Phylum Nemertea (Rhynchocoela)
Phylum Nemertea (Rhynchocoela)
Phylum Nemertea (Rhynchocoela)
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Reproduction<br />
Most nemerteans are dioecious. Protandry and simultaneous hermaphroditism is known<br />
System not as complex as flatworms. Numerous paired gonads (mesenchymal tissue)<br />
located in pouches in the body wall between successive intestinal diverticuli.<br />
During reproduction, a temporary gonoduct and gonopore develop for each gonad.<br />
Gametes are shed to the sea through gonopores and body wall ruptures. Chemotaxis<br />
plays a role in locating mates<br />
External fertilization. Synchronous spawning with neighboring nemerteans? Several<br />
nemerteans may form a mucous covered mass during spawning<br />
Asexual reproduction by regeneration. Not all species can regenerate in the same<br />
extreme fashion as Lineus
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