Lyngbya majuscula blooms and the diet of small subtropical benthivorous fishes

Gilby, BL, Burfeind, DD and Tibbetts, IR (2011) Lyngbya majuscula blooms and the diet of small subtropical benthivorous fishes. Marine Biology, 158 2: 245-255. doi:10.1007/s00227-010-1555-9


Author Gilby, BL
Burfeind, DD
Tibbetts, IR
Title Lyngbya majuscula blooms and the diet of small subtropical benthivorous fishes
Journal name Marine Biology   Check publisher's open access policy
ISSN 0025-3162
1432-1793
Publication date 2011-02-01
Year available 2010
Sub-type Article (original research)
DOI 10.1007/s00227-010-1555-9
Volume 158
Issue 2
Start page 245
End page 255
Total pages 11
Place of publication Heidelberg, Germany
Publisher Springer
Language eng
Formatted abstract
Increasing concerns about the ecological impacts of ongoing and possibly worsening blooms of the toxic, carcinogenic cyanobacteria Lyngbya majuscula in Moreton Bay, Australia, led us to assess differences in meiofaunal prey assemblages between bloom and non-bloom substrates and the potential dietary impacts of dense L. majuscula blooms on the omnivorous benthivore, the Eastern Long-finned Goby, Favonigobius lentiginosus and the obligate meiobenthivorous juveniles of Trumpeter Whiting, Sillago maculata. Marked differences in invertebrate communities were found between sandy and L. majuscula bloom foraging substrates, with copepods significantly more abundant (18.49% vs. 70.44% numerical abundance) and nematodes significantly less abundant (55.91% vs. 1.21% numerical abundance) within bloom material. Gut analyses showed that bentho-planktivorous fishes exposed to L. majuscula in captivity had consumed a significantly greater quantity of prey by both total number (P < 0.0019) and volume (P < 0.0006) than fish exposed to sand treatments. Thus, it is likely for such fishes that L. majuscula blooms increase rates of prey encounter and consumption, with consequent changes in trophic relationships through shifts in predator–prey interactions between small benthivorous fishes and their meiofaunal prey.
© Springer
Keyword Harmful algal blooms
Moreton Bay
Stylocheilus-longicauda
Sea hare
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online November 27, 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Biological Sciences Publications
 
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Created: Sun, 27 Feb 2011, 10:05:06 EST