Development of a Sustainable Urchin Fishery in the Gulf of Maine
1) To test and refine techniques for enhancing urchin recruitment
2) To test and refine techniques for increasing growth rates and roe content in field populations of urchins
3) To compare the effectiveness and impact of trap-based and diver-based harvesting on manipulated and control populations of urchins
4) To synthesize existing and acquired information into a series of recommendations for developing and managing a sustainable urchin fishery
Two urchin-dominated areas at the Isles of Shoals, NH, will be subdivided into control and manipulated areas. Recruitment experiments will test the use of refuges for newly settled urchins, and food availability will be manipulated to compare growth and roe content. Harvesting techniques will be compared to determine their impact on urchin population recovery for sustained harvesting.
This study is aimed at applying existing information to develop a set of procedures to increase urchin population recovery to match harvesting pressure, and produce a sustainable urchin fishery of great economic benefit in the coastal zone of Maine and New Hampshire. The results will be made available directly to fishermen and state regulatory agencies.
Available from the National Sea Grant Library (use NHU number to search) or NH Sea Grant
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- Harris, L. and C. Chester (1996). Effects of location, exposure and physical structure on juvenile recruitment of the sea urchin "Strongylocentrotus droebachiensis" in the Gulf of Maine. Invertebrate Reproduction and Development 30(1-3):207-215.
- Sisson, C. (1998). An analysis of ecological, morphological, developmental and behavioral variation of the nudibranch, "Dendronotus frondosus": sibling speciation or phenotypic plasticity? Master's Thesis, University of New Hampshire.
- Lovely, E. (1995). Coexistence of hydroid predators and persistence of prey, "Tubularia larynx" and "Tubularia indivisa" (Hydrozoa: Tubulariidae), in shallow fouling communities. Master's Thesis, University of New Hampshire.
- Tyrrell, M. (1999). Predicted impacts of the introduced crab, "Hemograpsus sanguineus," in northern New England. Master's Thesis, University of New Hampshire.
- Lovely, E. (1999). Evolution of Pycnogonid life history traits. Doctoral Dissertation, University of New Hampshire.
- Balch, T., R. Scheibling, L. Harris, C. Chester and S. Robinson (1998). Variation in settlement of "Strongylocentrotus droebachiensis" in the northwest Atlantic: effects of spatial scale and sampling method. Proceedings of the 9th International Echinoderm Conference, Mooi and Telford, eds., pp. 555-560, Balkema, Rotterdam.
- Harris, L., M. Tyrrell and C. Chester (1998). Changing patterns for two sea stars in the Gulf of Maine, 1976-1996. Proceedings of the 9th International Echinoderm Conference, Mooi and Telford, eds., pp. 243-248, Balkema, Rotterdam.
- Harris, L. and A. Mathieson (1999). Patterns of range expansion, niche shift and predator acquisition in "Codium fragile" spp. "Tomentosoides" and "Membranipora membranacea" in the Gulf of Maine. Proceedings of the National Conference on Bioinvastions, Judith Pederson, ed., pp. 46-56, Cambridge, Mass., Jan. 24-27, 1999.
- Harris, L. (1994). Studies on the effects of depth, water flow and diet on settlement, recruitment and growth of the green sea urchin, "Strongylocentrotus droebachiensis" in the Gulf of Maine. 1994 Workshop on the Management and Biology of the Green Sea Urchin ("Strongylocentrotus droebachiensis"), pp. 75-93, Boothbay Harbor, Maine, Sept. 27-28, 1994.
- Chavanich, S. and L. Harris (1999). Potential impact of the introduced bryozoan, "Membranipora membranacea," on the subtidal snail, "Lacuna vincta," in the Gulf of Maine. Proceedings of the National Conference on Bioinvasions, Judith Pederson, ed., pp. 157-163, Cambridge, Mass., Jan. 24-27, 1999.
- Tyrrell, M. and L. Harris (1999). Potential impact of the introduced Asian shore crab, "Hemigrapsus sanguineus," in northern New England: diet, feeding preferences, and overlap with the green crab, "Carcinus maenas." Proceedings of the National Conference on Marine Bioinvasions, Judith Pederson, ed., pp. 208-220, Cambridge, Mass., Jan. 24-27, 1999.
- Williams, C. and L. Harris (1998). Growth of juvenile green sea urchins on natural and artifical diets. Proceedings of the 9th International Echinoderm Conference, Mooi and Telford, eds., pp. 889-892, Balkema, Rotterdam.