Hayer, Sarah and Koehnk, Stephanie and Schubart, Christoph D. and Boretius, Susann and Gorb, Stanislav N. and Brandis, Dirk (2017) Comparative study of the morphology of the female seminal receptacles of Ilia nucleus and Persephona mediterranea (Decapoda, Brachyura, Leucosiidae). ARTHROPOD STRUCTURE & DEVELOPMENT, 46 (2). pp. 274-286. ISSN 1467-8039, 1873-5495
Full text not available from this repository. (Request a copy)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. (C) 2017 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SOUTHEASTERN BRAZILIAN COAST; LIBINIA-SPINOSA CRUSTACEA; CRAB INACHUS-PHALANGIUM; SPIDER CRAB; SEXUAL-MATURITY; REPRODUCTIVE-SYSTEM; RELATIVE GROWTH; CHIONOECETES-OPILIO; MAJA-BRACHYDACTYLA; COPULATORY SYSTEM; Heterotremata; Reproduction; Seminal receptacle; Histology; MRI |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:00 |
| Last Modified: | 14 Feb 2019 10:30 |
| URI: | https://pred.uni-regensburg.de/id/eprint/253 |
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