Triglidae: L II A4
Trigloporus lastoviza africana Smith, 1934
African gurnard
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 |
1295-1320 |
1 |
230-325 |
clear |
narrow |
stern |
42% of NL |
ca35 |
Egg: The developing embryo is peppered with black and greenish-yellow stellate pigment spots, which also appear on the yolk and oil globule.. The oil globule is light amber. Incubation is 45-50 hours.
Larva: The early larva (B) retains the yellow-brown pigment seen in the late egg stage, with large stringy yellow and black chromatophores covering both finfolds. Finfold pigment has almost disappeared by day 4 (C), and the pectorals are enlarged, with a dark edge. But for the myomere count, one might mistake this larva for a scorpaenid (<30), platycephalid (27) or Thunini (39-41). B: 1 day, C: 3 days, D: 4 days (25°C).
This egg has only been seen off Park Rynie on 9 occasions (blue graph, to 2011). After not being seen since August 1997, the egg was seen 5 times in 2011, and twice in 2013. The larva hatched fron an egg collected 11 August 2013 has yielded a partial sequence (459bp) which matches 8 locally collected adults, 6 from the Agulhas Bank and 2 from Pumula in KZN (A. Connell 2015 update).