Morphology and orientation of tube extensions on aggregations of the polychaete annelid Phragmatopoma californica

1994 ◽  
Vol 119 (4) ◽  
pp. 525-534 ◽  
Author(s):  
F. I. M. Thomas
Keyword(s):  
Phragmatopoma Californica

Mapping granular structure in the biological adhesive of Phragmatopoma californica using phase diverse coherent diffractive imaging

2011 ◽  
Vol 111 (8) ◽  
pp. 1184-1188 ◽  
Author(s):  
Corey T. Putkunz ◽  
Jesse N. Clark ◽  
David J. Vine ◽  
Garth J. Williams ◽  
Eugeniu Balaur ◽  
...  
Keyword(s):  
Granular Structure ◽  
Diffractive Imaging ◽  
Coherent Diffractive Imaging ◽  
Phragmatopoma Californica ◽  
Biological Adhesive

scholarly journals The Development and Structure of the Anterior Region of the Body in the Sabellariidae, with special reference to Phragmatopoma californica

1952 ◽  
Vol s3-93 (24) ◽  
pp. 435-452
Author(s):  
R. PHILLIPS DALES
Keyword(s):  
Special Reference ◽  
Larval Development ◽  
The Body ◽  
Anterior Region ◽  
Single Pair ◽  
Phragmatopoma Californica

Attention is drawn to the confusion which has been caused by the loose terminology of the anterior appendages in polychaetes, and more exact connotations are proposed. As the prostomium can be recognized as a comparable unit throughout the Polychaeta, a consideration of its constitution is deferred. In the present paper the development and constitution of the anterior region of the sabellariid worms are considered. The larval development of Phragmatopoma californica (representing the most highly advanced genus) is described, and the structure of the adult of this species is compared with that of species belonging to other genera. It is concluded that the opercular stalk arises mainly from the first segment; that the opercular paleae represent the notochaetae of the first two segments, and that the oral tentacles and the building organ are also developed from the first segment. The prostomium bears a single pair of tentacles.

Larval development of Polychaeta from the northern California coast. Fourteen additional species together with seasonality of planktic larvae over a 5-year period

2017 ◽  
Vol 97 (5) ◽  
pp. 1081-1133 ◽  
Author(s):  
James A. Blake
Keyword(s):  
Larval Development ◽  
Benthic Invertebrates ◽  
Seasonal Occurrence ◽  
Northern California ◽  
Additional Species ◽  
Summary Table ◽  
California Coast ◽  
Egg Masses ◽  
Phragmatopoma Californica ◽  
Tomales Bay

Larvae of ~100 species of benthic invertebrates were obtained from the vicinity of Tomales Bay and Dillon Beach, California, over a 6-year period (1971–1977). This study reports on larvae of 14 species in eight families of polychaetes:Micronereis nanaimoensis,Nereis vexillosa,Sthenelais fusca,Nephtys caecoides,Nephtys californiensis,Boccardia berkeleyorum,Polydora pygidialis,Polydora spongicola,Dipolydora cardalia,Mediomastus californiensis,Ampharete labrops,Phragmatopoma californica,Sabellaria cementariumandPectinaria californiensis. Some species were cultured from embryos obtained from laboratory fertilizations or field-collected egg masses or capsules. Larvae of other species were obtained from meroplankton and some of these were cultured through metamorphosis. A summary table is presented documenting seasonal occurrence of 60 polychaete taxa in the meroplankton.

Cement precursor proteins of the reef-building polychaete Phragmatopoma californica (Fewkes)

Biochemistry ◽  
1992 ◽  
Vol 31 (25) ◽  
pp. 5733-5738 ◽  
Author(s):  
J. Herbert Waite ◽  
Rebecca A. Jensen ◽  
Daniel E. Morse
Keyword(s):  
Precursor Proteins ◽  
Phragmatopoma Californica

Larval settlement and metamorphosis of two gregarious sabellariid polychaetes:Sabellaria alveolatacompared withPhragmatopoma californica

1988 ◽  
Vol 68 (1) ◽  
pp. 101-124 ◽  
Author(s):  
Joseph R. Pawlik
Keyword(s):  
Larval Settlement ◽  
Larval Metamorphosis ◽  
Specific Mechanism ◽  
The West ◽  
Cemented Sand ◽  
Larval Behaviour ◽  
Naturally Occurring ◽  
Phragmatopoma Californica ◽  
Settlement And Metamorphosis ◽  
High Concentrations

Two sabellariid polychaetes,Sabellaria alveolatafrom European waters andPhragmatopoma californicafrom the west coast of North America, are known from previous work to have larvae that settle and metamorphose preferentially on the cemented sand tubes of conspecific adults. The naturally occurring inducers of larval metamorphosis were recently isolated and identified forP. californica.In the present study, larval behaviour ofS. alveolataandP. californicawas compared in reciprocal laboratory settlement assays. For both species, metamorphosis occurred to a greater extent on conspecific tube sand than on control sand or on heterospecific tube sand. Extraction of the tube sand ofS. alveolatawith organic solvents diminished its capacity to induce metamorphosis pi conspecific larvae, but this capacity was not transferred to the extracts, as was the case forP. californica. The substance responsible for the enhanced metamorphosis ofS. alveolataon conspecific tube sand remains unknown. The free fatty acid (FFA) inducers of larval metamorphosis ofP. californicaeither inhibited, or had no effect on, metamorphosis ofS. alveolata. Both species responded abnormally upon exposure to unnaturally high concentrations of certain (particularly polyenoic) FFAs. Abnormal larval responses ofS. alveolata, however, did not incorporate behavioural components of normal metamorphosis, as were observed forP. californica. FFAs were isolated from the natural tube sand ofS. alveolataat less than one-tenth the concentration found in the natural tube sand ofP. californica. The differences between the two species provide further evidence that a very specific mechanism is responsible for the perception of FFAs by the larvae ofP. californica.

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