Unknown: M III A9

Unknown

 

 

Egg diameter in µm

Number of oil globules

Diameter of oil globule in µm

Yolk texture

Perivitelline space

Position of oil globule at hatch

Gut length   at eye- pigment stage

Myomeres

600

multiple

NA

clear

 narrow

Mostly astern

44% of NL

ca 45

 

Egg: The oil globules in this egg are scattered about the yolk surface (A). The only pigment seen in the egg is a few yellow spots on the embryo just prior to hatching. Incubation is about 24 hours.

Larva: The NH larva has 3 yellow pigment spots in the finfolds (B).  The 3-day larva is so similar to MIIA6, that these are very likely closely related species (the big egg size difference would seem to rule out same species). B: NH, C: 1 day, D: 3 days (23°C).

No attempt was made to rear this egg, as it was rare, and only found singly. No larvae have yet been successfully sequenced. Positive identification must await DNA barcoding.

The very few eggs seen, suggest year-round spawning (blue graph). These eggs were not seen in the DHM samples. Of the 7 eggs seen so far in the Park Rynie linked samples, only 1 was in an inshore sample. See Section 7.3 and Table 1 of the Introductory Notes, for more information on the linked samples.