Proceedings of the National Shellfisheries Association.

v. 53 (1962)

Proceedings of the National Shellfisheries Association.

v. 45 (1954)

Proceedings of the National Shellfisheries Association.

v. 49 (1958)

Proceedings of the National Shellfisheries Association.

v. 59 (1968)

Proceedings of the National Shellfisheries Association.

v. 67 (1977)

Proceedings of the National Shellfisheries Association.

v. 46 (1955)

Proceedings of the National Shellfisheries Association.

v. 55 (1964)

Proceedings of the National Shellfisheries Association.

v. 58 (1967)

Proceedings of the National Shellfisheries Association.

v. 63 (1973)

Proceedings of the National Shellfisheries Association.

v. 54 (1963)

Proceedings of the National Shellfisheries Association.

v. 57 (1966)

Proceedings of the National Shellfisheries Association.

v. 50 (1959)

Ecological conflicts and valuation - mangroves vs. shrimp in the late 1990s

Shrimps are produced in two different ways. They are fished in the sea (sometimes at the cost of turtle destruction) or they are "farmed" in ponds in coastal areas. Such aquaculture is increasing around the world as shrimps become a valuable item of world trade. Mangrove forests are sacrificed for commercial shrimp farming. This paper considers the conflict between mangrove conservation and shrimp exports in different countries.Who has title to the mangroves, who wins and who loses in this tragedy of enclosures? Which languages of valuation are used by different actors in order to compare the increase in shrimp exports and the losses in livelihoods and in environmental services? The economic valuation of damages is only one of the possible languages of valuation which are relevant in practice. Who has the power to impose a particular language of valuation?

Neotropical monogenoidea. 25. Anacanthorus penilabiatus n. sp. (Dactylogyridae, Anacanthorinae) from Piaractus mesopotamicus (Osteichthyes, Serrasalmidae), cultivated in the State of São Paulo, Brazil

Anacanthorus penilabiatus n. sp. is described from the serrasalmid fish, Piaractus mesopotamicus (Holmberg, 1887), cultivated in the Centro de Aqüicultura, Universidade Estadual Paulista. The new species is characterized by having a relatively straight copulatory organ with a long "lip" on the distal margin and a median longitudinal flap, and a copulatory ligament. The large size of the infrapopulations of this species of parasite indicates that it should be considered a potential agent causing losses in aquaculture of the fish host.