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SEM description of the first larval instar of Achelia assimilis (Pycnogonida: Ammotheidae)

Published online by Cambridge University Press:  14 January 2011

Tobias Lehmann ,
Christa Weinzierl  and
Roland R. Melzer
Tobias Lehmann*
Affiliation:
Zoologische Staatssammlung München, Münchhausenstrasse 21, D-81247 München, Germany
Christa Weinzierl
Affiliation:
Ludwigs-Maximilians-Universität, BioZentrum Martinsried, Großhaderner Strasse 2, D-82152 Planegg-Martinsried, Germany
Roland R. Melzer
Affiliation:
Zoologische Staatssammlung München, Münchhausenstrasse 21, D-81247 München, Germany
*
Correspondence should be addressed to: T. Lehmann, Zoologische Staatssammlung München, Münchhausenstrasse 21, D-81247 München, Germany email: tobias-j-lehmann@gmx.de
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Abstract

The present paper is the first scanning electron microscope (SEM) description of a protonymphon larva of an Ammotheidae. The morphology of the first larval instar of Achelia assimilis is described in detail and illustrated for the first time. The morphological characters are compared to previous larval descriptions of other pycnogonid species. The larvae are integrated into Bain's classification of larval types within the pycnogonids (Bain, 2003a) as a ‘typical protonymphon’. Larvae were obtained from ovigerous males, caught in Punta Huinay, Huinay, Chile and analysed with light microscope and SEM. Descriptions of pycnogonid protonymphons at a species-specific level in the future will contribute to a deeper understanding of larval pycnogonid taxonomy at the level of differential diagnoses.

Keywords

sea spiderPycnogonidaPantopodaAcheliaprotonymphonlarvadevelopmentSEM

Information

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 91 , Issue 5 , August 2011 , pp. 1081 - 1087
Copyright
Copyright © Marine Biological Association of the United Kingdom 2011

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References

REFERENCES

Bain, B.A. (2003a) Larval types and a summary of postembryonic development within the pycnogonids. Invertebrate Reproduction and Development 43, 193–222.CrossRefGoogle Scholar
Bain, B.A. (2003b) Postembryonic development in the pycnogonid Austropallene cornigera (Family Callipallenidae). Invertebrate Reproduction and Development 43, 181–192.CrossRefGoogle Scholar
Bamber, N.R. (2007) A holistic re-interpretation of the phylogeny of the Pycnogonida Latreille, 1810 (Arthropoda). Zootaxa 1668, 295–312.CrossRefGoogle Scholar
Behrens, W. (1984) Larvenentwicklung und Metamorphose von Pycnogonum litorale (Chelicerata, Pantopoda). Zoomorphology 104, 266–279.CrossRefGoogle Scholar
Bogomolova, E.V. (2007) Larvae of three sea spider species of the genus Nymphon (Arthropoda: Pycnogonida) from the White Sea. Russian Journal of Marine Biology 33, 145–160.CrossRefGoogle Scholar
Bogomolova, E.V. and Malakhov, V.V. (2006) Lecithotrophic protonymphon is a special type of postembryonic development of sea spiders (Arthropoda, Pycnogonida). Doklady Biological Sciences 409, 328–331.CrossRefGoogle Scholar
Bolte, K.B. (1996) Techniques for obtaining scanning electron micrographs of minute arthropods. Proceedings of the Entomological Society of Ontario 127, 67–87.Google Scholar
Cano, E. and Lopez-Gonzalez, P.J. (2009) Novel mode of postembryonic development in Ammothea genus (Pycnogonida: Ammotheidae) from Antarctic waters. Scientia Marina 73, 541–550.CrossRefGoogle Scholar
Dogiel, V. (1911) Studien über die Entwicklungsgeschichte der Pantopoden. Nervensystem und Drüsen der Pantopodenlarven. Zeitschrift für Wissenschaftliche Zoologie 98, 109–146.Google Scholar
Gillespie, J.M. and Bain, B.A. (2006) Postembryonic development of Tanystylum bealensis (Pycnogonida, Ammotheidae) from Barkley Sound, British Columbia, Canada. Journal of Morphology 267, 308–317.CrossRefGoogle ScholarPubMed
Gonzales, S.A. and Edding, M.E. (1990) Achelia assimilis (Haswell, 1884) in the Heterozostera bed of Puerto Aldea, Coquimbo: first record from the northern Chilean coast (Pycnogonida: Ammotheidae). Proceedings of the Biological Society of Washington 103, 151–156.Google Scholar
Hedgpeth, J.W. (1961) Reports of the Lund University Chile Expedition 1948–1949, 40: Pycnogonida. Lunds Universitets Årsskrift N.F. (Series 2) 57, 1–18.Google Scholar
Ingle, R. (1992) Larval stages of Northeastern Atlantic crabs: an illustrated key. 1st edition. London, New York, Tokyo, Melbourne and Madras: Chapman & Hall.Google Scholar
Lovely, E.C. (2005) The life history of Phoxichilidium tubulariae (Pycnogonida: Phoxichilidiidae). Northeastern Naturalist 12, 77–92.CrossRefGoogle Scholar
Malakhov, V.V. and Bogomolova, E.V. (2001) The first finding of a sea spider (Pantopoda) planktonic larva. Doklady Biological Sciences 376, 91–92.CrossRefGoogle Scholar
Meisenheimer, J. (1902) Beiträge zur Entwicklungsgeschichte der Pantopoden. Zeitschrift für Wissenschaftliche Zoologie 72, 191–248.Google Scholar
Melzer, R.R., Schrödl, M., Häussermann, V., Försterra, G. and Montoya Bravo, M.F. (2006) Pycnogonids on cnidarians at fjord Comau, Southern Chile: a report on 2005 SCUBA collections. Spixiana 29, 237–242.Google Scholar
Meyer, R. and Melzer, R.R. (2004) Scanning EM diagnosis of marine Decapoda larvae: a comparison of preparation techniques. Crustaceana 77, 883–886.Google Scholar
Meyer, R., Wehrtmann, I.S. and Melzer, R.R. (2006) Morphology of the first zoeal stage of Portunus acuminatus, Stimpson, 1871 (Decapoda: Portunidae: Portuninae) reared in the laboratory. Scientia Marina 70, 261–270.CrossRefGoogle Scholar
Montoya Bravo, M.F., Müller, H.G., Arango, C.P., Tigreros, P. and Melzer, R.R. (2009) Morphology of shallow-water sea spiders (Arthropoda: Pycnogonida) from the Colombian Caribbean. Spixiana 32, 9–34.Google Scholar
Munilla, T. (1988) A collection of pycnogonids from Namibia/SW Africa. Monografias de Zoologia Marina 3, 177–204.Google Scholar
Russell, D.J. and Hedgpeth, J.W. (1990) Host utilization during ontogeny by two pycnogonid species (Tanystylum duospinum and Ammothea hilgendorfi) parasitic on the hydroid Europella everta (Coelenterata: Campanulariidae). Bijdragen tot de Dierkunde 60, 215–224.Google Scholar
Tomaschko, K.H., Wilhelm, E. and Bückmann, D. (1997) Growth and reproduction of Pycnogonum litorale (Pycnogonida) under laboratory conditions. Marine Biology 129, 595–600.CrossRefGoogle Scholar
Vilpoux, K. and Waloszek, D. (2003) Larval development and morphogenesis of the sea spider Pycnogonum litorale (Ström, 1762) and the tagmosis of the body of Pantopoda. Arthropod Structure and Development 32, 349–383.CrossRefGoogle ScholarPubMed
Wilhelm, E., Bückmann, D. and Tomaschko, K.H. (1997) Life cycle and population dynamics of Pycnogonum littorale (Pycnogonida) in a natural habitat. Marine Biology 129, 601–606.CrossRefGoogle Scholar