Venomous spiders #8 - Loxosceles reclusa

Scientific Classification:

Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Family:	Sicariidae
Genus:	Loxosceles
Specie:	L. Reclusa

Common Name: Brown Recluse spider, Violin spider.

That's it, this coin sized spider can do a great damage, never underestimate those little things. Those spiders can be found everywhere seems like a plague, many people label they as the most venomous spider in the world but they're wrong, it just bites a lot bites which make a very ugly necrosis (i found some pictures showing it), im sure you already have stepped on them so good job i hate them too and keep on doing it if you find one at your home but try to not do it if you find it somewhere that's not civilizated cause we still need them for something, now about the bite, first of all i need to tell you that they usually aren't aggressive just try to not press it against your skin or someone's skin. The initial brown recluse bite frequently is not felt and may not be immediately painful it usually become painful within 2-8 hours, pain and other local effects worsen 12 to 36 hours after the bite and the necrosis develops over next few days, Over time, the wound may grow to as large as 25 cm (10 inches) in extreme cases, the damage tissue becomes gagrenous and eventually sloughs away. There's some species of this genus that causes a lot of different symptoms, even death (that's a symptom? HAHA).

Im going off this week

So, this week im going off probably no posts this week, im participating in the VII Brazilian Biosafety Congress and the First International Conference of Biosafety and Biosecurity for Latin America and Caribbean it's so fucking awesome there's english speakers that lectured and spoke about Biotechnology, i understand every single word they said im so proud of myself *-*. Tomorrow is the second day (obviously) and im gonna learn about transgenic manipulation can't wait for this, see ya!

Spider or Turtle?

You're afraid of spiders? what about a turtles? lol

Venomous spiders #9 - Atrax Robustus

Scientific Classification:

Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Suborder:	Mygalomorphae
Superfamily:	Hexatheloidea
Family:	Hexathelidae
Genus:	Atrax
Specie:	A. Robustus

Common Name: Australian funnel-web spider, Sydney funnel-web spider.

This spider gives me chill, even me who love spiders. Their color range goes from blue-black to black to brown or dark-plum, the carapace is almost hairless and so looks smooth and glossy sometimes it appers like a toy but unfortunately it's not, they are very agressive when bothered, SO don't bother it if you see one of them just leave it there or call the institute of animals those spiders can be used to medicinal studies. Now, about the symptoms, at the beggining the bite can be very painful due to the acidity of the venom and the size of the of the cheliceras (fang) penetrating the skin, if substantial envenomation occurs, symptoms will occur within minutes and progress rapidly and there can be many of those symptoms like nausea, vomiting, shortness of breath (caused by airway obstruction), agitation, confusion, writhing, grimacing, muscle spasms, pulmonary oedema (of neurogenic or hypertensive origin), metabolic acidosis and extreme hypertension, The final stages of severe envenomation include dilation of the pupils (often fixed), uncontrolled generalised muscle twitching, unconsciousness, elevated intracranial pressure and death. When death occurs it is generally as a result of progressive hypotension or possibly elevated intracranial pressure consequent on cerebral oedema. The average time to onset of envenomation was 28 minutes, you can die in 15 minutes to 3 days, it depends to each to each.

Haplopelma Lividum

Scientific Classification:

Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Suborder:	Mygalomorphae
Family:	Theraphosidae
Genus:	Haplopelma
Species:	H. lividum

Venomous spiders #10 - Haplopelma huvenum

Scientific Classification:

Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Suborder:	Mygalomorphae
Family:	Theraphosidade
Subfamily:	Ornithoctoninae
Genus:	Haplopelma

Well, i will start posting the ten most venomous spider (classified by my opinion) :P

Trapdoor Spiders

Scientific Classification:

Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Suborder:	Mygalomorphae
Superfamily:	Ctenizoidea
Family:	Ctenizidae

Lycosa sp.

Scientific Classification:

Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Suborder:	Araneomorphae
Family:	Lycosidae
Genus:	Lycosa

CEPA - Rugendas

Today is a very special day, to me at least, exactly three months ago, my colleagues and I went to a camp studying at CEPA Rugendas. Right there I found a spider, i went crazy, spent half day staring at it *-*. At first I thought it was a Lasiodora klugi, and… I thought wrong, actually it was a Grammostola acteon that some buddies helped me to identify it. So that’s it, this day made me really happy.

Cat and Spider

"It is hoped that the reader approaches the subject of spiders with as much curiosity as this cat in 

this Japanese silk painting. Curiosity does not necessarily kill the cat—nor the spider. 

(“Cat and Spider” by Oide Makoto, 1836–1905; The Metropolitan Museum of Art, 

New York.)(FOELIX Rainer F., Biology of Spiders 3rd Edition,Oxford, 2011 )"
 

So, i saw that some readers have this "fear" about spiders, I don’t know, probably is because you were warned that they are dangerous and blablabla, but it’s not that it seems to be, of course there’s the dangerous ones, but most of them are inoffensive to humans and, some of them can be domesticated. Or, just because you think they’re ugly, maybe, some species look ugly in some way and other species can be beautiful in another way.

I will talk about venomous spiders and how you can raise them soon, for now i hope you keep reading my blog, and lose that “fear”.

How does a spider grows up?

Well, spiders don't grow like us, because they're arthropods. =D They have a exoskeleton, that's exchanged from time to time, thus allowing the spider to keep growing, this process is called Ecdysis (or "molt"), and yes, it's for all the arthropods. You may be asking, "so?". It's a awesome process, keep reading and you won't regret.

Avicularia Metallica

Scientific Classification:

Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Suborder:	Mygalomorphae
Family:	Theraphosidae
Subfamily:	Aviculariinae
Genus:	Avicularia
Species:	A. metallica

Pterinochilus Murinus

Scientific Classification:

Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Suborder:	Mygalomorphae
Family:	Theraphosidae
Subfamily:	Harpactirinae
Genus:	Pternochilus
Species:	P. murinus