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science

Two eagle rays gave birth without encountering any males in 2 years

FfFfFfFF

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Two eagle rays have surprised New Zealand aquarists and bemused scientists by giving birth without any males in their tank.

Nibble and Spot, both female and housed in the walk-through tunnel display at the SEA Life Kelly Tarlton’s Aquarium in Auckland, had pups on New Year’s Eve despite not having been near a male in two years.

Andrew Christie, the curator of the aquarium, believed the most likely explanation is that the rays had stored sperm from their last encounter.

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[...]

But in the case of the surprise eagle rays at Kelly Tarlton’s, Dutilloy believed the more likely explanation was parthenogenesis : a natural process of asexual reproduction, where an egg develops into an embryo without being fertilised. Compared to sharks, Dutilloy said sperm storage was relatively uncommon in rays, while parthenogenesis had been documented in spotted eagle rays – a close relative of Nibble and Spot’s species.

 

https://www.theguardian.com/world/2021/jan/22/new-zealand-eagle-rays-astonish-aquarium-with-mystery-births

Edited by FfFfFfFF
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  • YAAAS 2
  • Love 5
  • Shook 2

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Magneto

Not me reading "rave gays". Anyway, congrats to them:vegas:

Free my mind
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CubbyGaga

“Egg develops into an embryo without being fertilized”

wHAT 

how is that possible 

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Sneaky Oliver

But it's not completely abnormal. Some insects can 'give birth' without being fertilized too.

A reverse Sneaky Oliver-ian expedition

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uo111
3 minutes ago, Esteban said:

Jesus is an eagle ray :pray:

God right now: “****, I pressed the wrong button :omg:

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Esteban
4 minutes ago, uo111 said:

God right now: “****, I pressed the wrong button :omg:

Imagine in is this world in loss of values and spirituality if millions of people make pilgrimage to see a damn fish :ladyhaha:
It will be as absurd as the world is, and I'm living for this! 

Praised be the ray! (of light) :tony:

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TasteLikeWhiskey
32 minutes ago, Esteban said:

Jesus is an eagle ray :pray:

The Virgin MaRAY is real :vegas:

Do not think I underestimate your great concern
  • YAAAS 1

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Tinnitus15
48 minutes ago, CubbyGaga said:

“Egg develops into an embryo without being fertilized”

wHAT 

how is that possible 

It is...in bees and other insect there’s a fertilisation called parthenogenesis which is know 

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Lady Papa

They don't know if they hadn't encountered a male, those eagle rays could have received a "U up?" text in the middle of the night and nobody would have been the wiser :yennefer:

Edited by Lady Papa
Formerly known as LadyGoo

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Diamond Heart

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But baby, I just need one good one Tuesday

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