New record of viviparity for the dominant benthic invertebrate Exogone hebes (Polychaeta: Syllidae) from the Grand Banks of Newfoundland
ABSTRACT: The dominant infaunal benthic invertebrate on the Grand Banks of Newfoundland, Exogone hebes, is viviparous. This is the first recorded case of such development for this genus. Scanning electron microscopy documents the presence of fully differentiated juveniles within modified segments. O...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.598.2119 http://www.int-res.com/articles/meps/11/m011p239.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.598.2119 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.598.2119 2023-05-15T17:20:44+02:00 New record of viviparity for the dominant benthic invertebrate Exogone hebes (Polychaeta: Syllidae) from the Grand Banks of Newfoundland Patricia Pocklington Michael S. Hutcheson The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.598.2119 http://www.int-res.com/articles/meps/11/m011p239.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.598.2119 http://www.int-res.com/articles/meps/11/m011p239.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.int-res.com/articles/meps/11/m011p239.pdf text ftciteseerx 2016-01-08T13:49:58Z ABSTRACT: The dominant infaunal benthic invertebrate on the Grand Banks of Newfoundland, Exogone hebes, is viviparous. This is the first recorded case of such development for this genus. Scanning electron microscopy documents the presence of fully differentiated juveniles within modified segments. On separation from the female, each juvenile was 7 segments long, had a fully developed antenna, pharynx, 5 setigerous segments and a pygidium with anal cirri. The juveniles were extruded via the nephridial pores. Previously, external brooding of eggs and larvae has been described for this species. Incubating females were observed from March to November with a spawning maximum in spring (May). These new observations suggest a possible reason for the obvious ecological success of the species in one of the colder parts of its range. Text Newfoundland Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
ABSTRACT: The dominant infaunal benthic invertebrate on the Grand Banks of Newfoundland, Exogone hebes, is viviparous. This is the first recorded case of such development for this genus. Scanning electron microscopy documents the presence of fully differentiated juveniles within modified segments. On separation from the female, each juvenile was 7 segments long, had a fully developed antenna, pharynx, 5 setigerous segments and a pygidium with anal cirri. The juveniles were extruded via the nephridial pores. Previously, external brooding of eggs and larvae has been described for this species. Incubating females were observed from March to November with a spawning maximum in spring (May). These new observations suggest a possible reason for the obvious ecological success of the species in one of the colder parts of its range. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Patricia Pocklington Michael S. Hutcheson |
spellingShingle |
Patricia Pocklington Michael S. Hutcheson New record of viviparity for the dominant benthic invertebrate Exogone hebes (Polychaeta: Syllidae) from the Grand Banks of Newfoundland |
author_facet |
Patricia Pocklington Michael S. Hutcheson |
author_sort |
Patricia Pocklington |
title |
New record of viviparity for the dominant benthic invertebrate Exogone hebes (Polychaeta: Syllidae) from the Grand Banks of Newfoundland |
title_short |
New record of viviparity for the dominant benthic invertebrate Exogone hebes (Polychaeta: Syllidae) from the Grand Banks of Newfoundland |
title_full |
New record of viviparity for the dominant benthic invertebrate Exogone hebes (Polychaeta: Syllidae) from the Grand Banks of Newfoundland |
title_fullStr |
New record of viviparity for the dominant benthic invertebrate Exogone hebes (Polychaeta: Syllidae) from the Grand Banks of Newfoundland |
title_full_unstemmed |
New record of viviparity for the dominant benthic invertebrate Exogone hebes (Polychaeta: Syllidae) from the Grand Banks of Newfoundland |
title_sort |
new record of viviparity for the dominant benthic invertebrate exogone hebes (polychaeta: syllidae) from the grand banks of newfoundland |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.598.2119 http://www.int-res.com/articles/meps/11/m011p239.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
http://www.int-res.com/articles/meps/11/m011p239.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.598.2119 http://www.int-res.com/articles/meps/11/m011p239.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766101881295208448 |