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Dev Biol 1990 Mar 01;1381:188-93. doi: 10.1016/0012-1606(90)90188-o.
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The "lecithotrophic" sea urchin Heliocidaris erythrogramma lacks typical yolk platelets and yolk glycoproteins.

Scott LB , Lennarz WJ , Raff RA , Wray GA .

The sea urchin Heliocidaris tuberculata undergoes typical development, forming an echinoid pluteus larva, whereas H. erythrogramma undergoes direct development via a highly modified, nonfeeding larva. Using a polyclonal antibody prepared against yolk glycoproteins from the typical developer Stronglyocentrotus purpuratus, we found that H. tuberculata contains cross-reactive proteins in abundance, but H. erythrogramma does not. In addition, we used immunoelectron microscopy to demonstrate that unfertilized eggs of H. tuberculata contain yolk platelets, but those of H. erythrogramma do not.

PubMed ID: 2307284
Article link: Dev Biol
Grant support: [+]

Species referenced: Heliocidaris erythrogramma
Genes referenced: LOC100887844
Antibodies: myp Ab1