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Embryonic Development of the American Lobster ( Homarus americanus ): Quantitative Staging and Characterization of an Embryonic Molt Cycle
Open accessAbstract
The growth of a single brood of lobsters (Homarus americanus Milne-Edwards 1837) maintained at constant temperature is studied from the naupliar stage to hatching, and the sequence of appearance of morphological, anatomical, and behavioral characteristics observed. A percent-staging system based upon Perkins' eye index (1972) is presented, and ten equally spaced embryonic stages are illustrated and characterized at different levels of resolution: whole eggs, dissected embryos, antennulae and telsons. The tegumentary and setal changes in the telson show that a complete molt cycle takes place in the egg starting at about 12% embryonic development (E12%) with the molt of the nauplius into the metanauplius and ending just after hatching when the metanauplius molts into a first stage larva (L1, first zoea). At E30%, the cuticle begins to separate from the setae in the telson; this signals the start of Drach's (1939) stage D0 of the metanaupliar embryonic molt cycle. At that time, the first sign of organogenesis of the L1, the formation of the endopod of the antennulae, becomes visible; presumed sensory neurons and their axons are observed at the tip of the exopod of the antennulae where a giant sensillum is differentiating. During D0 the setae of the first larval stage are forming proximally and medially in the bilobed telson under the metanaupliar cuticle. At E90%, these setae are retracting, and the embryo has entered stage D1. After hatching (E100%), the telson of the free metanauplius (prelarva) shows the characteristics of stage D2-3 and ecdysis soon follows. The arrested development observed at constant temperature in the experimental brood occurred at stage D0 of the metanaupliar molt cycle, whereas development was resumed as the embryos entered stage D1. These changes in developmental pace from D0 to D1 in the embryonic molt cycle are parallel to those occurring in older lobsters (Aiken, 1973). The quantitative staging of lobster development from extrusion to hatching, and the description of the embryonic molt cycle will facilitate future investigations on particular aspects of the embryogenesis of Homarus such as neural differentiation.
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“We saw no evidence of a molt that, as Helluy and Beltz (1991) have seen in lobster, conforms to the surface of the embryo before hatching.”
From Embryonic Coat of the Grass Shrimp Palaemonetes pugio (1997) · cites this paper as Helluy and Beltz, 1991
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Cites
Hormonal Control of Behavior: Amines and the Biasing of Behavioral Output in Lobsters
Kravitz, E. A. (1988) · Science · doi:10.1126/science.2902685 · Cited by 350
Wear, R. G. (1974) · Journal of the Marine Biological Association of the United Kingdom · doi:10.1017/s0025315400022918 · Cited by 302
Proecdysis, Setal Development, and Molt Prediction in the American Lobster (Homarus americanus)
Aiken, D. E. (1973) · Journal of the Fisheries Research Board of Canada · doi:10.1139/f73-214 · Cited by 282
SUR LA MÉTHODE DE DÉTERMINATION DES STADES D'INTERMUE ET SON APPLICATION GÉNÉRALE AUX CRUSTACÉS
Drach, P., & Tchernigovtzeff, C. (1967) · HAL · Cited by 269
The American lobster; a study of its habits and development
Herrick, F. H. (1895) · Govt. Print. Off. eBooks · doi:10.5962/bhl.title.53809 · Cited by 264
Aiken, D. E. (1980) · Elsevier eBooks · doi:10.1016/b978-0-12-177401-1.50009-0 · Cited by 238
Chan, S. F., Rankin, S. M., & Keeley, L. L. (1988) · Biological Bulletin · doi:10.2307/1541558 · Cited by 236
Quantitative staging of embryonic development of the grasshopper,Schistocerca nitens
Bentley, D., Keshishian, H., Shankland, M., & Toroian‐Raymond, A. (1979) · Development · doi:10.1242/dev.54.1.47 · Cited by 229
Ultrastructure of the aesthetasc (olfactory) sensilla of the spiny lobster, Panulirus argus
Grünert, U., & Ache, B. W. (1988) · Cell and Tissue Research · doi:10.1007/bf00215452 · Cited by 198
Ecophysiological studies on the developing eggs and embryos of the European lobster Homarus gammarus
Pandian, T. J. (1970) · Marine Biology · doi:10.1007/bf00352599 · Cited by 160
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Metadata
- Authors
- Helluy, S. M., & Beltz, B. S.
- Affiliations
- Wellesley College (US)
- ORCID
- Beltz, B. S.
- Venue
- The Biological Bulletin
- Publisher
- University of Chicago Press
- Published
- 1991-06
- Volume
- 180
- Issue
- 3
- Pages
- 355-371
- ISSN
- 0006-3185 (ISSN-L)
- 1939-8697
- OpenAlex
- W1936566951
- Cited by
- 138
- References
- 42
- Citations by year
- 2026: 5 · 2025: 1 · 2024: 4 · 2023: 2 · 2022: 5 · 2021: 1 · 2020: 3 · 2019: 5 · 2018: 3 · 2017: 1 · 2016: 2 · 2015: 3 · 2014: 7 · 2013: 5 · 2012: 4
- FWCI
- 2.52
- Type
- journal article
- Language
- en
- Open access
- Licence
- cc-by-nc-sa
- Locations
- Biological Bulletin (publishedVersion)
- PubMed (publishedVersion)
- Biodiversity Heritage Library (Smithsonian Institution) (submittedVersion, cc-by-nc-sa)
- Topics
- Physical Sciences › Environmental Science › Ecology › Crustacean biology and ecology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine Biology and Ecology Research
- Keywords
- Homarus americanus, embryonic development, zoea, telson, setae, arrested development, molting, neuronal differentiation, crustacean development
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