Each discovers a vitality beyond the usual limits of life: the first, in the delicate rhythm of autumnal oak leaves, and the second in the marine foliage of a 'seaweed' actually composed of small organisms, or zooids
. Ruskin's Snake's-Head Fritillary (Fig.
Bryozoan colonies are made from very small repeating box-like units called zooids
. They can be as big as 1mm across, but usually they are smaller.
A single Bryzoan organism is known as a zooid
. What is amazing about these zooids
is that they can survive as part of a clump or drift away separately to start their asexual cloning to form their own gooey lump.
BotryUoides leachii is a sessile suspension-feeding ascidian that lives in clonal colonies of adults, termed zooids
, that organize in a series of ladder-like parallel rows, known as systems (Fig.
Bryozoans are small benthic aquatic invertebrates growing as colonies of connected zooids
on submerged substrates (Massard and Geimer, 2008; El-Sorogy, 2015).
It means that during their evolution, the siculozooid became larger, while zooids
were small in size and reduced in numbers (Kozlowska-Dawidziuk 2004, fig.
Approximately 40 zooids
of each fragment, separated under stereomicroscope and washed in 50mL MilliQ water, were used for DNA extraction.
To determine the types and to count the zooids
in each sample, we used counting chambers, a light microscope, and a stereoscope.
A few forms (e.g., Charniodiscus) contain tiny tubes which may have housed zooids
, implying these were sea pens (Phylum Cnidaria).
celleporoides in the morphology of the avicularia (defensive zooids
), and a new genus resembling Dysnoetopora in constructing branched, 'celleporiform' colonies but having feeding zooids
with an orificial sinus.
, as the component clones are called, specialize and cooperate to swim and hunt together as a single creature.
Stomach contents of 88 zooids
of Ecteinascidia turbinata Herdman 1880 and the qualitative and quantitative composition of phytoplankton in the water column were studied in Santa Fe (North Coast of Havana) and Punta del Este (SW of Cuba).