Blog Posts by Category
2 days ago
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? ... See MoreSee Less
6 days ago
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.
- 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 ... See MoreSee Less
Author Archives: web_admin
From an email by Jocie to the Botany Group on October 24. There are some spectacular displays of “big laughing gym”, also known as “western jumbo gym” (Gymnopilus ventricosus) at Seal Bay Park. You can find it about 3/4 of … Continue reading
From an email by Jocie to the Botany Group on October 23. Lobsters & corals bring to mind sea creatures, but these are actually just strange, exotic-looking fungi! My Mom, Betty, and I were having a great time looking at … Continue reading
Note by Alison M. to the Botany Group, distributed by Jocie on October 20. Notes on shades of green, blue and purple in gilled mushrooms Still in the category of gilled shrooms, shades of greens and blues are not commonly found … Continue reading
From an email by Jocie to the Botany Group on October 17. There are many coral fungi fruiting just now…this is a strangely beautiful group of fungi, often arising mysteriously from the forest duff. Amazing! Corals, often in the genera Ramaria or Clavulina, are characterized … Continue reading