02653nam a2200325 a 4500
OSt
20240318132922.0
160620s19uu xx 00 eng d
CvSU Main Campus Library
eng
591.77
Oc5 2002
Oconer, Edna Perez
author
43417
Reproductive biology and gestation of the male seahorse, Hippocampus barbouri (Jordan and Richardson 1908) /
by Edna Perez Oconer.
Quezon City :
University of the Philippines,
2002.
xix, 131 pages :
illustrations ;
28 cm.
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rdamedia
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Thesis (Ph.D. Biology) University of the Philippines
Includes bibliographical references.
Seahorse, Hippocampus barbouri (Jordan-Richardson 1908) is one of the endangered species worldwide. Attempts to breed the fish in captivity are hampered by many unanswered questions regarding its general reproductive biology, especially its gestation. This study is the first investigation of the gross morphology of reproductive system, histology and ultrastructure of the brood pouch, and localization of sex steroids through immunohistochemistry and enzyme histochemistry.
Results showed that seahorse reproductive system does not differ from a typical male teleost except for the presence of brooding pouch in males and was evident starting at 8 cm length. The seahorse testis does not form spermatocyst and belongs to unrestricted spermatogonial type.
Onset of sex differentiation was observed at size length 4 to 6 cm. Ultrastructural study revealed the absence of structural connection between the embryo and the capsules formed by the pouch wall.
Immunohistochemistry, enzyme histochemistry and chemiluminescence studies showed synthesis of the steroids, estrogen and progesterone in the testes, brood pouch and interrenal gland and their possible involvement in gestation by their abundance during gestation. These findings will be valuable in the aquaculture and conservation of this species.
Submitted to the University Library
5/27/2016
T-5944
c1
Submitted to the University Library
5/27/2016
T-5976
c2
Marine animals
96
Seahorses
Pregnancy
9176
Seahorses
Reproduction
9176
Doctor of Philosophy in Biology
9179
http://library.cvsu.edu.ph/cgi-bin/koha/opac-retrieve-file.pl?id=864a8a1390aff51a49d693cdbb0756c2
Click here to view thesis abstract and table of contents
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MAN
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0
ddc
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3
NFIC
CVSUMAIN
CVSUMAIN
TS
2020-08-04
Submitted copy to the University Library
THESIS/SP
500
2002
591.77 Oc5 2002
00000040
2020-08-04 00:00:00
c1
http://library.cvsu.edu.ph/cgi-bin/koha/opac-retrieve-file.pl?id=864a8a1390aff51a49d693cdbb0756c2
2020-08-04
MAN
T-5944
0
0
ddc
0
3
NFIC
CVSUMAIN
CVSUMAIN
TS
2020-08-04
Submitted copy to the University Library
THESIS/SP
500
0
591.77 Oc5 2002
00000041
2021-08-06 00:00:00
c2
http://library.cvsu.edu.ph/cgi-bin/koha/opac-detail.pl?biblionumber=40
2020-08-04
MAN
T-5976
40
40