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Induced Spawning Behavior and Morphological Development of the Eggs and Larvae of the Variable Sabretooth Blenny, Petroscirtes variabilis (Pisces: Blenniidae)  

Park, Jae Min (Department of Aqualife Science, Chonnam National University)
Han, Kyeong Ho (Department of Aqualife Science, Chonnam National University)
Kim, Na Ri (Department of Aqualife Science, Chonnam National University)
Cho, Jae Kwon (Southwest Sea Fisheries Research Institute, NFRDI)
Publication Information
Korean Journal of Ichthyology / v.26, no.4, 2014 , pp. 267-273 More about this Journal
Abstract
This research has carried out to make a data base of taxonomic research. That Data base explains about spawning behavior, egg development, and morphologic development of variable sabretooth blenny. Fertilized egg was demersal egg which is white and opaque. The number of oil glouble were 10~11, and the size of egg was 0.90~1.43 mm (average rate $1.11{\pm}0.23mm$, n=10). Breeding water temperature was $25.5{\sim}28.5^{\circ}C$ (average rate $27.0^{\circ}C$), and salinity was 32.5~33.5‰ (average rate 33.0‰). After 24 hours from 2 cells, the process of egg development was reached to Blastula stage. Moreover, after 330 hours from 2 cells, nostrils and eyes were formed. Egg membrane was pierced by the head, and the hatch began. After the hatch, postlarvae had 2.59~3.02 mm (average rate $2.81{\pm}0.25mm$, n=5) of whole length, and the mouth and anus were opened. Yolk sac and oil glouble were absorbed. After three days from hatch, prelarvae were 3.02~3.07mm(average rate $3.04{\pm}0.04mm$) of whole length, and caudal fin was grown with round shape. After 13 days from hatch, prelarvae had 3.04~3.20 mm (average rate $3.12{\pm}0.11mm$) of whole length, and they could eat food with upper jaw and bottom jaw.
Keywords
Egg development; larvae; Petroscirtes variabilis; spawning behavior;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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