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Titolo:
Environmental influences on akinete germination of Anabaena circinalis andimplications for management of cyanobacterial blooms
Autore:
Baker, PD; Bellifemine, D;
Indirizzi:
CRC Water Qual & Treatment, Salisbury, SA 5108, Australia CRC Water Qual &Treatment Salisbury SA Australia 5108 SA 5108, Australia Univ S Australia, Sch Pharm & Biomed Sci, The Levels, SA 5095, Australia Univ S Australia The Levels SA Australia 5095 Levels, SA 5095, Australia
Titolo Testata:
HYDROBIOLOGIA
fascicolo: 1-3, volume: 427, anno: 2000,
pagine: 65 - 73
SICI:
0018-8158(20000601)427:1-3<65:EIOAGO>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLUE-GREEN-ALGAE; NEW-SOUTH-WALES; WATERFOWL HABITAT; SPORULATION; DESICCATION; CYLINDRICA; AUSTRALIA; VIABILITY; SPORES; RIVER;
Keywords:
cyanobacteria; Anabaena circinalis; akinetes; germination; wetland management; Murray River;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Baker, PD CRC Water Qual & Treatment, Private Mail Bag 3, Salisbury, SA 5108, Australia CRC Water Qual & Treatment Private Mail Bag 3 Salisbury SA Australia 5108
Citazione:
P.D. Baker e D. Bellifemine, "Environmental influences on akinete germination of Anabaena circinalis andimplications for management of cyanobacterial blooms", HYDROBIOL, 427(1-3), 2000, pp. 65-73

Abstract

Certain cyanobacteria, including the noxious bloom-forming species Anabaena circinalis Rabenhorst, produce thick-walled reproductive structures (akinetes) which may serve as a resting stage and ensure survival during adversegrowth conditions. The effect of certain environmental variables (temperature, salinity and desiccation) on akinete germination of A. circinalis was investigated under laboratory conditions, to determine the conditions underwhich germination was inhibited. The overall aims were to provide a broader understanding of the life history and ecology of this species and to assess suppression of akinete germination as a potential management strategy for control of cyanobacterial blooms in the lower Murray River, Australia. The results indicated a marked threshold of temperature and salinity tolerance for germination of A. circinalis, but the latter was not within a range that could be successfully manipulated in a natural ecosystem. However, it was found that desiccation of akinetes for moderately short periods can significantly impair their capacity to germinate. It is, therefore, speculated that allowing periodic drying of shallow wetlands adjacent to the Murray River and in other areas may reduce the size of the inoculum for population growth by reducing viability of akinetes in surface sediments.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 06:40:14