Is veliger a Holoplankton?

Is veliger a Holoplankton?

Veliger of bivalves Shipworms, however, hatch directly as veligers, with the trochophore being an embryonic stage within the egg capsule. Many freshwater species go further, with the veliger also remaining within the egg capsule, and only hatching after metamorphosing into the adult form.

Which mollusks have a Meroplankton larval stage?

Meroplankton includes sea urchins, starfish, sea squirts, most of the sea snails and slugs, crabs, lobsters, octopus, marine worms and most reef fishes.

What adult form develops from a veliger?

The velum forms from the ciliary ring (prototroch), a characteristic of the trochophore stage. The velum is used for swimming, feeding, and gas exchange, and it is resorbed or lost as the mollusk metamorphoses into its adult stage. In addition, the mollusk begins to develop a foot and shell during the veliger stage.

How do you pronounce veliger?

  1. Phonetic spelling of veliger. veliger. vee-li-jer. veli-ger.
  2. Meanings for veliger.
  3. Translations of veliger. Chinese : 面盘 Arabic : فيلجر والتى Japanese : 卵 Russian : велигер

What are the four parts of the mollusk body?

The four important body parts in the mollusk could be listed as: Shell, Mantle, Visceral Mass and Foot.

What is a starfish larva called?

From Wikipedia, the free encyclopedia. A bipinnaria is the first stage in the larval development of most starfish, and is usually followed by a brachiolaria stage. Movement and feeding is accomplished by the bands of cilia.

Is a jellyfish a plankton?

Jellyfish are plankton—they’re drifters. Usually we think of plankton as being tiny, and many of them are, but plankton just means living things in the water that can’t fight a current, which includes floating jellies.

What is a Macroplankton?

: macroscopic plankton comprising the larger planktonic organisms (as jellyfish, crustaceans, sargassums)

Is mollusca a Trochophore?

Trochophore, also called trochosphere, small, translucent, free-swimming larva characteristic of marine annelids and most groups of mollusks. In some mollusks (such as gastropods and bivalves), the trochophore develops into a second stage, the veliger (q.v.), before metamorphosing to adult form.

Share this post