María Eugenia Pereyra, Paula Bona, Pablo Siroski, Anusuya Chinsamy
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Although some thin sections revealed the classic lamellar, parallel-fibered, or woven bone matrices, others showed a variation and a mix between the organization of the bone tissue. These histological differences are likely related to variability in the growth dynamics of caimans. In some bones of the juveniles studied, remnants of embryonic bone were observed. Osteohistological variation related to prevailing environmental conditions is documented. Furthermore, our results show ontogenetic variation in the type of bone tissues deposited throughout the development of <i>C. latirostris</i>. This study offers a broad framework for life history interpretations for <i>C. latirostris</i> and provides insight into the evolutionary history and ontogenetic growth of extinct crocodylian lineages.</p>","PeriodicalId":16528,"journal":{"name":"Journal of Morphology","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jmor.21687","citationCount":"0","resultStr":"{\"title\":\"Ontogenetic and interelemental study of appendicular bones of Caiman latirostris Daudin, 1802 sheds light on osteohistological variability in crocodylians\",\"authors\":\"María Eugenia Pereyra, Paula Bona, Pablo Siroski, Anusuya Chinsamy\",\"doi\":\"10.1002/jmor.21687\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The osteohistology of vertebrates provides a reliable source to deduce biological information, particularly regarding growth and development. 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Osteohistological variation related to prevailing environmental conditions is documented. Furthermore, our results show ontogenetic variation in the type of bone tissues deposited throughout the development of <i>C. latirostris</i>. This study offers a broad framework for life history interpretations for <i>C. latirostris</i> and provides insight into the evolutionary history and ontogenetic growth of extinct crocodylian lineages.</p>\",\"PeriodicalId\":16528,\"journal\":{\"name\":\"Journal of Morphology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jmor.21687\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Morphology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jmor.21687\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ANATOMY & MORPHOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Morphology","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jmor.21687","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ANATOMY & MORPHOLOGY","Score":null,"Total":0}
引用次数: 0
摘要
脊椎动物的骨组织学为推断生物信息,特别是有关生长和发育的信息提供了可靠的来源。尽管对新蜥形目(鳄形目,中目)的骨组织学研究相对较多,但对该类群内物种的研究数量仍然很少。众所周知,现存鳄鱼的种内变异与环境条件、栖息地、摄食和其他种群内因素有关。在这里,我们分析了活体南美洲凯门鳄(Caiman latirostris)在孵化后的整个生长过程中的骨组织学。我们对 13 个不同大小的人工饲养个体和野生个体的几块附骨进行了组织学研究。尽管一些薄片显示出典型的片状、平行纤维状或编织状骨基质,但其他薄片显示出骨组织结构的变化和混合。这些组织学差异很可能与凯门鳄的生长动态变化有关。在研究的一些幼体骨骼中,可以观察到胚胎骨的残余。骨组织学上的差异与当时的环境条件有关。此外,我们的研究结果表明,在长尾巨嘴鸟的整个发育过程中,沉积的骨组织类型存在着个体发育上的差异。这项研究为解释 C. latirostris 的生活史提供了一个广泛的框架,并为了解已灭绝的鳄类的进化史和本体生长提供了深入的见解。
Ontogenetic and interelemental study of appendicular bones of Caiman latirostris Daudin, 1802 sheds light on osteohistological variability in crocodylians
The osteohistology of vertebrates provides a reliable source to deduce biological information, particularly regarding growth and development. Although osteohistological studies in Neosuchia (Crocodyliformes, Mesoeucrocodylia) are relatively numerous, the number of species studied within the group is still small. Extant crocodilians are known to exhibit intraspecific variability linked to environmental conditions, habitat, feeding, and other intrapopulation factors. Here, we analyzed the osteohistology of the living South American Caiman latirostris throughout posthatching ontogeny. The histology of several appendicular bones of 13 different-sized captive and wild individuals were examined. Although some thin sections revealed the classic lamellar, parallel-fibered, or woven bone matrices, others showed a variation and a mix between the organization of the bone tissue. These histological differences are likely related to variability in the growth dynamics of caimans. In some bones of the juveniles studied, remnants of embryonic bone were observed. Osteohistological variation related to prevailing environmental conditions is documented. Furthermore, our results show ontogenetic variation in the type of bone tissues deposited throughout the development of C. latirostris. This study offers a broad framework for life history interpretations for C. latirostris and provides insight into the evolutionary history and ontogenetic growth of extinct crocodylian lineages.
期刊介绍:
The Journal of Morphology welcomes articles of original research in cytology, protozoology, embryology, and general morphology. Articles generally should not exceed 35 printed pages. Preliminary notices or articles of a purely descriptive morphological or taxonomic nature are not included. No paper which has already been published will be accepted, nor will simultaneous publications elsewhere be allowed.
The Journal of Morphology publishes research in functional, comparative, evolutionary and developmental morphology from vertebrates and invertebrates. Human and veterinary anatomy or paleontology are considered when an explicit connection to neontological animal morphology is presented, and the paper contains relevant information for the community of animal morphologists. Based on our long tradition, we continue to seek publishing the best papers in animal morphology.