南美肺鱼的文献研究摘要 / Publication research summaries · 2 entries
中文内容为资料集译写。每条说明所依据的摘要或正文范围。 / Chinese text is prepared for this collection. Summary evidence is identified for each entry.
Nature全文 PDF全部现生肺鱼类群的基因组揭示基因组扩张与四足动物演化
The genomes of all lungfish inform on genome expansion and tetrapod evolution
Nature · 2024
依据索引收录的作者摘要概括。
Summary based on the indexed author abstract.
主要发现 Key findings
南美肺鱼约91 Gb基因组含大量重复序列；比较提示转座元件抑制系统减少与扩张有关，肢体样鳍的丢失可能涉及 Shh 增强子缺失。
The approximately 91 Gb South American lungfish genome is repeat-rich; comparisons associate expansion with reduced transposon suppression and suggest Shh-enhancer loss contributed to reduced limb-like fins.
结论 Conclusions
巨大基因组可持续扩张，同时仍保留祖先染色体结构；鳍简化是后来的次生变化。
Enormous genomes can keep expanding while retaining ancestral chromosome organization, and fin simplification represents a later secondary change.
Science全文 PDF曾被认为属于哺乳动物的心肺相互作用也存在于原始肺鱼中
Cardiorespiratory interactions previously identified as mammalian are present in the primitive lungfish.
Science Advances · 2018
依据作者摘要概括。
Inspected PubMed abstract indexed by Europe PMC; archived full text does not imply full-text review.
主要发现 Key findings
肺鱼具有有髓鞘的心脏神经和与呼吸相联的心率变异，可提高每次呼吸的摄氧量。其神经控制特征类似四足动物，尽管循环系统尚未完全分隔。
Lungfish possess myelinated cardiac nerves and breath-linked heart-rate variability that increases oxygen uptake per breath. Neural control features resemble those described in tetrapods despite the fish's undivided circulation.
结论 Conclusions
常被视为哺乳动物独有的生理协调机制可能具有更古老的脊椎动物起源与功能。
Physiological coordination often regarded as uniquely mammalian may have ancient vertebrate origins and functions.