Environmental impacts of neonicotinoids outweigh crop yield benefits

Neonicotinoid use has increased rapidly in recent years, with a global shift toward insecticide applications as seed coatings rather than aerial spraying. While the use of seed coatings can lessen the amount of overspray and drift, the near universal and prophylactic use of neonicotinoid seed coatings on major agricultural crops has led to widespread detections in the environment (pollen, soil, water, honey).

Decline of bumble bees in northeastern North America

In this study, 150 years of Bombus records in the state of New Hampshire from the University of New Hampshire Insect Collection were examined. This allowed for changes in abundance and distribution to be tracked over time, with focus on species designated of greatest conservation need by NH Fish & Game Department. Floral records also provided insight into the diet breadth of these species, which may affect their vulnerability.

EFSA bestätigt das Risiko von Pestiziden für Insekten

Nach dem Glyphosat-Streit müssen sich Union und SPD wieder über Regeln für den Einsatz von Chemie auf dem Feld einigen. Am Mittwoch hat die Europäische Behörde für Lebensmittelsicherheit, Efsa, die Gefahr von drei Insektenvernichtungsmitteln für Bienen bestätigt. Voraussichtlich werden die Mitgliedstaaten der EU nun am 22. März über ein Verbot der Stoffe im Freiland abstimmen.

UK’s favourite wildlife species at risk of extinction

Some of Britain’s favourite wildlife is at risk of becoming extinct unless there is a new, 21st-century agricultural revolution, experts are warning. Species from hedgehogs to skylarks and birds of prey are being wiped out – in part by companies with vested interests in “destructive” factory farming, it was claimed on World Wildlife Day, which takes place today. The “alarming” declines in wildlife will threaten not just the richness of the planet but also our ability to grow food, according to the RSPB.

EFSA confirma que los neonicotinoides son peligrosos para las abejas y polinizadores silvestres

Rachel Carson escribió el 27 de septiembre de 1962 Primavera Silenciosa, (Silent Spring) que advertía de los efectos perjudiciales de los pesticidas en el medio ambiente -especialmente en las aves- sin saber que los polinizadores vitales para la biodiversidad y la alimentación serían uno de los más perjudicados en su libro ya culpaba a la industria química de la creciente contaminación.​ En septiembre del 2010 el Dr Toxicólogo Henk Tennekes publicó un articulo científico en una revista de toxicología, Siguió un libro….. “Un Desastre en Potencia”.

Immune suppression by neonicotinoids could be at the root of insect decline

Scientists have identified infectious diseases as a key driver of bee population decline and have shown for the first time the extent to which the diseases are shared with other pollinator groups, in research published this week. Researchers from Royal Holloway, University of London, Oxford University and Cornell University have shown that viruses that are harmful to honeybees are also present in hoverfly pollinators. The study suggests that hoverflies are exposed to the same diseases, and may move the infections around when they feed from the same flowers as the honeybees.

Neonicotinoïden veroorzaken bijensterfte op de lange termijn

Voor het eerst is de afname van Engelse wilde bijen gekoppeld aan het gebruik van controversiële neonicotinoïden. Dat zijn pesticiden waarmee boeren hun koolzaadolieplantages beschermen tegen ongedierte. Aan het zaadje van een koolzaadplant voegt de boer neonicotinoïden toe. Als de plant is opgegroeid en opgebloeid, zijn deze stoffen over de volledige koolzaad verspreid, dus ook in de bloemen. Hierdoor krijgen de beestjes die van de nectar snoepen de pesticiden binnen.

Evidence for decline in eastern North American bumblebees

Bumblebees (Bombus spp.) have been declining rapidly in many temperate regions of the Old World. Despite their ecological and economic importance as pollinators, North American bumblebees have not been extensively surveyed and their conservation status is largely unknown. In this study, two approaches were used to determine whether bumblebees in that region were in decline spatially and temporally.

Bumble Bee Queens Slower to Start Colonies After Minimal Neonic Exposure

Spring is an important period for bumble bees, as that’s when new colonies get their start. When a solitary bumble bee queen emerges from hibernation, she initiates a nest and then does the foraging work herself, until her first offspring hatch, develop into workers, and relieve her from all duties but egg laying. Thus, should any harm befall the queen in this early period, it can have ripple effects on the health of the developing colony.

Drastic decline of New Hampshire’s bumble bee population over the last 150 years

In the first long-term study of New Hampshire’s bumble bee population, researchers with the New Hampshire Agricultural Experiment Station at the University of New Hampshire have found three of the state’s most important bumble bee species have experienced drastic declines and range constriction over the last 150 years, with a fourth bee also in significant decline.