Carnivorous plant links

Lots of carnivorous plant news!

  • The description of a new species of Nepenthes from the Phillipines hit the news – it’s called N. attenboroughii (after Sir David) . One of the discoverers wrote the Tepui book I mentioned a while back.

attenboroughii

*

  • Harvard’s Aaron Ellison and UVM’s Nicholas Gotelli are studying the ecosystems that function within sarracenia pitchers.

“You’ve got four or five trophic levels in a pitcher plant, just like you’ve got four or five trophic levels in a lake,” said Ellison.

Fly larvae are the top-level predator in the pitcher, the analogues of terrestrial tigers or wolves. They’re what ecologists call a “keystone” species, who control the abundance every other species, but require a habitat of sufficient size to support those other creatures.

  • What’s the more important lure – color or sugar? Looks like color is irrelevant – at least in S. purpurea.

The results suggest that nectar production is the crucial factor in determining prey capture success. Real pitcher plants and pseudo-pitchers trapped nearly identical numbers of prey—357 versus 344 insects, respectively—while pseudo-pitchers without nectar caught far less. Both the real plants and pseudo-pitchers with nectar caught mostly ants. That’s good for the plants, as ants provide a much larger quantity of nitrogen than flies on a per-weight basis. The pseudo-pitchers without nectar caught mostly springtails, a different kind of arthropod.

Most significantly, the proportion of visible red area had no impact on prey capture.

Project updates

A quick status check on some of the irons I have in the fire.

  • The brackish tank is doing well. I’ve managed to persuade the archerfish to take Arowana Sticks in addition to crickets, so feeding is a lot easier. The scat will eat anything, but loves the sticks too. With summer and increased insolation, I’ve had some trouble with green water (single cell algae free-floating in the water column) – increasing the frequency of water changes has helped and I’m awaiting the delivery of  some Corbicula fluminea. I’m hoping that filter feeders in the tank will consume the last of the free algae. I’m growing out some black mangroves (Avicennia germinans) that Hydrophyte sent me (along with some other aquatic/emergent plants in an awesome care package) – not sure yet how I’m going to integrate the blackies into the brackish tank, but I have time to ponder while the mangroves embiggen.
  • Plants in the African stream tank have gotten over transplant shock. All the Anubias are sending out new roots, the Bollbitis are fiddleheading and the Java moss is sending out new growth as well.
  • The frog rack is fully populated. I moved my new banded leucs out of their quarantine tank into the middle level viv. They are quite shy; I’m hoping they get bolder as they get used to their new home and as the tank grows in and provides more cover.
  • The Mediated Toybee Tile project keeps simmering. Adhesive testing is pretty much done, though we may want to run some additional tests with this stuff (or just use it, give how nicely plain ol’ 5-minute stuff performed). I need to touch base with JY and CT and talk next steps as regards tile fabrication.

Ephemeral project – over and done with – baking with cherries from my little tree.

Transporter n

I just caught the male pepperi (they’ve been renamed) dropping the kids off at the pool.

*

In other critter news, hydrophyte inspired me to re-do the 29 gallon aquarium in the Design Student’s room. After losing all the inhabitants during the ice storm, I repopulated it with an African butterflyfish (Pantodon buchholzi) and a pair of upside-down cats (Synodontis nigriventis).  I’d seen a beautiful West African setup in Yoshino and Kobayashi’s The Natural Aquarium – combine that with a chapter on ‘The Aerial Advantage’ in Walstad’s Ecology of the Planted Aquarium and all I needed was a glimpse of hydrophyte’s ripariums to precipitate a new approach to the tank. I covered the back wall with plastic needlepoint grid and tied Java moss, Anubias and Bolbitis to it; I’m hoping the moss will expand to cover everything. I took the water level down to 10 inches – approx. the golden ratio point –  and I planted most everything so that it has the opportunity to grow emersed. We’ll see what happens.

*

I changed the filter set-up – without the filter change, the lower water level would have been a problem. I had been using an external hang-on-back style filter – I switched to a piece of foam the same size as the side of the aquarium with a small powerhead behind it. You can see the foam on the right side of the picture above.

I also snuck in a juvenile pair of Pelvicachromis sacrimontis – love those dwarf cichlids.

Yesterday was the three year birthday of the blog – I was too busy being a crazy natural historian to post, but thanks to all who have stopped by over the past 3 – it’s been fun (for me, at least).

Art, animals and wunderkammer

A week or so ago, I heard through the grapevine that the Shark Girl had been free diving with a group of Spotted Dolphins when a pod of Bottlenose Dolphins swept in and sexually aggressed the hell out of the smaller Spotteds (I’m deliberately not using the word I heard when we were talking about it – rape). I was, initially, really disturbed by the story – Flipper? John Lilly’s buddies? Thanks for all the fish? Rapists? WTF? My emotional reaction remains, but intellectually the story made me reflect on anthropomorphism and how little of the interior lives of other animals we understand. I have little doubt that inter-species aggression is not a good thing for the victim and perceiving it as a good thing would be profoundly maladaptive – beyond that, I’m not sure what to think. It sure wouldn’t be the first time that interspecies sex was used to express dominance – that foo-foo dog humping your leg is not in love with your shoes – the message is something else entirely.

With all this percolating in my head, I came across the work of Isabel Samaras in Juxtapoz. Her latest exhibition is called “Into the Woodz”:

I guess the theme is “Woodland Fabulous”!  When I started with the paintings of Goldilocks and Baby Bear I wanted to put in some nice solid visual clues so you’d know who they were without having to be told — there’s a bowl a porridge, some “Just Right” brand oats, and I gave Baby a big gold dookie rope necklace with a gold nameplate that said “BABY” on it.

I had been doing all these animal drawings in my sketchbook and had given some of them necklaces made from gold foil chocolate wrappers.

It suited him so well that I added a gold tooth with a diamond chip and a bling ring and Goldy got some huge gold doorknocker earrings.  I started pulling out old records I had from the 80s – Rob Base & D.J. E-Z Rock, EPMD, Salt-n-Pepa, Derek B, Kool Moe Dee, Sweet Tee and RunDMC.  Next thing I knew I was painting a porcupine with gold “love/hate” rings and a bunch of mockingbirds having a rap war sitting on a big boom box.

Mocking Box (The Rap Wars)

mocking_box

[I chose this one because I’ve heard of some urban mockingbirds greeting the dawn by imitating car alarms – life = art.  Dr. H]

*

The next piece was set deep among the trees and I just never left.  I became one of the girls who didn’t come out of the woods!  And I started to wonder ‘who else might be in there’?  Forests are wonderfully mysterious places—if you go to an intensely old one with massive moss covered trees you really do half expect to see a party of dwarves marching along or odd things springing out at you. They’re magical places.

In this case the animals are a bit “urbanized”—they’ve come into contact with human culture and taken a few things back into the woods with them. *

Some wonderful grist for my “we see our reflection in everything” mill. I don’t think it was specifically her intent (that’s why art doesn’t come with an instruction sheet), but the image of a squirrel with a rope and a gold nut really makes concrete for me the way stories and myth make animals avatars of certain human characteristics – for dolphins, the intelligent and peaceful  older brother. On a slight tangent, the painting on Isabel’s book calls another favorite artist to mind.

isabelbook

*

For folks who want more, Ms. Samaras has a blog and – as noted – a book.

-+-

When my Netvibes feed from Bibliodyssey popped up a new post with the title “A Cabinet of Natural Curiosities“, I couldn’t click over to Peacay’s place fast enough. In amongst the monitors and birds of paradise was this fellow:

*

The birds look reasonable and I recognise the Flying Dragon, but I think Albertus Seba may have gotten a feejee mermaid style gaff as well – I’m not sure there are any Revelation lizards crawling/squirming/dragging around – but I could be wrong. That hasn’t stopped folks from rendering the Beast in Lego (h/t Tom B.).

*

Let’s see… From delphine rape to the Whore of Babylon in Lego. Yep, that about covers it.

Nerdism

I realize this is not the sort of display behavior that brings all the girls to the yard lek, but I’m OK with that. I yam what I yam, as a famous mariner once said. From back to front – fancy Swiss aquarium filter foam scraps I’m saving for God knows what reason, an envelope full of Blubberbot, on top of the bot – a transmitter for (next thing down) a remote bownet release and finally an aquarium controller that is tasked with turning the lights over the vivaria on and off.

*

I’m messing around with a macro lens –  also trying out an extension tube that will allow me even closer shots, but I haven’t gotten as far as the extension yet. I need to work on depth of field; in olden times that meant shrinking the aperture/cranking up the f-stop with an attendant longer exposure time (if I remember correctly). Some thing may have changed as we switched from film to CCDs, but I’ll bet optics remain much the same.

A bamboo shoot

*

A tree peony

Busy, busy

I’ve been doing a lot of vivarium work – I plan on posting construction details within a month.

*

And quite a bit of dog training – Dinah’s retrieve work is coming along.

Additionally some (heterogeneous) reading:

Categorize this, NSA!

In the on deck circle – refreshing my soldering skills (is it true that US English is the only variant not to pronounce the ‘l’?). Component to printed circuit board soldering, that is.

Frog room move

I – along with some other local froggers – spent yesterday afternoon helping a friend move his frog room into the garagemahal. Many hands make light work – my mind boggles thinking about his last move – across town, with one other helper.

*

The cookout afterward was killer and I’m not particularly sore today. Win! Poor SportsDoc – his room is moved, but now he needs to organize/unpack/stow – our guesstimate was 20-30 manhours of fun.

Update – forgot to embed this short video of NH’s State Bird – the Black Fly. ‘Tis the season!