prototroch

[′prōd·ə‚träk]

(invertebrate zoology)

The band of cilia characteristic of a trochophore larva.

Mentioned in ?

References in periodicals archive ?

A preoral band of cilia, the prototroch, encircles the larva and beats with an effective stroke from anterior to posterior.

Contrasting Metatrochal Behavior of Mollusc and Annelid Larvae and the Regulation of Feeding While Swimming

The transformation of embryos to trochophore larvae occurred 17.5 h after fertilization, which included the formation of a pear-shaped body, a tuft of cilia in the episphere, and the ciliary ring above the mouth (prototroch), which enabled the larvae to move (Fig.

EMBRYONIC AND LARVAL DEVELOPMENT OF THE SUBTROPICAL GEODUCK CLAM PANOPEA GLOBOSA (BIVALVIA: HIATELLIDAE)

The prototroch with a band of fine cilia encircling the head, with the exception of the dorsal part (Fig.

Morphological and Molecular Characterization of Polydora websteri (Annelida: Spionidae), with Remarks on Relationship of Adult Worms and Larvae using Mitochondrial COI Gene as a Molecular Marker

The trochophoredeveloped into diamond-shaped covered by crown of cilia called prototroch at anterior part.

Early development of tropical oyster Crassostreairedalei (Faustino 1932)

The onset of development is intracapsular, a rapid formation of the locomotory prototroch is no longer necessary, and the free-swimming phase is postponed to later developmental stages.

Cleavage patterns and mesentoblast formation in the Gastropoda: an evolutionary perspective

The velar edge had the ciliary bands typical of feeding veligers: prototroch, metatroch, and food groove (Fig.

Brood Reduction, Not Poecilogony, in a Vermetid Gastropod with Two Developmental Outcomes within Egg Capsules

The prototroch has abundant, elongated cilia and forms a crown towards the anterior end; granules of dark green vitellus can be observed at the posterior end of the larvae (Fig.

Breeding cycle and early development of the keyhole limpet Fissurella nigra Lesson, 1831

From the early trochophore stage (18 hpf), the ciliated prototroch started to be transformed into the velum (22 hpf), the main larval swimming organ (Fig.

Neuronal Development in the Larvae of the Invasive Biofouler Dreissena polymorpha (Mollusca: Bivalvia), with Special Attention to Sensory Elements and Swimming Behavior

elegans are free-swimming planktotrophic animals with a ciliated prototroch and metatroch and a collar (Fig.

Expression and localization of carbonic anhydrase genes in the serpulid polychaete Hydroides elegans

A non-feeding pilidium with apparent prototroch and telotroch.

Larval development of two N. E. Pacific Pilidiophoran Nemerteans (Heteronemertea; Lineidae)

tenuis appeared to have only simple cilia in the prototrochal ciliary band; among planktotrophic larvae of annelids, simple cilia in the prototroch were previously known only from members of Oweniidae.

Development and larval feeding in the capitellid annelid Notomastus cf. tenuis

Also during gastrulation, the blastopore and pretrochal region were ventrally displaced, situating the blastopore ventrally just below the developing prototroch (Fig.

Complete development of the northeast Pacific arminacean nudibranch Janolus fuscus

Full browser ?

CITE

Site: Follow: Share:

Open / Close