Developmental mode in benthic opisthobranch molluscs from the northeast Pacific Ocean: Feeding in a sea of plenty

Canadian Journal of Zoology

Volumn 82, Issue 12, 2004, Pages 1954-1968

  Goddard, Jeffrey H R ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BIODIVERSITY; ESTUARIES; WATER;

FOOD QUALITY; HABITAT;

MARINE BIOLOGY;

BENTHOS; DEVELOPMENTAL BIOLOGY; FEEDING ECOLOGY; LARVAL DEVELOPMENT; MOLLUSC; PLANKTON;

BIODIVERSITY; ESTUARIES; WATER; WATER BIOLOGY;

CALIFORNIA; NORTH AMERICA; POINT CONCEPTION; UNITED STATES; WESTERN HEMISPHERE; WORLD;

CRUSTACEA; DOTO AMYRA; ECHINODERMATA; GASTROPODA; INVERTEBRATA; MOLLUSCA; NUDIBRANCHIA; OPISTHOBRANCHIA; PHIDIANA HILTONI;

EID: 20044382087     PISSN: 00084301     EISSN: None     Source Type: Journal    
DOI: 10.1139/z05-008     Document Type: Article

References (125)

1. Anderson, E.S. 1971. The association of the nudibranch Rostanga pulchra MacFarland, 1905 with the sponges Ophlitaspongia pennata, Esperiopsis originalis, and Plocamia karykina. Ph.D. thesis, University of California, Santa Cruz, Calif.
2. Austin, W.C. 1985. An annotated checklist of marine invertebrates in the cold temperate northeast Pacific. Khoyatan Marine Laboratory, Cowichan Bay, B.C.
3. Behrens, D.W. 1991. Pacific coast nudibranchs. Sea Challengers, Monterey, Calif.
4. Behrens, D. 1998. Doriopsilla spaldingi Valdés & Behrens, 1998 [online]. Available from http://slugsite.us/bow/nudwk134.htm [cited 30 December 2004].
5. Behrens, D.W. 2004. Pacific coast nudibranchs. Suppl. II. New species to the Pacific coast and new information on the oldies. Proc. Calif. Acad. Sci. 55: 11-54.
6. Behrens, D.W., and Henderson, R. 1981. Two new cryptobranch dorid nudibranchs from California. Veliger, 24: 120-128.
7. Berger, W.H. 1989. Global maps of ocean productivity. In Productivity of the oceans: present and past. Edited by W.H. Berger, V.S. Smetacek, and G. Wefer. John Wiley & Sons, New York, pp. 429-455.
8. Bertsch, H., and Hirschberg, J. 1973. Notes on the veliger of the opisthobranch Phyllaplysia taylori. Tabulata, 6: 3-5.
9. Bickell, L.R., and Chia, F.S. 1979. Organogenesis and histogenesis in the planktotrophic veliger of Doridella steinbergae (Opisthobranchia: Nudibranchia). Mar. Biol. (Berl.), 52: 291-313.
10. Bickell, L.R., and Kempf, S.C. 1983. Larval and metamorphic morphogenesis in the nudibranch Melibe leonina (Mollusca: Opisthobranchia). Biol. Bull. (Woods Hole), 165: 119-138.
11. Blanchette, C.A., Miner, B.G., and Gaines, S.D. 2002. Geographic variability in form, size and survival of Egregia menziesii around Point Conception, California. Mar. Ecol. Prog. Ser. 239: 69-82.
12. Bonar, D.B. 1978. Morphogenesis at metamorphosis in opisthobranch molluscs. In Settlement and metamorphosis of marine invertebrate larvae. Edited by F.S. Chia and M.E. Rice. Elsevier, New York. pp. 177-196.
13. Boucher, L.M. 1983. Extra-capsular yolk bodies in the egg masses of some tropical Opisthobranchia. J. Molluscan Stud. 49: 232-241.
14. Bridges, C.B. 1975. Larval development of Phyllaplysia taylori Dall, with a discussion of development in the Anaspidea (Opisthobranchiata: Anaspidea). Ophelia No. 14: 161-184.
15. Bridges, C., and Blake, J.A. 1972. Embryology and larval development of Coryphella trilineata O'Donoghue, 1921 (Gastropoda: Nudibranchia). Veliger, 14: 293-297.
16. Briggs, J.C. 1974. Marine zoogeography. McGraw-Hill, New York.
17. Briggs, K.T., Tyler, W.B., Lewis, D.B., and Carlson, D.R. 1987, Bird communities at sea off California: 1975 to 1983. Stud. Avian Biol. No. 11.
18. Burton, R.S. 1998. Intraspecific phylogeography across the Point Conception biogeographic boundary. Evolution, 52: 734-745.
19. Carlton, J.T. 1996, Biological invasions and cryptogenic species. Ecology, 77: 1653-1655.
20. Charlotte, J.H., Emlet, R.B., and Littlewood, D.T.J. 2003. Phylogeny and evolution of developmental mode in temnopleurid echinoids. Mol. Phylogenet. Evol. 28: 99-118.
21. Chen, Y.H., Shaw, P.T., and Wolcott, T.G. 1997. Enhancing estuarine retention of planktonic larvae by tidal currents. Estuar. Coast. Shelf Sci. 45: 525-533.
22. Chia, F.-S. 1974. Classification and adaptive significance of developmental patterns in marine invertebrates. Thalassia Jugosl. 10: 121-130.
23. Chia, F.-S., and Koss, R. 1978. Development and metamorphosis of the planktotrophic larvae of Rostanga pulchra (Mollusca: Nudibranchia). Mar. Biol. (Berl.), 46: 109-119.
24. Chia, F.-S., and Koss, R. 1988. Induction of settlement and metamorphosis of the veliger larvae of the nudibranch, Onchidoris bilamellata. Int. J. Invertebr. Reprod. Dev. 14: 53-70.
25. Chia, F.-S., and Walker, C.W. 1991. Echinodermata: Asteroidea. In Reproduction of marine invertebrates. Vol. VI. Echinoderms and lophophorates. Edited by A.C. Giese, J.S. Pearse, and V.B. Pearse. Boxwood Press, Pacific Grove, Calif. pp. 301-353.
26. Chivers, D.D. 1967. Observations on Pleurobranchaea californica MacFarland, 1966 (Opisthobranchia, Notaspidea). Proc. Calif. Acad. Sci. 32: 515-521.
27. Clark, K.B., and Goetzfried, A. 1978. Zoogeographic influences on development patterns of North Atlantic Ascoglossa and Nudibranchia, with a discussion of factors affecting egg size and number. J. Molluscan Stud. 44: 283-294.
28. Clark, K.B., and Jensen, K.R. 1981. A comparison of egg size, capsule size, and development patterns in the order Asoglossa (Sacoglossa) (Mollusca: Opisthobranchia). Int. J. Invertebr. Reprod. 3: 57-64.
29. Clarkson, E.N.K. 1998. Invertebrate paleontology and evolution. Blackwell Science, Oxford.
30. Cohen, A.N., and Carlton, J.T. 1995. Nonindigenous species in a United States estuary: a case study of the biological invasions of the San Francisco Bay and delta. US Fish and Wildlife Service, Washington, D.C., and Connecticut Sea Grant College Program, Groton, Conn.
31. Cronin, T.W. 1982. Estuarine retention of larvae of the crab Rhithropanopeus harrisii. Estuar. Coast. Shelf Sci. 15: 207-220.
32. Daily, M.D., Anderson, J.W., Reish, D.J., and Gorsline, D.S. 1993. The southern California bight: background and setting. In Ecology of the southern California bight. Edited by M.D. Dailey, D.J. Reish, and J.W. Anderson. University of California Press, Berkeley, Calif. pp. 1-18.
33. DeFreese, D.E., and Clark, K.B. 1983. Analysis of reproductive energetics of Florida Opisthobranchia (Mollusca: Gastropoda). Int. J. Invertebr. Reprod. 6: 1-10.
34. Dehnel, P.A., and Kong, D.C. 1979. The effect of temperature on developmental rates in the nudibranch Cadlina luteomarginata. Can. J. Zool. 57: 1835-1844.
35. Emlet, R.B. 1986. Facultative planktotrophy in the tropical echinoid Clypeaster rosaceus (Linnaeus) and a comparison with obligate planktotrophy in Clypeaster subdepressus (Gray) (Clypeasteroidea: Echinoidea). J. Exp. Mar. Biol. Ecol. 95: 183-202.
36. Emlet, R.B. 1990. World patterns of developmental mode in echinoid echinoderms. In Advances in invertebrate reproduction 5. Edited by M. Hoshi and O. Yamashita. Elsevier, New York. pp. 329-335.
37. Emlet, R.B., McEdward, L.R., and Strathmann, R.R. 1987. Echinoderm larval ecology viewed from the egg. In Echinoderm studies II. Edited by M. Jangoux and J.M. Lawrence. AA Balkema, Rotterdam. pp. 55-136.
38. Engel, C.P. 1976. The biology and life history of the nudibranch Flabellinopsis iodinea (Cooper, 1863). Ph.D. thesis, University of California, Santa Barbara, Calif.
39. Eyster, L.S. 1979. Reproduction and developmental variability in the opisthobranch Tenellia pallida. Mar. Biol. (Berl.), 51: 133-140.
40. Eyster, L.S. 1980. Distribution and reproduction of shell-less opisthobranchs from South Carolina. Bull. Mar. Sci. 30: 580-599.
41. Eyster, L.S., and Eckelbarger, K.J. 1979. Reproduction in the aeolid nudibranch Spurilla neapolitana. West. Soc. Malacol. Annu. Rep. 12: 9-10.
42. Foster, M.S., De Vogelaere, A.P., Oliver, J.S., Pearse, J.S., and Harrold, C. 1991. Open coast intertidal and shallow subtidal ecosystems of the northeast Pacific. In Ecosystems of the world. Vol. 24. Intertidal and littoral ecosystems. Edited by A.C. Mathieson and P.H. Nienhuis. Elsevier, Amsterdam, pp. 235-272.
43. Gibson, G.D., and Chia, F.-S. 1989a. Embryology and larval development of Haminoea vesicula Gould (Opisthobranchia: Cephalaspidea). Veliger, 32: 409-412.
44. Gibson, G.D., and Chia, F.-S. 1989b. Developmental variability (pelagic and benthic) in Haminaea callidegenita (Opisthobranchia: Cephalaspidea) is influenced by egg mass jelly. Biol. Bull. (Woods Hole), 176: 103-110.
45. Goddard, J.H.R. 1984. The opisthobranchs of Cape Arago, Oregon, with notes on their biology and a summary of benthic opisthobranchs known from Oregon. Veliger, 27: 143-163.
46. Goddard, J.H.R. 1987. Observations on the opisthobranch mollusks of Punta Gorda, California, with notes on the distribution and biology of Crimora coneja. Veliger, 29: 267-273.
47. Goddard, J.H.R. 1991. Unusually large polar bodies in an aeolid nudibranch: a novel mechanism for producing extra-embryonic yolk reserves. J. Molluscan Stud. 57(4)(Suppl.): 143-152.
48. Goddard, J.H.R. 1992. Patterns of development in nudibranch molluscs from the northeast Pacific Ocean, with regional comparisons. Ph.D. thesis, University of Oregon, Eugene, Oreg.
49. Goddard, J.H.R. 1996. Lecithotrophic development in Doto amyra (Nudibranchia: Dendronotacea), with a review of developmental mode in the genus. Veliger, 39: 43-54.
50. Goddard, J. 2000. Stiliger sp. from Baja California, Mexico [online]. Available from http://www.seaslugforum.net/display.cfm?id=2620 [cited 28 December 2004].
51. Goddard, J.H.R. 2001a. The early veliger larvae of Aegires albopunctatus (Nudibranchia: Notodorididae), with morphological comparisons to members of the Notaspidea. Veliger, 44: 398-400.
52. Goddard, J.H.R. 2001b. Mollusca: Gastropoda. In An identification guide to the larval marine invertebrates of the Pacific Northwest. Edited by A.L. Shanks. Oregon State University Press, Corvallis, Oreg. pp. 86-128.
53. Gonsalves-Jackson, D.C. 2001. Developmental strategies in opisthobranch mollusks across the Isthmus of Panama. Am. Zool. 41: 1457-1458.
54. Gosliner, T.M. 1995. Introduction and spread of Philine auriformis (Gastropoda: Opisthobranchia) from New Zealand to San Francisco Bay and Bodega Harbor. Mar. Biol. (Berl.), 122: 249-255.
55. Gosliner, T.M., and Millen, S.V. 1984. Records of Cuthona pustulata from the Canadian Pacific. Veliger, 26: 183-187.
56. Gosliner, T.M., Schaefer, M.C., and Millen, S.V. 1999. A new species of Doriopsilla (Nudibranchia: Dendrodorididae) from the Pacific Coast of North America, including a comparison with Doriopsilla albopunctata (Cooper, 1863). Veliger, 42: 201-210.
57. Greene, R.W. 1968. The egg masses and veligers of southern California sacoglossan opisthobranchs. Veliger, 11: 100-104.
58. Hadfield, M.G., and Miller, S.E. 1987. On developmental patterns of opisthobranchs. Am. Malacol. Bull. 5: 197-214.
59. Hadfield, M.G., and Switzer-Dunlap, M. 1984. Opisthobranchs. In The mollusca. Vol. 7. Reproduction. Edited by A.S. Tompa, N.H. Verdonk, and J.A.M. van den Biggelaar. Academic Press, New York. pp. 209-350.
60. Hand, C., and Steinberg, J. 1955. On the occurrence of the nudibranch Alderia modesta (Lovén, 1844) on the central California coast. Nautilus, 69: 22-28.
61. Harrigan, J.F., and Alkon, D.L. 1978. Larval rearing, metamorphosis, growth and reproduction of the eolid nudibranch Hermissenda crassicornis (Eschscholtz, 1831) (Gastropoda: Opisthobranchia). Biol. Bull. (Woods Hole), 154: 430-439.
62. Hickey, B.M. 1979. The California current system -hypotheses and facts. Prog. Oceanogr. 8: 191-279.
63. Holleman, J.J. 1972. Observations on growth, feeding, reproduction, and development in the opisthobranch Fiona pinnata (Eschscholtz). Veliger, 15: 142-146.
64. Hurst, A. 1967. The egg masses and veligers of thirty northeast Pacific opisthobranchs. Veliger, 9: 255-288.
65. Jackson, G.A., and Strathmann, R.R. 1981. Larval mortality from offshore mixing as a link between precompetent and competent periods of development. Am. Nat. 118: 16-26.
66. Jensen, G.C. 1995. Pacific coast crabs and shrimps. Sea Challengers, Monterey, Calif.
67. Johnson, K.B., and Shanks, A.L. 2003. Low rates of predation on planktonic marine invertebrate larvae. Mar. Ecol. Prog. Ser. 248: 125-139.
68. Kempf, S.C. 1981. Long-lived larvae of the gastropod Aplysia juliana: do they disperse and metamorphose or just slowly fade away? Mar. Ecol. Prog. Ser. 6: 61-65.
69. Kempf, S.C., and Hadfield, M.G. 1985. Planktotrophy by the lecithotrophic larvae of a nudibranch, Phestilla sibogae. Biol. Bull. (Woods Hole), 169: 119-130.
70. Kempf, S.C., and Willows, A.O. 1977. Laboratory culture of the nudibranch Tritonia diomedea Bergh (Tritonidae: Opisthobranchia) and some aspects of its behavioral development. J. Exp. Mar. Biol. Ecol. 30: 261-276.
71. Kriegstein, A.R. 1977. Stages in the post-hatching development of Aplysia californica. J. Exp. Zool. 199: 275-288.
72. Kriegstein, A.R., Castellucci, V., and Kandel, E.R. 1974. Metamorphosis of Aplysia californica in laboratory culture. Proc. Natl. Acad. Sci. U.S.A. 71: 3654-3658.
73. Krug, P.J. 1998. Poecilogony in an estuarine opisthobranch: planktotrophy, lecithotrophy, and mixed clutches in a population of the sacoglossan, Alderia modesta. Mar. Biol. (Berl.), 132: 483-494.
74. Lance, J.R. 1982. Dendrodoris nigromaculata. Opisthobranch Newsletter, 14: 29. [Illustration only.] Newsletter available from S.J. Long, 12537 9th NW, Seattle, WA 98177, USA.
75. Levin, L.A., and Huggett, D.V. 1990. Implications of alternate reproductive modes for seasonality and demography in an estuarine polychaetes. Ecology, 71: 2191-2208.
76. Marcus, Er., and Marcus, Ev. 1967. American opisthobranch mollusks. Stud. Trop. Oceanogr. (Miami), 6: 1-256.
77. McDonald, G.R. 1983. A review of the nudibranchs of the California coast. Malacologia, 24: 114-276.
78. McEdward, L.R., and Miner, E.G. 2001. Larval and life-cycle patterns in echinoderms. Can. J. Zool. 79: 1125-1170.
79. McGowan, J.A., and Pratt, I. 1954. The reproductive system and early embryology of the nudibranch Archidoris montereyensis (Cooper). Bull. Mus. Comp. Zool. Harv. Univ. 111: 261-276.
80. Mileikovsky, S.A. 1971. Types of larval development in marine bottom invertebrates, their distribution and ecological significance: a re-evaluation. Mar. Biol. (Berl.), 10: 193-213.
81. Millen, S.V. 1982. A new species of dorid nudibranch (Opisthobranchia: Mollusca) belonging to the genus Anisodoris. Can. J. Zool. 60: 2694-2705.
82. Millen, S.V. 1985. The nudibranch genera Onchidoris and Diaphorodoris (Mollusca, Opisthobranchia) in the northeastern Pacific. Veliger, 28: 80-93.
83. Millen, S.V. 1986. Northern, primitive tergipedid nudibranchs, with a description of a new species from the Canadian Pacific. Can. J. Zool. 64: 1356-1362.
84. Millen, S.V. 1987. The nudibranch genus Adalaria, with a description of a new species from the northeastern Pacific. Can. J. Zool. 65: 2696-2702.
85. Millen, S.V. 1989. Opisthobranch range extensions in Alaska with the first records of Cuthona viridis (Forbes, 1840) from the Pacific. Veliger, 32: 64-68.
86. Millen, S.V., and Gosliner, T.M. 1985. Four new species of dorid nudibranchs belonging to the genus Aldisa (Mollusca: Opisthobranchia), with a revision of the genus. Zool. J. Linn. Soc. 84: 195-233.
87. Miller, B.A. 2001. Echinodermata. In An identification guide to the larval marine invertebrates of the Pacific Northwest. Edited by A.L. Shanks. Oregon State University Press, Corvallis, Oreg. pp. 270-290.
88. Morris, R.H., Abbott, D.P., and Haderlie, E.C. 1980. Intertidal invertebrates of California. Stanford University Press, Stanford, Calif.
89. Mulliner, D.K. 1972. Breeding habits and life cycles of three species of nudibranchs from the eastern Pacific. Festivus, 3: 1-5.
90. Pearse, J.S., and Cameron, R.A. 1991. Echinodermata: Echinoidea. In Reproduction of marine invertebrates. Vol. VI. Echinoderms and lophophorates. Edited by A.C. Giese, J.S. Pearse, and V.B. Pearse. Boxwood Press, Pacific Grove, Calif. pp. 513-662.
91. Pickard, G.L., and Emery, W.J. 1990. Descriptive physical oceanography. Pergamon Press, Oxford.
92. Puls, A.L. 2001. Arthropoda: Decapoda. In An identification guide to the larval marine invertebrates of the Pacific Northwest. Edited by A.L. Shanks. Oregon State University Press, Corvallis, Oreg. pp. 179-250.
93. Ricketts, E.F., Calvin, J., and Hedgpeth, J.W. 1985. Between Pacific tides. 5th ed. Revised by D.W. Phillips. Stanford University Press, Stanford, Calif.
94. Robilliard, G.A. 1970. The systematics and some aspects of the ecology of the genus Dendronotus. Veliger, 12: 433-479.
95. Robilliard, G.A. 1971. A new species of Polycera (Opisthobranchia: Mollusca) from the northeastern Pacific, with notes on other species. Sysesis, 4: 235-243.
96. Robilliard, G.A. 1972. A new species of Dendronotus from the northeastern Pacific, with notes on Dendronotus nanus and Dendronotus robustus (Mollusca: Opisthobranchia). Can. J. Zool. 50: 421-432.
97. Roller, R.A. 1972. Three new species of eolid nudibranchs from the west coast of North America. Veliger, 14: 416-423.
98. Ruiz, G.M., Fofonoff, P.W., Carlton, J.T., Wonham, M.J., and Hines, A.H. 2000. Invasion of coastal marine communities in North America: Apparent patterns, processes, and biases. Annu. Rev. Ecol. Syst. 31: 481-531.
99. Rumrill, S.S. 1990. Natural mortality of invertebrate larvae. Ophelia No. 32: 163-198.
100. Schmekel, L., and Portmann, A. 1982. Opisthobranchia des Mittlemeeres, Nudibranchia und Saccoglossa. Springer-Verlag, Berlin.
101. Shanks, A.L. 1995. Oriented swimming by megalopae of several eastern north Pacific crab species and its potential role in their onshore migration. J. Exp. Mar. Biol. Ecol. 186: 1-16.
102. Sponaugle, S., Cowen, R.K., Shanks, A., Morgan, S.G., Leis, J.M., Pineda, J.S. et al. 2002. Predicting self-recruitment in marine populations: biophysical correlates and mechanisms. Bull. Mar. Sci. 70(1)(Suppl.): 341-375.
103. Strathmann, M.F. 1987. Reproduction and development of marine invertebrates of the northern Pacific coast. University of Washington Press, Seattle, Wash.
104. Strathmann, R.R. 1978. The evolution and loss of feeding larval stages of marine invertebrates. Evolution, 32: 894-906.
105. Strathmann, R.R. 1985. Feeding and nonfeeding larval development and life-history evolution in marine invertebrates. Annu. Rev. Ecol. Syst. 16: 339-361.
106. Strathmann, R.R. 1986. What controls the type of larval development? Summary statement for the evolution session. Bull. Mar. Sci. 39: 616-622.
107. Strathmann, R.R. 1993. Hypotheses on the origins of marine larvae. Annu. Rev. Ecol. Syst. 24: 89-117.
108. Strathmann, R., and Strathmann, M. 1982. The relationship between adult size and brooding in marine invertebrates. Am. Nat. 119: 91-101.
109. Strub, P.T., Allen, J.S., Huyer, A., and Smith, R.L. 1987. Seasonal cycles of currents, temperatures, winds and sea level over the northeast Pacific continental shelf: 35N to 48N. J. Geophys. Res. 92: 1507-1526.
110. Tchneria, P. 1980. Descriptive regional oceanography. Pergamon Press, Oxford.
111. Thompson, T.E. 1961. The importance of the larval shell in the classification of the Sacoglossa and Acoela (Gastropoda, Opisthobranchia). Proc. Malacol. Soc. Lond. 34: 233-238.
112. Thompson, T.E. 1967. Direct development in a nudibranch, Cadlina laevis, with a discussion of developmental processes in Opisthobranchia. J. Mar. Biol. Assoc. U.K. 47: 1-22.
113. Thompson, T.E. 1976. Biology of opisthobranch molluscs. Vol. I. Ray Society, London.
114. Thompson, T.E., and Brodie, G. 1988. Eastern Mediterranean Opisthobranchia: Runcinidae (Runcinacea), with a review of runcinid classification and a description of a new species from Fiji. J. Molluscan Stud. 54: 339-346.
115. Thompson, T.E., and Brown, G.H. 1984. Biology of opisthobranch molluscs. Vol. II. Ray Society, London.
116. Thompson, T.E., and Salghetti-Drioli, U. 1984. Unusual features of the development of the sacoglossan Elysia hopei in the Mediterranean Sea. J. Molluscan Stud. 50: 61-63.
117. Thorson, G. 1950. Reproduction and larval ecology of marine bottom invertebrates. Biol. Rev. Camb. Philos. Soc. 25: 1-45.
118. Todd, C.D. 1983. Reproductive and trophic ecology of nudibranch molluscs. In The mollusca. Vol. 6. Ecology. Edited by W.D. Russel-Hunter. Academic Press, New York. pp. 225-259.
119. Todd, C.D. 1991. Larval strategies of nudibranch molluscs: similar means to the same end? Malacologia, 32: 273-289.
120. Todd, C.D., Lambert, W.J., and Davies, J. 2001. Some perspectives on the biology and ecology of nudibranch molluscs: generalizations and variations on the theme that prove the rule. Boll. Malacol. 37: 105-120.
121. Valdés, A., and Behrens, D.W. 1998. A new species of Doriopsilla (Mollusca, Nudibranchia, Dendrodorididae) from the Pacific coast of North America. Proc. Calif. Acad. Sci. 50: 307-314.
122. Vance, R.R. 1973. On reproductive strategies in marine benthic invertebrates. Am. Nat. 107: 339-352.
123. Wares, J.P., Gaines, S.D., and Cunningham, C.W. 2001. A comparative study of asymmetric migration events across a marine biogeographic boundary. Evolution, 55: 295-306.
124. Williams, L.G. 1980. Development and feeding of larvae of the nudibranch gastropods Hermissenda crassicornis and Aeolidia papillosa. Malacologia, 20: 99-116.
125. Yoshioka, P.M. 1986. Life history patterns of the dorid nudibranchs Doridella steinbergae and Corambe pacifica. Mar. Ecol. Prog. Ser. 31: 179-184.