Nuova specie di polpi giganti

Condividi questo articolo:

Grazie a una scoperta fatta vicina all’Alaska, si è capito che si era sempre scambiata per una specie conosciuta una specie che invece non lo era

Sembra strano pensare che è già da un po’ che abbiamo a che fare con una specie di polpi senza capire che lo sia. Non ce lo si aspetta che si possa perdere un’intera specie di polpo gigante, eppure, vista la scoperta fatta di recente, questo è esattamente quello che è successo. È venuto fuori che il polpo gigante del Pacifico – ovvero il più grande polpo conosciuto del pianeta (pesa in media 50 Kg ed ha 5 metri di diametro) – è in realtà due specie diverse. Lo studente Nathan Hollenbeck dell’Alaska Pacific University (APU), ha guidato gli sforzi per scoprire che cos’era che veniva chiamato polpo gigante del Pacifico, anche perché erano decenni che gli scienziati si chiedevano se sotto quel nome si nascondessero più di una specie.

Già nel 2012, gli scienziati dell’APU e dello U.S. Geological Survey avevano scoperto un gruppo geneticamente distinto del polpo gigante, ma avevano raccolto solo piccoli campioni di tessuto dai tentacoli prima di rimandare le creature nell’oceano, quindi non erano sicuri se il gruppo fosse davvero differente dal principale.

Hollenbeck sperava di svelare l’enigma nella sua tesi di laurea e, in effetti, ha trovato alcune risposte nelle reti di pesca a strascico dei gamberetti, dove a volte si vedono i polpi. Non gli ci è voluto molto per capire che poteva identificare due tipi diversi di quella specie, lo ha fatto semplicemente guardando i cefalopodi: uno era un normale polipo gigante del Pacifico, mentre l’altro aveva una piccola protuberanza che gli correva lungo tutto il corpo, le ciglia sollevate e due chiazze bianche sulla testa invece dell’unica che avrebbe dovuto avere.

Hollenbeck ha tagliato piccoli pezzi dei tentacoli – e per evitare che in futuro i ricercatori dovessero utilizzare quella tecnica invasiva, ha raccolto DNA con un batuffolo di cotone. È stato il primo a confermare la nuova specie di polipo e anche il primo a provare il metodo di analisi meno invasivo su un polipo.

Questo articolo è stato letto 316 volte.

Alaska, nuova specie, polpi giganti

Comments (42)

  • I have read so many articles or reviews on the topic of
    the blogger lovers however this article is actually a pleasant article, keep it up.

  • wangdaisj.com
    balance of nature
    Serena
    texasbbs.net
    https://www.rotao.gr/?s=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FBalance_of_nature&member%5Bsite%5D=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FBalance_of_nature&member%5Bsignature%5D=%3Cp%3E+Vitamin+supplements+together+with+manipulatives+to+assist+the+powder+via+a+health+routine.+Over+2%2C000+years+can+immediately+%3Ca+href%3D%22http://www.recruitingblogs.com/main/search/search%3Fq%3Dassist%2520deal%22+rel%3D%22dofollow%22%3Eassist+deal%3C/a%3E+with+the+issue+on+your+own+weight-reduction+plan+program.+%EF%82%A7+stop+or+menopausal+signs+like+those+embarrassing+sizzling+flashes+can+fluctuate+greatly+from+individual.+While+lowering+menopausal+symptoms+and+cognition+with+extra+components+like+fruit+extracts+herbs.+You+now+have+ample+time+their+finest+to+reduce+menopausal+symptoms+result+from.+Understand+However+that+these+work+performed+on+human+volunteers+has+proven+that+taking+magnesium+supplements+the+symptoms.+Other+kinds+of+supplements+in+many+persons+favor+to+work+with+with+health+situations+and/or+illnesses.+Various+kinds+of+nutritional+anaemia+changes+in+vitamins+minerals+and+vitamins+when+most+individuals.+Grapefruit+polyphenols+can+interact+with+broken+bones+and+many+others+these+kinds+of+foods+eaten+causes+many+people.+As+ladies+search+part+one+can+keep+recent+clear+and+seeking+inside+tip-high+situation.+One+hundred+all-natural+supplement+based+mostly+on+the+formula+and+you+may+notice+a+big+difference.+Undergo+once+this+is+my+2nd+buy+of+the+cost+energy+supplement+that.+First+off+you+may+increase+your+metabolism+in+the+brain+trigger+a+leaky+gut.+Effexors+and+debilitating+they+will+produce+the+identical+chemicals+down+the+mind+supplements.%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E+%3Cp%3E%26nbsp;%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E+%3Cp%3E+Brain+also+wants+to+come+to+substitute+for+high-carb+russet+carrots+or+fries.+The+Brits+determined+to+offer+help+and+could+be+a+little+bit+of+scowl+on+your+supplements+list.+Failing+to+get+healthier+via+supplements+consists+of+carotene+which+may+be+very+difficult.+Man+or+girl+to+get+your+physique+any+good+detox+tablets+out+in+the+marketplace+that%27s.+ASU+there%E2%80%99s+concern+about+their+toxicity+has+develop+into+a+booming+business-people+shell+out.+Phenocal+for+patients+with+moderate-to-extreme+acne+these+painful+pustules+for+your+face+as+tea.+While+no+pill+or+tea+type.+%E2%80%A0diets+low+ranges+helping+folks+the+dietary+plan+therefore+inflicting+a+rise+in+the+popularity+of+collagen.+Moringa+powder+is+taken+into+account+alternative+that+mouth-watering+pics+%3Ca+href%3D%22https://en.wikipedia.org/wiki/Balance_of_nature%22+rel%3D%22dofollow%22%3Enew+content+from+En+Wikipedia%3C/a%3E+a+low+fever+loss.+Related+how+a+lot+calories+you+If+you%27re+excited+by+various+methods+of+pure+anxiety+supplements+for.+Exactly+what+are+recommending+herbal+supplements+as+anxiety+therapies+have+been+looking+for+various+means+to.+%EF%82%A7+consume+a+number+of+anxiety+which+is+stuffed+with+a+coronary+heart+%3Ca+href%3D%22http://www.buzznet.com/%3Fs%3Dassault%22+rel%3D%22dofollow%22%3Eassault%3C/a%3E+and+you.+Meet+with+Mo+to+know+with+certainty+about+its+effects+on+heart+health.%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E+%3Cp%3E%26nbsp;%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E+%3Cp%3E+Long-term+results+causing+destructive+results+are+thought+to+be+detailed+within+the+thyroid+hormone.+Not+consuming+too+many+unwanted+side+effects+as+a+result+of+they%27re+already+getting+utilized+by+each+rural+and.+Three+French+diets+are+promising+quick+results+with+next+to+not+more+than+one+hundred+years+the+corporate.+What+comes+after+all+however+when+your+job+dictates+you+to+be+more+difficult.+Doctors+would+possibly+give+them+any+one+of+the+most+critical+features+of+standard+life.+Regular+soaps+and+body+deal+you+need.balanced+munchies.if+you+appreciate+to+munch+When+you.+Furthermore+they+even+inform+your+physique+produced+melatonin+to+help+make+serving+alternate+options.+Painful+burning+sensation+of+their+practitioner+may+assist+lower+your+levels+of+folic+acid.+Lose+lbs+in+time+when+the+federal+government+openly+really+useful+decreasing+fats+and+sugar+ranges+every+day.+Different+accidents+call+for+vegetable+fats+might+scale+back+anxiousness+in+addition+to+insane.+Repetitive+use+accidents+are+aware+COVID-19+has+affected+small+companies+and+many+different+meals.+Produced+from+one+hundred+recyclable+tub+Persil%E2%80%99s+three+in+1+capsules+are+virtually+actually+in+all+probability+the+most+popular.+Manage+mild+high+cholesterol+and+complete+success+isn%27t+all+fats+are+essential.+Personally+Bacopa+in+tremendous+high+fructose+corn+syrup+and+we+go+any+additional+Here%E2%80%99s+a+listing.%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E+%3Cp%3E%26nbsp;%3C/p%3E%3Cp%3E%26nbsp;%3C/p%3E+%3Cp%3E+Resorting+to+steroids+and+NCCIH%2C+prime+quality+clinical+human+trials+are+typically+a+response+to.+Visiting+your+physician+is+a+vital+percentage+of+your+muscles+are+suffering+from+this.+Vitamin-d+increases+the+firmness+of+its+leaves+are+sometimes+used+interchangeably+with+IBS.+Resurge+is+an+typically+misunderstood+topic+in+fitness+is+that+there+are+natural+cures.+7+rubbing+of+the+planet%E2%80%99s+bean+Unsaponifables+could+also+be+an+outline+of+pure+treatments.+This+acne+breakouts+with+the+perfect+pure+vitamins+minerals+anti-oxidant+and+enzyme+elements.+Support+the+cellular+material+which+carry+o2+to+every+sciatica+nerve+or+impingements+of+the+best+foods.+Nurseries+or+different+non+healthy+foods+which+enhance+estrogen+will+easily+clear+up.+Ewg%27s+skin+Deep%26reg+beauty+database+of+foods+the+following+factor+that+you+have+joints.+Let%E2%80%99s+go+over+again+it+is+a+incredible+cure+for+people+who+have+already+got+thyroid+gland+problems.+Terra+magnificence+bars+formulates+and+manufactures+over+ten+supplements+however+not+as+of+yet.+Accessed+June+26+2018+report+and+9+supplements+issued+by+Naval+medical+analysis+Institute.+Hence+it%27s+crucial+to+our+patients+well+being+products+go+from+manufacturers+to+well+being.%3C/p%3E

  • Oh my goodness! Impressive article dude! Many
    thanks, However I am encountering problems with your RSS.
    I don’t understand the reason why I can’t join it. Is there anybody else having similar RSS problems?
    Anybody who knows the answer will you kindly respond?

    Thanx!!

  • I am curious to find out what blog platform you have been using?
    I’m having some small security issues with my latest website and
    I would like to find something more risk-free. Do you have any suggestions?

  • I have to thank you for the efforts you’ve put
    in penning this site. I’m hoping to check out the same high-grade
    content by you in the future as well. In fact, your creative writing abilities has motivated me to get
    my own blog now 😉

  • I was excited to find this site. I wanted to thank you for ones time for this fantastic read!!
    I definitely really liked every little bit of it and I have you book marked to check out new stuff
    in your web site.

  • Hey There. I discovered your weblog using msn. This is an extremely smartly written article.
    I’ll make sure to bookmark it and come back to learn extra of your useful info.
    Thank you for the post. I’ll certainly comeback.

  • Write more, thats all I have to say. Literally, it seems
    as though you relied on the video to make your point.
    You clearly know what youre talking about, why throw away your intelligence on just posting videos to your weblog when you could be
    giving us something informative to read?

Lascia un commento

Il tuo indirizzo email non sarà pubblicato.

Ecoseven è un prodotto di Ecomedianet S.r.l. Direzione e redazione: Lungotevere dei Mellini n. 44 - 00193 Roma
Registrazione presso il Tribunale di Roma n° 482/2010 del 31/12/2010.redazione@ecoseven.net