van der Meij Sancia E T, Fransen Charles H J M, Pasman Leon R, Hoeksema Bert W
Naturalis Biodiversity Center Darwinweg 22333 CR Leiden The Netherlands; Oxford University Museum of Natural History Parks Road Oxford OX1 3PW UK.
Naturalis Biodiversity Center Darwinweg 2 2333 CR Leiden The Netherlands.
Ecol Evol. 2015 Nov 24;5(24):5770-80. doi: 10.1002/ece3.1808. eCollection 2015 Dec.
Coral-associated fauna is a relatively understudied topic. Hence, the nature of the relationship between an associated organism and its host is usually unknown. In the present study, the obligate associations between gall crabs (Decapoda: Cryptochiridae) and mushroom corals (Scleractinia: Fungiidae) are reviewed from a phylogenetic perspective. Based on field surveys, examination of museum material and a literature review, a total of 35 fungiid species have been found that act as hosts for four gall crab species. Fungiid-associated gall crabs appear to be more geographically widespread than previously known, with new records showing their occurrences from the Red Sea and western Indian Ocean all the way to the central Pacific Ocean. The obligate nature of the association between cryptochirids and their hosts makes them an ideal model taxon to test for possible cospeciation events. The congruence between their phylogenies was tested by using the program Jane 4.0, resulting in cospeciation and duplication events between the crabs and their host corals. The sharing of several closely related host coral species by the same gall crab species or genus may provide support to models indicating phylogenetic relationships within the Scleractinia.
与珊瑚相关的动物群是一个相对较少被研究的课题。因此，相关生物与其宿主之间关系的本质通常并不为人所知。在本研究中，从系统发育的角度对瘿蟹（十足目：隐螯蟹科）与石芝珊瑚（石珊瑚目：石芝珊瑚科）之间的专性共生关系进行了综述。基于实地调查、对博物馆标本的检查以及文献综述，共发现35种石芝珊瑚科物种作为4种瘿蟹的宿主。与石芝珊瑚相关的瘿蟹在地理分布上似乎比之前所知的更为广泛，新的记录显示它们的分布范围从红海和西印度洋一直到中太平洋。隐螯蟹与其宿主之间共生关系的专性性质使它们成为检验可能的共物种形成事件的理想模式分类单元。通过使用Jane 4.0程序对它们的系统发育进行一致性检验，结果表明蟹类与其宿主珊瑚之间存在共物种形成和重复事件。同一瘿蟹物种或属共享几种亲缘关系密切的宿主珊瑚物种，这可能为表明石珊瑚目内部系统发育关系的模型提供支持。
