#Egg science

[broimgae]

egg science

[clonerightsagenda]

I was rambling on the issue of museums and human remains and how certain populations are more likely to have their bodies put on display to be gawked at and then went "well I guess the Pompeii casts were of Europeans. there are bones in there right?" and Googled it to make sure, at which point I confirmed that yes there are bones in there, but more interestingly DNA testing revealed that a cast of an adult holding a child everyone assumed was a mother and child were, in fact, a man and a kid entirely unrelated to him. Honestly that's more moving to me. Maybe they were connected in a way other than blood, but maybe a stranger saw a child when the world was ending and thought the one thing he could do was hold them.

[the-wolf-and-moon]

NGC 6164, Dragon's Egg

[alexriesart]

Baby birrin and the anatomy of their eggs.

Their eggs have protein caps which are exchanged several times during development.

Color changes let attending birrin know the status of the embryo and when a new cap is needed.

[todropscience]

THREE NEW SHARK SPECIES THIS WEEK!

The second week of July 2023 something extraordinarily beautiful happened, the findings of 3 new species of sharks for were announced

A new angel sharks species was identified, from the western Indian Ocean on the Mascarene Plateau and off southwestern India in 100–500 m depths, the Lea’s angel shark Squatina leae, was recognized to be different genetically and morphologically distinct from its congeneric species Squatina africanae, following unique morphological features.  This species was first detected in 1988 after finding  three unusual, small sharks, but till today was completely understood. The angel shark is named after one of the author’s fiancee’s late sister, Lea-Marie Cordt.

-  Squatina leae, adult male, in dorsolateral.

Angel sharks are “flatter sharks”, possesing distinctly broad, dorsoventrally flattened bodies, a short snout with large mouth and nostrils, eyes on top of the head close to the large spiracles, very large pectoral fins, and a lateral caudal keel. They've evolved to be ambush predators, they lie in wait for prey to pass closely overhead before attacking.

Reference (Open Access):  Weigmann et al., 2023. Revision of the Western Indian Ocean Angel Sharks, Genus Squatina (Squatiniformes, Squatinidae), with Description of a New Species and Redescription of the African Angel Shark Squatina africana Regan, 1908. Biology 

From North Australia, another species of hornshark is described based on six whole specimens and a single egg case. The painted hornshark Heterodontus marshallae was previously considered to be the same with the zebra bullhead shark another well know bullhead shark from the central Indo-Pacific from Japan  to Australia, but genetic and morphological analyses indicated the sharks were different, but looking alike. The painted hornshark is endemic to northwestern Australia and occurs in deeper waters, at 125–229 m below surface.

-  Lateral view of two mature female painted hornshark Heterodontus marshallae showing small differences between individuals

The painted hornsharks is named in honour of Dr. Lindsay Marshall www.stickfigurefish.com.au a scientific illustrator and elasmobranch scientist who expertly painted all the sharks and rays of the world for the Chondrichthyan Tree of Life Project.

Reference (Open Access): White et al., 2023 Species in Disguise: A New Species of Hornshark from Northern Australia (Heterodontiformes: Heterodontidae). Diversity.

And from an unidentified shark egg collected from the deep waters of northwestern Australia, in 2011 recently helped researchers identify a new species of deep water cat shark. Called ridged-egg catshark Apristurus ovicorrugatus after its eggs, it was collected in the earlys 90 but remained unknown to date. This sharks presents white eyes, and is small in size, reaching less than a half meter in length. .

- Lateral view of female Apristurus ovicorrugatus before preserved. Photo by  CSIRO. 

Egg cases belonging to this species had been documented as early as the 1980s, but could not be matched to any species of Australian shark until recently scientists examined a shark specimen of previously uncertain identity in the CSIRO collection.

 -egg cases of Apristurus ovicorrugatus. Scale bar is 10 mm

Reference (Open Access) White,et al., 2023 What came first, the shark or the egg? Discovery of a new species of deepwater shark by investigation of egg case morphology. Journal of Fish Biology.

[sixpenceee]

Salamander grows from a single cell | source

[amnhnyc]

On the hunt for eggs today? The banded jawfish (Opistognathus macrognathus) has a mouthful! Banded jawfish dads-to-be carry eggs in their mouth. This behavior—which helps protect offspring from predators—is known as mouthbrooding. To attract females, males do a “dance” that involves a series of sweeping movements and fin-flashing. They even open their mouths as wide as possible to boast their mouthbrooding potential!

Photo: coralreefdreams, CC BY 4.0, iNaturalist

[jadafitch]

It's salamander season again.

[nenoname]

Details in Stan's letter that still haunt me

(how long will I continue thinking about a two page letter that's technically not even that long because Stan's handwriting is fricking large? .....you don't need to worry about that.)

The bro code only shows up in the Lost Journal pages, and to me Stan's message feels like it purposely echoes Ford's "miss you" in the college photo (and for some reason the message doesn't appear in the website version of the photo?) ....or alternatively Stan simply noticed how distressed Ford was about this entire thing and wanted to support him in a way so he can be sappy but without the kids knowing, or both!

Stan's claim about the Oregon lottery contradicts what the Lost Legends website said about Tate McGucket's ability to predict the winning numbers!! ...but also breaking into the Lottery HQ is definitely a very Stan thing to do and it's not the first time small gags have been retconned

Despite spending most of his letter nonchalantly destroying him, the taunt about ripping a dollar bill in half is the only part where Stan is directly responding to Bill. Maybe it's the two of them having similar ways of thinking but it's rather specific considering Bill taunts the reader about it...

And after Bill spends an entire book calling Ford Sixer despite normally using a pretty wide range of nicknames for him, Stan then spends his letter mainly referring to Ford as Sixer, even though post-Weirdmageddon he tends to use a mix of nicknames. And it's not like he'd gotten to see Bill himself for long, let alone see him steal that childhood nickname (that is only used twice in the actual show btw!). Did Ford tell him what happened or...?

With all this and the website's "still on your mind" message, what I'm getting at is my tinfoil hat theory of Stan somehow seeing some of the pages the irl readers saw, even when it should be personalised to the specific reader, and he's been lying about it for some reason. Considering that the book flat out doesn't make an attempt at convincing Soos, I find it a stretch that whatever Bill was telling Stan via the book was an attempt to convince him either.

Wouldn't be the first time Stan's skimmed through a book and lied about what it meant to him.

(...Now I kinda wanna see a story about the family reading their versions of the book and making fun of it while Stan is improvising every single one of his pages and blatantly ignoring Bill's attempts to mock and taunt him)

But also I'm fascinated by the letters that only showed up on the website (aka the Soos+Wendy+McGucket+Pacifica ones). I'm assuming that Mabel had stuck them on after Stan's letter... but they were basically eaten by the book itself because seeing Stan's letter kick-started Bill's breakdown which takes up the rest of the book

[biologist4ever]

Level of commitment and dedication of two eagles for each other and their offspring

[mindblowingscience]

A collaborative team of researchers has made a cracking discovery with the potential to make a significant impact in the sustainable recovery of rare earth elements (REEs), which are in increasing demand for use in green energy technologies. The team found that humble eggshell waste could recover REES from water, offering a new, environmentally friendly method for their extraction. The researchers, from Trinity College Dublin's School of Natural Sciences, and iCRAG, the Ireland Research Centre in Applied Geosciences, have just published their findings in the journal ACS Omega. REEs, which are essential for the technologies used in electric cars and wind turbines, for example, are in increasing demand but in relatively short supply. As a result, scientists must find new ways of extracting them from the environment—and in sustainable ways, with current methods often harmful.

Continue Reading.

[thatsbelievable]

[fossilprep]

Badlands Dinosaur Museum posters from the 84th annual meeting of the Society of Vertebrate Paleontology.

[the-wolf-and-moon]

NGC 6164, Dragon Egg

[hannahmcgill]

The caterpillar

It destroyed its egg

Yes

YES

The caterpillar is out

[img id] Digital art of a newly-hatched monarch butterfly caterpillar crawling out of its shell for the first time. The shell is translucent, covered with dimples and ridges, with a slight sheen on top. It has a huge ripped hole in one side where the caterpillar exited. The caterpillar is a pale peach color with lines of black spines running down its body. Its legs and face are black as well. It crawls over an extrem closeup view of leaf fuzz, from a milkweed leaf. Where is our little friend headed? Text in the corner is a watermark: http://hmcgill.art [/id]

[lionfloss]

Pithecopus spawned on brejo lily leaf by Lucas Botelho