التفاصيل البيبلوغرافية
| العنوان: |
Fruit manipulation of the palm Syagrus romanzoffiana by vertebrates in southern Brazil. |
| Alternate Title: |
Manipulação de frutos da palmeira Syagrus romanzoffiana por vertebrados no sul do Brasil. (Portuguese) |
| المؤلفون: |
Roman, Cassiano, Neto, Leopoldo Telles, Cáceres, Nilton Carlos |
| المصدر: |
Neotropical Biology & Conservation; May2010, Vol. 5 Issue 2, p101-105, 5p, 1 Graph |
| مصطلحات موضوعية: |
FORESTS & forestry, SYAGRUS, PALMS, TREES, VERTEBRATES, FRUIT, ANIMAL traps, NASUA nasua |
| مصطلحات جغرافية: |
BRAZIL |
| Abstract (English): |
A year-long study was carried out in a deciduous forest to examine the vertebrate manipulation on fruits of Syagrus romanzoffiana in southern Brazil. Eleven 50x50 cm-track traps (each one baited with ten ripe fruits) were placed monthly around 11 adult palm trees, totalling a sampling effort of 935 traps. The fruits removed (absent) or chewed (left in situ) by a given vertebrate species were counted for each trap. Three species of mammals and one bird were monitored. The coati (Nasua nasua) removed more fruits (N = 250; 50 %) than chewed (N = 130; 26 %), leaving intact 120 fruits (24 %). The dusky-legged guan (Penelope obscura) also removed more fruits (N = 107; 43 %) than chewed (N = 44; 18 %), leaving intact 96 (39 %). On the other hand, the opossum (Didelphis albiventris) removed 127 (13 %), but chewed 622 (63 %), leaving intact 236 (24 %). Similarly, the agouti (Dasyprocta azarae) removed 16 (12 %), and chewed 64 (49 %), leaving intact 51 fruits (39 %). Results are discussed in light of the roles of these vertebrate species in seed dispersal of S. romanzoffiana. [ABSTRACT FROM AUTHOR] |
| Abstract (Portuguese): |
Este estudo teve a duração de um ano e avaliou a manipulação por vertebrados (três espécies de mamíferos e uma de ave) nos frutos da palmeira Syagrus romanzoffiana no sul do Brasil. Onze armadilhas de pegada de 50x50 cm (cada uma iscada com 10 frutos maduros) foram colocadas próximas a onze palmeiras adultas, totalizando um esforço amostral de 935 armadilhas. Os frutos removidos (ausentes) ou mastigados (deixados in situ) pelas espécies de vertebrados foram contabilizadas para cada armadilha. Três espécies de mamíferos e uma de ave foram monitoradas. O coati (Nasua nasua) removeu 250 frutos (50%), mastigou 130 (26%) e deixou intactos 120 frutos (24%). O jacu (Penelope obscura) também removeu mais frutos (N = 107; 43%) do que mastigou (N = 44; 18%), deixando intactos 96 frutos (39%). O gambá (Didelphis albiventris) removeu 127 (13%), e mastigou 622 (63%), deixando intactos 236 (24%). Similarmente, a cutia (Dasyprota azarae) removeu 16 (12%), mastigou 64 (49%), deixando intactos 51 frutos (39%). Os resultados são discutidos relacionando o papel das espécies de vertebrados na dispersão de sementes de S. romanzoffiana. [ABSTRACT FROM AUTHOR] |
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