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Confirmation of External Fertilization in the American Lobster, Homarus Americanus

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Abstract Fertilization is external in some crustaceans and internal in others. In the nineteenth century, it was reported that the American lobster (Homarus americanus) fertilized its eggs externally using spermatozoa stored in the seminal receptacle. Later investigators questioned this assumption, noting that the spermatophoric mass is sealed inside the seminal receptacle by an impervious sperm plug that prevents the spermatozoa from exiting the seminal receptacle via the orifice. This led to suggestions that fertilization in homarid lobsters is internal via transitory connectives that form between the seminal receptacle and the ovary/oviduct at the time of oviposition. Supporting evidence was obtained from studies in which fertilization occurred even when the orifice of the seminal receptacle was sealed with epoxy. We here report selective occlusion studies that resolve this conundrum. At spawning, spermatozoa leave the seminal receptacle not through the sealed orifice, but via two grooves located posterior and lateral to the orifice. Occluding these posterolateral grooves as well as the orifice of the seminal receptacle prevents fertilization, whereas occluding only the orifice does not. This explains why earlier attempts to prevent fertilization by occluding the orifice of the seminal receptacle were unsuccessful, and confirms that fertilization in the American lobster is external.

Affiliations: 1: Aquaculture Division, Department of Fisheries and Oceans, Biological Station, 531 Brandy Cove Road, St. Andrews New Brunswick, E5B 2L9, Canada ((DEA, correspondence), (SLW), (SMM)


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1. Aiken D. E. , Waddy S. L. 1982 "Cement gland development, ovary maturation and reproductive cycles in the American lobster, Homarus americanus." Journal of Crustacean Biology Vol 2 315 327
2. Aiken D. E. , Waddy S. L. , Moreland K. , Polar S. M. 1984 "Electrically induced ejaculation and artificial insemination of the American lobster Homarus americanus." Journal of Crustacean Biology Vol 4 519 527
3. Andrews E. A. 1906 "The annulus ventralis." Proceedings of the Boston Society of Natural History Vol 32 427 479
4. Bauer R. T. 1986 "Phylogenetic trends in sperm transfer and storage complexity in decapod crustaceans." Journal of Crustacean Biology Vol 6 313 325
5. Bumpus H. C. 1891 "The embryology of the American lobster." Journal of Morphology Vol 5 215 262
6. Farmer A. S. 1974 "Reproduction in Nephrops norvegicus (Decapoda: Nephropidae)." Journal of Zoology Vol 174 161 183
7. Fielder D. R. 1964 "The process of fertilization in the spiny lobster Jasus lalandii (H. Milne-Edwards)." Transactions of the Royal Society of South Australia Vol 88 161 166
8. Gesteira T. C V. 1988 "Some aspects of the reproductive biology of the American lobster (Homarus americanus Milne-Edwards)." Ph.D. Thesis, University of New Brunswick, Saint John
9. Herrick F. H. 1894 "The habits and development of the lobster, and their bearing upon its artificial propagation." Bulletin of the United States Fisheries Commission (for 1893) Vol 13 75 86
10. Herrick F. H. 1911 "Natural history of the American lobster." Bulletin of the United States Bureau of Fisheries 29: 149408 20 plates
11. Heydorn A. E F. 1969 "The rock lobster of the South African west coast, Jasus lalandii (H. Milne-Edwards). 2. Population studies, behaviour, reproduction, moulting, growth and migration." Investigational Report, Sea Fisheries Research Insitute, Cape Town, South Africa Vol 71 1 52
12. MacDiarmid A. B. 1988 "Experimental confirmation of external fertilisation in the southern temperate rock lobster Jasus edwardsii (Hutton) (Decapoda: Palinuridae)." Journal of Experimental Marine Biology and Ecology Vol 120 277 285
13. Sainte-Marie G. , Sainte-Marie B. , Sėvigny J-M. 2000 "Ejaculate storage patterns and the site of fertilization in female snow crabs (Chionoecetes opilio; Brachyura, Majidae)." Canadian Journal of Zoology Vol 78 1902 1917
14. Silberbauer B. I. 1971 "The biology of the South African rock lobster Jasus lalandii (H. Milne-Edwards). 2. The reproductive organs, mating and fertilization." Investigational Report, Sea Fisheries Research Insitute, Cape Town, South Africa Vol 93 1 46
15. Subramoniam T. 1993 "Spermatophores and sperm transfer in marine crustaceans." Advances in Marine Biology Vol 29 129 214
16. Talbot P. , Helluy S. 1995 "Reproduction and embryonic development." Pp. 177216 in J. R. Factor, ed. Biology of the Lobster Homarus americanus. Academic Press, San Diego
17. Templeman W. 1940 "The life history of the lobster." Newfoundland Government Department of Natural Resources Service Bulletin Vol 15 1 42
18. von Bonde C. 1936 "The reproduction, embryology and metamorphosis of the Cape crawfish (Jasus lalandii) (Milne-Edwards) Ortman." Union of South Africa, Department of Commerce and Industries, Fisheries and Marine Biological Survey Division, Investigational Report 6: 125
19. Waddy S. L. , Aiken D. E. 1990 "Intermolt insemination, an alternative mating strategy for the American lobster (Homarus americanus)." Canadian Journal of Fisheries and Aquatic Sciences Vol 47 2402 2406

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