Effects of temperature on acoustic and visual courtship and reproductive success in the two-spotted goby Pomatoschistus flavescens.

Fish are ectothermic and small changes in water temperature could greatly affect reproduction. The two-spotted goby is a small semi-pelagic species that uses visual and acoustic displays to mate. Here, we studied the effect of temperature (16 and 20 °C) on acoustic and visual courtship and associated reproductive success in 39 males.

[Visual acuity study in the child 18 months to 2 years old].

Visual acuity for a child may be determined using objective instrumental methods (especially for children under 18 months) or using clinical examination at the optotype--subjective methods (for children after 18 months). The use of 2 or 3 different optotypes, which are attractive for children, is necessary because of their great capacity of memorizing the tests. The author presents a personal optotype model, with seven different images, which have to be recognized by the children from a distance of 2.

[Decrease of the functional affinity of rheumatoid factors under the effect of tiopronin].

Sixteen rheumatoid arthritis patients were serologically examined, before and after a 2-month treatment with tiopronine (TP). The titer of agglutinating rheumatoid factor (RF) as well as the level of non-agglutinating RF were significantly reduced in serum and synovial fluid (SF). The functional affinity of the remaining RF was attenuated in serum (p less than 0.

[Treatment of strabismus with focused prisms in 1984].

The use of prisms in treatment of strabismus not only varies according to the author involved but often, a same author will change his opinion on the subject as time goes by. In the first case aetiopathological conceptions and the finality of treatment differ, in the second case improved theoretical knowledge and new possibilities in examination techniques and treatment etc., come into play.