Friday, January 14, 2022

Springtails, not springing

The weather was better today and I was able to collect a few leaf and Usnea lichens on Douglas fir twigs. I've been wanting to get a closer look at the lichens, to try to get a better understanding of their varied structures, looking at them under my little microscope.

I am easily side-tracked. The leaf lichens were crawling with tiny beasties; flies, worms, baby sowbugs, and several species of springtails. Most were too busy for my slow focusing with the microscope, but a few globular springtails were sleepy.

The globulars are the cutest of all the six-legged critters. This first one was hiding in the bottom of a birds' nest fungus.

Collembola, Dicyrtoma sp. The circle of lights are from the microscope.

Getting a bit closer in.

Full side view. He's carrying a drop of water in his mouthparts. He dropped it soon after.

Two more, on a wet piece of bark.
And one walking over one of the worms. The worm is about 1 cm. long.

Watching the springtails live, I could see that the pattern on their abdomens constantly shifted back and forth, as if a small light was moving inside. Heartbeat or breathing or digestion?

The springtails are about 2 mm long. But they are giants compared to this other critter I found:

Very tiny. Maybe as long as a springtail's leg. By the mouthparts in front, it could be some variety of mite. Or not.

When I was done, I took them all out to the rainy garden.

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Hoy no llovió, y pude encontrar unas ramitas caídas de abeto de Douglas con sus líquenes; líquenes foliosas y del género Usnea. He estado buscando líquenes para mirarlos bajo el microscopio para lograr tal vez un mejor conocimiento de sus variadas estructuras.

Me distraigo facilmente. Estos líquenes estaban poblados de una gran variedad de criaturas, desde moscas miniaturas, gusanitos, cochinillas infantiles, y colémbolos de varias especies. La mayor parte estaban demasiado ocupadas en correr de aquí para allá para que yo, enfocando tan lentamente el microscopio, les capturara. Pero algunos de los colémbolos, los simfipleones, a los que llamamos "globosos", se estaban en paz.

Estos colémbolos globosos, a mi parecer, son los más adorables de todos los criaturas de seis patas. El primero que encontré se escondía en el fondo de un hongo "nido de pájaro".

3 fotos. Un colémbolo Dycirtoma. El círculo de luces es del microscopio. En la tercera foto, lleva en la boca una gota de agua, que luego abandonó.

Cuarta foto: otros dos colémbolos.

Quinta: y con un gusanito, que mide aproximadamente 1 cm. de largo.

Mirando los colémbolos en vivo, pude ver que los colores de su abdomen están en movimiento continuo, como si tuvieran adentro una pequeña luz. ¿Será su corazón que late, o su respiración, digestión?

Estos colémbolos miden más o menos 2 mm. de largo. Pero son gigantes al lado de esta otra criatura que vive en el liquen.

Sexta foto: ¡Tan pequeñito! Tal vez el tamaño de una pata de colémbolo. Viendo las estructuras alrededor de la boca, podría ser una variedad de ácaro. Quizás.

Cuando terminé, los llevé a todos afuera al jardín y la lluvia.


2 comments:

  1. The guy in the last photo is definitely a mite. Beyond saying that it's some sort of prostigmate (which is comparable to saying whether something is a mammal or a fish), it's of course impossible for me to say what kind.

    ReplyDelete
    Replies
    1. Thanks, Christopher! I tried to get a better photo, but he went and hid and I couldn't find him again.

      Delete

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