Effects of Temperature, Salanity on Asexual Reproduction and Number Ephyra of Rhizostome Jellyfish Catostylus townsendi (Mayer, 1915)
Article Sidebar
Main Article Content
Abstract
The experiments were conducted to study effects of temperature (26, 28 and 30 ºc), salinity (20, 25 and 30 ppt.) on asexual reproduction, some strobili and some ephyra of Rhizostome Jellyfish Catostylus townsendi (Mayer, 1915) were chosen from the polyp stage to the ephyra stage. The study found that the reproduced asexually Podocyst. There was the effect of the temperature and salinity on asexual reproduction of the C. townsendi which showed the highest number of podocyst (mean±SE) occurred at 26 ºc and 25 ppt. (2.00±0.57 podocyst). That is, the effect of temperature and salinity showed the highest number at 26 ºc (1.33±0.37 podocyst) and the highest number of salinity occurred at 25 ppt. (0.88±0.35 podocyst). The temperature of strobila were found at 30 ºc and 20,25 ppt. (4.33±0.33 strobila). The effect of temperature and salinity on the formation of strobila, the highest number occurred at 30 ºc (3.55±0.44 strobila) and the highest number of salinity showed at 20 ppt. (3.55±0.41 strobila) And ephyra, the highest number of ephyra occurred at 30 ºc and 20 ppt. (14.66±1.33 ephyra). The Effect of temperature and salinity on the number of ephyra, the highest number of ephyra were found at 30 ºc (10.66±1.57 ephyra) and the highest number of salinity occurred at 20 ppt. (10.77±1.50 ephyra)
Article Details
บทความที่ได้รับการตีพิมพ์เป็นลิขสิทธิ์ของ วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยอุบลราชธานี
ข้อความที่ปรากฏในบทความแต่ละเรื่องในวารสารวิชาการเล่มนี้เป็นความคิดเห็นส่วนตัวของผู้เขียนแต่ละท่านไม่เกี่ยวข้องกับมหาวิทยาลัยอุบลราชธานี และคณาจารย์ท่านอื่นๆในมหาวิทยาลัยฯ แต่อย่างใด ความรับผิดชอบองค์ประกอบทั้งหมดของบทความแต่ละเรื่องเป็นของผู้เขียนแต่ละท่าน หากมีความผิดพลาดใดๆ ผู้เขียนแต่ละท่านจะรับผิดชอบบทความของตนเองแต่ผู้เดียว
References
Journal. 616(1): 247–258.
[2] Straehler-Pohl, I., Widmer, C.L. and Morandini, A.C. 2011. Characterizations of juvenile stages of some semaeostome Scyphozoa (Cnidaria), with recognition of a
new family (Phacellophoridae).Zootaxa Journal. 2741: 1–37.
[3] Arai, M.N. 1997. A functional biology of scyphozoa. (p.1-316). New York: Chapman & Hall.
[4] Delap, M. J., 1905. Notes on the rearing, in an aquarium, of Cyanea lamarcki, Pe´ron & Lesueur. In: Report of Sea and Fisheries Ireland (1902–3), Scientific
Investigations 20–22, pl. I–II.
[5] Dong, J., Sun, M., Wang, B. and Liu, H. 2008. Comparison of life cycles and morphology of Cyanea nozakii and other scyphozoans. Plankton Benthos Research
Journal. 3: 118-124.
[6] Schiariti, A., Morandini, A. C., Jarms, G. and et al. 2014. Asexual reproduction strategies and blooming potential in Scyphozoa. Marine Ecology Progress Series
Journal. 510: 241-253.
[7] Widmer, C.L. 2008. Life Cycle of Chrysaora fuscescens (Cnidaria: Scyphozoa) and a Key to Sympatric Ephyrae. Pacific Science Journal. 62(1): 71-82.
[8] Choosri, S., Luangoon, N., Charoendee, W. and et al. 2016. Life cycle of the jellyfish Catostylus sp. http://dspace.lib.buu.ac.th
/xmlui/handle/1234567890/3658.Accessed 1 January 2021. (in Thai)
[9] AZA Aquatic Invertebrate TAG.2013. Jellyfish care manual. Association of Zoos and Aquariums, Silver Spring, MD.
[10] Tronolone, V. B., Morandini, A.E. and Migotto, A.E. 2002. On the occurrence of scyphozoan ephyrae(Cnidaria,Scyphozoa, Semaeostomeae and Rhizostomeae)
In: The southeastern Brazilian coast. Biota Neotropica. (pp.1-18).
[11] Willcox, S., Moltschaniwskyj, N.A. and Crawford, C. 2007. Asexual reproduction in scyphistomae of Aurelia sp.: Effects of temperature and salinity in an
experimental study. Experimental Marine Biology and Ecology Journal. 353(1): 107-114.
[12] Purcell, J. E.,Atienza, D., Fuentes, and et al. 2012. Temperature effects on asexual reproduction rates of scyphozoan species from the northwest Mediterranean
Sea. Hydrobiologia Journal. 690(1): 169–180.
[13] Calder, D.R. 1982. Life history of the cannonball jellyfish, Stomolophus meleagris L. Agassiz, 1860 (Scyphozoa, Rhizostomida). Biological Bulletin (Woods Hole)
Journal 162: 149-162.
[14] Silverstone, M., Tosteson, T.R. and Cutress, C.E. 1997. The effect of iodide and various iodocompounds on initiation of strobilation in Aurelia, Gen. Camp.
Endocrinol Journal. 32: 108–113.
[15] Keen, S. and Gong, A. 1989. Genotype and feeding frequency affect clone formation in a marine cnidarian (Aurelia aurita, Lamark 1816). Marine Ecology
Journal. 3: 735–745.
[16] Holst, S., and Jarm, G. 2010. Effects of low salinity on settlement and strobilation of scyphozoa (Cnidaria): Is the lion’s mane Cyanea capillata (L.) able to
reproduce in the brackish Baltic Sea? Hydrobiologia Journal. 645(1): 53-68.
[17] Pitt, K.A. 2000. Life history and settlement preferences of the edible jellyfish Catostylus mosaicus (Scyphozoa: Rhizostomeae). Marine Biology Journal. 136(2):
269-279.
[18] Jarms, G. 1990. Neubeschreibung dreier Arten der Gattung Nausithoe (Coronata, Scyphozoa) sowie Wiederbeschreibung der Art Nausithoe marginata Ko¨
lliker, 1853. Mitteilungendes Hamburger Zoologischen Museums und Instituts 87: 7–39.
[19] Purcell, J.E., White, J.R., Nemazie, D.A. and Wright, D.A. 1999. Temperature, salinity and food effects on asexual reproduction and abundance of the scyphozoan
Chrysaora quinquecirrha. Marine Ecology Progress Series Journal. 180: 187-196.
[20] Purcell, J. E. 2007. Environmental effects on asexual reproduction rates of the Scyphozoan, Aurelia labiata. Marine Ecology Progress Series Journal. 348: 183–
196.
[21] Purcell, J.E. and Decker, M.B. 2005. Effects of climate on relative predation by ctenophores and scyphomedusae on copepods in Chesapeake Bay during 1987–
2000. Limnology and Oceanography Journal. 50: 376–387.
[22] Phuangsanthia, W. (2017). Life cycle and effect of temperature, salinity on asexual reproduction of a Rhizostome Jellyfish scyphistoma, Acromitus flagellatus
(Maas, 1903) under laboratory condition. M.SC.Thesisi, Burapha University. (in Thai)
[23] Office of Science and Technology Royal Thai Embassy. 2019. Science and Technology Royal Thai Embassy. https://www.thai
science.eu/uploads/journal_20190827152603-pdf.pdf. Accessed 1 January 2021. (in Thai)