Strombus

5-18

Authors: Duarte R.C.S., Mota E.L.S.; Almeida I.C.S.; Pessanha A.L.M.; Christoffersen M.L.; Dias T.L.P.

An inventory of the gastropods associated with three species of reef macroalgae having different thallus structures are provided. We discuss how algal architecture influences diversity patterns, abundance and species richness. Fronds of the macroalgae Gracilaria domingensis (Kützing) Sonder ex Dickie, 1874, Padina pavonica (Linnaeus) Thivy, 1960, and Cryptonemia bengryi W.R. Taylor, 1960 were collected in coastal reefs of Cabo Branco Beach, João Pessoa, State of ParaÌba, Northeastern Brazil. Thalli were sorted in the laboratory to remove the associated mollusks. The macroalgae Gracilaria domingensis and Cryptonemia bengryi presented the most heterogeneous thallus architecture. The mollusk community comprised 18 species of gastropods, belonging to 14 genera. In total, 402 specimens were recorded, of which micromollusks predominated. The most frequent species were Eulithidium affine (C.B. Adams, 1850) (80% of occurrence), Rissoina sagraiana (d'Orbigny, 1842) (60%), Astyris lunata (Say, 1826) (40%), and Phyllaplysia engeli Marcus, 1955 (33.3%), the latter representing a new record for the coast of Paraíba state. The algae C. bengryi and G. domingensis presented highest values of richness and diversity for the associated malacofauna (F1,6= 10.14; p = 0.0001). Differences in the associated mollusk communities among the three species, as well as differences in the ecological descriptors for each alga, suggest that the algal architecture influences the richness, diversity, and composition of microgastropods in the marine phytal.

29-36

Authors: Cavallari, D.C. & Simone, L.R.L.

The mollusk specimens belonging to the former physician and researcher Jorge Faria Vazís private collection were incorporated into the institutional assemblage of the Museu de Zoologia da Universidade de São Paulo from 2005 to 2013. A brief account on his life and career, as well as a statistical report of the assemblage are herein provided. The whole collection comprises 2,673 lots, from which, 2,285 contain Brazilian specimens, 367 are from other regions of the globe and 21 have unknown locality data. It includes 1,854 gastropod lots, 800 bivalve lots, tusk-shells (12 lots), cephalopods (6 lots) and a single polyplacophoran lot. Most specimens belong to terrestrial and freshwater groups (52%). In total, 184 molluscan families are present, the most abundant are: Hyriidae (Bivalvia), Bulimulidae (Gastropoda), Dentaliidae (Scaphopoda), Spirulidae (Cephalopoda) and Ischnochitonidae (Polyplacophora). The most noteworthy specimens are types and examined material from recently described and revised species, as well as several vouchers from Dr. Vaz's papers, now made available to the scientific community.