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
5 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
Category Archives: Botany
Notes and photos provided to the Botany Group by Alison M. Click a photo to enlarge it. Part 1: Fungi with veins and folds As you will have noticed with the cooler wetter weather, fungi are starting to appear. Jocie … Continue reading
From an email by Jocie to the Botany Group on September 25. It’s that time of year again, when the fruiting fungi start to magically appear after the rain. Here’s a few photos of the Pacific golden chanterelle (Cantharellus formosus). They … Continue reading
From an email by Jocie to the Botany Group on September 19. Slime mould continues to fascinate…the video clips sent recently by Joy inspired me to put together a few photos of local slimes. [Click a photo to enlarge it.] … Continue reading