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We report the first record of imposex in Triplofusus giganteus, a top predator in shallow water marine habitats. Imposex is an irreversible disorder in female caenogastropod snails caused by exposure to biocidal organotin compounds identified in vessel antifouling paints. The condition was observed in three of four snails collected from Alligator Harbor, Florida, with affected females developing a non-functional male reproductive organ, the pseudopenis. The presence of imposex is of particular concern for the long-term conservation of the species, given its slow maturation and limited reproductive output. 

A bstract A comprehensive set of azimuthal single-spin and double-spin asymmetries in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from transversely polarized protons is presented. These asymmetries include the previously published HERMES results on Collins and Sivers asymmetries, the analysis of which has been extended to include protons and antiprotons and also to an extraction in a three-dimensional kinematic binning and enlarged phase space. They are complemented by corresponding results for the remaining four single-spin and four double-spin asymmetries allowed in the one-photon-exchange approximation of the semi-inclusive deep-inelastic scattering process for target-polarization orientation perpendicular to the direction of the incoming lepton beam. Among those results, significant non-vanishing cos ( ϕ−ϕ S ) modulations provide evidence for a sizable worm-gear (II) distribution, $$ {g}_{1\mathrm{T}}^q\left(x,{\mathrm{p}}_T^2\right) $$ g 1 T q x p T 2 . Most of the other modulations are found to be consistent with zero with the notable exception of large sin ( ϕ S ) modulations for charged pions and K + .