Abstract
The first zoeal stages of the inachid crabs Inachus aguiarii de Brito Capello, 1876, I. communissimus Rizza, 1839 and Ergasticus clouei A. Milne-Edwards, 1882, are described and illustrated from laboratory-hatched material obtained from ovigerous females collected in the western Mediterranean. The morphologies of the first zoeae were compared with the corresponding stage of other known species in the family Inachidae. The zoeae of I. aguiarii and I. communissimus are very similar to those described in other species of the genus, especially I. thoracicus and I. dorsettensis. The zoeae of I. aguiarii and I. communissimus differ from each other in the number of setae on the ventral margin of the carapace. The first zoea of E. clouei, however, does not share the zoeal characters common to other Inachidae. Therefore, does not completely fit into the characteristics of the family.
References
Abelló, P., Carbonell, A. & Torres, P. (2002) Biogeography of epibenthic crustaceans on the shelf and upper slope off the Iberian Peninsula Mediterranean coasts: implications for the establishment of natural management areas. Scientia Marina, 66(Suppl. 2), 183–198.
Abelló, P., Valladares, F.J. & Castellón, A. (1988) Analysis of the structure of decapod crustacean assemblages off the Catalan coast (North-West Mediterranean). Marine Biology, 98, 39–49.
Balss, H. (1957) Decapoda, VIII: Systematik. In: Bronn, H.G. (Ed.), Klassen und Ordnungen des Tierreichs, Band 5, Abteilung 1, 7(12), 1505–1672.
Bouvier, E.L. (1940) Décapodes Marcheurs. Faune de France, 37, 404 pp.
Clark, P.F. (1983) The larval and first crab stages of three Inachus species (Crustacea, Decapoda, Majidae); a morphological and statistical analysis. Bulletin of the British Museum (Natural History), Zoology, 44, 179–190.
Clark, P.F. (1986) The larval stages of Maja squinado (Herbst, 1788) (Crustacea: Brachyura: Majidae) reared in the laboratory. Journal of Natural History, 20, 825–836.
Clark, P.F. & Webber, R. (1991) A redescription of Macrocheira kaempferi (Temminck, 1836) zoeas with discussion of the classification of the Majoidea Samouelle, 1819 (Crustacea, Brachyura). Journal of Natural History, 25, 1259– 1279.
Clark, P.F., Calazans, D.K. & Pohle, G.W. (1998) Accuracy and standardization of brachyuran larval descriptions. Invertebrate Reproduction and Development, 33, 127–144.
Cuesta Mariscal, J.A. & González-Gordillo, J.I. (1992) Presencia de Parthenope angulifrons Latreille, 1825, Inachus communissimus Rizza, 1839 & Sirpus zariquieyi Gordon, 1953 (Decapoda, Brachyura) en las costas suratlánticas españolas. Boletín de la Real Sociedad Española de Historia Natural (Sección Biológica), 88(1–4), 207–212.
Dos Santos, A. & González-Gordillo, J.I. (2004). Illustrated keys for the identification of the Pleocyemata (Crustacea: Decapoda) zoeal stages, from the coastal region of south-western Europe. Journal of Marine Biology Association of United Kingdom, 84, 205–227.
Fransozo, A. & Negreiros-Fransozo, M.L. (1997) Larval stages of Pyromaia tuberculata (Lockington, 1877) (Decapoda, Mjidae, Inachinae) reared in the laboratory. Crustaceana, 70(3), 304–323.
García-Raso, J.E. (1984) Brachyura of the coast of southern Spain. Spixiana, 7(2), 105–113.
García-Raso, J.E. (1989) Resultados de la segunda campaña del I.E.O. para la exploración de los fondos de Coral Rojo en el Mar de Alborán. Crustáceos Decápodos. Boletín del Instituto Español de Oceanografía, 5(2), 27–36.
González-Gordillo, J.I., Dos Santos, A. & Rodríguez, A. (2001) Checklist and annotated bibliography of decapod Crustacea larvae from the southwestern European coast (Gibraltar Strait area). Scientia Marina, 65(4), 275–305.
Guerao, G., Rufino, M. & Abelló, P. (2002) The complete larval development and first juvenile of the spider crab Inachus thoracicus (Brachyura, Majidae, Inachinae). Journal of Plankton Research, 24(9), 875–887.
Ingle, R.W. (1977) The larval and post-larval development of the Scorpion Spider Crab, Inachus dorsettensis (Pennant) (Family, Majidae), reared in the laboartory. Bulletin of the British Museum (Natural History), Zoology, 30, 329–348.
Ingle, R.W. (1992) Larval stages of Northeastern Atlantic Crabs, an Illustrated Key. London: Chapman and Hall, Natural history Museum Publications, 363 pp..
Kocatas, A. (1981) Liste préliminaire et repartition des Crustacés Décapodes des eaux turques. Rapports et Procès-Verbaux des Réunions - Commission Internationale pour l'Exploration Scientifique de la Mer Méditerranée, 27(2), 161–162.
Lebour, M.V. (1927) Studies of the Plymouth Brachyura. I. The rearing of crabs in captivity, with a description of the larval stages of Inachus dorsettensis, Macropodia longirostris and Maia squinado. Journal of Marine Biology Association of United Kingdom, 14, 795–820.
Lebour, M.V. (1928) The larval stages of the Plymouth Brachyura. Proceedings of the Zoological Society of London (1928), 473–560.
Manning, R. B. & Holthuis, L. B. (1981) West African brachyuran crabs (Crustacea, Decapoda). Smithsonian Contributions to Zoology, 306, 1–379.
Marques, F. & Pohle, G. (1998) The use of structural reduction in phylogenetic reconstruction of decapods and a phylogenetic hypothesis for 15 genera of Majidae, testing previous larval hypothese and assumptions. Invertebrate Reproduction and Development, 33, 241–262.
Marques, F. & Pohle, G. (2003) Searching for larval support for majoid families (Crustacea, Brachyura) with particular reference to Inachoididae Dana, 1815, Invertebrate Reproduction and Development, 43, 71–82.
Martin, J.W. & Davis, G.E. (2001) An updated classification of the recent Crustacea, Natural History Museum of Los Angeles Country Contributions in Science, 39, 1–124.
Monod, Th. (1956) Hippidea et Brachyura ouest-africains. Mémoires de l’Institut Français d’Afrique Occidentale Française, 15(2–3), 456–548.
Paula, J. (1988) The larval development of the spider crab Maja goltziana d’Oliveira, 1888 (Crustacea, Decapoda, Majidae) reared in the laboratory. Journal of Natural History, 22, 1697–1708.
Paula, J. & Cartaxana, A. (1991) Complete larval development of the spider crab Stenorhynchus lanceolatus (Brullé, 1837) (Decapoda, Brachyura, Majidae), reared in the laboratory. Crustaceana, 60(2), 114–22.
Pohle, G. (1991) Larval development of Canadian Atlantic oregoniid crabs (Brachyura, Majidae), with emphasis on Hyas coarctatus alutaceus Brandt, 1851, and a comparison with Altantic and Pacific conspecifics. Canadian Journal of Zoology, 69, 2717–2737.
Pohle, G. & Marques, F. (2000) Larval stages of Paradasygyius depressus (Bell, 1835) (Crustacea, Decapoda, Brachyura, Majidae) and a phylogenetic analysis for 21 genera of Majidae. Proceedings of the Biological Society of Washington, 113(3), 739–760.
Rice, A.L. (1980) Crab zoeal morphology and its bearing on the classification of the Brachyura. Transactions of the Zoological Society of London, 35, 271–424.
Rodríguez, A. (2002) Larval development of Maja crispata Risso 1827 (Crustacea, Decapoda, Majidae) reared in the laboratory. Journal of Natural History, 36, 1589–1600.
Sandifer, P.A. & Van Engel, W.A. (1972) Larval stages of the spider crab, Anasimus latus Rathbun, 1894 (Brachyura, Majidae, Inachinae) obtained in the laboratory. Crustacena, 23,141–151.
Santana, W., Pohle, G. & Marques, F. (2004) Larval development of Apiomithrax violaceus (A. Milne Edwards,1868) (Decapoda, Brachyura, Majoidea, Pisidae) reared in laboratory conditions, and a review of larval characters of Pisidae. Journal of Natural History, 38, 1773–1797.
d’Udekem d’Acoz, C. (1999) Inventaire et distribution des crustacés décapodes de l’Atlantique nord-oriental, de la Méditerranée et des eaux continentales adjacentes au nord de 25ºN. Patrimoines naturels (M.N.H.N./S.P.N.), 40, 1– 383.
Yang, W.T. (1976) Studies on the western Atlantic arrow crab genus Stenorhynchus (Decapoda, Brachyura, Majidae). I. Larval characters of two species and comparison with other larvae of Inachinae. Crustaceana, 31, 157–177.
Zariquiey-Álvarez, R. (1968) Crustáceos decápodos ibéricos. Investigación Pesquera, 32, 1–510.