VARIATION IN GROWTH AND REPRODUCTION OF BOLOMYS LASIURUS (RODENTIA, MURIDAE) IN AN AMAZONIAN SAVANNA

被引：32

作者：

FRANCISCO, AD

MAGNUSSON, WE

SANAIOTTI, TM

机构：

[1] Departarnento de Ecologia., Instituto Nacional de Pesquisas da Amazonia, 69011-970, Manaus, AM

来源：

JOURNAL OF TROPICAL ECOLOGY | 1995年 / 11卷

关键词：

BOLOMYS; BRAZIL; FIRE; GROWTH; REPRODUCTION; RODENT; SAVANNA;

D O I：

10.1017/S0266467400008889

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Reproduction by Bolomys lasiurus is strongly seasonal in the Amazonian savanna of Alter do Chao, Para, Brazil. No pregnant or lactating females were recorded during the early dry season (July-September). Relative growth rates showed a similar though less consistent pattern. These patterns do not appear to be due to a direct effect of rainfall as high reproduction and growth were recorded during the late dry season (October-November), even though rainfall and the availability of fruits of shrubs were low during that period. It is likely that reinitiation of reproduction during the dry season is due to an increase in the availability of invertebrates and/or wind-dispersed seeds. Fire at the end of the dry season appears to affect the diet of the rats, causing an increase in the ingestion of invertebrates during the following wet season. However, our data do not indicate that fire affects individual reproductive output or growth.

引用

页码：419 / 428

页数：10

共 20 条

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