A first record of daytime surface swarming by Euphausia lucens in the Southern Benguela region |
| |
| Authors: | S Nicol A James G Pitcher |
| |
| Institution: | (1) Marine Biology Research Institute, Zoology Department, University of Cape Town, Rondebosch 7700, Cape Town, Republic of South Africa;(2) Sea Fisheries Research Institute, Private Bag X2, Rogge Bay, 8012 Cape Town, Republic of South Africa;(3) Present address: 101 Edgeway Road, OX3 OHF Marston, Oxford, England |
| |
| Abstract: | On 9 October, 1985 a daytime surface swarm of the euphausiid Euphausia lucens was observed and sampled in St. Helena Bay in the Southern Benguela region. The swarm was monospecific, consisted of adults in prebreeding condition and appeared to be feeding on detrital material. The swarm covered an estimated 46 ha, densities within it ranged between 4 000 and 1 500 000 individuals per cubic metre and the swarm was estimated to contain  5 000 tonnes of euphausiids. No simple explanation for the presence of the swarm was apparent. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
