parthenogenetic

The crazy thing with Asari reproducing the way they do though is there are actual real animals that reproduce that way. In particular, there are a few species of carp that are all-female and reproduce by swimming into the middle of schools of other species, then literally use the sperm of those species to initiate what’s effectively cloning. As well, there are lizards that are facultatively parthenogenetic, so if no males are present they reproduce by (basically) pretending to have sex, which leads to hormonal changes that trigger clonal reproduction.

From this, I conclude two things:

1) Carp are kinky freaks

2) To put it simply, ‘life, uh, finds a way’

anonymous asked:

Hi! I'm interested in Celtic mythology, and noticed that you talked a short amount about Arianrhod, Goddess of the Silver Wheel? I was wondering if you had any more information- like her background, her relations, the specificity of her job/purpose, about her mythology? Thank you!

The original function of Arianrhod isn’t clear: she appears in fourth branch of the Welsh Mabinogion as a heroine. She’s supposed to replace Goewin, who served as a footholder for the king Math. So, after his nephews rape Goewin, Math marries her, and needs another virgin to serve as a footholder; one of the mentioned nephews, Gwydion, nominates his sister Arianrhod for the job.

But when they test her virginity (Arianrhod herself claims that she is, as far as she knows) and steps over Math’s wand, she gives birth to two sons: Dylan and Lleu Llaw Gyffes. One of them, creature of the sea realm, escapes immediately; the other one is rejected by Arianrhod, who refuses to give him a name or weapons. (this story is told at length on Wikipedia, and sources it gives seem to me legit enough)

She lives surrounded by her maidens on a coastal island Caer Arianrhod, which is an idiomatic Welsh name for Corona Borealis. Now, we don’t get a full account of the event and we don’t know if the children were conceived parthenogenetically or thanks to Gwydion’s deceit. When we put all that together, we get a few different theories on her account.

First of all, she seems to be a remnant of a goddess. Goddess of what depends on our interpretation of the available sources:

  1. since her name means “silver wheel”, she’s often seen as a depiction of ancient moon goddess;
  2. since she probably gave a virgin birth, she might be a mother goddess (as mother goddesses often described as virgins);
  3. since she gave birth to darkness (Dylan) and light (Lleu), she might be seen as a dawn goddess.
  4. she might’ve originally been the goddess of darkness and night.

She’s been compared to the ancestral goddess Branwen, seeing as one of the Welsh Triads names her among “three fair maidens”. I’m not sure what are @would-be-writer ’s sources on this one, I can see that she’s associated with Argante – British goddes of the Otherworld and of the island of Avalon (Argante’s also associated with Morgan Le Fay). Since their names share the same root (arg- “silver” and Welsh arian- “silver”, derived from arg-), maybe they were two heroines that appeared from the same deity.

Sources: Patricia Monaghan The Encyclopedia of Celtic Mythology and Folklore, p. 23 https://books.google.com/books?id=nd9R6GQBB_0C&source=gbs_navlinks_s Sharynne MacLeod NicMhacha Queen of the Night: Rediscovering Celtic Moon Goddess https://books.google.com/books?id=1l1yXq4xGHsC&dq&source=gbs_navlinks_s

about sources: The Encyclopedia seems legit enough, but I’m not sure about the second one. Still, the author mentions her sources, so it might be fine.

-the Chorus

[Note: we do have some books that have been requested from the library, and if we get any new information we will update this answer, but we’ve had this question for awhile and didn’t think it fair to our Nonnie to make them wait any longer]

actualarishok  asked:

I am curious to know what the weirdest herp you know of is

I had a tie for this. The runner up is the Surinam Toad, who I might write about someday, but the winner is the Caucasian rock lizard, Darevskia (or Lacerta, the nomenclature is confusing) rostombekovi. 

Now these gals are parthenogenetic, which isn’t particularly weird for a herp. There’s several species that do this. Some, like whiptails in the genus Cnemidophorus, are neat in that they actually practice female-female courting behavior and require stimulation to reproduce. Another species, the mourning gecko (Lepidodactylus lugubris), is fascinating because sometimes physical males do crop up that produce sperm… that’s completely useless. They can’t impregnate a female. But the Caucasian rock lizard is something else entirely.

Also called Rostombekov’s Lizard, this creature is unique because it’s monoclonal, meaning there’s only one genetic lineage. There never was a male. Literally every single member of this species is genetically identical to her sisters. 

There are several parthenogenetic species in the genus Darevskia, but the rest of them have multiple lineages and so there’s some genetic diversity. That is absolutely not true of this particular lizard. How did this happen? What kind of speciation event led to a single clonal line for an entire species? We do know that the other Caucasian rock lizards that are strictly parthenogenetic have wider ranges than their bisexual ancestors, but this species is shamefully under-studied; we know very little about them, other than that they’re threatened by land development and they’re all genetically identical. That is unheard of in vertebrates. 

So here’s to you, weird identical lizard ladies. Science can’t tell me what the hell happened to you, but you do you. 

Literally. Because you’re all clones of each other.

Image sources: 1, 2, 3

A Study in Synesthesia

1

There is irony here.
It’s implicit, in this attempt to evaluate what is inherently intimate,
What may not be interpreted by an incomer
At least, not interpreted well.
Pale shimmers of syllables seen solely by one;
A brilliant idea, or ill-conceived inanity?

2

Quixotic.
God, I want it, but it’s quelled.
Amidst fearful fidgets, persnickety pizzazz
Quintessential, yes, but juxtaposed.
Against hoards of disentangled dissidents.
Frippery and fop, freewheeling, fun.
Different.
Frankly, I’m flummoxed.
By how perfectly poised, yet predisposed to disregard are my peers.
By how skittish, shrinking, shy am I.

3

Sordid scandals of silk and surmise
Sacrilegious sacrifice for a sumptuous surprise
Serenity? In this economy?
Superstition parts for sensation,
Stepping on cracks to satisfy the impulse.
In summary, my seraglio is in the summery.
Up on scaffoldings, in the sun,
A pastiche of sex and self-esteem,
Dangling snake-limbs for the sense, the stimulation.
A panchaea of superfluous satisfaction.

4

Metagenesis: the blooming backlash of the faint of heart
Hesitation in flora to devote to a doctrine,
Magnifying (magnificently!) by means of generational flipping and flopping.
How gloriously the most gentle of germs dedicates genome to doubt,
Dividing and multiplying parthenogenetically on Mondays,
and from gametes to growth by Friday.

5

Abracadabra!
Restrained alliteration makes way for rhetorical rambunctiousness.
Unravel the riddle, and what do we uncover?
That the act isn’t yet up.
We revel in ambiguity, the rabble in uncertainty,
As the ragtag rapscallions we
Resurrect antediluvian arts for your amusement.
Appreciate it yet?
Rather rest by rivers, riparian rippling?
Or adopt with us the absurd?

6

Your lachrymose limbs, broken and lacking,
Occupy worlds invisible, in which licentious bacteria breathe.
Bioluminescence blooms in our veins,
Lives of vivacity and vigor live within our bones.
Our blood once lured beasts obsolete,
Orchestrated opulence in vessels of power.
Our molecules occurred at the beginning of the world,
And will leave only at its last word.

7

This nacreous kind of violence–
Tantalizing treacle turning noxious on the tongue
Never to be noticed, not truly, not in time
Till chamberlains turn to a torrid cacophony of venom.
It is kismet for those to turn to cinders,
Once verbalized complaints are created,
But temper is tricky, and conduct, all too commonplace
To take note of these contrived corpses.

8

Effervescent
Understanding
Understanding, uncommon, unassuming
An erstwhile umbrella, under which you may harbour,
Under which you may rest.
An effervescent doze.
Anon, a fortress, for the meek for a week.
Protected from misanthropes until the end.
Understanding.
Efflorescence.

9

An instance of wake within lethargy
Iridescence on the edges of life, isolated not from life or limb entirely.
Weaving, waving, etching imagination onto sentience, illumination onto the veil
An invented impression interrupted by lucidity
Lucidity injected with a wistful wish

0

Zigzagging betwixt void and zenyth
Words omitted to the zenzizenzizenzic
Zealots implore:

what if EVERY OTHER SPACEFARING RACE were clonal or reproduced parthenogenetically. what if every single other spacefaring race got along and trusted each other and could cohere as empires or governments or principalities because they were all the same, that’s how they all drew together to get off their planets, by having extinguished somewhere back in the mists of pre-asccension time all their homeworlds’ other lineages of competitors, and only met people different from them after having come to sturdy social maturity among the stars

what if we’re the only sexual species to ever make it up there

what if we really truly deeply freak every other race in the galaxy out with our unpredictabilities and differences–what if they slowly and painstakingly decide they get along with ONE human, and then agonize over family lines and surreptitiously-filched DNA samples and insist somewhat pathetically on only doing business with people who’ve got similar immunohistocompatibility complexes as that one. they heist their way into the global bone marrow donor’s database for possible other humans to do business with

Like they DEFINITELY don’t trust family lines, the allellic reassortment of sexual procreation. They’ve got a deep-seated taboo against acknowledging the relatedness of our children to their parents–so different from what they ought to be; misborn; all wrong–but they know they can’t raise sane clones of us on their own. Maybe a whole entire other species decides they’ll only hire humans whose blood type is A+, because being able to share that fluid is not only a workplace safety issue but the powerfully symbolic interchangeability soothes their revulsion towards what would otherwise be a heterogeneous human workforce??

I just think it would be neat for aliens to be SUPER FAR-REACHING-IMPLICATIONS PREJUDICED AGAINST SEXUAL REPRODUCTION but for about every reason possible besides the mechanics of having the sex, because most all of them are like whiptail lizards and OBVIOUSLY thinking beings shouldn’t be prevented from having sex. they just think we’re as disconcerting and threatening on a fundamental level as we think the queen Alien with all her thousands of eggs from Alien is.

Parthenogenesis is Real.  File Under: No Comment

While most of the larger species of plants, animals and insects all reproduce sexually, there are many exceptions.  The New Mexico Whiptail (pictured) is a species of all-female lizard, sometimes nicknamed the ‘lesbian lizards’ who reproduce parthenogenetically, that is, without a second source of genetic material.  The word parthenogenesis comes from the Ancient Greek word παρθένος (parthenos) meaning a maiden or girl, often used to denote unmarried girls who are virgins.  As a proper noun, Παρθένος (Parthenos), the word was used to denote The Virgin Goddess, a title for Athena at Athens, her temple there still standing as one of the most significant ruins in the city.  Genesis comes from the Ancient Greek word γιγνεσθαι (gignesthai), to be born, denoting kinship and family, but here offering a very literal description of the Whiptail’s asexual reproduction.   Despite that, the Whiptails engage in a type of ‘mating’ behavior, thought to stimulate ovulation, as those lizards who do not ‘mate’ typically do not produce eggs.  Many types of life forms reproduce this way or are occasionaly capable of parthenogenesis, including insects, crustaceans, sharks, birds, but so far not in mammals. Ahem.

Parthenogenesis

While most of the larger species of plants, animals and insects all reproduce sexually, there are many exceptions.  The New Mexico Whiptail (pictured) is a species of all-female lizard, sometimes nicknamed the ‘lesbian lizards’ who reproduce parthenogenetically, that is, without a second source of genetic material.  The word parthenogenesis comes from the Ancient Greek word παρθένος (parthenos) meaning a maiden or girl, often used to denote unmarried girls who are virgins.  As a proper noun, Παρθένος (Parthenos), the word was used to denote The Virgin Goddess, a title for Athena at Athens, her temple there still standing as one of the most significant ruins in the city.  Genesis comes from the Ancient Greek word γιγνεσθαι (gignesthai), to be born, denoting kinship and family, but here offering a very literal description of the Whiptail’s asexual reproduction.   Despite that, the Whiptails engage in a type of ‘mating’ behavior, thought to stimulate ovulation, as those lizards who do not ‘mate’ typically do not produce eggs.  Many types of life forms reproduce this way or are occasionaly capable of parthenogenesis, including insects, crustaceans, sharks, birds, but so far not in mammals.  

anonymous asked:

On the topic of sex categories being arbitrary, humans often force their arbitrary binary on plants and animals. One-sex species are often called "all-female" when that species' one sex vaguely resembles female humans. Bees are arguably a three-sexed species of workers, queens and drones. Calico cats are biologically intersex because the genes for three different coat colors requires three different chromosomes. And then there's the concept of male and female plants. I think I've made my point

and then you have animals like clown fish, which can change their sex based on environmental conditions, and parthenogenetic (I assume that’s what you meant by all-female) species who can reproduce sexually without a partner. 

human binary sexing of nonhuman species is just unscientific and unnecessary.