Navigation Links
Researchers Document First Case of Virgin Birth in Sharks

Researchers have documented the first case of virgin birth in cartilaginous fish, after busting the mystery surrounding the birth of a shark in an aquarium, that had only female sharks which had no contact with a male shark for three years.

The birth of the pup at Omaha's Henry Doorly Zoo, in the US, in December 2001 led to many conclusions including a possible insemination in one of the female sharks in the aquarium.

Female sharks have an organ that can store sperm, but a three-year storage would have been really extraordinary to believe.

The insemination theory still could be believed, but scientists could not imagine asexual reproduction among sharks.

"Because it was even more difficult to imagine asexual reproduction in a shark," New Scientist quoted Paulo Prodohl of Queen's University Belfast in Northern Ireland, as saying.

Researchers at Pew Institute for Ocean Science in the US led by Demian Chapman of the, used a DNA fingerprinting method akin to human paternity tests. The technique was determined to identify the mother.

When they deducted the mother's input from the pups DNA to determine the father, to their surprise there was nothing left.

"In this particular case, after we subtracted the mother's DNA, there was nothing left. It was fantastic," says Prodohl.

The researchers then concluded that the pup had no father and had a virgin birth. This is the first recognized instance of an asexual reproduction in cartilaginous fish. Later, the pup was killed by another fish in the aquarium.


'"/>




Page: 1

Related medicine news :

1. Researchers urge caution in using ear tube surgery
2. Researchers Scale to assess the Severity of Epilepsy in Kids
3. Researchers trick Alzheimers Enzyme
4. Researchers find new HIV hiding place
5. New Hair in 15 Days Could Now Be A Possibility Say Researchers
6. Researchers developed world’s smallest toothbrus
7. Researchers discover receptor cells that can cause epilepsy
8. 15 Anti-SARS Drugs Identified By China-Europe Team of Researchers
9. Researchers reversed the process of memory loss
10. Researchers Identify Key Gene That May Help Brain Treatment
11. Researchers Discover Protein That Causes Malaria
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/27/2017)... ... June 27, 2017 , ... ... according to survey data released today by the American Society for Dermatologic ... indicates the percentage of consumers considering a cosmetic medical procedure has doubled ...
(Date:6/27/2017)... (PRWEB) , ... June 27, 2017 , ... Harbour ... manage token assets on the Ethereum blockchain, has released their technical specifications . ... now, there has been little systematic approach for determining which offerings will garner the ...
(Date:6/27/2017)... ... June 27, 2017 , ... The Congressional Budget Office (CBO) projects ... replace the 2010 Patient Protection and Affordable Care Act (ACA), would result in 22 ... expected under current law. , More than 20 million Americans have gained health insurance ...
(Date:6/27/2017)... ... ... From June 20-22, EarQ and Widex held an exclusive training ... EarQ is headquartered. , Together, the organizations educate hearing care professionals on how ... the latest in hearing technology. At the event, EarQ members got an in-depth ...
(Date:6/27/2017)... ... ... Two residents from the Gardant-managed assisted living and memory care communities in South ... protect Medicaid funding. , The video, which was produced by the American Health Care ... Cathy Schwarz, a couple who is still able to see each other every day ...
Breaking Medicine News(10 mins):
(Date:6/7/2017)... , June 7, 2017  Novavax, Inc., (Nasdaq: ... of two Phase 2 trials of its RSV F protein ... child bearing age have been published in the journal ... have been shared in prior scientific conferences). The Company previously ... April 2014. Novavax is developing the RSV F Vaccine with ...
(Date:6/2/2017)... -- NxStage Medical, Inc. (Nasdaq:  NXTM), a leading medical technology company focused ... positive biochemical outcomes related to more frequent hemodialysis with ... be presented at the ERA-EDTA Congress being held June ... The research was conducted by the ... Europe (KIHDNEy) Cohort team with ...
(Date:5/29/2017)... Biotechnology Ltd. (NASDAQ: APOP ; TASE: APOP), a ... of stem cells, today provided a corporate update and ... 31 st , 2017. "We are ... of 2017," said Dr. Shai Yarkoni, Chief Executive Officer. ... the first blood cancer patient in the recently initiated ...
Breaking Medicine Technology: