Vertical distribution of pelagic chaetognaths and feeding of Sagitta enflata in the Central Equatorial Pacific

@article{Terazaki1996VerticalDO,
  title={Vertical distribution of pelagic chaetognaths and feeding of Sagitta enflata in the Central Equatorial Pacific},
  author={Makoto Terazaki},
  journal={Journal of Plankton Research},
  year={1996},
  volume={18},
  pages={673-682}
}
  • M. Terazaki
  • Published 1996
  • Biology
  • Journal of Plankton Research
The vertical distribution and feeding of pelagic chaetognaths at 5°S, 160°W in the Central Equatorial Pacific were investigated using a series of 0-500 m vertical hauls with a VMPS net over a 24 h period between 6 and 7 October 1990. The total number of individuals per haul was between 370 and 688. Fourteen species in four genera were found at this station. The most abundant species was Sagina enflata which comprised 32.4-61.1 % of the individuals collected from the 0-500 m layer. Mesopelagic… Expand
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  • Biology
  • Journal of the Marine Biological Association of the United Kingdom
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References

SHOWING 1-10 OF 17 REFERENCES
Life history and vertical distribution of pelagic chaetognaths at Ocean station P in the subarctic Pacific
TLDR
Seven species of two genera of pelagic chaetognaths were collected at Ocean Station P from February 1980 to January 1981 and both E. hamata and S. elegans had three spawning periods during the year, separated by distinct gaps in both presence of mature individuals and appearance of new juveniles. Expand
The Distribution of the Planktonic Chaetognatha in the Pacific and their Relationship to the Water Masses1
TLDR
The geographic extents of 27 species of Chaetognatha in the Pacific have been inferred from analyses of 2,900 plankton samples taken at more than 900 stations, with sharpest chaetognath boundary yet found in the Eastern Pacific at 18° to 20° N. Lat. Expand
Horizontal and vertical distribution of chaetognaths in a Kuroshio Warm Core Ring
Abstract The horizontal and vertical distribution and diel migration of chaetognaths were investigated in the Kuroshio warm-core ring (KWCR) and adjacent waters during two cruises in August andExpand
Feeding rate of the chaetognath Sagitta enflata in nature
TLDR
The relationships of the NP ratios of planktonic organisms, their food, and their excretion products may be a consistent feature of marine ecosystems, and may help to explain some aspects of nutrient cycling. Expand
Daily ration and specific daily ration of the chaetognath Sagitta enflata
Digestion times, obtained directly from laboratory feeding, were used in conjunction with a day/night series of field samples to estimate the daily ration and specific daily ration of Sagitta enflataExpand
The Chaetognatha Community of the Agulhas Current: Its Structure and Related Properties
TLDR
An objective technique was used to identify and study related groups of chaetognath species from the Southwest Indian Ocean off the coast of the Republic of South Africa, finding the most representative groups were from the data of the N70V—nets which formed 3 groups. Expand
Vertical Migration and Feeding in Sagitta Elegans Verrill
TLDR
It is concluded that Sagitta left the surface waters during the day primarily in order to avoid visually directed predation and a model for depth control in diel migration is proposed. Expand
STUDIES ON THE CHEMICAL COMPOSITION OF THE MAJOR ZOOPLANKTON GROUPS IN THE SARGASSO SEA OFF BERMUDA1
A one year study was made of the carbon, nitrogen, phosphorus, and carbohydrate content of the major zooplankton groups from the surface to 500 m in the Sargasso Sea off Bermuda. Carbon contentExpand
Feeding by Chaetognatha : the relation of prey size to predator size in several species
TLDR
Because chaetognaths are probably one of the main sources of predation pressure on the copepod community, both the general form of their prey-size selection and differences in this function between species should have considerable influence on the size structures of lower trophic levels. Expand
Feeding of Zooplankton, with Special Reference to Some Experiments with Sagitta
THE chaetognaths have long been known as active carnivores1, though knowledge of their feeding behaviour is limited to qualitative observations on the nature of their food, and mode of operation ofExpand
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