Ehemann N R, Pérez-Palafox X A, Pabón-Aldana K, Mejía-Falla P A, Navia A F, Cruz-Escalona V H
Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, 23096, La Paz, BCS, Mexico.
Fundación colombiana para la investigación y conservación de tiburones y rayas, SQUALUS, Calle 10ª # 72-35, Apto 310E, Cali, Colombia.
J Fish Biol. 2017 Oct;91(4):1228-1235. doi: 10.1111/jfb.13398. Epub 2017 Aug 14.
This study found that the reef stingray Urobatis concentricus presents a matrotrophic aplacental viviparous reproduction with yolk sac and trophonemata formation. Growth of ovarian follicles occurs asynchronously and continuously with fecundity of three embryos per female. A maximum size of 58·4 cm total length and 37·6 cm disc width was recorded, corresponding to a mature female of 3 or 4 years of age.
本研究发现，礁魟Urobatis concentricus呈现出一种有卵黄囊和滋养丝形成的母营养非胎盘胎生繁殖方式。卵巢卵泡的生长是异步且持续的，每只雌性的繁殖力为三个胚胎。记录到的最大全长为58.4厘米，盘宽为37.6厘米，对应的是3或4岁的成熟雌性。
