脑容量个体发育的比较研究：有袋类动物和胎盘哺乳动物

Comparative Study of Brain Size Ontogeny: Marsupials and Placental Mammals.

作者信息

De Miguel Carmen, Saniotis Arthur, Cieślik Agata, Henneberg Maciej

机构信息

Biological Anthropology and Comparative Anatomy Research Unit (BACARU), School of Biomedicine, The University of Adelaide, Adelaide 5005, Australia.

Department of Anthropology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wroclaw, Poland.

出版信息

Biology (Basel). 2022 Jun 10;11(6):900. doi: 10.3390/biology11060900.

DOI:10.3390/biology11060900

PMID:35741421

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9219685/

Abstract

There exists a negative allometry between vertebrate brain size and body size. It has been well studied among placental mammals but less is known regarding marsupials. Consequently, this study explores brain/body ontogenetic growth in marsupials and compares it with placental mammals. Pouch young samples of 43 koalas (), 28 possums (), and 36 tammar wallabies () preserved in a solution of 10% buffered formalin, as well as fresh juveniles and adults of 43 koalas and 40 possums, were studied. Their brain size/body size allometry was compared to that among humans, rhesus monkeys, dogs, cats, rats, guinea pigs, rabbits, wild pigs, and mice. Two patterns of allometric curves were found: a logarithmic one (marsupials, rabbits, wild pigs, and guinea pigs) and a logistic one (the rest of mammals).

摘要

脊椎动物的脑大小与身体大小之间存在负异速生长关系。这在胎盘哺乳动物中已有充分研究，但关于有袋动物的情况了解较少。因此，本研究探讨了有袋动物脑/体的个体发育生长，并将其与胎盘哺乳动物进行比较。研究了保存在10%缓冲福尔马林溶液中的43只树袋熊、28只负鼠和36只帚尾袋鼩的育儿袋幼崽样本，以及43只树袋熊和40只负鼠的新鲜幼崽和成年个体。将它们的脑大小/身体大小异速生长与人类、恒河猴、狗、猫、大鼠、豚鼠、兔子、野猪和小鼠的进行了比较。发现了两种异速生长曲线模式：对数模式（有袋动物、兔子、野猪和豚鼠）和逻辑斯蒂模式（其余哺乳动物）。