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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 35, No. 2, 2014, pp. 132-141
Bioline Code: zr14015
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 35, No. 2, 2014, pp. 132-141

 en Factors determining the average body size of geographically separated Arctodiaptomus salinus check for this species in other resources (Daday, 1885) populations
Anufriieva, Elena V. & Shadrin, Nickolai V.


Arctodiaptomus salinus check for this species in other resources inhabits water bodies across Eurasia and North Africa. Based on our own data and that from the literature, we analyzed the influences of several factors on the intra- and inter-population variability of this species. A strong negative linear correlation between temperature and average body size in the Crimean and African populations was found, in which the parameters might be influenced by salinity. Meanwhile, a significant negative correlation between female body size and the altitude of habitats was found by comparing body size in populations from different regions. Individuals from environments with highly varying abiotic parameters, e.g. temporary reservoirs, had a larger body size than individuals from permanent water bodies. The changes in average body mass in populations were at 11.4 times, whereas, those in individual metabolic activities were at 6.2 times. Moreover, two size groups of A. salinus in the Crimean and the Siberian lakes were observed. The ratio of female length to male length fluctuated between 1.02 and 1.30. The average size of A. salinus in populations and its variations were determined by both genetic and environmental factors. However, the parities of these factors were unequal in either spatial or temporal scales.

Copepoda; Arctodiaptomus salinus; Body size; Sexual dimorphism; Variability

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