Gonadal Changes during the Annual Reproductive Cycle of the Ascidian Halocynthia aurantium (Pallas)
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The ascidian Halocynthia aurantium (sea peach), a marine invertebrate, belongs to the same genus of the phylum Chordata along with the ascidian Halocynthia roretzi (sea pineapple), which is one of the model animals in the field of developmental biology. The characteristics of development and reproduction of H. aurantium are not yet known in detail. In order to find out the spawning period of H. aurantium, we investigated development of the gonads during the annual reproductive cycle. Testis and ovary were both in the bisexual gonads (ovotestes) of H. aurantium, which is a hermaphrodite like H. roretzi. In H. aurantium, the right gonad was longer and slightly larger than the left gonad throughout the year. In each gonad, the number of the testis gonoducts was slightly higher than that of the ovary gonoducts. These features were similarly observed in H. roretzi. However, the number of the testis gonoducts and the ovary gonoducts in each gonad of H. aurantium was about half that of H. roretzi. The gonads of H. aurantium contracted during the winter and summer seasons. The gonads decreased to the smallest size around February, and then started to increase again in March. The gonads were most developed in September of the year. Therefore, it is estimated that the spawning of H. aurantium begins around this period.
Abstract
The ascidian Halocynthia aurantium (sea peach), a marine invertebrate, belongs to the same genus of the phylum Chordata along with the ascidian Halocynthia roretzi (sea pineapple), which is one of the model animals in the field of developmental biology. The characteristics of development and reproduction of H. aurantium are not yet known in detail. In order to find out the spawning period of H. aurantium, we investigated development of the gonads during the annual reproductive cycle. Testis and ovary were both in the bisexual gonads (ovotestes) of H. aurantium, which is a hermaphrodite like H. roretzi. In H. aurantium, the right gonad was longer and slightly larger than the left gonad throughout the year. In each gonad, the number of the testis gonoducts was slightly higher than that of the ovary gonoducts. These features were similarly observed in H. roretzi. However, the number of the testis gonoducts and the ovary gonoducts in each gonad of H. aurantium was about half that of H. roretzi. The gonads of H. aurantium contracted during the winter and summer seasons. The gonads decreased to the smallest size around February, and then started to increase again in March. The gonads were most developed in September of the year. Therefore, it is estimated that the spawning of H. aurantium begins around this period.
참고문헌 (18)
- Bates WR, "Environmental factors affecting reproduction and development in ascidians and other protochordates", Can J Zool, 83, pp.51~61 (2011)
- Young-Jin Choi, "Reproductive Cycle and Spawning Rhythm of the Ascidian, Halocynthia hilgendorfi ritteri", Animal Cells and Systems, 8(1), pp.33~40 (2004), 한국통합생물학회
- Inazawa T, "Basic fibroblast growth factor induction of neuronal ion channel expression in ascidian ectodermal blastomeres", J Physiol, 511, pp.347~359 (1998)
- Katz MJ, "Comparative anatomy of the tunicate tadpole, Ciona intestinalis", Biol Bull, 164, pp.1~27 (1983)
- Kim BS, "Gametogenesis, gonadal development and maturation of the sea squirt, Halocynthia roretzi", Dev Reprod, 5, pp.137~144 (2001)
- Kim HJ, "The kinetoplastid parasite Azumiobodo hoyamushi, the causative agent of soft tunic syndrome of the sea squirt Halocynthia roretzi, resides in the East Sea of Korea", J Invertebr Pathol, 116, pp.36~42 (2014)
- 김길중, "붉은멍게(Halocynthia aurantium)의 배발생과 변태", 한국해양생명과학회지, 5(2), pp.58~63 (2020), (사)한국해양생명과학회
- Kim JO, "Complete mitochondrial genome of sea peach Halocynthia aurantium(Stolidobranchia : Pyuridae)from Korea", Mitochondrial DNA B Resour, 6, pp.1007~1008 (2021)
- Kowalevsky AO, "Entwicklungsgeschichte der Einfachen Ascidien", pp.1~19 (1866), Kaiserliche Akademie der Wissenschaften
- Kumagai A, "Soft tunic syndrome in the edible ascidian Halocynthia roretzi is caused by a kinetoplastid protist", Dis Aquat Organ, 95, pp.153~161 (2011)
- Lambert G, "Wild and cultured edible tunicates : A review", Manag Biol Invasion, 7, pp.59~66 (2016)
- Lemaire P, "Unfolding a chordate developmental program, one cell at a time: Invariant cell lineages, short-range inductions and evolutionary plasticity in ascidians", Dev Biol, 332, pp.48~60 (2009)
- Nguyen TTT, "Aquaculture of sea-pineapple, Halocynthia roretzi in Japan", Aquac Asia Mag, 12, pp.21~23 (2007)
- Nishida H, "Specification of embryonic axis and mosaic development in ascidians", Dev Dyn, 233, pp.1177~1193 (2005)
- Rho BJ, "A systematic study on the ascidians in Korea", Korean J Syst Zool, 7, pp.195~220 (1991)
- Shenkar N, "Global diversity of Ascidiacea", PLOS ONE, 6, pp.e20657~ (2011)
- Shin YK, "Quantitative assessment of Azumiobodo hoyamushi distribution in the tunic of soft tunic syndrome-affected ascidian Halocynthia roretzi using real-time polymerase chain reaction", Parasit Vectors, 7, pp.539~ (2014)
- Van Name WG, "The North and South American Ascidians", pp.362~ (1945), American Museum of Natural History