Effects of sexual reproduction of the inferior competitor Brachionus calyciflorus on its fitness against Brachionus angularis

Chen Li; Cuijuan Niu

doi:10.1007/s00343-015-4071-4

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Effects of sexual reproduction of the inferior competitor Brachionus calyciflorus on its fitness against Brachionus angularis

OriginalPaper | Updated：2023-05-16

- Effects of sexual reproduction of the inferior competitor Brachionus calyciflorus on its fitness against Brachionus angularis
- Effects of sexual reproduction of the inferior competitor Brachionus calyciflorus on its fitness against Brachionus angularis
- 海洋湖沼学报（英文） 2015年33卷第2期页码：356-363
- Affiliations：
  
  Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering College of Life Sciences Beijing Normal University
- Author bio：
- Funds：
  
  Supported by the National Natural Science Foundation of China (No. 30970349)
- DOI：10.1007/s00343-015-4071-4
  中图分类号：
- 网络首发：2014-11-06，
  
  纸质出版：2015
- Accepted：
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Effects of sexual reproduction of the inferior competitor Brachionus calyciflorus on its fitness against Brachionus angularis[J]. 海洋湖沼学报（英文）, 2015,33(2):356-363.

Li, C., Niu, C. Effects of sexual reproduction of the inferior competitor Brachionus calyciflorus on its fitness against Brachionus angularis, ., Chin. J. Ocean. Limnol. 33, 356–363 (2015). https://doi.org/10.1007/s00343-015-4071-4
Effects of sexual reproduction of the inferior competitor Brachionus calyciflorus on its fitness against Brachionus angularis[J]. 海洋湖沼学报（英文）, 2015,33(2):356-363. DOI： 10.1007/s00343-015-4071-4.

Li, C., Niu, C. Effects of sexual reproduction of the inferior competitor Brachionus calyciflorus on its fitness against Brachionus angularis, ., Chin. J. Ocean. Limnol. 33, 356–363 (2015). https://doi.org/10.1007/s00343-015-4071-4 DOI：

摘要

Abstract

Sexual reproduction adversely affects the population growth of cyclic parthenogenetic animals. The density-dependent sexual reproduction of a superior competitor could mediate the coexistence. However

the cost of sex may make the inferior competitor more vulnerable. To investigate the effect of sexual reproduction on the inferior competitor

we experimentally paired the competition of one Brachionus angularis clone against three Brachionus calyciflorus clones. One of the B. calyciflorus clones showed a low propensity for sexual reproduction

while the other two showed high propensities. The results show that all B. calyciflorus clones were excluded in the competition for resources at low food level. The increased food level promoted the competition persistence

but the clones did not show a clear pattern. Both the cumulative population density and resting egg production increased with the food level. The cumulative population density decreased with the mixis investment

while the resting egg production increased with the mixis investment. A trade-off between the population growth and sexual reproduction was observed in this research. The results indicate that although higher mixis investment resulted in a lower population density

it would not determinately accelerate the exclusion process of the inferior competitor. On the contrary

higher mixis investment promoted resting egg production before being excluded and thus promised a long-term benefit. In conclusion

our results suggest that mixis investment

to some extent

favored the excluded inferior competitor under fierce competition or some other adverse conditions.

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references

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