Pubblicazione scientifica

Age structure of the Australian lungfish (Neoceratodus forsteri)

FILONE TECNOLOGICO	TEMA
trasformazione e commercializzazione

RIASSUNTO

The Australian lungfish has been studied for more than a century without any knowledge of the longevity of the species. Traditional methods for ageing fish, such as analysis of otolith (ear stone) rings is complicated in that lungfish otoliths differ from teleost fish in composition. As otolith sampling is also lethal, this is not appropriate for a protected species listed under Australian legislation. Lungfish scales were removed from 500 fish from the Brisbane, Burnett and Mary rivers. A sub–sample of scales (85) were aged using bomb radiocarbon techniques and validated using scales marked previously with oxytetracycline. Lungfish ages ranged from 2.5–77 years of age. Estimated population age structures derived using an Age Length Key revealed different recruitment patterns between river systems. There were statistically significant von Bertalanffy growth model parameters estimated for each of the three rivers based on limited sample sizes. In addition, length frequency distributions between river systems were also significantly different. Further studies will be conducted to review drivers that may explain these inter-river differences.

DATA

Data di pubblicazione: 23/01/2019

AUTORI

FALLON STEWART J
MCDOUGALL ANDREW J
ESPINOZA TOM
ROBERTS DAVID T
BROOKS STEVEN
KIND PETER K
KENNARD MARK J
BOND NICK
MARSHALL SHARON M
SCHMIDT DAN
HUGHES JANE

ENTE DI AFFERENZA

RESEARCH SCHOOL OF EARTH SCIENCES AUSTRALIAN NATL UNIV CANBERRA ACT AUSTRALIA
QUEENSLAND DEPT NATURAL RESOURCES MINES & ENERGY BUNDABERG QLD AUSTRALIA
SEQWATER IPSWICH BRISBANE QLD AUSTRALIA
QUEENSLAND DEPT AGRICULTURE & FISHERIES BRISBANE QLD AUSTRALIA
GRIFFITH UNIV BRISBANE QLD AUSTRALIA
MURRAY DARLING BASIN FRESHWATER RSCH CTR LATROBE UNIV ALBURY WODONGA VICTORIA AUSTRALIA
FRED HUTCHINSON CANCER RSCH CTR US

RIVISTA

PLoS ONE, 14(1), e0210168

IMPACT FACTOR

2,870

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