Department of Animal Ecology, Institute of Ecology and Environmental Protection, Nicolaus Copernicus University, Gagarina 9, 87-100 Toruń, Poland.
Microsc Res Tech. 2012 Jul;75(7):955-67. doi: 10.1002/jemt.22020. Epub 2012 Feb 27.
Egg morphology of nine species of the cluster fly genus Pollenia Robineau-Desvoidy was studied with scanning electron microscopy. Funnel-shaped micropylar area, chorion covered with centrally depressed hexagons, well developed hatching pleats on the dorsal surface encompassing the median area were found in eggs of all species: P. amentaria (Scopoli), P. angustigena Wainwright, P. atramentaria (Meigen), P. labialis Robineau-Desvoidy, P. mayeri Jacentkovsky, P. pediculata Macquart, P. rudis (Fabricius), P. similis (Jacentkovsky), and P. vagabunda (Meigen). Untypical for Calliphoridae, a dual morphological structure of plastron-bearing area is described here for the first time. On the basis of our observations, all species studied share the presence of a plastron respiratory function on the entire surface between the hatching lines. Differences between species were found in the shape of the longitudinal hatching pleats and the proportion between 'island pattern' and 'hexagonal pattern' of their chorionic surface, and in the intensity of perforation of hexagons of the median area. Comparisons of Pollenia egg morphology with that of other representatives of Calliphoridae revealed its unique structure, allowing easy differentiation from other representatives of the family.
利用扫描电子显微镜研究了 9 种花蝇属 Pollenia Robineau-Desvoidy 的卵形态。发现所有物种的卵都具有漏斗状的卵孔区、被中央凹陷的六边形覆盖的卵壳、在背表面上发育良好的覆盖中域的孵化褶皱：P. amentaria (Scopoli)、P. angustigena Wainwright、P. atramentaria (Meigen)、P. labialis Robineau-Desvoidy、P. mayeri Jacentkovsky、P. pediculata Macquart、P. rudis (Fabricius)、P. similis (Jacentkovsky)和 P. vagabunda (Meigen)。这里首次描述了一种非典型的 Calliphoridae 类蜉蝣科的卵壳下区域的双重形态结构。根据我们的观察，所有研究的物种在孵化线之间的整个表面都具有卵壳呼吸功能。在纵向孵化褶皱的形状、其卵壳表面的“岛状图案”和“六边形图案”之间的比例以及中域六边形的穿孔强度方面，发现了物种之间的差异。与其他蜉蝣科代表的 Pollenia 卵形态比较表明，其具有独特的结构，容易与该科的其他代表区分开来。
