Random sampling of shallow-water black corals colonies of Cirrhipathes anguina was carried out over a period of 13 months near the Great Reef of Toliara in southwest Madagascar. Small pieces of tissue were collected monthly from the base and apex of each colony. A total of 114 sets of upper and lower sections were observed. There were 37 males and 39 females for a sex ratio of 0.95, which was not significantly different from 1:1. On female and male colonies, 56% and 60% of the polyps, respectively, were showing developing gametes and no embryo nor larvae. Based on these samples, the species was determined to be gonochoric with broadcast spawning. The development of female and male gametes was divided into 3 stages, with stage 0 referring to unsexable colonies, and stage 2 referring to a high abundance of fully developed gametes inside the reproductive mesenteries. Gametes are released seasonally, with a major increase in the maturity and oocyte size when the temperature and the precipitation were at their highest in January. Intra-colonial differences were observed regarding maturing polyps. A few polyps living on the highest part of the colonies were showing gametes all year long. Their presence may be the result of unspawned gametes and residual mature polyps. All results are in line with previous hypotheses about the sexual reproduction of Cirrhipathes anguina based on the ultrastructure of the gametes or random observation events. An up to date summary of the current knowledge about black coral reproduction is also presented.

gu鱼深水黑珊瑚殖民地的随机抽样这项研究在马达加斯加西南部的托里拉大礁附近进行了13个月。每月从每个菌落的基部和顶端收集小块组织。总共观察到114组上下部分。性别比为0.95的男性为37位，女性为39位，与1：1相比无显着差异。在雌性和雄性菌落上，分别有56％和60％的息肉显示出正在发育的配子，没有胚胎或幼虫。根据这些样本，该物种被确定为带有广播产卵的淋病物种。雌性和雄性配子的发育分为三个阶段，第0阶段指的是无法繁殖的菌落，第2阶段指的是生殖肠系膜内充分发育的高配子。配子是季节性释放的，当温度和降水在1月达到最高时，成熟度和卵母细胞的大小会大大增加。观察到息肉成熟时的结肠内差异。居住在最高殖民地的一些息肉一年四季都在显示配子。它们的存在可能是未产生的配子和残留的成熟息肉的结果。所有结果均与先前有关性繁殖的假说相符。基于配子的超微结构或随机观察事件的腹泻性鳗鱼。还介绍了有关黑珊瑚繁殖的最新知识的最新摘要。