{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T03:46:22Z","timestamp":1747194382498,"version":"3.40.5"},"reference-count":1,"publisher":"Magnolia Press","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Zootaxa"],"abstract":"The morphology of juveniles of Mithraculus forceps A. Milne-Edwards, 1875, raised in the laboratory, is described. The larvae were obtained from ovigerous females collected in the wild, maintained in the rearing system for culture of crabs (400 L). A total of 229 larvae (zoea I), from 7 females were distributed in lots of 20 larvae kept in glass flasks (500 ml), with seawater circulation and temperature and salinity constants, which were checked daily for molts or deaths. After the larvae reached the juvenile stage, exuviae and dead specimens were deposited in a scientific collection. We analyzed the external morphology (N = 10 ind.) of each size class (total = 8). We determined the number of size classes, based on carapace width CW vs. carapace length CL (mm) and its dispersion points, in which we can observe non-hierarchical groupings with no size classes overlapping. We analyzed the relative growth of the juveniles using the technique \u201cStandard Major Axis\u2019\u2019 (Type II regression). The relationships CW vs. CL and CW vs. AW showed negative allometry (b < 1; p < 0.05). The relationships CW vs. CPH and CW vs. CPL are isometric (b = 1; p > 0.05). The most remarkable morphological characters of the juveniles (first size class) are the following: spines at the anterior margin of the carapace, inner marginal teeth in the propodus and dactylus of the chelipeds, number of articles in the antennular endopod and the maxillular endopod, absence of setae on the maxillar endopod, and absence of rudimentary pleopods. \r\n\u00a0<\/jats:p>","DOI":"10.11646\/zootaxa.5196.4.6","type":"journal-article","created":{"date-parts":[[2022,10,20]],"date-time":"2022-10-20T22:56:34Z","timestamp":1666306594000},"page":"567-587","source":"Crossref","is-referenced-by-count":0,"title":["Juvenile morphology of the ornamental crab Mithraculus forceps A. Milne-Edwards, 1875 (Crustacea, Brachyura)"],"prefix":"10.11646","volume":"5196","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7609-7302","authenticated-orcid":false,"given":"LUCAS LOPES","family":"GALIOTTI","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7036-215X","authenticated-orcid":false,"given":"MARIANA","family":"ANTUNES","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0493-5095","authenticated-orcid":false,"given":"EDUARDO A. JR","family":"BOLLA","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0493-5095","authenticated-orcid":false,"given":"MARIA LUCIA","family":"NEGREIROS-FRANSOZO","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"4913","published-online":{"date-parts":[[2022,10,21]]},"reference":[{"key":"146179","unstructured":"

Barros-Alves, S.D.P., Almeida, A.C., Fransozo, V., Alves, D.F.R., Silva, J.C.D. & Cobo, V.J. (2012) Population biology of shrimp Macrobrachium jelskii (Miers, 1778) (Decapoda, Palaemonoidea) at the Grande River at northwest of the state of Minas Gerais, Brazil. Acta Limnologica Brasiliensia, 24 (3), 266\u2013275. https:\/\/doi.org\/10.1590\/S2179-975X2012005000044
Branco, J., Hillesheim, J.C., Fracasso, H.A.A., Christoffersen, M.L. & Evangelista, C.L. (2010) Bioecology of the ghost crab Ocypode quadrata (Fabricius, 1787) (Crustacea: Brachyura) compared with other intertidal crabs in the southwestern Atlantic. Journal of Shellfish Research, 29, 503\u2013512. https:\/\/doi.org\/10.2983\/035.029.0229
Calado, R., Bartilotti, C., Narciso, L. & Santos, A. dos (2004) Redescription of the larval stages of Lysmata seticaudata (Risso, 1816) (Crustacea, Decapoda, Hippolytidae) reared under laboratory conditions. Journal of Plankton Research, 26, 737\u2013752. https:\/\/doi.org\/10.1093\/plankt\/fbh072
Calado, R., Lin, J., Rhyne, A.L., Ara\u00fajo, R. & Narciso, L. (2003) Marine ornamental decapods\u2014popular, pricey, and poorly studied. Journal of Crustacean Biology, 23 (4), 963\u2013973. https:\/\/doi.org\/10.1651\/C-2409
Calado, R., Vitorino, A., Dionisio, G. & Dinis, M.T. (2007) A recirculated maturation system for marine ornamental decapods. Aquaculture, 263, 68\u201374. https:\/\/doi.org\/10.1016\/j.aquaculture.2006.10.013
Clark, P.F. & Cuesta, J.A. (2015) Larval systematics of Brachyura. In: Castro. P., Davie, P.J.F., Guinot, D., Schram, F.R. & Von Vaupel Klein, C. (Eds.), Treatise on Zoology\u2014Anatomy, Taxonomy, Biology. 9C-II. Brill NV, Leiden, pp. 981\u20131048. https:\/\/doi.org\/10.1163\/9789004190832_020
Clark, P.F., Calazans, D.K. & Pohle, G.W. (1998a) Accuracy and standardization of brachyuran larval descriptions. Invertebrate Reproduction & Development, 33 (2\u20133), 127\u2013144. https:\/\/doi.org\/10.1080\/07924259.1998.9652627
Clark, P.F. Calazans, D.K. & Rodrigues, S.S. (1998b) Libinia spinosa H. Milne Edwards, 1834 (Crustacea: Majidae: Pisinae): a reappraisal of larval characters from laboratory reared material. Invertebrate Reproduction & Development, 33, 2\u20133, 145\u2013157. https:\/\/doi.org\/10.1080\/07924259.1998.9652628
Cobo, V.J. & Okamori, C.M. (2008) Fecundity of the spider crab Mithraculus forceps (Decapoda, Mithracidae) from the northeastern coast of the state of S\u00e3o Paulo, Brazil. Iheringia, S\u00e9rie Zoologia, 98 (1), 84\u201387. https:\/\/doi.org\/10.1590\/S0073-47212008000100012
Cobo, V.J. (2005) Population biology of the spider crab, Mithraculus forceps (A. Milne-Edwards, 1875) (Majidae, Mithracinae) on the Southeastern Brazilian coast. Crustaceana, 78 (9), 1079\u20131087. https:\/\/doi.org\/10.1163\/156854005775361016
Corgos, A. & Freire, J. (2006) Morphometric and gonad maturity in the spider crab Maja brachydactyla: a comparison of methods for estimating size at maturity in species with determinate growth. ICES Journal of Marine Science, 63 (5), 851\u2013859. https:\/\/doi.org\/10.1016\/j.icesjms.2006.03.003
Davanso, T.M., Taddei, F. G., Hirose, G.L. & da Costa, R.C. (2018) Sexual maturity, handedness and sexual dimorphism of the freshwater crab Dilocarcinus pagei in Southeastern Brazil. Boletim do Instituto de Pesca, 42 (2), 269\u2013279. https:\/\/doi.org\/10.20950\/1678-2305.2016v42n2p269
Flores, A.A., Marques, F.P. & Negreiros-Fransozo, M.L. (2002) Postlarval stages and growth patterns of the spider crab Pyromaia tuberculata (Brachyura, Majidae) from laboratory-reared material. Journal of Crustacean Biology, 22 (2), 314\u2013327. https:\/\/doi.org\/10.1163\/20021975-99990238
Fransozo, A. & Negreiros-Fransozo, M.L. (1987) Morfologia dos primeiros est\u00e1gios juvenis de Eriphia gonagra (Fabricius, 1781) e Eurypanopeus abbreviatus (Stimpson, 1860) (Crustacea, Decapoda, Xanthidae), obtidos em laborat\u00f3rio. Pap\u00e9is Avulsos de Zoologia, 36 (22), 257\u2013277. https:\/\/doi.org\/10.11606\/issn.2526-3358.bolzoo.1986.122338
Fransozo, A. & Negreiros-Fransozo, M.L. (1997) Larval stages of Pyromaia tuberculata (Lockington, 1877) (Decapoda, Majidae, Inachinae) reared in the laboratory. Crustaceana, 70 (3), 304\u2013323. https:\/\/doi.org\/10.1163\/156854097X00591
Garm, A. & Watling, L. (2013) The crustacean integument: setae, setules, and other ornamentation. In: Watling, L. & Thiel, M. (Eds.), The Natural History of Crustacea Vol. 1. Functional Morphology Diversity. Oxford University Press, New York, New York, pp. 167\u2013198. https:\/\/doi.org\/10.1093\/acprof:osobl\/9780195398038.003.0006
Garm, A. (2004) Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods. Zoological Journal of the Linnean Society, 142 (2), 233\u2013252. https:\/\/doi.org\/10.1111\/j.1096-3642.2004.00132.x
Gore, R.H., Scotto, L.E. & Yang, W.T. (1982) Microphrys bicornutus (Latreille, 1825): the complete larval development under laboratory conditions with notes on other mithracine larvae (Decapoda: Brachyura: Majidae). Journal of Crustacean Biology, 2 (4), 514\u2013534. https:\/\/doi.org\/10.2307\/1548092
Gregati, R.A., Negreiros-Fransozo M.L., L\u00f3pez-Greco, L.S. & Fransozo, V (2010) Reproductive cycle and ovarian development of the marine ornamental shrimp Stenopus hispidus in captivity. Aquaculture, 306, 185\u2013190. https:\/\/doi.org\/10.1016\/j.aquaculture.2010.05.009
Guerao, G. & Rotllant, G. (2009) Post-larval development and sexual dimorphism of the spider crab Maja brachydactyla (Brachyura: Majidae). Scientia Marina, 73 (4), 797\u2013808. https:\/\/doi.org\/10.3989\/scimar.2009.73n4797
Guerao, G. & Rotllant, G. (2010) Development and growth of the early juveniles of the spider crab Maja squinado (Brachyura: Majoidea) in an individual culture system. Aquaculture, 307 (1), 105\u2013110. https:\/\/doi.org\/10.1016\/j.aquaculture.2010.06.006
Guerao, G., Rufino, M. & Abell\u00f3, P. (2002) The complete larval development and first juvenile of the spider crab Inachus thoracicus Roux, 1830 (Brachyura: Majidae: Inachinae). Journal of Plankton Research, 24 (9), 875\u2013887. https:\/\/doi.org\/10.1093\/plankt\/24.9.875
Hartnoll, R.G. (1978) The determination of relative growth in Crustacea. Crustaceana, 34 (3), 281\u2013293. https:\/\/doi.org\/10.1163\/156854078X00844
Hebling, N.J., Fransozo, A. & Negreiros-Fransozo, M.L. (1982) Desenvolvimento dos primeiros est\u00e1gios juvenis de Panopeus herbstii H. Milne-Edwards. 1834 (Crustacea, Decapoda, Xanthidae), criados em laborat\u00f3rio. Naturalia, 7, 177\u2013188.
Huxley, J.S. (1950) Relative growth and form transformation. Proceedings of the Royal Society of London, Series B-Biological Sciences, 137 (889), 465\u2013469. https:\/\/doi.org\/10.1098\/rspb.1950.0055
Ingle, R.W. (1977) The larval and post-larval development of the scorpion spider crab, Inachus dorsetensis (Pennant) (Family: Majidae), reared in the laboratory. Bulletin of the British Museum of Natural History, Zoology, 30, 331\u2013348.
Ingle, R.W. & Clark, P.F. (1980) The larval and post-larval development of gibbs\u2019s spider crab, Pisa armata (Latreille) (family Majidae: subfamily Pisinae), reared in the laboratory. Journal of Natural History, 14 (5), 723\u2013735. https:\/\/doi.org\/10.1080\/00222938000770601
Luppi, T.A. & Spivak, E.D. (2003) Postembryonic development of Pyromaia tuberculata (Lockington, 1877): a review of larval and postlarval morphology. Scientia Marina, 67 (2), 201\u2013214. https:\/\/doi.org\/10.3989\/scimar.2003.67n2201
Melo, G.A.S. (1996) Manual de Identifica\u00e7\u00e3o dos Brachyura (Caranguejos e Siris) do Litoral Brasileiro. 1\u00aa Edi\u00e7\u00e3o. Pl\u00eaiade\/FAPESP, S\u00e3o Paulo. [unknown pagination]
Penha-Lopes, G., Figueiredo, J. & Narciso, L. (2007) Modeling survival and growth of Mithraculus forceps\u2019 larvae and juveniles (A. Milne Edwards, 1875) (Decapoda: Brachyura: Majidae). Aquaculture, 264 (1\u20134), 285\u2013296. https:\/\/doi.org\/10.1016\/j.aquaculture.2006.12.019
Penha-Lopes, G., Rhyne, A.L., Lin, J. & Narciso, L. (2005) The larval rearing of the marine ornamental crab, Mithraculus forceps (A. Milne Edwards, 1875) (Decapoda: Brachyura: Majidae). Aquaculture Research, 36 (13), 1313\u20131321. https:\/\/doi.org\/10.1111\/j.1365-2109.2005.01349.x
Penha-Lopes, G., Rhyne, A.L., Lin, J. & Narciso, L. (2006) Effects of temperature, stocking density and diet on the growth and survival of juvenile Mithraculus forceps (A. Milne Edwards, 1875) (Decapoda: Brachyura: Majidae). Aquaculture Research, 37, 398\u2013408. https:\/\/doi.org\/10.1111\/j.1365-2109.2006.01447.x
Rhyne, A.L., Fujita, Y. & Calado, R. (2006) Larval development and first crab of Mithraculus sculptus (Decapoda: Brachyura: Majoidea: Mithracidae) described from laboratory-reared material. Journal of the Marine Biological Association of the United Kingdom, 86 (5), 1133\u20131147. https:\/\/doi.org\/10.1017\/S0025315406014111
Rhyne, A.L., Penha-Lopes, G. & Lin, J. (2005) Growth, development, and survival of Mithraculus sculptus (Lamarck) and Mithraculus forceps (A. Milne Edwards, 1875) (Decapoda: Brachyura: Majidae): economically important marine ornamental crabs. Aquaculture, 245, 183\u2013191. https:\/\/doi.org\/10.1016\/j.aquaculture.2004.11.016
Rodr\u00edguez, A. (1997) Larval and postlarval development of Pisa tetraodon (Pennant, 1777) (Decapoda: Majidae) reared in the laboratory, Journal of Plankton Research, 19, 29\u201341. https:\/\/doi.org\/10.1093\/plankt\/19.1.29
Warton, D.I. & Weber, N.C. (2002) Common slope tests for bivariate errors\u2010in\u2010variables models. Biometrical Journal: Journal of Mathematical Methods in Biosciences, 44 (2), 161\u2013174. https:\/\/doi.org\/10.1002\/1521-4036(200203)44:2%3C161::AID-BIMJ161%3E3.0.CO;2-N
Warton, D.I., Duursma, R.A., Falster, D.S. & Taskinen, S. (2012) smatr 3\u2014an R package for estimation and inference about allometric lines. Methods in Ecology and Evolution, 3 (2), 257\u2013259. https:\/\/doi.org\/10.1111\/j.2041-210X.2011.00153.x
Warton, D.I., Wright, I.J., Falster, D.S. & Westoby, M. (2006) Bivariate line-fitting methods for allometry. Biological reviews, 81 (2), 259\u2013291. https:\/\/doi.org\/10.1017\/S1464793106007007
Williamson, D.I. (1969) Names of larvae in Decapoda and Euphausiacea. Crustaceana, 16, 210\u2013213. https:\/\/doi.org\/10.1163\/156854069X00510
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