The effect of calcium concentration on the calcification of Daphnia magna

被引:81
作者
Alstad, NEW [1 ]
Skardal, L [1 ]
Hessen, DO [1 ]
机构
[1] Univ Oslo, Dept Biol, N-0316 Oslo, Norway
关键词
D O I
10.4319/lo.1999.44.8.2011
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Soft waters are characterized by low Ca concentrations, and the distribution and relative success of Ca-demanding invertebrates could be limited by low Ca in extreme softwater localities. A further Ca depletion caused by reversed acidification could thus seriously affect freshwater crustaceans. Experimental studies on the calcification and Ca content of Daphnia magna clearly suggested the potential of a Ca limitation. Saturated calcification was reached at Ca concentrations >0.13 mM. Individuals reared in media with lower Ca concentrations were unable to compensate by increasing the period of postmolt Ca uptake and thus had a lower specific Ca content. Specific Ca content decreased from 4.2% to 1% of dry weight over the range 0.25-0.013 mM Ca. Even at the low Ca concentrations, only 10% of total Ca was reclaimed upon molting, the rest was lost with the old exuviae (similar to 40%) or to the ambient medium (similar to 50%). This incomplete calcification under low ambient Ca concentrations could represent a competitive drawback in Ca-poor waters.
引用
收藏
页码:2011 / 2017
页数:7
相关论文
共 34 条
[1]  
BOTTRELL HH, 1976, NORW J ZOOL, V24, P419
[2]  
COWGILL U M, 1976, Science of the Total Environment, V6, P79, DOI 10.1016/0048-9697(76)90008-5
[3]   THE INFLUENCE OF WATER ON REPRODUCTIVE SUCCESS AND CHEMICAL-COMPOSITION OF LABORATORY REARED POPULATIONS OF DAPHNIA-MAGNA [J].
COWGILL, UM ;
EMMEL, HW ;
HOPKINS, DL ;
APPLEGATH, SL ;
TAKAHASHI, IT .
WATER RESEARCH, 1986, 20 (03) :317-323
[4]  
FRANCE RL, 1987, CAN J FISH AQUAT SCI, V44, P107
[5]   CALCIUM BALANCE AND MOLTING IN THE CRUSTACEA [J].
GREENAWAY, P .
BIOLOGICAL REVIEWS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY, 1985, 60 (03) :425-454
[6]  
GREENAWAY P, 1974, J EXP BIOL, V61, P19
[7]  
GUILLARD RR, 1972, J PHYCOL, V8, P10, DOI 10.1111/j.0022-3646.1972.00010.x
[8]   Side effects of water liming on body size and eggs development of Daphnia species in Lake Orta (N. Italy) [J].
Hamza, W ;
Bonacina, C ;
Canale, C .
HYDROBIOLOGIA, 1998, 368 (1-3) :129-136
[10]   COMPETITION OR NICHE SEGREGATION BETWEEN HOLOPEDIUM AND DAPHNIA - EMPIRICAL LIGHT ON ABIOTIC KEY PARAMETERS [J].
HESSEN, DO ;
FAAFENG, BA ;
ANDERSEN, T .
HYDROBIOLOGIA, 1995, 307 (1-3) :253-261