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在厦门海区,调查了19种常见的自由产卵的浮游桡足类卵型及其孵化率。发现卵有二种基本型:卵表光滑和具附属刺或鞘结构。卵的形态随种类而异,即使同种也常不同。卵径大小(D)似与产卵雌体大小呈正相关;而与海区水温(t)呈负相关,并可拟合为D=a·t~b。卵孵化率具有明显的季节变化,但和卵型的相关与否则依种的不同而异,这可能与种群不同的生态适应性有关。
In the Xiamen sea area, 19 common types of free-laid pelagic copepods and their hatching rates were investigated. There are two basic types of eggs found: oval smooth and with attached thorn or sheath structure. The shape of the egg varies by species, even though the same species is often different. The size of egg diameter (D) was positively correlated with the fecundity of oviparous females, but negatively correlated with the water temperature (t) in the sea area, and could be fitted as D = a · t ~ b. The hatching rate of eggs has obvious seasonal changes, but the correlation with egg type or not depends on the species, which may be related to the ecological adaptability of different populations.