Showing posts with label frog. Show all posts
Showing posts with label frog. Show all posts

Friday, September 11, 2009

Rule number one of herping

When you flip over a rock or log, put it back where you found it! Argghhh!

*deep breath*

Hi there! Back at school, classes are underway, life is insanely busy. But let's forget about all of that for now, and take a little trip to the woods.

There's an arboretum near my campus, about a 15 minute bike ride. Went exploring today and saw lots of great things. And for those that don't know: herping = looking for herps = reptiles and amphibians (herpetology - get it? Not "herpes").

It turns out someone earlier this summer (hard to tell how long ago) had gone into the quarry (best salamander hangout) and flipped over almost every single rock and log - WITHOUT PUTTING THEM BACK. I wanted to SCREAM. Cannot believe someone would be such an inconsiderate jerk to nature -obviously not someone who really cares about the animals they're looking for.

The first thing you learn is to not curl your hands underneath (I learned that when I was 2), the next is to put it back ever so gently to make it look as if you were never there.

But nevertheless, saw lots of fun creatures.

The blue spotted salamander, one of my favorites, of course (Ambystoma laterale). I love when they do their defensive tail wave.
A mangled looking wood frog (Rana sylvatica) - poor thing had a malformed or injured hind leg. Looks fat and healthy though.
Lots of red backed salamanders (Plethodon cinereus) of course.
I feel quite lucky this peeper held still for a split second so I could take this photo (Pseudacris crucifer).
I did see one reptile - a garter snake. Unfortunately, this is the best pic I could get, as it swam across a pond.
By the time I jumped off my bike and turned on my camera (watching it gracefully swim away), it had reached one side and escaped into the woods. That's when I saw it was certainly a garter snake, but too far off to try to catch.

And I also saw a Pelecinid wasp! They're amazing insects, and not too common. The female's abdomen is so long! It flew across the bike path and I literally dropped my bike from under me and chased it off into the undergrowth. It kept landing briefly and fluttering off, and I stumbled after it through brambles and bushes for several minutes until I lost track of it. So sadly, no photo. But it was a really neat insect to see.

As far as updating my blog, I'll play it by ear - very busy schedule this semester and thinking about putting my etsy shop on hold - at least not worrying about making too many new things. Will be taking custom orders on a gradual basis.

Thursday, August 6, 2009

Invasion of the Adorable Amphibians

Another day of field work at my job, and I remembered my camera this time!

It was a wonderful day for amphibious creatures... they were continually underfoot and I managed to get my hands on a few.

Warning: extreme cuteness ahead.

First up: baby gray tree frog (Hyla versicolor)Peep peep! Spring peeper (Pseudacris crucifer)Itty bitty toad (Bufo americanus)
Teensy red eft (Notophthalmus viridescens)
Bigger red eft (Notophthalmus viridescens)

Sunday, March 9, 2008

Froggy fun (and mutations!)

Harold welcomes you!

May he rest in peace. He was only half an inch long when I caught him several years ago, fed him by sweeping my net in the field across the street for little flies, leafhoppers, grasshoppers and caterpillars. He lived for several years before I left him with a friend when I left for college. He reached maturity soon after, and started chirping every night! She would send me pictures of him often. He ended up dying of old age. I really miss that little guy.

Another gray treefrog story: this is Lucifer He lived behind a board leaning against one of our sheds in our backyard. He lived in the same spot for three summers in a row! I'd visit him often, sometimes taking him for a ride on my shoulder around the yard. I would catch grasshoppers for him, though I never kept him as a pet. It was much more fun finding him there every day. He was also really good about letting me take pictures of him.
Treefrogs are awesome, but back home I also have a wonderful pond full of bullfrogs, green frogs, pickeral frogs, leopard frogs, and maybe more!My butterfly net, made by my grandfather, had multiple purposes. One of them included capturing frogs (as well as anything else that looked interesting in the pond). It was always a fun challenge, and I'd spend nearly every summer day circling the pond. Once I reached my mid-teens and had some money, I bought myself some high quality nets from BioQuip, one butterfly net and one pond net. It had really stunk when my net was all wet, and I saw a butterfly fly by! (My butterfly collection has been photoshopped a bit and is the "banner" at the top of the page).

There is so much that could be said about frogs, and I'd like to take a look at mutations, like this one (A plushie I have made and sold):
There have been many theories about the apparant rise of multiple legs and other deformities in frogs. They're generally known to be environmental indicators, among the first organisms to be adversely affected by pollution and other changes (several other amphibians and insects also work this way). When their numbers start declining, people should take notice before it gets too late.

I've read a book called A Plague of Frogs which I highly recommend. It's accessible to an average reader while still providing good scientific information. They conjecture that pesticides are the most likely culprit for the rash of deformities. This is quite likely, considering we don't know all the affects pesticides could have on animals, and they're dumped into and run off into bodies of water at an alarming rate.

However, doing research for one of my ecology classes, I came across many papers claiming that a tremotode, Ribeiroia ondotrae, causes many of these mutations. In studies they have been found gathered inside the tissues of frogs, concentrated around the deformed areas, and are known to induce mutations if added to a frog's environment. These parasites have a complex life history, with three hosts. Adults live in birds and mammals, and eggs are expelled via the feces of the host. The eggs are then eaten by snails, where they develop into a stage called cercaria. They then leave the snail host, disperse into water, where they look for a tadpole or fish host to burrow into (at this point they are called metacercaria). They are able to mature when the infected animal is eaten by a bird or mammal, and thus completes the life cycle.

With such a complex life cycle, there are many points at which things could be disturbed. In a normal system, these parasites are kept in check. However, due to climate change and human activities, the balance in many areas has been altered. For instance, fertilizers can cause algal blooms in ponds. Snails might love this algae, and thus explode in numbers. If they carry the Ribeiroia parasite, the parasite increases in numbers as well. It can be seen how this will affect the frogs: very badly.

How do mutations help the parasite? Since they need to be passed on to another host, its in their best interest to make it easier for their current host to be captured and eaten. Many parasites work by this principle. Several ant species, infected with parasites in their brain stem, will crawl up blades of grass where they can be eaten by deer or sheep, the next stage of the parasite. In the case of frogs, having extra limbs or missing eyes will make it harder for them to escape predators, making them slower and more conspicuous.

So it's true that pesticides and fertilizers are harming the frogs, just perhaps not directly. However, these parasites haven't explained every single case, and there might be different parasites or other culprits out there. But the bottom line is that these deformities are caused by shifts in ecological balances, due to human activity.

I myself, several years ago, found a baby gray tree frog (Hyla versicolor) with six legs, aptly named Hex:
If you want any more frog facts or even some silly jokes, here is a fantastic website created by the etsy member laughingstarfish:
AllAboutFrogs

Friday, March 7, 2008

Now for the creatures that everybody likes

I noticed frogs don't have ANY votes in my poll, so here we go. A post that everyone can love!

And for this I will feature the etsy seller CraftyHedgehog
She's a part time college student with a penchant for knitting, and has come up with some fantastic designs.

I never liked dissecting frogs in high school, in fact as a zoology major I *still* don't like dissections, but I have to say this is an awesome piece of work. It's titled Knitting in Biology 101. The frog is held on with pins and can be taken apart, I imagine it's a big hit with teachers. I'm very tempted to get one for myself! She also offers the pattern for sale.


In case you like your frogs alive, there's this little guy called Tiny Prince. I just have to post the close up shot, look at that face!
This big guy, Giant Froschkonig, looks super soft and huggable. (the name appears to mean a frog prince).

And one more, a little Froschkonig, I can't resist.
I hope that's enough cuteness to satisfy you all. Next up will be a post with my own photography and some fun facts about froggies.

Monday, February 11, 2008

Another awesome etsy feature

Strangeling is most definitely one of my favorite etsy artists. She manages to combine cute, sultry goth fairy girls with creepy creatures. A fantastic combination! So many of her characters remind me of myself. I have one of her prints and plan on collecting more.

She doesn't just sell on etsy, and it quite well known with her items in stores such as Hot Topic!

(Click the pictures to be taken to their listings)