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You are here:   animal list > Sagitta tasmanica and other chaetognaths

Chaetognatha

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                   CHAETOGNATHA

                          Arrow Worms

Michael Le Roux (2011)

Fact Sheet

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Overview

General Information


Physical Description

Body


Identification Resources


Ecology

Distribution


Life History & Behaviour

Behaviour


Reproduction


Evolution & Systematics

Fossil History


Systematics or Phylogenetics


Morphology and Physiology

External Morphology


Internal Anatomy


Molecular Biology & Genetics

Nucleotide Sequences


Molecular Biology


Conservation

Trends


Threats


Wikipedia


References & More Information

Content Partners


Bibliographies


Names & Taxonomy

Species List


Common Names


Page Statistics

Content Summary

Threats

It has been observed that the distribution of some chaetognath species is closely linked with environmental variables (MSIP), thus making them excellent indicators of the health of their environment. Studying chaetognaths should assist in identifying if these variables change, if they do change then chaetognaths may be at an elevated risk of extinction. However, due to their small size, chaetognaths may not be the best option as an indicator species.

 

The effects of climate change may also affect chaetognaths; in particular, it may be assumed that increasing sea surface temperature (SST) would more likely to have a greater affect on them than increasing sea level. Sea surface temperature may affect chaetognaths that have their distribution restricted to colder waters, and would have less alternative options for suitable habitats. Additionally, increasing SST may affect the vertical distribution of temperatures that fall within an individual's preferred range.

 

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Chaetognatha Head
Chaetognatha Head

Classification

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Kingdom
Animalia
Phylum
Chaetognatha
Class
Sagittoidea
Order
Aphragmophora
Family
Sagittidae
Genus
Serratosagitta

Synonyms

Sagitta serratodentata tasmanica ()
Sagitta tasmanica (Thompson, 1947)
Serratosagitta selkirki ((Faggetti, 1958))

Common Names

arrow worm