TitleComparative ultrastructure of the spermatozoa of the Majoidea (Crustacea, Decapoda, Brachyura) with new data on six species in five genera
Publication TypeJournal Article
Year of Publication2014
AuthorsTudge CC., Scheltinga DM., Jamieson BGM., Guinot D., de Forges BRicher.
Date PublishedJan
Type of ArticleArticle
ISBN Number0001-7272
Accession NumberBIOSIS:PREV201400040356
Keywords00504, General biology - Taxonomy, nomenclature and terminology, 16504,, 63554, Invertebrata:, 64054,, Animals, Arthropods, Crustaceans,, Animals, Arthropods, Crustaceans, Invertebrates, Arthropoda, Invertebrata, Animalia, autapomorphy, Crustacea [75100], general and systematic - Arthropoda: Crustacea, hyalinus], Invertebrata, Animalia, Invertebrata:comparative, experimental morphology, physiology and, Invertebrates, Malacostraca [75112], monoceros] [Pyromaia tuberculata] [Camposcia retusa] [Inachus, pathology - Arthropoda: crustacea, phalangium] [Brachyura] [Macropodia longirostris] [Stenorhynchus, Reproductive System (Reproduction), Reproductive system - Physiology and biochemistry, reproductive system/acrosome, reproductive system/operculum, reproductive system/spermatozoa, riisei] [Oxypleurodon orbiculatus] [Oxypleurodon stuckiae] [Grypacheus, seticornis] [Majoidea] [Schizophrys aspera] [Schizophrys rufescens], sperm, Systematics and Taxonomy, [Crustacea]/Crustacea, Arthropoda,, [Decapoda] [Chionoecetes opilio] [Menaethius, [Huenia heraldica] [Cyrtomaia furici] [Platymaia rebierei] [Podochela
AbstractComparative ultrastructure of majoid spermatozoa belonging to 23 species, in 19 genera and five families, is considered, with new data on Schizophrys aspera; S.rufescens (Majidae, Majinae); Camposcia retusa (Inachidae); Pyromaia tuberculata (Inachoididae); and Huenia heraldica and Menaethius monoceros (Epialtidae, Epialtinae). The oregoniid Chionoecetes opilio, and inachids Cyrtomaia furici, Platymaia rebierei, Macropodia longirostris and Inachus phalangium, possibly with Camposcia retusa, but not Podochela riisei, appear to form a group. Within the inachids, Macropodia and Inachus are especially close. A domed central acrosome zone, seen in most inachid sperm, in majines (both Schizophrys species), in pisines (Oxypleurodon orbiculatus and O.stuckiae) and epialtines (Huenia heraldica and Menaethius monoceros), appears to be an autapomorphy of these majoids. A peripheral acrosome zone is seen in the inachid Grypacheus hyalinus, two inachoidids (P.tuberculata and Stenorhynchus seticornis) and the majid Maja squinado. Pyromaia tuberculata differs from other inachoidids in having a slightly dome-shaped operculum. The mithracine Macrocoeloma trispinosum (Majidae) sperm more closely resembles Inachoididae, than Inachidae. Spermatologically, the family Majidae and the subfamily Majinae are not homogeneous. Spermatozoal ultrastructure does not support a majoid-hymenosomatid relationship and is equivocal with regard to the placement of Cryptochiridae in either the Thoracotremata or Heterotremata, the prominent operculum strongly differentiates cryptochirids from Majoidea.