新生儿鳞片骨化状况的调查

IF 1.1 2区生物学 Q3 ZOOLOGY

Herpetological Monographs Pub Date : 2001-12-01 DOI:10.2307/1467041

J. Maisano

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引用次数: 81

摘要

描述和比较了21种鳞类动物在孵化或出生后不久骨骼的骨化状态。新生儿中跖骨骨化中心和骨骺二级中心的存在因物种而异，而骨骺骨化和软骨内钙化以及籽状前体骨化的出现主要是出生后的现象。这些数据表明，在胎生和骨骼发育不成熟的新生儿之间可能存在因果关系，而在孵化或出生时的骨化状态可能归因于总体的系统发育。在这项研究中所代表的分支中，phry- nosomatids, teiioids和amphibaenids表现出最成熟的骨骼新生，而gekkotans, xantusiids和anguids则相反。

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A SURVEY OF STATE OF OSSIFICATION IN NEONATAL SQUAMATES

The state of ossification of the skeleton at hatching or birth and shortly thereafter is described and compared for 21 squamate species. The presence in the neonate of metapodial ossification centers and epiphyseal secondary centers varies among species, whereas the appearance of apophyseal ossifications and endochondral calcifications and the ossification of sesamoid precur- sors are predominantly postnatal phenomena. The data suggest a possible causal relationship be- tween viviparity and skeletally immature neonates, whereas state of ossification at hatching or birth is probably attributable to phylogeny overall. Of the clades represented in this investigation, phry- nosomatids, teiioids, and amphisbaenians exhibit the most skeletally mature neonates, whereas the reverse is true of gekkotans, xantusiids, and anguids.

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来源期刊

Herpetological Monographs 生物-动物学

CiteScore

5.40

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Since 1982, Herpetological Monographs has been dedicated to original research about the biology, diversity, systematics and evolution of amphibians and reptiles. Herpetological Monographs is published annually as a supplement to Herpetologica and contains long research papers, manuscripts and special symposia that synthesize the latest scientific discoveries.