Here are a few references relevant to Joy's question:
Hatcher, A. 1991. Effect of temperature on carbon, nitrogen and phosphorus
turnover by the solitary ascidian Herdmania momus (Savigny). J. Exp. Mar.
Biol. Ecol. 152: 15-31.
Petersen, J. K., Mayer, S. and Knudsen, M. A. 1999. Beat frequency of cilia
in the branchial basket of the ascidian Ciona intestinalis in relation to
temperature and algal cell concentration. Mar. Biol. 133: 185-192.
Marin, M. G., Bressan, M., Beghi, L. and Brunetti, R. 1987. Thermo-haline
tolerance of Ciona intestinalis (L., 1767) at different developmental
stages. Cah. Biol. Mar. 28: 47-57.
Brunetti, R., Beghi, L., Marin, M. G. and Bressan, M. 1985. Survival and
growth of Molgula socialis Alder, 1863 at different temperature-salinity
combinations. Vie Mil. 35: 43-47.
Sanina, N. M. and Kostetsky, E. Y. 2001. Seasonal changes in thermotropic
behavior of phosphatidylcholine and phosphatidylethanolamine in different
organs of the ascidian Halocynthia aurantium. Comp.Biochem. Physiol. B:
128: 295-305.
Sanina, N. and Kostetsky, E. 2002. Thermotropic behavior of major
phospholipids from marine invertebrates: changes with warm-acclimation and
seasonal acclimatization. Comp. Biochem. Physiol. B Biochem. Mol. Biol.
133: 143.
Barth, L. G. and Barth, L. J. 19. A study of regression and budding in
Perophora viridis. J. Morph. 118: 451-460.
Berrill, N. J. 1929. Digestion in ascidians and the influence of
temperature. British J. Exp. Biol. 6: 275-292.
Azumi, K., Kuribayashi, F., Kanegasaki, S. and Yokosawa, H. 2002. Zymosan
induces production of superoxide anions by hemocytes of the solitary
ascidian Halocynthia roretzi. Comp. Biochem. Physiol. C 133: 567-574.
Touratier, F., Carlotti, F. and Gorsky, G. 2003. Individual growth model
for the appendicularian Oikopleura dioica. Mar. Ecol. Prog. Ser. 248: 141-163.
Uye, S. and Ichino, S. 1995. Seasonal variations in abundance, size
composition, biomass and production rate of Oikopleura dioica (Fol)
(Tunicata: Appendicularia) in a temperate eutrophic inlet. J. Exp. Mar.
Biol. Ecol. 189: 1-11.
Ribes, M., Coma, R. and Gili, J. M. 1998. Seasonal variation of in situ
feeding rates by the temperate ascidian Halocynthia papillosa. Mar. Ecol.
Prog. Ser. 175: 201-213.
Gibson, D. M. and Paffenhofer, G. A. 2000. Feeding and growth rates of the
doliolid, Dolioletta gegenbauri Uljanin (Tunicata, Thaliacea). J. Plankton
Res. 22: 1485-1500.
Touratier, F., Carlotti, F. and Gorsky, G. 2003. Individual growth model
for the appendicularian Oikopleura dioica. Mar. Ecol. Prog. Ser. 248: 141-163.
López-Urrutia, A., Acuña, J. L., Irigoien, X. and Harris, R. 2003. Food
limitation and growth in temperate epipelagic appendicularians (Tunicata).
Mar. Ecol. Prog. Ser. 252: 143-157.
Bingham, B. L. 1997. Light cycles and gametogenesis in three temperate
ascidian species. Invert. Biol. 116: 61-70.
Egan, E. A. 1984. The seasonal reproductive cycle of the nemertean
Gononemertes australiensis Gibson in relation to that of its ascidian host,
Pyura pachydermatina (Herdman). J. Exp. Mar. Biol. Ecol. 76: 225-246.
Millar, R. H. 1974. A note on the breeding season of three ascidians on
coral reefs at Galeta in the Caribbean Sea. Mar. Biol. 28: 127-129.
Nontratip, A. and Yamanaka, H. 1994. Seasonal variations of activities of
glycogen-degrading enzymes in ascidian muscle. Fisheries Sci. 60: 77-82.
Ribes, M., Coma, R. and Gili, J. M. 1998. Seasonal variation of in situ
feeding rates by the temperate ascidian Halocynthia papillosa. Mar. Ecol.
Prog. Ser. 175: 201-213.
Sims, L. L. 1984. Osmoregulatory capabilities of three macrosympatric
stolidobranch ascidians, Styela clava Herdman, S. plicata (Lesueur), and S.
montereyensis (Dall). J. Exp. Mar. Biol. Ecol. 82: 117-129.
Urban, J. L., McKenzie, C. H. and Deibel, D. 1992. Seasonal differences in
the content of Oikopleura vanhoeffeni and Calanus finmarchicus faecal
pellets: illustrations of zooplankton food web shifts in coastal
Newfoundland waters. Mar. Ecol. Prog. Ser. 84: 255-264.
Urban, J. L., Deibel, D. and Schwinghamer, P. 1993. Seasonal variations in
the densities of fecal pellets produced by Oikopleura vanhoeffeni (C.
Larvacea) and Calanus finmarchicus (C. Copepoda). Mar. Biol. 117: 607-613.
There are actually many studies on this topic but Joy is correct that it is
time for another review.
Best wishes, Gretchen Lambert
At 12:32 PM 9/30/2003 +0100, you wrote:
>Hello there,
>
>I am a beginning PhD student in Newfoundland. I am looking for information
>on the seasonality of ascidian physiology. There seems to be a paucity of
>data on this. I know from a few published studuies that growth rates are
>very low in winter months. I am wondering if there are studies that I have
>missed on their metabolism during warm and cold seasons and to what extent
>it depends on the amount of live and detrital food in their diet. The only
>comprehensive study seems to be Goodbody (1974). Maybe it's time for
>another review.
>
>Joy Stacey
Gretchen Lambert
12001 11th Ave. NW
Seattle, WA 98177
tel. 206-365-3734
[log in to unmask]
http://nsm.fullerton.edu/~lamberts/ascidian/
"Ascidians are back in the limelight, with a good chance of staying there."
-- O. Pourquié, Nature 8 Feb. 2001.
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