What animals have a lophophore?
What animals have a lophophore?
invertebrate animals that possess a lophophore, a fan of ciliated tentacles around the mouth. Movements of the cilia create currents of water that carry food particles toward the mouth. The lophophorates include the moss animals (phylum Bryozoa), lamp shells (phylum Brachiopoda), and phoronid worms (phylum Phoronida).
Where are Phoronida found?
Phoronida occur in all oceans and seas except the polar seas. They are known from intertidal mudflats to depths of about 400 m, but mainly between 0 and 70 m. Most species cover wide geographical ranges and most are global also.
Do brachiopods have a lophophore?
Brachiopods have a characteristic morphology with peduncle, lophophore, and two valves. Most are sessile epifaunal suspension-feeders.
Are Phoronids vertebrates or invertebrates?
The Phoronida, which is one of the smallest phyla of invertebrates, includes only 13 valid species, although ~40 larval forms of phoronids were recently described.
Do molluscs have a lophophore?
Lophotrochozoa: A large group that includes annelid worms, mollusks, and bryozoa, characterized in some cases by a ciliated feeding organ called a lophophore and in other cases by a ciliated larval stage called a trochophore.
Is a snail a Lophotrochozoan?
The name Lophotrochozoa comes from the names of the larval type of the two major animal groups included: the Lophophorata and the Trochozoa. The Trochozoa contain many worm-like forms, including the segmented worms (Phylum Annelida) but it also includes the Mollusca (snails, squid, octopods, clams, etc).
What is the function of the lophophore?
The lophophore is a specialized part of the mesosome, which bears tentacles that are covered with numerous cilia. The lophophore performs several main functions including the collecting of food particles, the brooding of embryos, and respiration.
What do Horseshoe worms eat?
plankton
The eggs of most species form free-swimming actinotroch larvae, which feed on plankton.
Do platyhelminthes have a lophophore?
Phylum Platyhelminthes. The flatworms possess neither a lophophore nor trochophore larvae, although the larvae of one group of flatworms, the Polycladida (named after its many-branched digestive tract), are considered to be homologous to trochophore larvae.
What qualifies an animal as a Lophophorate?
lophophorate, any of three phyla of aquatic invertebrate animals that possess a lophophore, a fan of ciliated tentacles around the mouth. Movements of the cilia create currents of water that carry food particles toward the mouth.
Do squids have lophophore?
Mollusks are a large and diverse group of animals; familiar mollusks include snails, clams, squids, and octopuses. The Annelida are worms with thorough segmentation of the body. The phoronids, bryozoans, and brachiopods are all filter-feeders that share a ciliated feeding organ called a lophophore.
Where does the phoronid live in the ocean?
They live in most of the oceans and seas, including the Arctic Ocean but excluding the Antarctic Ocean, and between the intertidal zone and about 400 meters down. Most adult phoronids are 2 cm long and about 1.5 mm wide, although the largest are 50 cm long. The name of the group comes from its type genus: Phoronis.
How long do the larvae of a phoronid live?
One species forms a “slug-like” larva, and the larvae of a few species are not known. Phoronids live for about one year. Some species live separately, in vertical tubes embedded in soft sediment, while others form tangled masses buried in or encrusting rocks and shells.
What are the physical characteristics of a phoronid?
PHYSICAL CHARACTERISTICS. Phoronids (for-OH-nihds) are long, thin, wormlike animals that live inside slender tubes that they make with their own bodies. When relaxed, adults normally measure up to 18 inches (450 millimeters), but some phoronids can extend their bodies nearly five times that length.
What are the main functions of the lophophore?
The main functions of the lophophore are feeding, respiration, and protection. The site and shape of the lophophore are proportional to body size, ranging from oval to horseshoe to helicoidal in relation to an increase in the number of tentacles. Phoronids have a U-shaped digestive tract.
