Publication: The identification and distribution of gonadotropin-releasing hormone-like peptides in the central nervous system and ovary of the giant freshwater prawn, Macrobrachium rosenbergii
Issued Date
2008-03-01
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ISSN
13542516
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2-s2.0-40149095367
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Mahidol University
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SCOPUS
Bibliographic Citation
Invertebrate Neuroscience. Vol.8, No.1 (2008), 49-57
Suggested Citation
Apichart Ngernsoungnern, Piyada Ngernsoungnern, Scott Kavanaugh, Stacia A. Sower, Prasert Sobhon, Prapee Sretarugsa The identification and distribution of gonadotropin-releasing hormone-like peptides in the central nervous system and ovary of the giant freshwater prawn, Macrobrachium rosenbergii. Invertebrate Neuroscience. Vol.8, No.1 (2008), 49-57. doi:10.1007/s10158-008-0067-5 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/19855
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Title
The identification and distribution of gonadotropin-releasing hormone-like peptides in the central nervous system and ovary of the giant freshwater prawn, Macrobrachium rosenbergii
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Abstract
In the present study, we demonstrated the existence of GnRH-like peptides in the central nervous system (CNS) and ovary of the giant freshwater prawn, Macrobrachium rosenbergii using immunocytochemistry. The immunoreactivity (ir) of lamprey (l) GnRH-III was detected in the soma of medium-sized neurons located in neuronal cluster number 11 in the middle part of supraesophageal ganglion (deutocerebrum), whereas ir-octopus (oct) GnRH was observed in the soma of both medium-sized and large-sized neurons in thoracic ganglia, as well as in the fibers innervating the other medium-sized and large-sized neuronal cell bodies in the thoracic ganglia. In addition, ir-lGnRH-I was observed in the cytoplasm of late previtellogenic oocyte and early vitellogenic oocyte. These data suggest that M. rosenbergii contain at least three isoforms of GnRH: two GnRH isoforms closely related to lGnRH-III and octGnRH in the CNS, whereas another isoform, closely related to lGnRH-I, was localized in the ovary. This finding provides supporting data that ir-GnRH-like peptide(s) may exist in this decapod crustacean. © 2008 Springer-Verlag.