#diapause
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Living in a semi-arid region, the African turquoise killifish has developed a handy biological hack to survive months-long droughts that parch its muddy ponds each year. The developing embryos of these thumb-long fish just stop growing – not long after their brain and heart begin to form. For months, they hang out in a state of suspended animation, called 'diapause', to wait out lengthy dry spells. Now scientists have figured out how the African turquoise killifish (Nothobranchius furzeri) manages this drought-defying trick: by co-opting ancient genes buried in its genome that originated more than 473 million years ago.
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Dubious superpowers. Pick one.
A. Sleep like a cuckoo bee. Simply bite on to a branch or parapet of a building & get a solid seven hours in all weather & conditions.
B. Live on nectar. Feel fully energized & get excellent nutrition on a diet of nothing but sugared drinks.
C. Diapause your life. Slow down aging, & metabolism at will during the winter months. You could sleep for days & eat very little with no ill effects.
D. Powerful sting. Sting people you don't like. Boy will it hurt 'em!
#ants#hymenoptera#bee#superpower#poll#my polls#bugs#insects#bugblr#invertebrates#antposting#myrmecology#antblr#bees#beeblr#cuckoo bee#sleep#diapause#sting people#nectar of the gods
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Merry Christmas, everyone!
A queen Vespula germanica in a deep slumber during the holiday season.
Tiniest tree and presents. Haha.
#hymenoptera#insect#entomology#wasp#wasps#apocrita#cartoon#aculeata#vespidae#vespoidea#vespinae#Vespulagermanica#Queen#Diapause#Winter#Christmas#Sleeping
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I have awakened the creatures
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NME | 17 août 2021
Manic Street Preachers : “On s’est guidés dans l’oubli” Nicky Wire et James Dean Bradfield disent à Andrew Trendell comment leur rejet des dissensions a façonné leur glacial et personnel 14ème album, The Ultra Vivid Lament. Continue reading Untitled
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#Augustus John#Blank Diary Entry#Complicated Illusions#Diapause#Don&039;t Let The Night Divide Us#Gwen John#Into The Waves Of Love#Julia Cumming#Manic Street Preachers#Manics#Mark Lanegan#NME#Orwellian#Quest For Ancient Colour#Still Snowing In Sapporo#The Secret He Had Missed#The Ultra Vivid Lament
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NME | 17 août 2021
Manic Street Preachers : “On s’est guidés dans l’oubli” Nicky Wire et James Dean Bradfield disent à Andrew Trendell comment leur rejet des dissensions a façonné leur glacial et personnel 14ème album, The Ultra Vivid Lament. Continue reading Untitled
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#Augustus John#Blank Diary Entry#Complicated Illusions#Diapause#Don&039;t Let The Night Divide Us#Gwen John#Into The Waves Of Love#Julia Cumming#Manic Street Preachers#Manics#Mark Lanegan#NME#Orwellian#Quest For Ancient Colour#Still Snowing In Sapporo#The Secret He Had Missed#The Ultra Vivid Lament
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Light Pollution Disrupts Mosquitoes' Diapause, Extending Biting Season and West Nile Virus Risk, Study Shows
Photo by Pixabay on Pexels.com A recent study by researchers at Ohio State University has suggested that light pollution in urban areas can have a significant effect on the behavior of mosquitoes that transmit West Nile virus. The study found that exposure to artificial light at night may disrupt the winter dormancy period, known as diapause, for female Northern house mosquitoes, causing them to…
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#artificial light at night#circadian rhythm#diapause#disease transmission#insect behavior#light pollution#mosquitoes#nutrient accumulation#Ohio State University#research study#urban areas#West Nile virus
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Lettre mensuelle du mois de janvier 2023
Salut à tous !! Tout d'abord, je vous présente tous mes vœux pour cette nouvelle année 2023 remplis surtout de santé et de bonheur. Les insectes sont beaucoup plus nombreux que nous (malgré une diminution conséquente de leurs populations) à cause de l'utilisation massive des pesticides entre autre. En fait, nous vivons sur la planète des insectes. Nous sommes chez eux et pas l'inverse. Ce mois-ci, je vais donc vous parler de la vie secrète des insectes pendant la saison hivernale. Nous les humains, quand la saison hivernale pointe son nez, nous avons notre maison que nous pouvons chauffer et nous habiller quand on est à l'extérieur. Mais les insectes, n'ont pas cette possibilité. Malheureusement, tous ne pourront pas survivre à la saison hivernale. Dans ce cas, ces derniers vont pondre des œufs (avant de mourir et avant qu'il ne fasse trop froid). Ensuite, ils vont les dissimuler dans des cachettes qu'ils choisiront très judicieusement afin de préserver l'espèce. Quelle intelligence ils ont, eux qui ont un cerveau de la grosseur à peine d'un grain de sésame. Comme vous pouvez le constater, ils auront avant tout le soucis de préserver l'espèce avant de se sauver eux-même (individus adultes). Quant aux autres (plus résistants), ils vont rivaliser d'ingéniosité les uns plus que les autres. Dès les premiers froids, ces derniers seront incapables de survivre. Alors, ils s'organisent. Certains iront migrer sur des latitudes plus accueillantes, dans le sud (mais ce ne seront pas les plus nombreux). En effet, pour choisir cette option, il faudra être très résistant. La plupart resteront sur place. En résumé, trois solutions s'offriront à eux : La migration, la reproduction avant de mourir et la diapause.
Le papillon Monarque futura-sciences.com
MIGRATION
Comme déjà indiqué ci dessus, cette pratique sera la moins utilisée. En dehors de certains papillons comme par exemple le monarque, le vulcain et la belle-dame qui auront la capacité de parcourir (comme les oiseaux le font) de très grandes distances, ils organiseront leurs migrations.
CEUX QUI SE REPRODUIRONT AVANT DE MOURIR
Dans la catégorie des insectes qui n'auront pas la chance de pouvoir survivre, il y aura par exemple, la libellule, la mante religieuse, le cricket, certains papillons et les sauterelles. Ce seront ceux-la qui se reproduiront avant de rendre l’âme comme déjà indiqué ci-dessus. Comme quoi, la nature est bien faite. Elle n'a pas besoin de nous les humains, mais nous, nous avons besoin d'elle. A noter que les larves des libellules s'enfouiront dans la vase des plans d'eau comme par exemple dans les mares.
LA DIAPAUSE
Dans ce cas, les insectes rentreront dans un état léthargique avancé ou du moins pour certains les organismes tourneront au ralenti, c'est à dire qu'ils ne mangeront, ne bougeront et ne respireront presque plus. En résumé, leur métabolisme fonctionnera au minimum afin d'économiser de l'énergie. Vous pourrez en trouver dans les vérandas, les garages, les caves, éventuellement sous les pierres dans votre jardin et pourquoi pas chez vous comme par exemple la coccinelle, la chrysope et l'araignée (qui aime tant nos intérieurs). D'autres comme le carabe vont préférer s'enfouir sous terre, sous la mousse ou bien encore sous un petit abris qu'il aura construit lui-même avec du bois en décomposition. Le gendarme s'abritera sous l’écorce de ses arbres et arbustes préférés ou bien encore, il pourra lui aussi s'inviter chez vous à la recherche d'un peu de chaleur. Notre amie la limace s'enterrera dans le sol dès que la température descendra en dessous de 8° car à partir de 5° elle s'immobilisera et à -2° elle mourra. C'est pourquoi elle ira s'enfouir avant qu'elle ne puisse plus le faire. L'orvet fragile qui fait partie de la famille des lézards et non des serpents comme certains le pensent, se protègera du froid à la saison hivernale en se mettant à l'abri dans des galeries ou des terriers de rongeurs abandonnés. Il pourra également s'abriter dans le tas de compost de votre jardin. Quant à la scutigère véloce, elle pourra trouver refuge sous des pierres ou bien encore sous des tas de bois. Il ne sera pas rare que certaines entrent chez vous. Et pour terminer, les fourmis. Que deviennent elles pendant la saison hivernale ? Elles rentreront en diapause elles aussi. Elles ne cesseront par leurs activités. Mais cela se passera au ralenti. Elles resteront bien au chaud dans les fourmilières qu'elles ont construite elle-même avec suffisamment de réserve pour passer la saison hivernale. Comme vous le savez, les fourmis sont de très grosses travailleuses pendant la bonne saisons, donc pendant cette période froide, on peut les considérer comme étant en vacances bien méritées. Elles ont bien droit ces valeureuses et courageuses fourmis à un peu de repos avant de recommencer à la saison printanière. Il y a d'autres insectes qui pratiquent également la diapause. Si je vous les citais tous, ce serait un vrai roman que je vous proposerais. En fait, ce ne sont que des exemples. Mais sachez que la faune est fort nombreuse dans le sol de votre jardin, sous les feuilles mortes ou bien encore sous les écorces des arbres et des arbustes... Etc... Etc...
detentejardin.com
CONSEILS
Afin de protéger tous ces insectes pendant la saison hivernale, dans votre jardin vous pourrez leur installer des hôtels à insectes. Laissez les feuilles mortes au sol (vous aurez le temps de les ramasser à la saison printanière), laissez trainer des morceaux de bois dans votre jardin. Cela permettra à certains insectes de se mettre à l'abri. Si vous avez des pierres, faites en des tas disséminés un peu partout dans votre potager, dans votre verger ou bien dans votre jardin d'agrément. Étant donné que vous n'aurez pas ce travail de nettoyage à effectuer (ramassage des feuilles mortes) pendant la saison hivernale, profitez-en pour réfléchir à votre plan de jardin 2023 ou bien pourquoi pas effectuer des constructions dans votre jardin (carrés, hôtels à insectes.. Etc..).
EN RÉSUMÉ
Notre nature est très bien faite et elle a pensé à tout. Vous ne trouvez pas ? Il serait tant d'y penser en la bichonnant un maximum. Laissez vivre tout ce petit monde en paix. La nature fera le reste. Certains insectes seront des alliés du jardinier pendant que d'autres seront des parasites. Les premiers mangeront les seconds et de cette façons les différentes populations s'équilibreront d'elles-même. Donc vous l'aurez compris, pas besoin de produit chimique dans votre jardin. Après, il y a certains insectes qui ne seront pas mangés car il n'existe pas de prédateurs. Alors dans ce cas, vous devrez utiliser soit des purins, des décoctions ou des infusions appropriés ou bien encore des plantes répulsives comme par exemple l'ail, la lavande ou bien encore l'absinthe et bien d'autres encore. Et pour terminer, je vous propose cette vidéo de ArteTV https://youtu.be/v2IR1fF8u5Y Et cette autre vidéo de L'instant Biodiv' https://youtu.be/Ne9lK70WM2I Si vous souhaitez recevoir une alerte par mail à chaque nouvel article mis en ligne, Vous devez vous inscrire sur le site Abonnement à la lettre mensuelle... vous pouvez également vous abonner à la lettre mensuelle du site. Si vous avez aimé cet article n’hésitez pas à le partager sur les réseaux sociaux en utilisant les boutons ci-dessous. Read the full article
#absinthe#ail#araignée#carabe#chrysope#coccinelle#compost#cricket#décoction#diapause#feuillemorte#fourmis#gendarme#infusion#insecte#lavande#libellule#limace#mantereligieuse#Migration#nature#oeuf#orvetfragile#papillon#pesticide#plandevotrejardin#planètedesinsectes#planterépulsive#purin#reproduction
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[Image Description: The first three photos show a P. Imparis colony living in a test tube. The colony is very healthy probably 100+ workers and lots of brood. These are little brown ants, who live deep underground. Sometimes the workers store food in their gasters which can expand to a large tear drop shape.
You can see the queen who is about twice the size of the workers but still very small. She has a large brown gaster and a dainty head.
The last photo are black carpenter ants living in a cave like formicarium. They have many piles of white eggs which they are cleaning and arranging on the humidity pot. ]
(Did you know you can add alt text to your images by clicking the "..." symbol in the lower-left corner of an image? Image descriptions make your posts enjoyable for many more people. Having the description attached to the image is the best way and only the OP can do this, but I also often add descriptions when I reblog cool art and ant stuff. So, if you can't add a description yourself, there are people who will help.)
So I stuck the P. Imparis colony under my snakes LED light and that did the trick, they moved so fast. Good lighting for photos too ;)
Attempting the same with the C. Subarbatus but they're more stubborn and not in a test tube...
Checked in on my C. Pennsylvanicus colonies too, probably going to fridge the lot of them next week!
Colony 4 has alot of dead inside their nest, they still look fine and queen is well but I don't know why they are dumping their dead in the nest, it's not that over sized for them... Not much I can do though.
Colony 1:
All I can say; "the floor is larva"
These guys are going to need a new nest soon as I take them out of hibernation and all those lil fuckers turn into pupa. They're going to have an EXPLOSION in population!
#camponotus#ant#antkeeping#c.pennsylvanicus#Camponotus pennslyvanicus#antblr#antposting#entomology#insectblr#bugblr#p. imparis#winter ants#carpenter ants#diapause#described
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Bugtober 2024- Day 27: Past
A look into one of the first moments after Apollyon was found by Pan. Being a chef and not a medic, Pan rushed them over to Isau as quickly as he could. Apollyon was in a...pretty bad state, but thankfully Isau was able to help it out and Pan was determined to make sure the moth they found ended up okay.
#bug fables#bug fables oc#oc: apollyon#oc: pan#bugtober#Welcome back to Aither rambles about its OCs:#Apollyon wasn't exactly in the best state even before it fled from Wayfarer's Respite. Having to go as far as it went did a number on it.#I say they “fainted” since it gets the point across as a trope but it would be more accurate to say that they went into a state of diapause#They stay in it for a while- even after Pan and Isau helped it- and when they *do* finally wake up they're very confused to be in a house.#Which...is understandable.#Apollyon also very much doesn't trust Pan at first. Also understandable! But maybe not the happiest point in the pair's relationship.#Though Pan making sure Apollyon is fed and safe does wear down the walls it built up and eventually it opens up more to him!#alt text in image#my art
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When I tell you my animal-loving, nerdy, zookeeper brain went BONKERS when Aabria said the phrase “embryonic diapause”, that is not an exaggeration. I exploded in excitement. Not enough people know about this INCREDIBLE trait that so many animals have. What a cool way to try and ensure the survival of a species.
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What if, instead of dealing with winter, everyone just went inside and took some nice long naps in a nice big pile until the cold goes away?
Has anyone ever considered the merit of that plan?
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If picos school fixation makes me get over my arachnophobia being triggered by pictures of spiders bc I keep having to see them when researching for my penilian designs I will kill someone /silly
#current philosophy is that fc penilians are 'tarantulas with praying mantis body plans that run on cat software' BFKAHSJA#anyway i was thinking about gp and damiotis prompts regarding penilians being coldblooded#not a massive problem bc their home planet is perpetual summer. but come to earth and become like WAY smaller#and suddenly this is a problemVDKAJSKQ#cassandra coming home with the worst brainfog of her life because her body desperately wants to diapause: WHAT KIND OF PLACE IS THIS#💛
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Experimental evidence of dispersal of invasive cyprinid eggs inside migratory waterfowl
Ádám Lovas-Kiss, Orsolya Vincze, Viktor Löki, and Balázs András Lukács
Fish have somehow colonized isolated water bodies all over the world without human assistance. It has long been speculated that these colonization events are assisted by waterbirds, transporting fish eggs attached to their feet and feathers, yet empirical support for this is lacking. Recently, it was suggested that endozoochory (i.e., internal transport within the gut) might play a more important role, but only highly resistant diapause eggs of killifish have been found to survive passage through waterbird guts. Here, we performed a controlled feeding experiment, where developing eggs of two cosmopolitan, invasive cyprinids (common carp, Prussian carp) were fed to captive mallards. Live embryos of both species were retrieved from fresh feces and survived beyond hatching. Our study identifies an overlooked dispersal mechanism in fish, providing evidence for bird-mediated dispersal ability of soft-membraned eggs undergoing active development. Only 0.2% of ingested eggs survived gut passage, yet, given the abundance, diet, and movements of ducks in nature, our results have major implications for biodiversity conservation and invasion dynamics in freshwater ecosystems.
Read the paper here:
Experimental evidence of dispersal of invasive cyprinid eggs inside migratory waterfowl | PNAS
#zoology#science#cyprinidae#fish#ichthyology#duck#anatidae#anseriformes#bird#ornithology#animals#nature
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au fics part one: true aus
alright i'm a little late to the current round of @spnficrecfest. on account of I Hauve Covid. that's also why i missed the long fic / short fic round, and i will go back and do that at some point, but not yet. anyway. two fic rec lists for this round. one for true aus, and one for canon-a-little-to-the-left aus.
i'm actually not a huge fan of true aus, especially not for spn, but there are a few really fabulous ones out there. these are some of those.
in order of wordcount.
sparks fly by anandroidinatutu, 1k
cas and meg as teenagers in court ordered group therapy >:3.
it's a wonderful life by ghostyouknow, 3k, chose not to warn
weird and amazing megstiel fic. a pwp with worldbuilding, somehow. the omegaverse zombie apocalypse. this is a serious favorite for me, i've read it many times. just top tier megstiel fic.
25¢ pocket guardian angels by hopelessheathen, 13k
oh my god, this fic. this fic. this is a VERY weird one in the best ways. like it's just a traditional destiel romance but also it's like. wondrous. fantastical. a joyous read. i would also personally recommend the podfic by gravelly, it's lovely.
with sure certainty by andimeantittosting, 16k
extremely cute destiel regency au. that's it.
embryonic diapause anthology by wayward_demonbard, 30k
a series of four distinct destiel aus centered around the concept of embryonic diapause. all of them are weird, creative, and angsty. some of the more unique fics i've come across.
issues by everandanon, 63k
the thing about me is i love mess and i love drama. and that means i love issues. it's just a plain old mundane au, but it's all miscommunication and character drama in the most fun ways. and i love cas.
a beginner's guide to communing with the dead by suspiciousflashlight, 77k, chose not to warn
i know i've been trying not to rec fics that are too popular, but there comes a point where you've reread a fic twice to remind yourself that you like fanfiction where you have to be honest and rec it. dean is a magic cop and cas is a creature he summons, illegally. they fight crime.
the dean winchester beat sheet by saltyfeathers, 144k
hey man, it's beat sheet. you didn't think i was gonna not recommend beat sheet, did you? if you haven't read beat sheet, you should read beat sheet. come on now.
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Abroad with the Broad Shelled Turtle
Chelodina expansa, more commonly known as the broad shelled turtle, is one of the largest freshwater turtles in Australia. The length of their shells can reach up to 50 cm (19.6 in), and their neck accounts for an additional 60-80% of their total length. Because of this length, C. expansa tucks its head in sideways as opposed to pulling it directly into its shell. At maximum, females reach a mass of 6 kg (13.2 lbs), while males only typically weigh about 4 kg (8.8 lbs). The top of the shell, or carapace, is dark brown or green, while the underside is a light cream; the same is true for the broad shelled turtle's head, neck, and legs. The feet are webbed, and have large claws which help adults to dig or fend off predators.
While they spend the winter buried in the mud, the broad shelled turtle is most active during the summer months, from November to March. During this time they are almost entirely aquatic, rarely emerging from the water even to bask. This species lives throughout the river basins of eastern Australia, and can be found in rivers, dams, lakes, and wetlands with plenty of vegetation cover. C. expansa is entirely carnivorous, feeding on crustaceans, aquatic insects, fish, and frogs via ambush, and carrion whenever it can find it. To locate prey, they have a keen sense of smell. Adults are not usually predated upon due to their thick shells and sharp claws, but eggs and juveniles are often prey for foxes, dingos, birds, rakalai, and large fish.
C. expansa nests in the winter, beginning in late February or March. Outside the mating season, individuals are generally solitary, but aggressive territoriality has not been observed. When mating time roles around, males seek out females to mate with; following the encounter, the female climbs out onto the bank and digs a nest for a clutch of anywhere from 5 to 28 eggs. To seal the nest, she then slams her body into the re-piled sand and mud, compacting it into a plug that will remain intact until the following year.
Incubation takes about 360 days, though some nests have been recorded as hatching at 500 days; this process is exceptionally slow due to the two periods of diapause, or developmental delays, that embryos pass through in order to survive the winter. Juveniles hatch in the spring, and emerge from the nest at the first heavy rain. It's unknown how long these turtles can live in the wild, but given their slow growth rate and adult invulnerability it's likely that they can live in excess of 20 years.
Conservation status: The IUCN consideres the broad shelled turtle to be Near Threatened, due primarily to habitat loss and high rates of nest predation by introduced foxes.
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Photos
Claire Treilibs
Catherine Heuzenroeder
Shanna Bignell via iNaturalist
#broad shelled turtle#Testudines#Chelidae#snake-necked turtles#Austro-South American side-neck turtles#side-neck turtles#turtles#reptiles#freshwater reptiles#river reptiles#lake reptiles#wetland reptiles#Oceania#Australia#East Australia
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