Huysentruyt Frank, Geerinckx Tom, Brunain Marleen, Adriaens Dominique
Evolutionary Morphology of Vertebrates, Department of Biology, Ghent University-UGent, K.L. Ledeganckstraat 35, 9000 Gent, Belgium.
J Morphol. 2011 May;272(5):573-82. doi: 10.1002/jmor.10935. Epub 2011 Feb 22.
Development in the osteocranium of Corydoras aeneus was studied based on 48 cleared and stained specimens and 10 series of serial sections. Development overall follows the general trends observed in siluriform development, with ossifications appearing as a response to functional demands. Early development of the skull occurs in two distinct phases. In a first phase, several new bony elements, all of dermal origin and related to feeding, appear shortly after yolk depletion (4.4 mm SL). Between 5 and 8 mm SL, developmental priorities seem to shift to size increase of the cartilaginous skull and no new bony elements appear. Finally, a second phase of osteogenesis occurs from 8 to 18 mm SL, in which all remaining dermal and perichondral bones appear.
基于48个透明和染色标本以及10组连续切片，对青铜鼠鲶的硬骨颅发育进行了研究。总体发育遵循在鲶形目发育中观察到的一般趋势，骨化是对功能需求的一种反应。头骨的早期发育分为两个不同阶段。在第一阶段，几个新的骨元素，均起源于真皮且与摄食有关，在卵黄耗尽后不久（体长4.4毫米）出现。在体长5至8毫米之间，发育重点似乎转向软骨颅的尺寸增加，没有新的骨元素出现。最后，从体长8至18毫米开始发生骨生成的第二阶段，在此阶段所有剩余的真皮骨和软骨周骨出现。
