Novelli B, Otero Ferrer F, Socorro J A, Molina Domínguez L
Grupo de Investigación en Acuicultura (GIA), IU-ECOAQUA, Universidad de las Palmas de Gran Canaria (ULPGC), Ctra. Taliarte s/n, Telde, 35214, Las Palmas, Canary Islands, Spain.
Grupo en Biodiversidad y Conservación (BIOCON), IU-ECOAQUA, Universidad de las Palmas de Gran Canaria (ULPGC), Ctra. Taliarte s/n, Telde, 35214, Las Palmas, Canary Islands, Spain.
J Fish Biol. 2018 Jun;92(6):1975-1984. doi: 10.1111/jfb.13631. Epub 2018 May 15.
Fertilized and unfertilized eggs and embryos of the longsnout seahorse Hippocampus reidi were collected at different stages of development and provided the basis for a description of morphological development from fertilization until release from the paternal pouch. Images of fertilized eggs, as well as their rupture after a few minutes in seawater are reported for the first time. The yolk sac transitioned from ovoid to spherical shape and was reabsorbed progressively until release. The tail began rising from the surface of the deuteroplasm while embryos were in the egg envelope. Embryos lacked a primordial fin fold and developed some species characteristics, such as rays in the dorsal fin, before resorption of the yolk sac. At release, juvenile seahorses were in an advanced stage of development even if they lacked important adult characteristics, such as ring plates and coronet. The tail was not prehensile in juveniles at release; a small caudal fin was present, although this fin is lost in adults.
收集了长吻海马（Hippocampus reidi）受精和未受精的卵及胚胎在不同发育阶段的样本，为描述从受精到从雄鱼育儿袋中产出期间的形态发育提供了依据。首次报道了受精卵的图像以及它们在海水中几分钟后的破裂情况。卵黄囊从卵形转变为球形，并逐渐被吸收直至产出。当胚胎还在卵膜内时，尾巴开始从滋养质表面升起。胚胎没有原始鳍褶，在卵黄囊吸收之前就发育出了一些物种特征，如背鳍中的鳍条。产出时，幼海马即使缺乏一些重要的成体特征，如环板和冠状物，也处于发育的高级阶段。幼海马产出时尾巴不具有抓握能力；有一个小的尾鳍，不过这个鳍在成体中会消失。
