Secretory activity of mandibular organ fluctuates in response to reproductive season of the field crab Paratelphusa sp. (Brachyura; Decapoda): an ultrastructural study

详细信息    查看全文

• 作者：SN Sarika ; N Gayathri ; Anilkumar Gopinathan
• 关键词：Mandibular organ ; Reproduction ; Brachyuran crabs ; Decapoda ; Paratelphusa
• 刊名：Zoological Studies
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：53
• 期：1
• 全文大小：1,947 KB
• 参考文献：1. Adiyodi, KG, Adiyodi, RG (1970) Endocrine control of reproduction in Decapod Crustacea. Biol Rev 45: pp. 121-165 CrossRef
  2. Aoto, T, Kamiguchi, Y, Hisano, S (1974) Histological and ultrastructural studies on the Y-organ and mandibular organ of the freshwater prawn, Palaemon poucidens, with special reference to their relation with the molting cycle. J Fac Sci Hokkaido Univ Ser Vi Zool 19: pp. 295-306
  3. Borst, DW, Laufer, H, Landau, M, Chang, E, Hertz, W, Baker, F, Schooley, D (1987) Methyl farnesoate and its role in crustacean reproduction and development. Insect Biochem 17: pp. 1123-1127 CrossRef
  4. Byard, EH, Shivers, R, Aiken, DE (1975) The mandibular organ of the lobster, Homarus americanus. Cell Tissue Res 162: pp. 13-22 CrossRef
  5. Gunawardene, YI, Tobe, SS, Bendena, WG, Chow, BK, Yagi, KJ, Chan, SM (2002) Function and cellular localization of farnesoic acid O-methyltransferase (FAMet) in the shrimp, Metapenaeus ensis. Eur J Biochem 269: pp. 3587-3595 CrossRef
  6. Hinsch, GW (1981) The mandibular organ of the female spider crab, Libinia emarginata, in immature, mature, and ovigerous crabs. J Morphol 168: pp. 181-187 CrossRef
  7. Kappalli, S, Supriya, NT, Krishnakumar, V, Anilkumar, G, Chang, ES (2012) Hemolymph ecdysteroid titers in a brachyuran crab (Uca triangularis) that concomitantly undergoes molting and reproduction. Zool Stud 51: pp. 966-976
  8. Laufer, H, Landau, M, Homola, E, Borst, DW (1987) Methyl farnesoate: its site of synthesis and regulation of secretion in a juvenile crustacean. Insect Biochem 17: pp. 1129-1131 CrossRef
  9. Laufer, H, Biggers, WJ, Ahl, JS (1998) Stimulation of ovarian maturation in the crayfish Procambarus clarkii by methyl farnesoate. Gen Comp Endocrinol 111: pp. 113-118 CrossRef
  10. Roux, A (1968) Description d’organes mandibulaires nouveaux chez les crustacés Decapodés. C R Hebd Acad Sci Ser D Sci Nat 266: pp. 1414-1417
  11. Nagaraju, GPC (2011) Reproductive regulators in decapod crustaceans: an overview. J Exp Biol 214: pp. 3-16 CrossRef
  12. Nagaraju, GPC, Reddy, PR, Reddy, PS (2004) Mandibular organ: its relation to body weight, sex, molt and reproduction in the crab, Oziotelphusa senex senex. Aquaculture 232: pp. 603-612 CrossRef
  13. Nagaraju, GPC, Reddy, PR, Reddy, PS (2006) In vitro methyl farnesoate secretion by mandibular organs isolated from different molt and reproductive stages of the crab Oziotelphusa senex senex. Fisheries Sci 72: pp. 410-414 CrossRef
  14. Nagaraju, GPC, Rajitha, B, Borst, DW (2011) Molecular cloning and sequence of retinoid x receptor in the green crab Carcinus maenas: a possible role in female reproduction. J Endocrinol 210: pp. 379-390 CrossRef
  15. Sarika, SN, Anilkumar, G (2014) DNA binding domain of retinoid receptor gene (RXR) from a field crab inhabiting Indian peninsula. Ind J Biotech 13: pp. 52-56
  16. Sudha, K, Anilkumar, G (2007) Elevated ecdysteroid titer and precocious molt and vitellogenesis induced by eyestalk ablation in the estuarine crab, Metopograpsus messor (Brachyura: Decapoda). J Crustacean Biol 27: pp. 304-308 CrossRef
  17. Tamone, SL, Chang, ES (1993) Methyl farnesoate stimulates ecdysteroid secretion from crab y-organs in vitro. Gen Comp Endocrinol 89: pp. 425-432 CrossRef
  18. Teal, PE, Jones, D, Jones, G, Torto, B, Nyasembe, V, Borgemeister, C, Alborn, HT, Kaplan, F, Boucias, D, Li
• 刊物主题：Zoology;
• 出版者：Springer Berlin Heidelberg
• ISSN：1810-522X

文摘

Background Mandibular organ (MO) in decapods is suggested to play regulatory role in reproduction, in few species; however, MO is considered to control growth. The present study addresses this question by an ultrastructural study on the MO of the field crab, Paratelphusa sp. Our sampling for consecutive years (2008 to 2012) revealed that Paratelphusa sp. devotes July to October for reproduction, judged by the occurrence of growing ovaries and the berried females. From November to the succeeding June, the females are in a state of reproductive arrest (non-reproductive period); ovaries during this season would appear as white bands with no signs of yolk deposition. Results Morphologically, MO of Paratelphusa sp. is positioned posterior to the mandibles and is in close apposition with the distal end of the mandibular apodeme. MO of Paratelphusa sp. exhibited significant levels (t--.097, P--.0001, N--0) of season-dependent size variations. Our electron microscopic observations reveal that the MO is highly secretory during the reproductive period, evidenced by the occurrence of sacculated Golgi bodies having dense inclusions, several mitochondria with tubular cristae, and extensive networks of SER and rough endoplasmic reticulum (RER). During the non-reproductive period, however, the MO is least active; RER, the mitochondria, and the Golgi are only sparsely seen. Interestingly, the plasma membrane exhibits a highly convoluted appearance all the way through the non-reproductive period. Conclusions The present study reveals that the secretory activity of MO of Paratelphusa sp. is entrained with reproductive activity. The existence of a high correlation between MO secretory activity and ovarian growth implicates the former’s role in reproduction.