Tumgik
#Reproduction
Text
Tumblr media
42 notes · View notes
warandpeas · 2 months
Text
Allergies
Tumblr media
View On WordPress
3K notes · View notes
todropscience · 5 months
Text
Tumblr media
The Japanese green syllid Megasyllis nipponica, is a bristle worm native from the coast of Japan, but now is know to live in coastal parts of California where is stablished. This little dance seen in the GIF have a reproductive reason, and researchers now explaing better what is happening, and you may not be prepared to this.
The brown and dancing body segment is called the stolon, which detaches from the worm in a unique reproductive process called stolonisation or schizogamy. When gonads are matured, the stolon developed a head, which even posses eyes, antennae and bristles, then the stolon can break off and swim away, to break apart to release eggs or sperm. This bizarre process continues before the stolon detaches when it develops nerves and a ‘brain’, allowing it to swim independently from the original body.
Tumblr media Tumblr media
Video and figure by Nakamura et al 2023
Reference (Open Access): Nakamura et al. 2023 Morphological, histological and gene-expression analyses on stolonization in the Japanese Green Syllid, Megasyllis nipponica (Annelida, Syllidae). Sci Rep
404 notes · View notes
psikonauti · 2 years
Photo
Tumblr media
Carducius Plantagenet Ream (American,1838 - 1917)
Dessert no. 4,1870
3K notes · View notes
remash · 9 days
Text
Tumblr media Tumblr media Tumblr media Tumblr media Tumblr media
water lillies #1 ~ ai weiwei | photo credit: ela bialkowska | okno studio
222 notes · View notes
Text
Tumblr media Tumblr media Tumblr media Tumblr media Tumblr media Tumblr media
Here the results from a stream we had some time ago where we speculated about dinosaur reproductive behaviors. A topic that I think is rather fascinating but is rarely touched upon (cowards!).
You see here six genera in the act.
Utahraptor, Turiasaurus
Hesperosaurus, Therizinosaurus
Spinosaurus, Gastonia
2K notes · View notes
biologist4ever · 1 month
Text
Tumblr media
Dulphin giving birth
156 notes · View notes
Text
Tumblr media Tumblr media Tumblr media
ITS FUCKIN SILKSTONE ALLAN !!!!!
222 notes · View notes
balkanradfem · 5 months
Text
Learning more about animals made me think about an interesting comparison on how we decide to reproduce, compared to how animals do it.
In the wild, animals will usually reproduce less, or simply survive less and thus do less populating, if the habitat isn't suitable for them, temperature is wrong, and if they don't have enough reliable food sources. Sometimes they will be able to adapt to a different habitat and temperature, like having their reproduction cycle delayed or done in a different time of year so that their young would survive, but if there's no food source, they'll reproduce in smaller numbers.
This is why sometimes animals will overpopulate the areas near humans, if they're able to access people's food storage, trashbags and pantries, it will give them a great, fulfilling source of food and thus an incentive to reproduce as much as they want to - after all, there's food for everyone.
But with humans, it's like we don't even pay attention to that. Or rather, our reproduction is governed by culture that isn't built around human needs and quality of life. We're taught that we need to reproduce, especially if we're women, because:
everyone else is doing it and it's the only normal thing to do
if we don't do it we're failing to contribute to future society
we're going to be an outcast if we don't do it
we're going to end up alone and unloved if we don't do it
there's a limited time frame in which we can do it, and if we don't we might regret it later
there's intense pressure all around us from our peers, relatives, family, cousins and others to do it, and they are all assuming we will and ask us why
if we don't we're contributing to extinction of the human species
we're supposed to want to do it
we're threatened of missing out on a fulfilled life if we don't do it
we're depicted as wasted potential if we don't do it
we're told it's what we exist for and it should be our only purpose to do it
And this fails to take into account absolutely everything that comes into being with creating human life. We aren't supposed to pay attention to the amount and quality of food that we have, to the state of the habitat all around us (if we can even access the information about it), the amount of energy, free time and willingness we have to nurture and raise a human child, or what kind of life this child can have in a world like this. It's almost like we're pushed to be more mindless than animals, reproducing simply because it's the thing that is done, rather than assessing the situation and making a reasonable call of whether someone should be living in a world in this state.
So whose idea was it to create a culture like this, who benefits from it? The answer is very simple, m*n. Just from looking at the culture they developed, it's obvious they don't care about the quality, length, or resources put into a new human's life, all they care about is producing as much offspring as possible, regardless of circumstances. All of the beliefs I've mentioned above, that are forced onto women, come from that simple-minded desire: let us multiply uncontrollably. That's also where the idea of taking away womens choices comes from; it makes it all male choice. They can decide for a woman, whether she'll have a child or not, giving them absolute control over human reproduction, while they clearly do not care what kind of society this builds or what are the consequences for the said children.
When this control is put into women's hands, all of these circumstances are taken into account. Quality of environment, available funds, food, energy, human influence, the amount of danger and threat to the child, the climate, the chance of that child having a safe and happy life, woman will be aware of all of this, because she is the one who will make sure that child stays alive and well. Fathers can ignore all of this because they know mothers will take on this labour on themselves if given no other options.
I've read recently, on how human lifespan increased so grandmothers would be able to take care of their grandchildren, giving the parents more time to work and care for themselves, and isn't it interesting? How only women were ever expected to do that. Every grandfather I've heard of was not only incapable of taking care of a child, but also incapable of taking care of himself, burdening his wife with his every need until his death. Often, they were also a danger to the children (not every single time, but often enough to be mentioned).
And we're stuck in the world where they're the ones making the calls to create more children endlessly, all while ignoring the circumstances of that child's life, and doing massive acts of violence, wars, terrorism, destruction and devastation of human life worldwide, ultimately killing both mothers and children.
It feels wrong on every level that anyone except women should have authority on human life, when to reproduce and in which circumstances. We have to endure devastating trauma and pain, intrusion in our own bodies and risk of death to make just one person. We evolved to live longer in order to take care of children, to create a better environment for them to live in, and we should let someone else make the call? It's insane.
Not only women should have the ultimate say in this, for the sake of quality of human life and the environment, but all of the culture surrounding reproduction should change. Making children in a world where we can't care for, feed and protect them isn't normal. Not paying attention to whether a creation of a child will only cause extra suffering to the child, is not how we create a future our children can live happily in. Males spreading their broken dna is not worth creating a human society that is built up on suffering, and will lead into more suffering.
322 notes · View notes
phoenixyfriend · 6 months
Text
Having Omegaverse variant thoughts again, namely:
Omega males in alpha/beta/omega settings often have a reproductive tract pass through the rectum
Reproducing through the same orifice as you excrete feces is unlikely unless it's a cloaca
Animals that reproduce through a cloaca are by and large egg-laying species (with the exception of a very few mammals)
Ergo: Omega males actually lay eggs, even though omegaverse females gestate the standard way
(Or the omega males could be all marsupial about it I guess?)
Two options: the egg is small and there is a "flushing" of the rectum followed by a MASSIVE hormonal influx to nesting instincts to ensure the egg is lain in a clean and safe space instead of Where We Shit
OR the male omega is bingeing and swelling to pregnancy size for about two months? and then lays a soft-skinned egg (also with the hormonal influx situation), which is way less physically traumatic than live pregnancy since the cervix undergoes less strain and there's less risk of complications overall due to fewer Rigid body parts. (Chance of tearing to the egg skin, though)
Would have an impact on social norms where omega males are expected to carry even more than women because Sorry, Honey, It's Just Less Of A Health Risk, Boo.
This is like a less-cursed counterpart to my hyena assertions.
174 notes · View notes
sidorothy · 22 days
Text
Tumblr media
reproduction
97 notes · View notes
thoughtportal · 6 months
Text
In March 2021, sheriffs in Etowah county, Alabama, arrested Ashley Caswell on accusations that she’d tested positive for methamphetamine while pregnant and was “endangering” her fetus.
Caswell, who was two months pregnant at the time, became one of a growing number of women imprisoned in the county in the name of protecting their “unborn children”.
But over the next seven months of incarceration for “chemical endangerment” in the Etowah county detention center (ECDC), Caswell was denied regular access to prenatal visits, even as officials were aware her pregnancy was high-risk due to her hypertension and abnormal pap smears, according to a lawsuit filed on Friday against the county and the sheriff’s department. She was also denied her prescribed psychiatric medication and slept on a thin mat on the concrete floor of the detention center for her entire pregnancy.
In October, when her water broke and she pleaded to be taken to a hospital, her lawyer says, officials told her to “sleep it off” and “wait until Monday” to deliver – two days away.
During nearly 12 hours of labor, staff gave her only Tylenol for her pain, the suit says, allegedly telling her to “stop screaming”, to “deal with the pain” and that she was “not in full labor”. Caswell lost amniotic fluid and blood and was alone and standing up in a jail shower when she ultimately delivered her child, according to the complaint and her medical records. She nearly bled to death, her lawyers say.
After she was taken to a hospital, she was diagnosed with placental abruption, a condition in which the placenta separates from the wall of the uterus and the fetus is deprived of oxygen, meaning there was a risk of stillbirth. The baby survived, but Caswell was immediately separated from her newborn.
155 notes · View notes
mindblowingscience · 14 days
Text
This deeper understanding of the ovary means researchers could potentially create artificial ovaries in the lab using tissues that were stored and frozen before exposure to toxic medical treatments such as chemotherapy and radiation. Currently, surgeons can implant previously frozen ovarian tissue to temporarily restore hormone and egg production. However, this does not work for long because so few follicles—the structures that produce hormones and carry eggs—survive through reimplantation, the researchers say.
Continue Reading.
67 notes · View notes
warandpeas · 2 years
Text
Earth News
Tumblr media
View On WordPress
1K notes · View notes
futurebird · 3 months
Text
None of you thought it might be important to tell me that ferns have sperm that swim???
So.
None of you thought it might be important to tell me that ferns have sperm that swim??? I just had to find all this out on my own?
Tumblr media
And, (apparently, & no one thought to bring this up either🙄) fern plants are only one form… they have this 'other form' (tiny, ephemeral, difficult to find in the wild) alternates generations-- Fern spores don't grow into ferns! (WHAT) they grow into 'gemetophytes' (WHAT) THEN you get a fern.
Feel like I've uncovered a massive scandal.
61 notes · View notes
biologist4ever · 1 month
Text
Tumblr media
83 notes · View notes