期刊
NEOTROPICAL ICHTHYOLOGY
卷 5, 期 3, 页码 405-414出版社
SOC BRASILEIRA ICTIOLOGIA
DOI: 10.1590/S1679-62252007000300020
关键词
longsnout seahorse; mangrove; habitat use; population structure; Brazil; conservation
类别
This paper provides a case study of a threatened seahorse species, Hippocampus reidi, highlighting the importance of using ecological information to assist conservation and management initiatives. Underwater visual sighting data (50 x 2m transect) gathered along the NE, SE and S portions of the Brazilian coast revealed an unequal distribution across localities, perhaps related to harvesting pressure, and a mean density of 0.026 ind.m-(2.) Our findings suggest some restricted spatial use by H. reidi, which was consistent with its estimated home range, and with re-sighting of specimens. Reproduction was recorded year-round, however productive peaks may exist. Components of habitat structure mostly used as anchoring points were mangrove plants, macroalgae, cnidarians, seagrass, sponges, and bryozoans. Conservation recommendations include: further characterization and mapping of habitats; assessment of availability and condition of rnicrohabitats in selected areas, and studies on dispersal routes during initial life stages.
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