Jatteau and Bardonnet, 2008


No detailed citation.

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Alosa alosa Egg Temperature for incubation Eggs were collected by means of an egg trap and placed into 8 l McDonal jars for incubation. After a 5 day incubation at 19°C, larvae hatched 8.0 °C
Alosa alosa Egg Degree-days for incubation After a 5 day incubation at 19°C, larvae hatched 5.0 °C * day
Alosa alosa Larvae Larvae behaviour It has been observed that larvae would grow under the gravel, which could suggest that their photoresponse evolves from a strong positive photoresponse at hatching to negative photoresponse in the course of larval stage. […] larvae were caught near the surface Demersal
Alosa alosa Larvae Reaction to light Previous experiments carried out on hatching larvae (from day 1 to day 3) showed that allis shad larvae photoreponse was positive at hatching. It is however, unknown as to whether this response changes with ontogenesis. […] Allis shad larvae exbited a positive photoresponse from hatching until one month old (total length = 20 mm). This behavior is not in agreement with first field observations which found larvae hidden in the substratum. Photopositive
Alosa alosa Larvae Temperature during larval development Larvae hatched and were put in troughs, at a density c. 50 larvae l-1.Temperature varie between 18.3 and 18.6°C, dissolved oxygen between 8.4 and 7.6 mg.l-1, pH was constant at 7.6) 50.0 °C
Alosa alosa Larvae Onset of exogeneous feeding By 3 days post-hatch [18-19°C], larvae were fed every 10 min with brine shrimp Artemia salini nauplii 18.5 °C * day
Oncorhynchus mykiss Larvae Reaction to light Oncorhynchus mykiss yolk-sac alevins exhibit a strong negative photoresponse during their under gravel residency, which switches rapidly towards a positive one at the time of emergence Photopositive