Skip to main content

Free Content Systematics and Zoogeography of Thalamoporella Gothica and its Allied Species (Bryozoa, Cheilostomata)

Download Article:
 Download
(PDF 2587.8544921875 kb)
 

Abstract:

Thalamoporella gothica and its allied species are anascan cheilostome bryozoans which are distributed along subtidal, continental margins from the eastern Pacific, through the Atlantic and Indian Oceans, to the western Pacific. In the past, species within the T. gothica complex were thought to be only regional forms, and were treated as subspecies. However our examination of the group, and the consideration of newly collected material, has revealed at least five distinct species. While they are similar in general appearance, and share the same type of acutely shaped avicularium, they differ in a variety of other characters. The result is a new classification of this complex and a description of a new species from the Indian Ocean. The dispersal capabilities of Thalamoporella bryozoans are discussed and related to the distribution of the T. gothica complex. It is hypothesized that ancestral thalamoporellids were dispersed during the Tertiary through the Tethyan seaway and that they became isolated by subsequent tectonic events. The resulting speciation created the present complex which, while including the only two Thalamoporella taxa in the eastern Pacific, is not represented from the islands of the mid-Pacific.

Document Type: Research Article

Publication date: 1989-09-01

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more