TL;DR: Three Boonea species (occurring in sympatric species pairs) occupy different habitats and have different molluscan host preferences, and B. seminuda was attracted much more to Crepidula fornicata than to Littorina littorea, and with B. bisuturalis it was vice versa.
Abstract: 1. Three Boonea species (occurring in sympatric species pairs) occupy different habitats and have different molluscan host preferences. In the field, B. seminuda is preferentially with Crepidula fornicata or Argopecten irradians, B. bisuturalis with Littorina littorea (introduced), Hyanassa obsoleta or Crassostrea virginica, and B. impressa with C. virginica. Weights of the first two species are about 0.03 to 0.17% those of their hosts. In the laboratory, B. seminuda was attracted much more to Crepidula fornicata than to Littorina littorea. With B. bisuturalis it was vice versa.2. In the laboratory, B. seminuda fed on 22 out of the 36 gastropod and bivalve "hosts" offered; B. bisuturalis fed on 37 out of 45, and B. impressa fed on 36 out of 37. Some of these mollusks probably serve as secondary hosts in nature. Boonea definitely is not host-specific. Polychaetes, Chaetopleura and Molgula were not fed on.3. Fargoa dianthophila and F. bartschi, two much rarer species, compete with each other for space and f...
TL;DR: A taxonomic review of the genera Boonea, Chrysallida, Parthenina, Ivara, Fargoa, Mumiola, Odostomella and Trabecula (Gastropoda, Pyramidellidae, Odstomiinae) from Brazil is published.
Abstract: Pimenta, Alexandre Dias, Absalao, Ricardo Silva, Miyaji, Cintia (2009): A taxonomic review of the genera Boonea, Chrysallida, Parthenina, Ivara, Fargoa, Mumiola, Odostomella and Trabecula (Gastropoda, Pyramidellidae, Odostomiinae) from Brazil. Zootaxa 2049: 39-66, DOI: 10.5281/zenodo.186507
TL;DR: In this paper, the diversity of pyramidellids occurring in the Magellanic Province of South America has been investigated, including five species new to science: Turbonilla deseadensis n. sp., Menestho beaglensis n., M. patagonica n., Brachystomia conica n, B. tenuilirata n., and B. sp.
Abstract: Current knowledge on the pyramidellids from the southern tip of South America appears restricted to a couple of species described in the beginning of the 20th century and a few taxa subsequently reported from this area, including some species recognized as new, but never formally described. This study fills this gap in the knowledge by performing the first revision on the diversity of Pyramidellidae occurring in the Magellanic Province. The material for this study arises from extant collections made along the Atlantic and Pacific coasts of Patagonia, the Beagle Channel, the Magellan Strait and in Burdwood Bank; this information was supplied with specimens from museum collections. As part of this study, eight pyramidellid species, belonging to the genera Turbonilla, Fargoa, Menestho and Brachystomia are recognized from the Magellanic Province, including five species new to science: Turbonilla deseadensis n. sp., Menestho beaglensis n. sp., M. patagonica n. sp., Brachystomia conica n. sp. and B. tenuilirata n. sp. The distinctive characters of Menestho, a genus frequently misunderstood in the past, are also discussed. The presence of Menestho and Brachystomia are here documented for the first time for the southern tip of South America. In addition, a neotype for Turbonilla strebeliStrebel, 1905 (nonVerrill, 1880) is here designated.