Unknown: L II 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

1130-1200

1

240

clear

narrow

stern

59% of NL

ca. 25

 

Egg: The yolk is rough-surfaced, but clear, and the oil globule is red-amber (A). There are black stellate pigment spots on the embryo (in 2 rows), and on the oil globule (A1), but none were seen on the yolk.  A few of the eggs seen were slightly oval. Incubation is about 70 hours (22-23°C).

Larva: The larva is unmistakable, with the roughness of the yolk transferred to the finfold (B1) and a white patch of pigment in the dorsal finfold above the anus (B). The eyes are pigmented prior to hatching, but the mouth is not yet functional (B). B: 3 days PC, but newly hatched(22°C).

The egg and larva are very similar to LIIIE5, and they might even be the same species. The larva was not successfully reared past first-feeding. In August 2006 a specimen was collected for DNA barcoding, but the sequence is not yet available.

This egg was uncommon off Park Rynie, having been seen on only 7 occasions, all as single eggs, and all in winter (blue graph). The egg was not seen in the DHM samples. Only 4 eggs were found in the Park Rynie linked samples, 2 inshore and 2 offshore.