Image Credit: Hedera Baltica, CC BY-SA 2.0, Image Cropped
Invasive alien species as an environmental stressor and its effects on coping style in a native competitor, the Eurasian red squirrel (2022) Santicchia et al., Hormons and Behaviour, https://doi.org/10.1016/j.yhbeh.2022.105127
We know that human activities can cause enormous stress for local species, and the introduction of invasive species is one of the most harmful stressors on a global basis. We know that new, harmful species can cause local extinctions, but how does their introduction affect the locals on a behavioural level?
Grey squirrels were introduced to Europe last century and have been spreading since, displacing the native red squirrels and wiping them out in many areas. This week’s authors wanted to know exactly how red squirrels’ behaviour changed when the grey squirrels were introduced, by looking in detail at the behaviour of red squirrles in both invaded and non-invaded areas, and seeing if they could see evidence of these changes in the expression of hormones (more on this in Did You Know).
Dr. Erica McAlister of the British Natural History Museum recently released The Secret Life of Flies, an exploration of the more fascinating side of the fly (Image Credit: Erica McAlister, CC BY-SA 2.0, Image Cropped)
The Norwegian ForBio conference occurs once a year, and brings together a large collection of biosystematics experts from the Nordic countries. Biosystematics being a bit outside my field, it’s not something I’d generally attended, however this year it was 250m away from my office, so I considered attending. But what tipped me over the edge was the presence of Dr. Erica McAlister of the British Natural History Museum, who in late 2017 published The Secret Life of Flies, a brilliant expose on one of nature’s traditionally less sympathetic taxa.
Erica’s talk was fascinating, replete with stories of lost artifacts, mosquito sex and David Attenborough. Afterwards, I got the chance to sit down and chat with Erica about everything from the problem with honeybees, to the beauty of mosquitoes to issues with a certain Jeff Goldblum character.
Anne-Sverdrup-Thygeson has made it her life’s mission to fascinate the world – with insects (Image Credit: Håkon Sparre, CC BY 2.0, Image Cropped)
The Internet has been set abuzz (pun intended) lately by rumours of the Insect Apocalypse. And whilst the concept itself is depressing, it’s worth smiling at the fact that the public has finally started to take an interest in the ecological plight of a group of animals until recently ignored whenever possible. After all, insects include, wasps, cockroaches, bees and myriad other ‘nasties’.
Professor Anne Sverdrup-Thygeson is one academic/author who has made it her life’s mission to turn people around on insects, which includes her recent Brage Prize nominated book “Terra Insecta”. Sam Perrin and I sat down at the recent Norwegian Ecological Society Conference to ask Anne about why people have an aversion to creepy crawlies, how scientific communication helps in her mission, and whether or not the planet could survive the eradication of the mosquito.
The Eastern Oyster, a species which has a high potential to spread throughout Norwegian waters, but little known ecological effect (Image Credit: James St. John, CC BY 2.0, Image Cropped)
Last week I posted an interview with Mark Davis, an invasion ecologist who has urged caution when rushing to eliminate invasive species from an ecosystem. Whilst I didn’t agree with absolutely everything Mark said, he makes some very important points about the language around invasive species and our understanding of them.