New Zealand Journal of Marine and Freshwater Research abstracts

---

⁺Author for correspondence.
M00014
Received 5 April 2000; accepted 10 July 2000

Short communication

Diel patterns of mysid drift (Crustacea: Mysidacea) in the Taieri River estuary, New Zealand

DARIN L. SUTHERLAND^*
GERARD P. CLOSS⁺

Department of Zoology
University of Otago
P. O. Box 56
Dunedin, New Zealand
email: gerry.closs@stonebow.otago.ac.nz

^*Present Address: Centre for Biodiversity and  Ecology Research, Department of Biological  Sciences, University of Waikato, P. O. Box 3105,  Hamilton, New Zealand.

Abstract  Drifting mysids were sampled to determine diel activity, and whether mysid numbers vary with respect to inflowing and outflowing tides. Samples of drifting mysids were collected at the mouth of the Taieri River, New Zealand, over one 24-h cycle using five replicate conical drift nets in January 1999. One-night and 1-day ebb and flood tide were each sampled. Four species of mysid Tenagomysis macropsis, T. novae-zealandiae, T. robusta, and an apparently undescribed species of Gastrosaccus sp., were collected over the sampling period. One species, T. robusta, has not previously been collected from estuarine or riverine systems. The undescribed Gastrosaccus sp. was the most abundant of the four species. All four species were more abundant at night, with T. robusta and Gastrosaccus sp. being considerably more abundant in the drift on outflowing tides. In contrast, roughly equal numbers of T. macropsis and T. novae-zealandiae were observed drifting in and out of the estuary at night.

Keywords  estuarine mysids; Tenagomysis macropsis; T. novae-zealandiae; T. robusta; Gastrosaccus sp.; diel patterns; drift

New Zealand Journal of Marine and Freshwater Research, 2001, Vol. 35: 197-200

0028-8330/01/3501-0197 $7.00 (c) The Royal Society of New Zealand 2001

PDF file of entire paper: medium quality (316K); (scanned from paper original: notes about this process)

---

This year's abstracts | Journal home page | All abstracts | Publishing home page