Study on reproduction of captive marine mammals

The reproductive endocrinological characteristics of beluga, killer whale, spotted seal and bottlenose dolphin were evaluated and used in conjunction with applied reproductive research to enhance captive breeding programs. Results from 8 y of biweekly serum progesterone determination in a female bel...

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Bibliographic Details
Published in:Journal of Reproduction and Development 2010, Vol.56(1), pp.1-8
Main Author: Katsumata, E., Kamogawa Sea World, Chiba (Japan)
Format: Article
Language:English
Subjects:
Animals
AQUATIC MAMMALS
ARTIFICIAL INSEMINATION
Beluga Whale - physiology
BODY TEMPERATURE
Body Temperature - physiology
Bottle-Nosed Dolphin - physiology
Caniformia - physiology
CICLO ESTRAL
CIENCIAS MARINAS
CYCLE OESTRAL
Estrous Cycle - physiology
Estrous synchronization
Estrus Synchronization
Female
http://www.fao.org/aos/agrovoc#c_4613
http://www.fao.org/aos/agrovoc#c_5322
http://www.fao.org/aos/agrovoc#c_556
http://www.fao.org/aos/agrovoc#c_6218
http://www.fao.org/aos/agrovoc#c_638
http://www.fao.org/aos/agrovoc#c_983
INSEMINACION ARTIFICIAL
INSEMINATION ARTIFICIELLE
Insemination, Artificial
MAMIFEROS ACUATICOS
MAMMIFERE AQUATIQUE
Marine mammals
MARINE SCIENCES
OESTROUS CYCLE
Ovulation Induction
Pregnancy
Progestational hormone
PROGESTERONA
PROGESTERONE
Progesterone - blood
Rectum - physiology
Reproduction - physiology
SCIENCES DE LA MER
Sexual Maturation - physiology
TEMPERATURA DEL CUERPO
Temperature
TEMPERATURE CORPORELLE
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Summary:The reproductive endocrinological characteristics of beluga, killer whale, spotted seal and bottlenose dolphin were evaluated and used in conjunction with applied reproductive research to enhance captive breeding programs. Results from 8 y of biweekly serum progesterone determination in a female beluga indicated that sexual maturity occured at approximately age 13, two to seven estrous cycles, lasting 37+-3.9 days, per yr began in April-May every year. Rectal temperature was positively correlated with serum progesterone levels and negatively associated with behavioral estrus. In five cases of pregnancy of two female killer whale, positive relationship was found between serum progesterone concentration and temperature during the first period of 18 month-gestation. In the normal parturitions (n=4), rectal temperature decreased 0.8 C lower than average rectal temperature during pregnancy. Sexual maturity of female killer whales occurred at age nine. Yearly contraception in the mono-estrus captive spotted seals (n=10) using a single dose of the progestagen (proligestonesup(TM); 5 or 10 mg/kg s.c.) was achieved in 94% (33/35) of the attempts over 5 yr when the hormone was administered two months prior to the breeding season. Artificial insemination trials (n=4) were conducted in female bottlenose dolphin (n=3) using fresh and frozen-thawed semen. Estrus synchronization using regumate (27 days) resulted in ovulation occurring 19 to 24 days post withdrawal. Conception was confirmed in 75% of the attempts, with two females successfully delivering calves.
ISSN:0916-8818
1348-4400
DOI:10.1262/jrd.09-212E