Discovery of males of Simocephalus himalayensis (Cladocera, Simocephalus), with the re-description of females

Xinlu Shi; Sen Xu; Chenchen Xue; Xiaona Huang; Guijie Liu; Yuanjun Zhao

doi:10.1007/s00343-011-0010-1

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Discovery of males of Simocephalus himalayensis (Cladocera, Simocephalus), with the re-description of females

OriginalPaper | Updated：2023-05-16

- Discovery of males of Simocephalus himalayensis (Cladocera, Simocephalus), with the re-description of females
- Discovery of males of Simocephalus himalayensis (Cladocera, Simocephalus), with the re-description of females
- 海洋湖沼学报（英文） 2011年29卷第1期页码：206-212
- Affiliations：
  
  1. Hangzhou Key Laboratory for Animal Adaptation and Evolution and Laboratory of Experimental Animal Science Hangzhou Normal University
  2. State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences
  3. Key Laboratory of Animal Biology Chongqing Normal University
  4. Great Lakes Institute for Environmental Research University of Windsor
- Author bio：
- Funds：
  
  Supported by the National Natural Science Foundation of China (No. 31071880, 31030059), National Key Laboratory of Freshwater Ecology and Biotechnology of China (No. 2009FB11), and Hangzhou Key Laboratory for Animal Adaptation and Evolution, Hangzhou Normal University (No. 2010100333T05)
- DOI：10.1007/s00343-011-0010-1
  中图分类号：
- 网络首发：2011-01-15，
  
  纸质出版：2011
- Accepted：
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Discovery of males of Simocephalus himalayensis (Cladocera, Simocephalus), with the re-description of females[J]. 海洋湖沼学报（英文）, 2011,29(1):206-212.

Shi, X., Xu, S., Xue, C. et al. Discovery of males of Simocephalus himalayensis (Cladocera, Simocephalus), with the re-description of females., Chin. J. Ocean. Limnol. 29, 206–212 (2011). https://doi.org/10.1007/s00343-011-0010-1
Discovery of males of Simocephalus himalayensis (Cladocera, Simocephalus), with the re-description of females[J]. 海洋湖沼学报（英文）, 2011,29(1):206-212. DOI： 10.1007/s00343-011-0010-1.

Shi, X., Xu, S., Xue, C. et al. Discovery of males of Simocephalus himalayensis (Cladocera, Simocephalus), with the re-description of females., Chin. J. Ocean. Limnol. 29, 206–212 (2011). https://doi.org/10.1007/s00343-011-0010-1 DOI：

摘要

Abstract

The lack of data concerning the morphology of male cladocerans greatly impedes our understanding of the systematics of cladocerans. This is because the differentiation of males is of significant importance for distinguishing closely related species. Simocephalus himalayensis himalayensis Chiang & Chen

1974 (Cladocera

Simocephalus) is an endemic cladoceran species in the Tibetan plateau

China. To date

no information has been available regarding the morphology and biology of its males. In this study

we provide the morphological and biological data of the males that were produced in laboratory populations. The male individuals are about 1.01–1.20 mm long; the margin of antennulae possess two sensory papilla; dorsal valve margin smooth. Two vas deferens are located between the supra-anal angle and the proximal anal teeth. Sperm is round with a diameter of two micrometers. An updated morphological description and reproductive data of the females of this species are also provided.

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references

Chen S. 1985. Distribution of Cladocera in Hengduan Mountains. Technology Information in Freshwater Biology, 85: 34–35. (in Chinese)

Chen S, Shi X, Shi X. 1992. Description of a new subspecies of Simocephalus himalayensis Chiang et Chen, 1974 (Crustacea: Diplostraca). Natural Sciences Journal of Harbin Normal University, 8: 91–95. (in Chinese with English abstract).

Chiang S, Chen S. 1974. Crustacean in the Everest Area in China. In: Scientific Survey Reports on Biology and Alpine Physiology in the Everest Area in China. Science Press, Beijing, China. p. 127–136. (in Chinese)

Chiang S, Du N. 1979. Fauna Sinica, Crustacea, Freshwater Cladocera. Science Press, Academia Sinica, Beijing, China. (in Chinese)

Chiang X, Shen Y, Gong X. 1983. Aquatic invertebrates of the Tibetan plateau. Science Press, Academia Sinica, Beijing, China. 492p. (in Chinese)

Dumont H, Negrea S. 2002. Introduction to the class Branchiopoda. Backhuys, Leiden. 398p.

Kotov A A, Ishida S, Taylor D J. 2009. Revision of the genus Bosmina Baird, 1845 (Cladocera: Bosminidae), based on evidence from male morphological characters and molecular phylogenies. Zool. J. Linnean Soc., 156: 1–51.

Orlova-Bienkowskaja MY. (2001) Cladocera, Anomopoda: Daphniidae, genus Simocephalus. Backhuys, Leiden. 130p.

Shi X, Shi X. 1994. On two new species and two records of Simocephalus from China (Crustacea: Diplostraca: Daphniidae). Acta Zootaxonomica Sinica, 19: 403–411. (in Chinese with English abstract)

Shi X, Shi X. 1996. On the species and distribution of Simocephalus in Heilongjiang Province, China. Acta Zootaxonomica Sinica, 21: 263–276. (in Chinese with English abstract)

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