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Parthenogenesis, a form of asexual reproduction, is explored across various species including goblin spiders, sharks, rays, amphibians, crocodilians, and squamate reptiles. This reproductive strategy allows organisms to produce offspring without male fertilization, raising questions about genetic diversity and adaptability. Notable instances in captive environments and the evolutionary implications of parthenogenesis in ancient reptiles are discussed, alongside research on the New Mexico whiptail lizard.
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Parthenogenesis is a form of asexual reproduction where an organism produces offspring without male fertilization
Heteroonops spinimanus
Heteroonops spinimanus is a species of goblin spider that lacks observed males and is believed to reproduce parthenogenetically
Triaeris stenaspis
Triaeris stenaspis is another species of goblin spider that has been confirmed to reproduce parthenogenetically in laboratory studies
The discovery of parthenogenesis in goblin spiders raises questions about the reproductive biology and potential consequences on genetic diversity and population sustainability
Bonnethead Shark
A female bonnethead shark at the Henry Doorly Zoo in Nebraska produced a pup without male fertilization, confirmed through genetic testing
Blacktip Shark
Parthenogenesis has also been documented in blacktip sharks at institutions such as the Virginia Aquarium & Marine Science Center and the Belle Isle Aquarium
Zebra Shark
Zebra sharks have also been observed to reproduce parthenogenetically in captivity
The lack of genetic diversity resulting from asexual reproduction in sharks could have negative impacts on their ability to adapt to environmental changes and human-related threats
Careful management of shark populations exhibiting parthenogenesis is necessary to ensure their long-term survival
Rays
Parthenogenesis has been observed in rays, such as a female round stingray that became pregnant after years of isolation from males
Amphibians
While less documented, parthenogenesis has also been recognized as a mode of reproduction in amphibians
The occurrence of parthenogenesis in various species, including crocodilians and squamate reptiles, suggests that it may have been a trait of ancient reptilian ancestors
The New Mexico whiptail lizard, an all-female species that reproduces exclusively through parthenogenesis, offers valuable insights into the genetics and potential impact of this reproductive strategy on biodiversity and species conservation strategies
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______ is an intriguing type of asexual reproduction that occurs without male fertilization.
Parthenogenesis
01
Certain ______, particularly from the family Oonopidae, show this unique reproductive method.
goblin spiders
02
The species ______ and ______ are known for their all-female populations, hinting at parthenogenetic reproduction.
Heteroonops spinimanus
Triaeris stenaspis
