activity of aphids (Acyrthosiphon pisum) [PDF]

open access: yes, 2017
Timing seasonal events, like reproduction or diapause, is crucial for the survival of many species. Global change causes phenologies worldwide to shift, which requires a mechanistic explanation of seasonal time measurement.
Arrazola Sastre, Alazne   +4 more
core   +3 more sources

Decreased mating propensity of macropterous morph in a flightless wing-polymorphic insect, Pyrrhocoris apterus (Heteroptera)

open access: yesEuropean Journal of Entomology, 2004
The effect of wing length (brachyptery and macroptery) on mating activity was investigated in adult males and females of a flightless wing-polymorphic insect, Pyrrhocoris apterus (L.).
Radomír SOCHA
doaj   +1 more source

Red list and checklist of the true bugs (Heteroptera) of Berlin [PDF]

open access: yes, 2018
Es wird eine Checkliste und Rote Liste der Wanzen (Insecta: Heteroptera) Berlins vorgelegt. Die Liste umfasst 502 Wanzenarten, die gegenwärtig in Berlin vorkommen oder die seit Mitte des 19. Jahrhunderts wenigstens einmal hier gefunden wurden.
Burghardt, Gerhard, Deckert, Jürgen
core   +1 more source

Behavioural Effects of Temperature on Insects [PDF]

open access: yes, 1961
Author Institution: Department of Entomology, University of ...
Abdullah, Mohammad
core  

Do long- and short-winged adult females of the bug Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae) differ in lifespan and reproductive capacity?

open access: yesEuropean Journal of Entomology, 2013
In the present study we tested whether long-winged (macropterous) and short-winged (brachypterous) adult females of the firebug Pyrrhocoris apterus (L.) differ in their reproductive capacity and length of life.
Radomír SOCHA
doaj   +1 more source

Palaeoptera infraclass and Neoptera infraclass of the Hemimetabola insects in the Kivertsi National Park «Tsumanska pushcha»: preliminary studies. [PDF]

open access: yes, 2019
Робота відображає підсумки першого вивчення Ephemeroptera, Odonata, Hemiptera, Mantodea, Orthoptera, Dermaptera комах в межах Ківерцівського національного природного парку «Цуманська пуща» – унікальної природної пам’ятки на північному-заході України ...
Sukhomlin, Kateryna B.   +5 more
core  

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