Growth of Moina macrocopa (Straus 1820) (Crustacea, Cladocera):: influence of trophic conditions, population density and temperature

被引：30

作者：

Benider, A

Tifnouti, A

Pourriot, R

机构：

[1] Fac Sci Semlalia, Dept Biol, Lab Hydrobiol, Marrakech, Morocco

[2] Univ Paris 06, Lab Appl Geol, F-75252 Paris, France

来源：

HYDROBIOLOGIA | 2002年 / 468卷 / 1-3期

关键词：

growth; trophic conditions; temperature; population density; cladocera; Moina macrocopa;

D O I：

10.1023/A:1015214530485

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The growth of a strain of Moina macrocopa (Straus 1820) isolated from an experimental stabilization pond in Marrakesh, was examined at seven concentrations of algae (6.25-6.25 x 10(5) cells ml(-1) and at 5 different temperatures (15-30 degreesC)). Feeding conditions influenced the growth rate as well as the maximum size that reached 1.8 mm at 25 degreesC and at the highest algal concentration (6.25 x 10(5) cell ml(-1)). The life span and number of moltings reached a maximum (17.4 days and 13 moltings) at average nutrient concentrations (6.25 x 10(5) cell ml(-1)). Juvenile stages varied from 1 to 3 and adult ones from 6 to 8. In the temperature interval tested, growth rate increased with temperature while longevity decreased. Temperature had less effect on maximal size than nutrient availability. Population density (but not crowding) influenced longevity and survival but had no effect on growth.

引用

页码：1 / 11

页数：11

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