Overige insecten

I colossi dell’agrochimica tornano all’assalto di Bruxelles per salvare i loro prodotti a base di neonicotinoidi. Nel 2013 l’Agenzia europea per la sicurezza alimentare (EFSA) aveva puntato il dito contro il thiamethoxam (prodotto da Syngenta), il clothianidin e l’imidacloprid (entrambi prodotti da Bayer) nel caso di applicazione spray sulle colture. L’Agenzia Ue con sede a Parma aveva poi concluso in uno studio del 2015 che «sono stati identificati gravi rischi o non è stato possibile escluderli».

The peregrine falcon (Falco peregrinus) is one of nature's most awe-inspiring predators. Once an isolated cliff-dwelling hunter, these birds are now a high-flying slice of the natural world visible right outside our condos and skyscrapers. But 50 years ago, Canadian peregrine falcons were on the ropes. Once-common, their numbers had plummeted as a result of widespread DDT use. In the span of 10 years, it disappeared entirely from Ontario. It only began to creep back, bird by bird, in 1990.

Wildflowers are important as just one species can support a whole ecosystem from fungi and invertebrates, through insect-eating birds and small mammals, to birds of prey. They are key habitats for pollinators such as bees and butterflies, whose numbers have seen huge declines in recent years. There are almost 251,000 acres of rural road verges across the country that are home to 703 species of wild plants – 87 of which are facing extinction. Charity Plantlife says local councils are “cutting too much and too early”, depriving flowers of the chance to seed and reproduce.

Rund um den kleinen Ort Billafingen, wo Peter Berthold, einer der bekanntesten Vogelexperten Deutschlands wohnt, scheint die Welt noch in Ordnung zu sein: Malerisch umgeben Wiesen, Äcker und kleine Wälder den Ort im Bodenseekreis. Doch selbst hier zwitschert es immer weniger von Bäumen und Hecken – denn auch in dieser Gegend nimmt das globale Vogelsterben seinen Lauf. Seit Beginn des 19. Jahrhunderts sind 80 Prozent der Vögel in Deutschland verloren gegangen, das hat Berthold für sein neuestes Buch recherchiert.

In the wake of ongoing debate by experts, neonicotinoid pesticide, imidacloprid, has been proven a threat to the survival of bats in Taiwan after last year being confirmed as harmful to bees by the Environmental Protection Agency of the United States. A research team headed by Wu Chung-hsin (吳忠信), professor in life sciences at National Taiwan Normal University, found that bats feeding on imidacloprid-tainted insects were unable to fly along learned paths, as a result of which they often "got lost" while out hunting.

To examine the binding of Bacillus thuringiensis δ-endotoxins, CryIAa, CryIAb, and CryIAc, to Lymantria dispar (gypsy moth) brush border membrane vesicles (BBMV), saturation kinetic analyses were conducted according to a two-step interaction scheme for δ-endotoxin binding to BBMV, rather than the one-step reversible binding presented in prior reports. So far, all published binding studies known to us have used the Scatchard equation or the Hill equation, which analyzes binding parameters assuming a one-step reversible interaction (Reaction 1): BS + T ↔ BS*T.

Wenn Frank Baum aus Staufen in seinen Garten ging, fehlte es ihm an bunter Gesellschaft. Die Schmetterlinge machten sich rar. Den kleinen Fuchs oder das Tagpfauenauge suchte der Biochemiker vergeblich. Jetzt hat Baum sich zusammen mit anderen Naturschützern an die Landesregierung gewandt, um etwas gegen das Insektensterben zu unternehmen. Sie wollen erreichen, dass bestimmte Pflanzenschutzmittel dauerhaft verboten werden. Ansonsten befürchten sie einen Frühling ohne Schmetterlinge.

In Britain, Syngenta has built a network of academics and regulators, even recruiting the leading government scientist on the bee issue. In the United States, Syngenta pays academics like James W. Simpkins of West Virginia University, whose work has helped validate the safety of its products. Not only has Dr. Simpkins’s research been funded by Syngenta, he is also a $250-an-hour consultant for the company. And he partnered with a Syngenta executive in a consulting venture, emails obtained by The New York Times show. Dr. Simpkins did not comment.

Zu einer ganz besonderen Bescherung rät der NABU allen Naturfreunden rund um den Jahreswechsel: Sie sollen sich informieren, was sie im kommenden Jahr im eigenen Wirkungsbereich – im Garten, Kleingarten, Park, auf dem Schulhof, dem Vereins- oder Betriebsgelände – für Insekten tun können. Zahlreiche Anregungen dazu habe der NABU in einem neuen, umfangreichen Info-Paket zusammengestellt, teilt Bezirksgeschäftsführer Rüdiger Wohlers mit.

O F F E N E R B R I E F
an den Ministerpräsidenten von Baden-Württemberg, Herrn Winfried Kretschmann sowie an die zuständigen Minister der Landesregierung
aus Anlass des drastischen Rückgangs unserer Insektenpopulationen

Sehr geehrter Herr Ministerpräsident,
sehr geehrter Herr Minister Hauk, sehr geehrter Herr Minister Untersteller,