View Details page below in a new webpage
View Details page below as a printable PDF
Facebook www.facebook.com/cvnature/
Thumbing through Slime Mold Identification & Appreciation page and delighted to see the beauty of iridescent of Lamproderma slime molds and the colours found in a variety of slime molds. Have you found a slime mold to share on this page?
Rare bird alert— Canada’s first Red-backed Shrike was found in Powell River on Thursday:
RBA: RED-BACKED SHRIKE in Powell River - Oct 22-24th
bcbirdalert.blogspot.com
At 1:15 pm on Oct 22-2020, Iwan Van Veen found a Red-backed Shrike on Fernwood Ave in Powell River. The bird was hunting from the powerlines...Have you wondered about the life span of a sea urchin?Red Urchin in the forest. This individual may be 100 years old . . . or older. Really.
Research has also found that there is no diminished fitness with age in this species i.e. there is no senescence. The older Red Urchins are in fact the ones that produce the most eggs and sperm. They also continue to grow throughout their lives albeit at a very slow rate.
And a bad pun: I urchin you to share this #DailyDoseOfDepth with a friend. 🙂
Age determined by (1) tagging individual sea urchins and injection with tetracycline, which becomes incorporated into the sea urchin skeleton and can be used to track the growth rates and (2) measuring carbon-14, which has increased in all living organisms following the atmospheric testing of atomic weapons in the 1950s.
Strongylocentrotus franciscanus to 30 cm across. If you look closely you can see the tube feet among the spines.
Photo: ©Jackie Hildering; The Marine Detective
October 4th near Telegraph Cove.
_______________________
Research:
- Amir, Y.; Insler, M.; Giller, A.; Gutman, D.; Atzmon, G. Senescence and Longevity of Sea Urchins. Genes 2020, 11, 573. www.mdpi.com/2073-4425/11/5/573/htm
-
Ebert, Thomas. (2008). Longevity and lack of senescence in the red sea urchin Strongylocentrotus franciscanus. Experimental Gerontology. 43. 734-738. 10.1016/j.exger.2008.04.015. www.researchgate.net/publication/222349781_Longevity_and_lack_of_senescence_in_the_red_sea_urchin...
#MarineBiology #Urchin