DNA barcoding has attracted attention with promises to aid in species identification and discovery; however, few well-sampled datasets are available to test its performance. We provide the first examination of barcoding performance in a comprehensively sampled, diverse group (cypraeid marine gastropods, or cowries). We utilize previous methods for testing performance and employ a novel phylogen...

For many current issues in macroevolution and macroecology, it is important to know to what degree the attributes of species are shared among closely related lineages, a concept sometimes referred to as species-level heritability. Recently, Webb and Gaston proposed a new method for analyzing the heritability of geographic range size and concluded that range size is not heritable in Cretaceous g...

I. HEBMAPHKODIIISM IN MOLLUSCA. 1. Amphineura. 2. Gastropoda. 3. Lamellibranchia. II. PHYLOGENETIC EVOLUTION OJ? THE HEKM APHRODITE GLAND IN MOLLUSCA. 1. Gland with hermaphrodite acini. 2. Gland witli separate male and female acini. 3. Gland with separate male and female regions. 4. Separate male and female glands in the same individual. III. PHYSIOLOGICAL EVOLUTION OF HEHMAPHHODITISM IN THE MO...

Karucia sublacustrina a new species of freshwater snails (Hydrobiidae, Gastropoda) is described based on material collected from Skadar Lake (Montenegro, Albania). The new species belongs to monotypic genus Karucia gen. n. The shell morphology and body shape of the new genus resembles Radomaniola Szarowska, 2006 and Grossuana Radoman, 1973, from which it differs in the larger shells with relati...

Karakteristik sedimen mangrove terdiri dari fraksi pasir, lumpur dan liat. Kelimpahan gastropoda dipengaruhi oleh substrat sebagai habitat gastropoda, serta kandungan bahan organik yang berbeda pada tiap fraksi. Oleh karena itu, perlu dilakukan penelitian mengenai analisa tekstur terhadap kelimpahan di kawasan Desa Pasar Banggi, Rembang, mengingat berperan penting dalam menjaga keseimbangan eko...

Continental aquatic species richness hotspots are unevenly distributed across the planet. In present-day Europe, only two centers of biodiversity exist (Lake Ohrid on the Balkans and the Caspian Sea). During the Neogene, a wide variety of hotspots developed in a series of long-lived lakes. The mechanisms underlying the presence of richness hotspots in different geological periods have not been ...

This is the very first checklist of the terrestrial gastropods of Nepal. It includes 138 species and six subspecies, of which 22 species are endemic and four are introduced. It highlights 34 species recorded for the first time in Nepal and provides new distribution records for another 30 species.

Some novel structural features of the polar lobe of the egg of Crepidula are described. The significance of two kinds of aggregate is discussed in relation to the morphogenetic factors present in polar lobes generally. Surface configurations of the polar lobe are also described.