It is well documented that organelles can be retained and used by predatory organisms, but in most cases such sequestrations are limited to plastids of algal prey. Furthermore, sequestrations of prey organelles are typically highly ephemeral as a result

It is well documented that organelles can be retained and used by predatory organisms, but in most cases such sequestrations are limited to plastids of algal prey. Furthermore, sequestrations of prey organelles are typically highly ephemeral as a result

For several decades, annually recurring blooms of the photosynthetic ciliate Myrionecta rubra have been observed in the Columbia River estuary in late summer. In an effort to understand the dynamics of these blooms, we investigated the genetic variability

Myrionecta rubra (Lohmann 1908, Jankowski 1976) is a photosynthetic ciliate with a global distribution in neritic and estuarine habitats and has long been recognized to possess organelles of cryptophycean origin. Here we show, using nucleomorph (Nm)