Technical terms that
appear in articles in this issue lexicon |
ambulacrum: any of five radial bands on the
oral surface (underside) of an echinoderm,
such as a starfish or sea urchin, on which the
tube feet are situated.
catch collagen: a compound in the skin of
echinoderms that allows them to change
their skin from a liquid to a solid at will.
chloroplasts: organelles found in plant cells
and other eukaryotic organisms that conduct
gastrodermis: the epithelial lining of the
gastrovascular (digestive) cavity of cnidarians
and ctenophores (comb jellies).
madreporite: a circular ossicle on the arbo-
ral surface of an echinoderm that serves as
the inlet to the water vascular system.
mesoglea: a layer of jelly-like material
between the external and internal cellular
layers of the body of a sponge or cnidarian;
consists largely of collagen-like fibers and
ossicles: calcium carbonate structures em-
bedded beneath the epidermis of echino-
derms and used for skeletal support.
pedicellariae: pincer-like structures used
to kill small organisms that settle on an
echinoderm’s body surfaces; they keep the
epidermis free of parasites and algae.
pinnule: a side branch structure on the
tentacle of a soft coral that gives it a feathery
phytoplankton: microscopic green plant
component of the plankton; responsible for
most photosynthetic activity in the ocean.
propodium: the anterior portion of the foot
of a mollusk.
radula: a scraping organ for mastication in
snails and other mollusks. In many gastro-
pods the radula consists of a variable number
of chitinous teeth located in the anterior por-
tion of the pharynx. In the cone shell family it
has been reduced to a sharp, grooved tooth,
fit to harpoon and inject prey with venom.
Vodka method (vodka dosing): the addi-
tion of vodka to an aquarium to decrease
nitrate and phosphate molecules; may also
increase coral coloration and clarify aquarium
Zoanthid: an anemone of the family Zoanthi-
dae, usually found in intertidal areas and coral
reefs. In some species the polyps separate
from each other almost completely after bud-
ding, while in other species, the polyps are all
interconnected by a common mat of tissue.
REEF LIFE page 96
Unidentified spider crab, Family Majidae, on a
large gorgonian, North Sulawesi, Indonesia.
These small crabs, self-decorated and festooned
with stinging hydroids, are almost invisible on
gorgonians when their polyps are extended. This
one was scuttling across the coral’s branches when
I noticed its movement during a night dive.
—Image by Denise Nielsen Tackett
PhytoPlan® Advanced Phytoplankton Diet is a blend of several varieties of
phytoplankton in a dry powder form. The spray dried intact cells aren’t live, but
when re-hydrated they are a microencapsulated source of color-enhancing
beta carotene and astaxanthin pigments, vitamins, amino acids and essential
fatty acids. Ideal food for filter feeding invertebrates, such as soft corals,
anemones, feather duster worms, clams, sponges, and sea cucumbers.
PhytoPlan is also a great supplement to enrich the nutritional value of dry fish
foods. Soak dried fish foods briefly in a mix of 1/4 teaspoon of PhytoPlan with
two tablespoons of water. PhytoPlan is also a great food for raising live brine
shrimp, or it can be used to enhance their nutritional value immediately prior
to feeding them to fishes.
• Source of vitamins, pigments, amino acids, & essential fatty acids.
• For filter-feeding invertebrates.
• For enhancing the nutritional value of fish foods.
• For feeding live brine shrimp and enhancing their nutritional value.
PhytoPlan and ZoPlan: Planktonic Foods for Filter Feeding Marine Invertebrates.
ZoPlan® Advanced Zooplankton Diet is a blend of dried crustaceans and
other sea creatures in a size range that makes it an ideal food for marine
invertebrates such as soft and stony corals, gorgonians, seafans,
anemones, cerianthids, zoanthids, hydrozoans, clams, and other filter
feeders. Also a food for fishes that feed on zooplankton.
• Source of vitamins, pigments, amino acids, and essential fatty acids.
• Particles sizes from less than 10 microns to more than 250 microns.
• For filter-feeding invertebrates.
• For zooplankton-eating fishes.
• Low moisture means concentrated nutritional value.
• Long Shelf life.
Zooxanthellate corals that feed on zooplankton can calcify more than 50%
faster. Ahermatypic corals and other filter feeders depend on zooplankton to
meet their metabolic needs, but also obtain some nutrition from dissolved
or particulate organic matter (MarineSnow®), and phytoplankton.
Feed them our plankton and watch them grow!
Two Little Fishies