Oxyporhamphus micropterus micropterus (Valenciennes, 1847)
Shortwing flyingfish
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 |
1870-2110 |
0 |
N/A |
clear |
narrow |
N/A |
70% of NL |
47-50* |
* Literature
Egg: This egg is instantly recognizable by the combination of size and the presence of numerous simple pointed spines (A & B). The yolk appears to be clear. Black pigment spots are visible on the embryo (B). I have not been able to gauge incubation time as I have not taken a newly spawned egg. It certainly exceeds 4 days (24°C).
Larva: Upon hatching, the eyes and mouth are not fully developed (C & D), and the larva carries a yolk sac (C & D). Myomeres were not counted due to the dense pigment of newly hatched larvae. C & D: NH, E: 2 days, F: 6days (24°C).
One adult and 3 larvae, hatched from this egg, have been successfully barcoded (BOLD), confirming the identification given by Shao et. al. ( 2001).
This egg was not common off Park Rynie, with an average of about 3 per year over the study period. It is a spring and summer spawner (blue graph). The species has shown no unusual pattern of occurrence during the study (white graph). Eggs were more common (75%), in offshore samples from the Park Rynie linked samples, indicating most spawning around the 40-50m depth contours, but numbers are low. See Section 7.3 and Table 1 of the Introductory Notes, for more information on the linked samples.
linked samples |
Offshore |
Inshore |
Eggs |
43 |
14 |
Hits |
32 |
11 |
|