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Overview

Comprehensive Description

Description

"Sagitta serratodentata Krohn, 1853
(Fig. 20)

 

Sagitta serratondentata atlantica Tokioka, 1959

 

Body needle-like, firm and opaque, with small head. Fins separated and rounded with a small rayless zone. Anterior fins beginning at the posterior end of the ventral ganglion. Slight trace of collarette. Alimentary diverticula absent. Small eyes with a T-shaped pigment spot. Hooks serrated. Ovaries reaching to the anterior end of the anterior fins, large ova. Seminal vesicles conspicuous with a trunk and a large knob with two papillae, situated between the posterior and tail fins, nearly touching both when fully mature. Maximum body length 13 mm, relative tail length 22-30%, hooks 5-9, anterior teeth 6-10, posterior teeth 12-20.

 

World distribution: S. serratondentata is an epipelagic oceanic species common in temperate and warm Atlantic waters although it has also been reported occasionally from other seas.

 

British records: In the north east Atlantic, usually beow latitude 50°N (see under Sagitta tasmanica, p. 54)."

 

(Pierrot-Bults & Chidgey, 1988: 50)

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© National Museum of Natural History, Smithsonian Institution

Source: Antarctic Invertebrates Website (NMNH)

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Distribution

cosmopolitan
  • North-West Atlantic Ocean species (NWARMS)
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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in all oceans
  • UNESCO-IOC Register of Marine Organisms
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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Ecology

Habitat

epipelagic
  • UNESCO-IOC Register of Marine Organisms
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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Known from seamounts and knolls
  • Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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pelagic
  • North-West Atlantic Ocean species (NWARMS)
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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Depth range based on 177 specimens in 2 taxa.
Water temperature and chemistry ranges based on 158 samples.

Environmental ranges
  Depth range (m): 5 - 5357.5
  Temperature range (°C): 0.511 - 27.010
  Nitrate (umol/L): 0.166 - 36.917
  Salinity (PPS): 34.125 - 38.398
  Oxygen (ml/l): 1.958 - 5.831
  Phosphate (umol/l): 0.090 - 2.541
  Silicate (umol/l): 0.833 - 127.739

Graphical representation

Depth range (m): 5 - 5357.5

Temperature range (°C): 0.511 - 27.010

Nitrate (umol/L): 0.166 - 36.917

Salinity (PPS): 34.125 - 38.398

Oxygen (ml/l): 1.958 - 5.831

Phosphate (umol/l): 0.090 - 2.541

Silicate (umol/l): 0.833 - 127.739
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Life History and Behavior

Behavior

Diet

microscopic diatoms, protozoans and small larvae of other animals, as well as copepod crustaceans and even larval fish
  • North-West Atlantic Ocean species (NWARMS)
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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