Ellobiopsidae of Alaskan coastal waters
ABSTRACT: Four species of ellobiopsids were taken in Alaskan coastal waters. Thalassomyces fagei ( a synonym of Amallocystis fagei) was found to parasitize specimens of the euphausid Thysanoessa raschii taken in Kachemak Bay, Alaska. The development of T. fagei external to the host from a small knob...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
1966
|
| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.550.3862 http://scholarspace.manoa.hawaii.edu/bitstream/handle/10125/7721/v20n1-70-78.pdf;jsessionid=D7812719899A8941C63B218B9583F582?sequence=1 |
| Summary: | ABSTRACT: Four species of ellobiopsids were taken in Alaskan coastal waters. Thalassomyces fagei ( a synonym of Amallocystis fagei) was found to parasitize specimens of the euphausid Thysanoessa raschii taken in Kachemak Bay, Alaska. The development of T. fagei external to the host from a small knob to the mature form was found to occur by repeated dichotomous branching. T. fagei occurred dur-ing April and May hut was not observed at other times of the year. Thalassomyces sp. was found to be parasitic on specimens of the mysid Acanthomysis pseudoma-cropsis taken in Kachemak Bay, Alaska. The range of Thalassomyces capillosus, para-sitic on the caridean Pasiphaea pacifica, is extended from Coos Bay, Oregon, to Orca Bay, Prince William Sound, Alaska. Ellobiopsis chattoni was found to parasitize the copepod Metridia longa, a new host of this ellobiopsid. Specimens of E. chattoni were taken in the waters of southeastern Alaska, extending the range of E. chattoni from the Atlantic to the north Pacific. THE SYSTEMATIC POSITION of the family Ello-biopsidae Coutiere and the genera therein has been an enigma since their original description. According to Margaret]epps (1937), T. Scott in 1897 first described the ellobiopsid now known as Ellobiopsis chattoni as a "? infusorian parasite " of the copepod Calanus finmarchicu s. She state's also that in 1910 Caullery associated the ellobiopsids with the Dinoflagellata. Various authors have continued to consider these or-ganisms to be closely related to the dinoflagel-lates.]epps points out that a relation with the fungi is possible. Boschma ( 1949, 1956, and 1959) reviewed the entire group and preferred to consider them as "Protista of uncertain posi-tion. " He noted that the ellobiopsids have af-finities with the following groups: parasitic peridinians, flagellates, and possibly fungi of the family Saprolegniaceae, and that the group is made up of a number of heterogeneous elements. The family Ellobiopsidae is a rather hetero-geneous group consisting of several genera. ... |
|---|