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Accession number;03A0208840
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| Title;Artificial Insemination of the Cloudy Catshark. |
| Author;
MASUDA MOTOYASU
(Hekinankaiheisuizokukan)
IZAWA YOSHIYUKI
(Hekinankaiheisuizokukan)
KAMETSUTA SHIGENORI
(Hekinankaiheisuizokukan)
IKUTA HARUYUKI
(Hekinankaiheisuizokukan)
ISOGAI TOORU
(Hekinankaiheisuizokukan)
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Journal Title;Journal of Japanese Association of Zoological Gardens and Aquariums
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Journal Code:S0251B
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ISSN:0386-7498
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VOL.44;NO.2;PAGE.39-43(2003)
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| Figure&Table&Reference;TBL.1, REF.13 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The artificial insemination of a catshark (Scyliorhinus torazame) on November 25th, 1995 was the first recorded trial of this procedure for elasmobranchs. 1ml of semen was collected from a male catshark by squeezing its abdomen. The semen was diluted with 14ml of sea water prior to artficial insemination. 15ml of diluted semen was injected by tube and cylinder into the females' cloaca. The first egg spawned after artifical insemination was found on December 3rd, seven days after the operation. This egg was not fertilized. A total of 26 eggs were raised in 1996, with a 76.9% of fertilization rate and 35.8% of the eggs hatched. The hatch rate slowly declined over time and fertilized eggs were collected from January 16th to October 11th, 1996. This experimental artificial insemination of a catshark advances the knowledge of elasmobranch physiology and embryology such as female capability of storing sperm in the nidamental gland. (author abst.) |
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