Jatteau and Bardonnet, 2008



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Associated characteristics


Species Development state Trait Primary Data Secondary Data
Alosa alosa Egg Degree-days for incubation After a 5 day incubation at 19°C, larvae hatched 5.0 °C * day
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 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) 18.5 °C
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
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
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
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