Penaz et al, 1981


No detailed citation.

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Tinca tinca Egg Oocyte diameter The eggs are yellow-green in colour and their mean size before activation and water intake was 0.79 ± 0.1 mm (N=30) [Also described in the literrature as 1.0-1.3 mm, 1.3-1.4 and as much as 1.9 for non-swollen eggs] 0.79 mm
Tinca tinca Egg Egg size after water-hardening The mean size of the eggs has increased 1.44 times, to 1.14 mm 1.14 mm
Tinca tinca Egg Egg adhesiveness The eggs of the tench are considerably sticky [The stickiness of the eggs was removed by a talcum suspension] Adhesive
Tinca tinca Egg Incubation time 3.1 [The development in egg-shells, i.e. the embryonic phase or the icubation period up to peak hatching, lasted 76 hours at the mean temperature of 19.6°C] 3.1 days
Tinca tinca Egg Temperature for incubation Mean temperature of incubation 19.6°C, best conditions at 20-22°C 21.0 °C
Tinca tinca Egg Degree-days for incubation 62.1 day degrees at 19.6°C [Also described at 100-120 DD at 20°C, 90 DD at 18°C, 80 DD at 20°C, 35 DD at 25°C, 63.5 DD at 19-22°C, 70-90 DD below 20°C] 110.0 °C * day
Tinca tinca Larvae Initial larval size Maximum hatching was observed at 3.82 mm of mean total length [Also described at 4.27, 4.0-4.2, 3.1-3.2] 4.1 mm
Tinca tinca Larvae Larvae behaviour By means of their adhesive glands, they "hang" themselves on the walls of the jars as well on submerged objects, remaining 'hung' in a vertical position psssively througout this step Demersal
Tinca tinca Larvae Reaction to light Newly hatched embryos are photophilous Photopositive
Tinca tinca Larvae Onset of exogeneous feeding 140 at 20.2 °C [At the mean temperature of 20.2°C, the embryonic period of development, starting with the moment of fertilization and ending with the passage of the embryos to exogeneous food, lasted 10 days (202 DD), while the incubation period lasted 62.1 DD] 140.0 °C * day