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Titolo:
RESOURCE USE BY 5 SYMPATRIC PARROTFISHES IN THE SAN-BLAS ARCHIPELAGO,PANAMA
Autore:
MCAFEE ST; MORGAN SG;
Indirizzi:
SUNY STONY BROOK,MARINE SCI RES CTR STONY BROOK NY 11795 SUNY STONY BROOK,MARINE SCI RES CTR STONY BROOK NY 11795 MOSS LANDING MARINE LABS MOSS LANDING CA 95039
Titolo Testata:
Marine Biology
fascicolo: 3, volume: 125, anno: 1996,
pagine: 427 - 437
SICI:
0025-3162(1996)125:3<427:RUB5SP>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORAL-REEF FISH; URCHIN DIADEMA-ANTILLARUM; MASS MORTALITY; SEA-URCHIN; INTERSPECIFIC COMPETITION; ALGAL COMMUNITIES; GRAZING INTENSITY; DIVERSITY; SCARIDAE; POPULATIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
54
Recensione:
Indirizzi per estratti:
Citazione:
S.T. Mcafee e S.G. Morgan, "RESOURCE USE BY 5 SYMPATRIC PARROTFISHES IN THE SAN-BLAS ARCHIPELAGO,PANAMA", Marine Biology, 125(3), 1996, pp. 427-437

Abstract

Resource use by five sympatric species of parrotfish was quantified in the San Bias Archipelago of the Republic of Panama from March to August 1987. Detailed observations of parrotfishes on patch reefs and surrounding seagrass beds showed that they partition resources with respect to habitat, food and size, but not time. Although parrotfishes shared resources, the proportions of each resource used differed significantly among species. Scarus iserti (Bloch) scraped filamentous microalgae that grew from eroded coral pavement on lower slopes of patch reefsand in ''halos,'' the area of sparse vegetation surrounding reefs. Sparisoma viride (Bonnaterre) foraged on upper slopes of patch reefs where they mostly took bites from dead coral and associated algae. S. aurofrenatum (Cuvier and Valenciennes) had the broadest diet, which consisted mostly of seagrasses and macro- and microalgae that were attachedto dead coral on lower reef slopes and in halos. Although S. chrysopterum (Bloch and Schneider) commonly occurred on patch reefs, it primarily foraged in seagrass beds that surround them. S. rubripinne (Cuvierand Valenciennes) was distributed most widely, ranging from seagrass beds to reef crests, where it took bites from seagrasses, dead coral and macroalgae. Juveniles of all species occurred on lower slopes or inhalos where they scraped filamentous microalgae from coral pavement. As they matured, parrotfishes moved into other habitats changing access to different types of food. All of these parrotfishes fed throughoutthe daytime, and resource use did not differ between morning and afternoon.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 13:08:03