无尾动物卵巢色素沉着的新认识

IF 1.1 4区 生物学 Q3 ZOOLOGY Herpetological Journal Pub Date : 2020-10-01 DOI:10.33256/HJ30.4.222226
J. Goldberg, C. Oliveira, L. Franco‐Belussi
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引用次数: 1

摘要

两栖动物除了皮肤以外,其他器官也有色素细胞。它们的功能包括自由基中和,早期先天反应,以及与环境温度和紫外线的关系。在性腺中,含有色素的细胞似乎主要局限于睾丸,并与精子的产生有关。然而,我们首次报道了minuta假丝的卵巢黑色素化及其在幼虫期和变质期后的个体发生变化。卵巢表面含有黑色素的细胞最初出现在早期的预变质阶段,而在卵巢皮层则出现得较晚。在连续的阶段,含黑色素细胞在卵母细胞中更明显,但没有明确的模式,随机分布在生发上皮或间质中。尽管它们的功能尚不清楚,但与性成熟快速获得的关系必须进一步探索。
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New insights about ovarian pigmentation in Anura
Amphibians have pigmented cells in organs beyond just skin. Their functions involve free radical neutralisation, early innate response, and a relationship with environmental temperature and UV light. In gonads, pigment containing-cells seem to be restricted mainly to the testes and related to sperm production. However, we report for the first time ovarian melanisation in Pseudis minuta and its ontogenetic changes in larval and postmetamorphic stages. Melanin containing-cells on the ovarian surface initially appear at early premetamorphic stages whereas in the cortex they occur later. In consecutive stages, melanin containing-cells were more evident among oocytes but without a clear pattern, being located randomly within the germinal epithelium or in the stroma. Although their function is unclear, a relationship with the fast acquisition of sexual maturity must be further explored.
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来源期刊
Herpetological Journal
Herpetological Journal 生物-动物学
CiteScore
2.40
自引率
10.00%
发文量
25
审稿时长
>12 weeks
期刊介绍: The Herpetological Journal is the Society''s prestigious quarterly scientific journal.
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