Titlebook: Aquatic Oligochaete Biology V; Proceedings of the 5 T. B. Reynoldson,K. A. Coates Conference proceedings 1994 Springer Science+Business Med

拾落穗

wangle

FECT

潜移默化

COLON

Hybrid Differential Software Testing, Cestode parasites were recorded infesting . and . populations..Oligochaeta densities increased with depth, but low oxygen concentrations (less than 1 mg 1.) during a long period (4 months) in some basins of the lake acted as a key factor in reducing the density of worms and the species richness to one species, ..

愤怒历史

Some characteristics of genetic variants of , (Müller, 1774) (Oligochaeta: Tubificidae) in laboratorhed higher weights and produced five times as many cocoons as Type A, whereas number of eggs per cocoon were not different between these Types. Type B also had the lowest mortality in 16-week experiments with changing temperatures.

平项山

A preliminary review of the taxonomic characters used for the systematics of the genus , Claparède (or blood vessels are not well documented for a significant proportion of the species and these characters need to be tested for environmentally induced variation. Taxonomic value of structural traits is strengthened against characters related to size. Thus, a key to the species of the genus is provided, emphasising such structural characters.