https://padlet.com/punzelec/w0q889y90x4j Theme 5: Reproduction en-us 2019-03-24 13:08:22 UTC 2026-01-30 14:05:35 UTC hello@padlet.com punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/344555163 2019-03-24 13:15:02 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/344555163 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/344555246 2019-03-24 13:16:13 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/344555246 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/344556162 Sexual reproduction- each creature either male or female
     Female releases eggs (up to a million) 
     Male fertilizes eggs in water
     Larvae develop and settle on sea floor
Asexual reproduction
     Starfish limb regeneration
     Some juveniles can split into two organisms
Parthenogenesis
     Fertilization of eggs without sperm 

]]> 2019-03-24 13:26:51 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/344556162 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/344589792 During trying conditions; usually alternate with sexual reproduction
Not all are capable of asexual
Arms go in two different directions; animal splits down the middle
Very few can regenerate from a single arm (fragmentation)

]]> 2019-03-24 18:20:09 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/344589792 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/344590167 2019-03-24 18:23:14 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/344590167 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/344590697 2019-03-24 18:26:56 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/344590697 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/344591158 Population of Sea stars in the Northwestern Mediterranean that are exclusively monoclonal
Population has been maintained for a number of years (study was done over two) entirely asexually
A few specimen have reproductive organs (all male)- possibility for future asexual reproduction]]> 2019-03-24 18:29:56 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/344591158 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/345063907 Ocean acidification (more CO2) affects echinoderm embryos and larvae
Development slower, produces abnormalities
100% mortality rate among experimental group, 70% survival rate among control]]> 2019-03-26 01:10:07 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/345063907 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/345064789 2019-03-26 01:15:42 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/345064789 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/345066575 2019-03-26 01:25:30 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/345066575 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/345069818 2019-03-26 01:41:25 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/345069818 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/345070365 Eaves, Alexandra A., and A. Richard Palmer. "Reproduction: Widespread cloning in echinoderm larvae." Nature, vol. 425, no. 6954, 2003, p. 146. Research in Context, http://link.galegroup.com/apps/doc/A187749387/MSIC?u=mnamlkcl&sid=MSIC&xid=1e620257. Accessed 24 Mar. 2019.

Dolmatov IY., Afanasyev SV, Boyko AV (2018) Molecular mechanisms of fission in echinoderms: Transcriptome analysis. PLoS ONE 13(4): e0195836. https://doi.org/10.1371/journal. pone.0195836

Garcia-Cisneros A., Perez-Portela R., Wangensteen O.S., Campos-Canet M., Palacin C "Hope springs eternal in the starfish gonad: preserved potential for sexual reproduction in a single-clone population of a fissiparous starfish."(2017)  Hydrobiologia,  787  (1) , pp. 291-305.

Pauline M. Ross 1,*, Laura Parker 1, Wayne A. O’Connor 2 and Elizabeth A. Bailey " The Impact of Ocean Acidification on Reproduction, Early Development and Settlement of Marine Organisms"  Water, 2011.

 Sea Urchin Fertilization Lab Hawai‘i Institute of Marine Biology Education Program Clyde Tamaru, Ph.D. Malia Rivera, Ph.D. Roxanne Haverkort Kelvin Gorospe

"Smallest Seastar Discovered." Australian Science Volume for March 2008. p. 15. Accessed 24 Mar. 2019.]]> 2019-03-26 01:44:06 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/345070365 punzelec https://padlet.com/punzelec/w0q889y90x4j/wish/345073565 Echinoderms 3 modes of reproduction
How sexual reproduction works (eggs and sperm released into water)
How asexual reproduction works (split apart clones)]]> 2019-03-26 02:01:35 UTC https://padlet.com/punzelec/w0q889y90x4j/wish/345073565