Naupliar Development of an Ancorabolid, Paralaophontodes sp (Copepoda: Harpacticoida) Sheds Light on Harpacticoid Evolution

作者：Chullasorn Supawadee; Dahms Hans U; Iwasaki Nozomu; Kangtia Pawana; Ferrari Frank D; Jeon Hyoung Joo; Yang Wan Xi^*

来源：Zoological Studies, 2012, 51(3): 372-382.

• Naupliar characters
• Evolution
• Systematics
• Phylogeny
• Development
• Ancorabolidae

Supawadee Chullasorn, Hans-U. Dahms, Nozomu Iwasaki, Pawana Kangtia, Frank D. Ferrari, Hyoung Joo Jeon, and Wan-Xi Yang (2012) Naupliar development of an ancorabolid, Paralaophontodes sp. (Copepoda: Harpacticoida) sheds light on harpacticoid evolution. Zoological Studies 51(3): 372-382. Loss of the naupliar arthrite during the molt to naupliar stage (N) VI provides a developmental apomorphy for all Harpacticoida and sheds light on the evolution within this diverse copepod taxon. Naupliar development of Paralaophontodes sp. is unusual because the bud of swimming legs 1 and 2 does not bear setae at N VI and because the naupliar arthrite, present on the coxa of antenna 2 during the 1st 5 stages, fails to form during the molt to N VI; in addition, setal elements are lost from the basis and endopod of the mandible during this molt. This is only known from some harpacticoid copepods belonging to Tisbe; loss of setal elements on the mandible was also otherwise reported for species of the Tachidiidae and Harpacticidae. Five naupliar stages of the ancorabolid, Paralaophontodes sp., are described. A key to the identification of the stages is provided. Stages can be distinguished by the number of segments of the exopod of antenna 2, setation of the limbs including the bud of the caudal ramus, and the presence and setation of the bud of maxilla 1. This is the 1st description of nauplii of a species belonging to the oligoarthran family Ancorabolidae. http://zoolstud.sinica.edu.tw/Journals/51.3/372.pdf

• 出版日期2012-5
• 单位浙江大学