Could A Cockroach Survive A Fall From Space?
Could a Cockroach Survive a Fall From Space?
The results are bad news, at least for those of us who aren’t too fond of cockroaches.
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3000 year old petroglyph of a man running away from a big snake. With erection. It is one of the many Rock carvings in Tanum, Sweden and was painted red so its easier for tourists to see.
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There is evidence to suggest that chimpanzees, like humans, can experience a phase similar to menopause. Menopause is a biological phenomenon in which females cease to be fertile and undergo hormonal and reproductive changes. In the case of chimpanzees, studies have observed that female chimpanzees also go through a reproductive senescence, a period of time when they cease to reproduce.
Research conducted on wild chimpanzee populations, particularly in East Africa, has shown that female chimpanzees experience a decline in fertility and reproductive success as they age. The age at which chimpanzee females experience reproductive senescence is estimated to be around the mid-30s to early 40s, which is similar to the age range at which human females typically go through menopause.
By the way, the reasons behind reproductive senescence in chimpanzees are not fully understood, but it's believed to be related to physiological changes and possibly ecological factors.
Besides humans and chimpanzees, there are a few other species of animals where females experience menopause or a similar reproductive phenomenon. Here are some examples:
Orcas (Killer Whales): Female killer whales are known to go through menopause. The reasons behind this are not entirely clear, but it is suggested that older females, post-reproductive, play a crucial role in supporting and guiding their offspring and the larger pod, contributing to the survival and reproductive success of their kin.
Short-finned Pilot Whales: Similar to killer whales, short-finned pilot whales also exhibit post-reproductive lifespans, where older females cease reproduction and contribute to the social structure and survival of the group.
Narwhals: Female narwhals have been observed to go through menopause as well. As with other species, post-reproductive females may contribute to the group's overall fitness by assisting with the care of younger members.
Beluga Whales: There is some evidence suggesting that beluga whales also experience a form of menopause. Older females may stop reproducing and play roles in supporting their social groups.
Meet one of the planet’s smallest turtles: the bog turtle (Glyptemys muhlenbergii)! This petite reptile grows up to 4.5 in (11.4 cm) long. It’s easily identifiable by the orange patches on either side of its head.
The bog turtle has an impressive lifespan, with the oldest documented individual reaching an age of 61! Unfortunately, this species is critically endangered due in part to poaching and habitat loss as a result of human expansion.
Photo: U.S. Fish and Wildlife Service Headquarters, CC BY 2.0, flickr (juvenile pictured)