Publication: Distribution of abalone egg-laying hormone-like peptide in the central nervous system and reproductive tract of the male mud crab, Scylla olivacea
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Issued Date
2019-02-01
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ISSN
16180372
00651281
00651281
Other identifier(s)
2-s2.0-85057091905
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Mahidol University
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SCOPUS
Bibliographic Citation
Acta Histochemica. Vol.121, No.2 (2019), 143-150
Suggested Citation
Kanjana Khornchatri, Jirawat Saetan, Tipsuda Thongbuakaew, Thanyaporn Senarai, Thanapong Kruangkum, Napamanee Kornthong, Yotsawan Tinikul, Prasert Sobhon Distribution of abalone egg-laying hormone-like peptide in the central nervous system and reproductive tract of the male mud crab, Scylla olivacea. Acta Histochemica. Vol.121, No.2 (2019), 143-150. doi:10.1016/j.acthis.2018.11.004 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/50273
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Title
Distribution of abalone egg-laying hormone-like peptide in the central nervous system and reproductive tract of the male mud crab, Scylla olivacea
Abstract
© 2018 The mud crab, Scylla olivacea, is a high value economic marine animal in Thailand. However, collection of these crabs from natural habitat for local consumption and export has caused rapid population decline. Hence, aquaculture of this species is required and to this measure understanding of endocrine control of their reproduction must be understood. Egg laying hormone (ELH) is a neuropeptide synthesized by the bag cells (neurons) in the abdominal ganglia of Aplysia gastropods. It plays a critical role in controlling egg production and laying in gastropods, and its possible homolog (ELH-like peptide) was reported in the neural and ovarian tissues of prawns and recently in female reproductive tract of the blue swimming crab, Portunus pelagicus. In this study, we have studied the histology of the male reproductive tract in Scylla olivacea which are comprised of anterior testis, posterior testis, early proximal spermatic duct (ePSD), proximal spermatic duct (PSD), middle spermatic duct (MSD) and distal spermatic duct (DSD), by immunohistochemistry, detected an abalone ELH- immunoreactivity (aELH-ir) in epithelium of ducts in posterior testis and epithelium of all parts of spermatic duct. Furthermore, we could detect aELH-ir in neurons of cluster 9, 11, olfactory neuropil (ON) in the brain and in the small neurons located between the third and the fourth thoracic neuropils (T3-T4) and between the fourth and the fifth thoracic neuropils (T4-T5) of thoracic ganglia. Thus, the presence of aELH in male S. olivacea was designated the role of female egg laying behavior in the male mud crab.