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You are here:   animal list > Reteterebella queenslandia

 

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Reteterebella queenslandia Hartman 1863

Spaghetti worm




Lachlan Gleeson (2011)

 

 

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Overview

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Comprehensive Description


Physical Description

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Ecology

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Crypsis


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Evolution & Systematics

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Morphology and Physiology

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Internal Anatomy


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Content Summary

Internal Anatomy

Reteterebella queenslandia has a simple internal anatomy. It has a complex and well developed hemal system with a muscular heart and extensive blood supply to the branchial appendages. There is very little specalisation of the digestive system. The mouth and pharynx are highly muscularised and used for sorting sand particles into different sizes (Mathers and Bennett, 1993). The mid and hindgut demonstrated very little regional specalisation.

The tentacles of R. queenslandia demonstrated unusual internal structure. The tentacles are ceolomic based with extensive musculature and several unidentified clusters of cells, possible nerve bundles running the length of the tentacle. The transport grove of the tentacle was highly ciliated and heavily populated with secretor glands along the outer edge. The TS dissection of the anterior section of R. queenslandia clearly shows the extensive blood supply to the branchial structures. It also demonstrates the main internal ventral musculature used for locomotion. 
 

Digestive system of R. queenslandia with circular muscles towards the anterior in green


Digestive system pinned out and pharynx exposed. The hemal system and extensive internal vascularisation is also visible.



Close up of dissectecd mouth and pharynx of R. queenslandia
 

 
Section of anterior of R. queenslandia  showing the central ventral muscle chord. Cross section of a buccal tentacle with extensive muscularisation of the ceolom.
 

 

Anterior section showing the pharynx of R. queenslandia
Close up of the pharynx showing cilliation of the pharynx




Classification

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Kingdom
Animalia
Phylum
Annelida
Class
Polychaeta
Order
Terebellida
Family
Terebellidae
Genus
Reteterebella

Synonyms

Reterebella queenslandia ([auctt.])

Common Names

カワリフサゴカイ