Species Description
The adult trunk length is ~2mm and the adult trunk width is ~1.5mm. This pycnogonid has 9-articled palps associated with reduced and rounded chelifores. The trunk is completely segmented, with well-distinct lateral processes, and ridges at the end of the first three segments (Faasse, 2013). The yellowish body features black-brownish spots over the legs.
Lifecycle Stages
Males bear the eggs on ovigerous legs until they hatch. The larva is protonymphon developmental type 1 according to Brenneis et al. (2017). It develops as endoparasite of gastrovascular cavities of hydroids (Russel & Hedgpeth, 1990).
Habitat Description
It is found in marine environments from 0 to 30 meters in depth. It may live freely or be associated as ecto-parasite to hydroids. Instances of A. hilgendorfi associated with sea stars (Nakamura & Fujita, 2004) or sea cucumbers (Ohshima, 1927) were also reported.
Principal source:
Compiler: Antoine Flandroit, University of Mons (UMONS)
Review:
Publication date: 2022-09-08
Recommended citation: Global Invasive Species Database (2024) Species profile: Ammothea hilgendorfi. Downloaded from http://www.iucngisd.org/gisd/species.php?sc=2051 on 05-05-2024.