Spawning Behavior and Egg Development of Aplysia kurodai Inhabiting the Coastal Waters of Jeju Island, Korea
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This study was investigated spawning behavior, structure of egg masses and egg development in Aplysia kurodai inhabiting the coastal waters of Jeju Island, Korea. The mating and courtship behavior of A. kurodai occurred in the form of unilateral copulating with chain formation. In chain copulation, only the first animal acted as a female; the second and succeeding animals acted as males (sperm donors) to the animals in front and as females to the animals behind. The fertilized eggs were packaged in capsules that are embedded in jelly to form a cylindrical string called an egg masses. The number of capsule per cm of the egg masses was 55 to 60 capsules and each capsule within the egg masses held 15 to 25 eggs. After spawning, the egg masses were bright yellow or orange in color. This egg masses color not changed until embryos developed into trochophore stage. Thereafter, as embryo developed from trochophore stage to veliger stage the egg masses color became brownish. The fertilized eggs were spherical, with a diameter of approximately 80±1 μm at spawning. At 5 to 6 days after spawning, the embryo developed into trochophore stage and began to rotate within the egg capsule. In the trochophore stage, the precursor of the velum, called the prototroch or prevelum, developed. At 10 days after spawning, the prevelum is transformed into the velum, and the trochophore developed into veliger stage. Between 10 to 15 days after spawning, the veligers broke out of the egg capsule, and hatched as free-swimming larvae
Abstract
This study was investigated spawning behavior, structure of egg masses and egg development in Aplysia kurodai inhabiting the coastal waters of Jeju Island, Korea. The mating and courtship behavior of A. kurodai occurred in the form of unilateral copulating with chain formation. In chain copulation, only the first animal acted as a female; the second and succeeding animals acted as males (sperm donors) to the animals in front and as females to the animals behind. The fertilized eggs were packaged in capsules that are embedded in jelly to form a cylindrical string called an egg masses. The number of capsule per cm of the egg masses was 55 to 60 capsules and each capsule within the egg masses held 15 to 25 eggs. After spawning, the egg masses were bright yellow or orange in color. This egg masses color not changed until embryos developed into trochophore stage. Thereafter, as embryo developed from trochophore stage to veliger stage the egg masses color became brownish. The fertilized eggs were spherical, with a diameter of approximately 80±1 μm at spawning. At 5 to 6 days after spawning, the embryo developed into trochophore stage and began to rotate within the egg capsule. In the trochophore stage, the precursor of the velum, called the prototroch or prevelum, developed. At 10 days after spawning, the prevelum is transformed into the velum, and the trochophore developed into veliger stage. Between 10 to 15 days after spawning, the veligers broke out of the egg capsule, and hatched as free-swimming larvae
참고문헌 (30)
- Beeman RD, "The order Anaspidea", The Veliger, 3(Suppl), pp.87~102 (1968)
- Beeman RD, "The anatomy and functional morpho-logy of the reproductive system in the opisthobanch mollusk Phyllaplysia taylori Dall, 1900", The veliger, 13, pp.1~31 (1970)
- Benkendorff K, "The Other 99%. The Conservation and Bio-diversity of Invertebrates", pp.1~454 (1999), The Royal Zoological Society of New South Wales
- Berry AJ, "Reproductive system and spermatogenesis in the opithobranch gastropod Retusa obtusa (Montagu)", J Moll Stud, 58, pp.357~367 (1992)
- Blankenship JE, "Aspects of copulatory behavior and peptide control of egg laying in Aplysia", Fed Proc Fed Am Soc Exp Biol, 42, pp.96~100 (1983)
- Bridges CB, "development of Phyllaplysia taylori Dall, with a discussion of development in the Anaspidea (Opistobranchiata: Anaspidea)", Ophelia, 14, pp.161~184 (1975)
- Capo TS, "The effect of stocking density on growth rate and maturation time in laboratory-reared california sea hares", J Am Assoc Lab Anim Sci, 41, pp.18~23 (2002)
- Carefoot TH, "Aplysia: Its biology and ecology", Oceanogr Mar Biol Annu Rev, 25, pp.167~284 (1987)
- Eyster LS, "Reproduction and developmental variability in the opisthobranchs Tenellia pallida", Mar Biol, 51, pp.133~140 (1979)
- Eyster LS, "The embryonic capsules of nudibranch molluscs: literature review and new studies on albumen and capsule wall ultrastructure", Am Malacol Bull, 4, pp.205~216 (1986)
- Hadfield MG, "The Mollusca, vol 7", pp.209~350 (1984), Academic Press
- Kaang BK, "Activation of cAMP-reponsive genes by stimuli that produce long-term facilitation in Aplysia sensory neurons", Neuron, 10, pp.427~435 (1993)
- Kandel ER, "Behavioral Biology of Aplysia", pp.1~463 (1979), W.H. Freeman and Co
- Kempf SC, "Long-lived larvae of the gastropod Aplysia juliana: Do they disperse and metamorphose or just slowly fade away?", Mar Ecol Prog Ser, 6, pp.61~65 (1981)
- Klussmann-Kolb A, "Phylogeny of the Aphysiidae (Gastopoda, Opisthobranchia) with new aspects of the evolution of seahares", Zoologica Scripta, 33, pp.439~462 (2004)
- Kress A, "Structure of the female genital glands of the oviduct in the opithobranch mollusk, Runcina", Tissue Cell, 24, pp.95~110 (1992)
- Kriegstein AR, "Metamorphosis of Aplysia californica in laboratory culture", Proc Nat Acad Sci USA, 71, pp.3654~3658 (1974)
- Lalli CM, "Reproduction and develop-ment of Paedoclione doliiformis, and a comparison with Clione limacine (Opisthobranchia : Gymnosomata)", Mar Biol, 19, pp.13~22 (1973)
- 이치훈, "Gonadal Development and Reproductive Cycle of Sea Hare Aplysia kurodai in Jeju Coastal Waters", 발생과 생식, 15(3), pp.257~263 (2011), 한국발생생물학회
- Leonard JL, "Sex and the simultaneous hermaphrodite: Testing models of male-female conflict in a sea slug, Navanax inermis (Opisthobranch)", Anim Behav, 41, pp.255~266 (1991)
- Paige J, "The laboratory culture of two aplysiids, Aplysia brasiliana Rang, 1828, and Bursatella leachii plei (Rang, 1828) (Gastropoda: Opisthobranchia) in artificial seawater", The Veliger, 29, pp.64~69 (1986)
- Painter SD, "The anatomy and functional morphology of the large hermaphroditic duct of three species of Aplysia, with special reference of the atrial gland", J Morphol, 186, pp.167~194 (1985)
- Pawlings T, "Adaptations to physical stresses in the intertidal zone: the egg capsules of neogastropod molluscs", Amer Zool, 39, pp.230~243 (1999)
- Plaut I, "Ecology and ecophysiology of the sea hare, Aplysia oculifera (Adams and Reeve, 1850) in the Gulf of Eilat (Aqaba)", Ph. D, pp.1850
- Przeslawski R, "A review of the effects of environ-mental stress on embryonic development within intertidal gastropod egg masses", Moll Res, 24, pp.43~63 (2004)
- Przeslawski R, "The role of surface fouling the development of encapsulated gastropod embryos", J Moll stud, 71, pp.75~83 (2005)
- Rivest BR, "Copulation by hypodermic injection in the nudibranchs Palio zosterae and P. dubia (Gastropoda, Opisthobranchia)", Biol Bull, 167, pp.543~554 (1984)
- Strenth NE, "Reproductive patterns and seasonal occurrence of the sea hare Aplysia brasiliana Rang (Gastropoda, Opithobranchia) at South Padre Island, Texas", Am Malac Bull, 9, pp.85~88 (1991)
- Switzer-Dunlap M, "Observations on development, larval growth and metamorphosis of four species of aplysiidae (Gastropoda: Opisthobranchia) in laboratory culture", J Exp Mar Biol Ecol, 29, pp.245~261 (1977)
- Yusa Y, "The effects of body size on mating features in a field population of the hearmaphroditic sea hare Aplysia kurodai Baba, 1937 (Gastropoda: Opisthobranch)", J Moll Stud, 62, pp.381~386 (1996)