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Spawning related seasonal variation in fyke net catches of golden galaxias (Galaxias auratus): Implications for monitoring lacustrine galaxiid populations

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Hardie, SA and Barmuta, LA and White, RWG (2005) Spawning related seasonal variation in fyke net catches of golden galaxias (Galaxias auratus): Implications for monitoring lacustrine galaxiid populations. Fisheries Management and Ecology, 12 (6). pp. 407-409.

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Abstract

Fishes belonging to the family Galaxiidae are
relatively small (usually <300 mm long), freshwaterdwelling
teleosts that are found on several land
masses in the southern hemisphere (McDowall &
Fulton 1996). Many galaxiid species have nondiadromous
life histories and the distribution of some
of these consists of discrete lacustrine populations
(McDowall 2000; Allen, Midgley & Allen 2002). As a
result of restricted or fragmented distributions,
along with other impacts (e.g. introduced fish species),
many lacustrine galaxiid species are considered to
be threatened; hence monitoring populations for
conservation purposes is a common management
practice.

Fyke nets are known to be effective for capturing
small-sized benthic or littoral fish in lakes (Fago 1998;
Krueger & Hubert 1998), including galaxiids (Rowe &
Chisnall 1997; Rowe, Konui & Christie 2002). Fyke
net catches of Atlantic salmon, Salmo salar L., in lakes
vary seasonally, suggesting relative abundance indices
based on catch data often require correction for
differences in catchability (Ryan 1984). Seasonal
fluctuations in fyke net catches of European perch,
Perca fluviatilis L., due to spawning-related habitat
shifts were also reported by Kubeka (1992). Other
studies showed that cover-orientated fish species tend
to have increased catchability by fyke nets because fyke nets provide cover (Krueger & Hubert 1998;
Rogers, Hansen & Beard 2003).

Item Type: Article
Journal or Publication Title: Fisheries Management and Ecology
Page Range: pp. 407-409
Identification Number - DOI: 10.1111/j.1365-2400.2005.00454.x
Additional Information:

The definitive version is available at www.blackwell-synergy.com

Date Deposited: 11 Jan 2008 01:03
Last Modified: 18 Nov 2014 03:27
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