In-stream behaviour of threatened fishes and their food organisms based on remote video monitoring
Ebner, Brendan, Clear, Rhian, Godschalx, Simon, and Beitzel, Matthew (2009) In-stream behaviour of threatened fishes and their food organisms based on remote video monitoring. Aquatic Ecology, 43 (2). pp. 569-576.
PDF (Published Version)
- Published Version
Restricted to Repository staff only |
Abstract
Can remote underwater video be used to investigate the in-stream behaviour of small fishes and decapods? Diel activity of two threatened freshwater fishes (Macquaria australasica and Gadopsis bispinosus), a palaemonid prawn and an atyid shrimp, was established from remote underwater video in a pool of an upland stream in the current study. Decapods and large fishes (> 5 cm TL) were nocturnal, whereas, small fishes (< 5 cm TL) were diurnal. The suitability of using underwater video to quantify short-term (seconds) behavioural interaction among individuals was also demonstrated, with early-juvenile-phase Gadopsis bispinosus exhibiting interference competition on 35% of occasions when two or more individuals were observed. This study demonstrates that remote underwater video is useful for observing the in-stream behaviour of threatened freshwater fauna where other techniques are not viable, and presents sub-sampling of video as a means of reducing video processing time in assessing fish diel activity patterns.
Item ID: | 35640 |
---|---|
Item Type: | Article (Research - C1) |
ISSN: | 1573-5125 |
Keywords: | Gadopsidae macrobrachium, observer effect, Paratya, Percichthyidae |
Funders: | Environment ACT, Transgrid |
Date Deposited: | 01 Oct 2014 15:55 |
FoR Codes: | 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060204 Freshwater Ecology @ 100% |
SEO Codes: | 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100% |
Downloads: |
Total: 3 |
More Statistics |