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Structure and function of Halice hesmonectes (Amphipoda: Paraliscidae) swarms from hydrothermal vents in the eastern Pacific

Structure and function of Halice hesmonectes (Amphipoda: Paraliscidae) swarms from hydrothermal vents in the eastern Pacific
Structure and function of Halice hesmonectes (Amphipoda: Paraliscidae) swarms from hydrothermal vents in the eastern Pacific
Swarms of the pardaliscid amphipod Halice hesmonectes were sampled at low-temperature hydrothermal vents in the Venture Hydrothermal Fields of the East Pacific Rise. In excess of 3000 individuals were collected from a range of sites/habitats, and at two points in time (December 1991 and March 1994). The structure of swarms was described in terms of growth stages, the development of primary and secondary sex characteristics and the accumulation of nutritional reserves. The results demonstrated that swarms contained a wide range of growth stages, but that small juveniles and mature males and females were absent. Swarm structure was interpreted as an equilibrium dependent on the relative proportion of time spent by each growth stage in the swarm habitat. This equilibrium swarm structure was very similar at different sites and times. Swarms dominated by small juveniles occurred at the northern sites in December 1991 following a period of eruption and new venting in April 1991. Equilibrium swarm structure had become re-established at these sites by March 1994. The function of swarming was considered. The results indicated that swarming was not associated with reproductive activity. The available evidence, though not conclusive, suggested that swarms were associated with feeding.
AMPHIPODS, EAST PACIFIC RISE, HYDROTHERMAL COMMUNITIES, SWARMS
0025-3162
901-911
Sheader, M.
fc6fc729-69bd-460d-846f-e2ba1c8e1b6b
Van Dover, C.L.
be7f6833-328c-4d54-83ae-df116afcc487
Shank, T.M.
de547345-74e5-4f0b-bd48-c01296a75aab
Sheader, M.
fc6fc729-69bd-460d-846f-e2ba1c8e1b6b
Van Dover, C.L.
be7f6833-328c-4d54-83ae-df116afcc487
Shank, T.M.
de547345-74e5-4f0b-bd48-c01296a75aab

Sheader, M., Van Dover, C.L. and Shank, T.M. (2000) Structure and function of Halice hesmonectes (Amphipoda: Paraliscidae) swarms from hydrothermal vents in the eastern Pacific. Marine Biology, 136 (5), 901-911. (doi:10.1007/s002270000300).

Record type: Article

Abstract

Swarms of the pardaliscid amphipod Halice hesmonectes were sampled at low-temperature hydrothermal vents in the Venture Hydrothermal Fields of the East Pacific Rise. In excess of 3000 individuals were collected from a range of sites/habitats, and at two points in time (December 1991 and March 1994). The structure of swarms was described in terms of growth stages, the development of primary and secondary sex characteristics and the accumulation of nutritional reserves. The results demonstrated that swarms contained a wide range of growth stages, but that small juveniles and mature males and females were absent. Swarm structure was interpreted as an equilibrium dependent on the relative proportion of time spent by each growth stage in the swarm habitat. This equilibrium swarm structure was very similar at different sites and times. Swarms dominated by small juveniles occurred at the northern sites in December 1991 following a period of eruption and new venting in April 1991. Equilibrium swarm structure had become re-established at these sites by March 1994. The function of swarming was considered. The results indicated that swarming was not associated with reproductive activity. The available evidence, though not conclusive, suggested that swarms were associated with feeding.

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More information

Published date: 2000
Keywords: AMPHIPODS, EAST PACIFIC RISE, HYDROTHERMAL COMMUNITIES, SWARMS

Identifiers

Local EPrints ID: 8977
URI: https://eprints.soton.ac.uk/id/eprint/8977
ISSN: 0025-3162
PURE UUID: 04f9dc92-d56e-429c-a931-b6936bc94861

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Date deposited: 08 Sep 2004
Last modified: 17 Jul 2017 17:12

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