Sillaginidae: F III A9

Sillago chondropus Bleeker, 1849

Clubfoot sillago

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
745-790	1	190-215	segmented	narrow	stern	46% of NL	ca 30

Egg:  The dense cover of bright yellow to brown/yellow pigment on the embryo and oil globule, along with the segmented yolk, instantly identifies this egg. Incubation time is about 24-28 hours (25°C), which means, in my samples, they were always on the verge of hatching when seen in the late afternoon or evening.

Larva:  The early larva is easily identified because it retains the heavy pigmentation seen in the egg (B & C).  By day 3, pigmentation is fading, but gut length, and the high myomere count will confirm identification (D). B & C: NH, D: 3 days (25°C).

The egg was not successfully reared. Six larvae from this egg have been barcoded, matching 4 adults collected locally (BOLD).

Not much can be gleaned, from the sparse data, regarding the spawning period off Park Rynie (blue graph). The egg was not seen in the DHM samples. The appearance of this egg in the latter half of the study period is real, as the egg is too striking to miss (white graph). The Park Rynie linked samples had 84% inshore, suggesting spawning within 1km of the shore . See Section 7.3 and Table 1 of the Introductory Notes, for more information on the linked samples.

Linked samples	Offshore	Inshore
Eggs	9	49
Hits	4	23