Title

The Life History of Phoxichilidium tubulariae (Pycnogonida: Phoxichilidiidae)

Document Type

Article

Publication Date

1-1-2005

Department

Biological Sciences

Abstract

Phoxichilidium tubulariae exhibits an encysted protonymphon development. Its fast developmental mode reduced the typical number of pycnogonid molts and developmental time from months as described for other pycnogonid species to fewer than 21 days. This developmental strategy exploited the seasonal abundance of Tubularia larynx. The larvae hatched, infested the hydroid, and developed inside the gastrovascular cavity. The larvae developed for several molts and then emerged, destroying the hydranth. Annual population dynamics of P. tubulariae were seasonal; density of adult animals was highest in mid-to-late summer with reproduction being greatest in July and August. The abundance of pycnogonids peaked as the hydroid population declined.

DOI

10.1656/1092-6194(2005)012[0077:TLHOPT]2.0.CO;2

First Page

77

Last Page

92

Publication Title

Northeastern Naturalist

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