Overige insecten

Birds have been dying as insects retreat from the cold

Bird watchers say a cold snap in late spring left many birds without their usual food source, resulting in the deaths of many baby birds. “Baby birds and nesting birds rely on insects and other invertebrates to feed their young and as a high source of protein for nesting birds. During cold temperatures like that, the bugs go dormant, they retreat under barks of trees, they just become harder to find,” said Dawn Hewitt, editor of Bird Watcher's Digest. Lacking a proper food source, many adult birds and especially baby birds became malnourished.

Henk Tennekes spiega le sue idee sul deragliamento della tossicologia

In un'intervista con i sottotitoli inglesi, il tossicologo Henk Tennekes spiega le sue idee sul deragliamento della tossicologia. È dell'opinione che, in particolare, la tossicità cumulativa dei pesticidi nell'ambiente durante la procedura di autorizzazione non sia sufficientemente studiata e quindi spiega la massiccia mortalità degli insetti negli ultimi anni.


Le toxicologue Henk Tennekes explique ses idées sur le déraillement de la toxicologie

Dans une interview avec des sous-titres anglais, le toxicologue Henk Tennekes explique ses idées sur le déraillement de la toxicologie. Il est d'avis que, notamment, la toxicité cumulée des pesticides dans l'environnement lors de la procédure d'autorisation n'est pas suffisamment étudiée et explique ainsi la mortalité massive des insectes ces dernières années.

The toxicologist Henk Tennekes on the derailment of toxicology

In an interview with English subtitles, the toxicologist Henk Tennekes explains his ideas about the derailment of toxicology. He is of the opinion that the cumulative toxicity of pesticides in the environment is not sufficiently investigated during the authorization procedure and explains the massive insect mortality in recent years.


Der Toxikologe Henk Tennekes: zur Entgleisung der Toxikologie

In einem Interview mit englischen Untertiteln erklärt der Toxikologe Henk Tennekes seine Ideen zur Entgleisung der Toxikologie. Er ist der Ansicht, dass insbesondere die kumulative Toxizität von Pestiziden in der Umwelt während des Zulassungsverfahrens nicht ausreichend untersucht wird, und erklärt damit die massive Insektensterblichkeit in den letzten Jahren.


Henk Tennekes over de ontsporing van de toxicologie

In een interview met Engelse ondertiteling zet de toxicoloog Henk Tennekes zijn denkbeelden over de ontsporing van de toxicologie uiteen. Hij is van mening dat met name de cumulatieve toxiciteit van bestrijdingsmiddelen in het milieu bij de toelatingsprocedure onvoldoende wordt onderzocht en verklaart daarmee de massale insectensterfte van de laatste jaren.


Shifts in food plant abundance for flower‐visiting insects between 1900 and 2017 in the canton of Zurich, Switzerland

We compared the current (2012–2017) abundances of food plants of different groups of flower‐visiting insects to that of 1900–1930 in the canton of Zurich, Switzerland. Comparisons were done separately for different vegetation types, flowering months, and groups of diurnal flower‐visiting insects, such as bees, bumblebees, wasps, butterflies, hoverflies, flies, and beetles. We found a general decrease in food plant abundance for all groups of flower‐visiting insects and in all vegetation types except ruderal areas.

Insektensterben reduziert die Häufigkeit der Netzspinnen

Die rund 48.400 bekannten Spinnenarten gehören weltweit zu den wichtigsten insektenfressenden Tieren auf der Erde. Eine Gruppe davon, die Kreuzspinnen, bauen auffällige Radnetze. Als die vermutlich bekannteste und bisher sehr verbreitete Kreuzspinnenart in Europa gilt die Gartenkreuzspinne Araneus diadematus. Ihre bevorzugten Lebensräume sind neben Hausgärten Parks, Friedhöfe, Hecken, Waldränder und Waldlichtungen.

Swift return to Argyll

Swifts are slightly larger than swallows and have an all dark plumage with only a short forked tail. They feed on flying insects and spend most of their life in the air (including when they sleep), usually coming down to earth to breed. They are fast fliers often chasing one another over buildings when they give a screeching call.

Swifts arrive back in Argyll in early May and breed in some of the towns, villages and other buildings in Argyll. They spend around three months in Argyll, departing in early-mid August, to their wintering grounds in Africa.

Insect diversity and insect abundances are higher in organic farmland

The number of insect species and insect abundances decreased severely during the past decades over major parts of Central Europe. Previous studies documented declines of species richness, abundances, shifts in species composition, and decreasing biomass of flying insects. In this study, we present a standardized approach to quantitatively and qualitatively assess insect diversity, biomass, and the abundance of taxa, in parallel.