n July this year, the Seattle Times ran a story on an orca called Tahlequah – she was pregnant, again. And just yesterday, she gave birth. The story is particularly noteworthy because a couple of years ago, Tahlequah also bore a calf, which died, and she then carried the dead baby on her nose for […]
Continue readingImage source: David P. Hughes, Maj-Britt Pontoppidan – http://www.plosone.org/article/showImageLarge.action?uri=info:doi/10.1371/journal.pone.0004835.g001 CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=17917778 Back in 2010 I wrote about the strange tale of the zombie ants, which do the bidding of their fungal overlords. (They’re not an isolated example; a range of parasites change their hosts’ behaviour. See here and here for example – though as you’ll find, […]
Continue readingI’ve learned quite a bit about spiders over the years. (And I have never been able to understand the “burn it with fire!” some folks take towards these 8-legged creatures.) For example, it turns out that some spiders actively hunt fish, while others are vegetarian! Then, late last year, I came across a couple of […]
Continue readingPeople tend to think that plants don’t do much from day to day – certainly when I asked my first-year students at the start of the course, they were far more interested in animals than in plants. Poor plants! But then, to the casual eye I guess they’re fairly static creatures 🙂 However, it turns […]
Continue readingMy interest in kākāpō way back in my honours year at uni: a guest speaker told us that as far as anybody knew, the last remaining birds were a few males, somewhere in Fiordland. I remember feeling that that sounded really sad – those lonely males booming for females who never came. Shortly after that, […]
Continue readingA substantial proportion of the CO2 we release into the atmosphere, via burning fossil fuels, ends up dissolved in the ocean. The impact of this is a change in the ocean’s acidity: the pH drops. According to the Smithsonian, oceans have become substantially more acidic over the last 200 years (the period of the Industrial […]
Continue readingThe internet, while it can be a godsend if you need to find something out (gotta love google maps for directions), can also be a wretched hive of wrongness & misinformation. That misinformation can take many forms, but when it comes to 1080 it’s clear that those opposed to NZ’s use of this chemical firmly […]
Continue readingPolyploidy – the duplication of chromosome sets – is relatively common in plants, and can result in the development of new species. (Many modern food crops are polyploids.) It’s much less common in animals, although found in some frogs & salamanders (amphibians) & leeches (annelids). So it was with a mix of excitement, surprise, & […]
Continue readingTomtits and robins were the focus of the first question in the 2016 Schol Bio paper. Specifically, Chatham Island tomtits and robins, which are found only on the Chathams. While at one point they were common and widespread on the islands, the tomtit is classified as nationally endangered, while the black robin is nationally critical […]
Continue readingLike probably everyone reading this, I have always thought that spiders are carnivorous, sucking the precious bodily fluidsA from their prey. I mean, those fangs! And I was wrong, for it seems that some spiders eat some plant material alongside their liquid meals – and some are almost fully vegetarian. A just-published paper (Painting, Nicholson, […]
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