The activity was reported in zebra sharks at Shedd Aquarium in Chicago.
, focused on endangered zebra sharks at Shedd Aquarium in Chicago. Contrary to earlier understandings, the study revealed an example of a female zebra shark reproducing via parthenogenesis, even though there were healthy, reproductive males in the same enclosure.The efforts started in 2004 with genetic testing of zebraat the aquarium to confirm which of the sharks were the parents of the offsprings present.
Genetic analysis of offspring born to these sharks in 2018 revealed that they didn't match any mature males in the aquarium. "In addition to having genetic markers in common with their mother but none of the potential fathers, the pups had identical homozygous copies of some alleles," said Kevin Feldheim, a researcher at Chicago’s Field Museum, the study’s co-author.
"This study is just the beginning of our understanding of the occurrence of this genetic phenomenon in zebra sharks,” said Watson. Researchers say such efforts will help in theParthenogenesis has been observed in several elasmobranch species, primarily in public aquaria. The majority of cases of parthenogenesis have occurred either when females were held without males or once a male was removed from a female's habitat.
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