Comparative study of the morphology of the female seminal receptacles of Ilia nucleus and Persephona mediterranea (Decapoda,Brachyura, Leucosiidae) |
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| Institution: | 1. Zoologisches Museum, Christian-Albrechts-University of Kiel, Hegewischstr. 3, 24105 Kiel, Germany;2. Zoology, Universität Regensburg, Universitätstrasse 31, 93040 Regensburg, Germany;3. German Primate Center, Leibnitz Institute of Primate Research, Functional Imaging Department, Kellnerweg 4, Göttingen, Germany;4. Clinic of Radiology and Neuroradiology, Christian-Albrechts-Universität zu Kiel, Am Botanischen Garten 14, 24118 Kiel, Germany;5. Department of Functional Morphology and Biomechanics, Zoological Institute, Christian-Albrechts-University of Kiel, 24118 Kiel, Germany;1. Institute for Astronomy (IfA), University of Edinburgh, Royal Observatory, Blackford Hill, EH9 3HJ Edinburgh, UK;2. Instituto de Astrofísica de Andalucía, CSIC, Apdo. 3004, 18080, Granada, Spain;3. Barcelona Supercomputing Center (BSC), Carrer de Jordi Girona, 29-31, 08034 Barcelona, Spain;1. Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510, CDMX, Mexico;2. Australian Museum, 1 William St., Sydney, NSW 2010, Australia;3. School of Biological, Earth and Environmental Sciences, University of New South Wales, Kensington, NSW 2052, Australia;4. Benemérita Escuela Normal de Coahuila, Calzada de los Maestros # 858 Pte., Zona Centro, Saltillo, Coahuila 25000, Mexico;5. Santa Engracia 257, Fraccionamiento Santa Elena, Saltillo, 25015, Coahuila, Mexico;6. Museo del Desierto, Carlos Abedrop Dávila 3745, Parque las Maravillas, Saltillo, 25022, Coahuila, Mexico;1. School of Information Science and Technology, Southwest Jiaotong University, China;2. ASAP Group, School of Computer Science, University of Nottingham, United Kingdom;1. School of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;2. School of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;3. Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450046, China |
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| Abstract: | Because of the poor knowledge of the morphology of the female reproductive organs of most brachyuran crabs, this study investigated two Atlantic representatives of the family Leucosiidae, Ilia nucleus (Linnaeus, 1758) and Persephona mediterranea (Herbst, 1794), using histological methods and magnetic resonance imaging (MRI). While the vagina conforms to the concave type, the arrangement of the two chambers of the seminal receptacle differs strongly from that of other eubrachyuran sperm storage organs. Both chambers are oriented laterally within the crab's body. This is in contrast to the dorso-ventral orientation described in most other known brachyuran crabs. The lateral chamber is covered by cuticle, whereas the medial chamber is covered by a holocrine glandular epithelium. The oviduct connection is located ventrally, posterior to the vagina. The oviduct orifice is characterized by a transition from the epithelium lining the oviduct to the seminal receptacle's holocrine glandular epithelium. Moreover, muscle fibres are attached to the oviduct orifice and to the sternal cuticle. This musculature can be interpreted as an important feature in the fertilization and egg-laying process by supporting and controlling the inflow of eggs into the seminal receptacle lumen. The results of this study are compared to the morphology of the seminal receptacle of another leucosiid crab, Ebalia tumefacta (Montagu, 1808), and to those of other known eubrachyuran crabs. |
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| Keywords: | Heterotremata Reproduction Seminal receptacle Histology MRI |
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