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The identity, distribution, and impacts of non-native apple snails in the continental United States
Clarifying species identifications permits a more accurate assessment of introduction histories and distributions, and provides a very different picture of the tempo and pattern of invasions than was inferred when the three species with channeled sutures were considered one. Expand
Sessile snails, dynamic genomes: gene rearrangements within the mitochondrial genome of a family of caenogastropod molluscs
Evidence is provided that the lability of the molluscan mitochondrial genome extends to the family level by describing extensive gene order changes that have occurred within the Vermetidae, a family of sessile marine gastropods that radiated from a basal caenogastropod stock during the Cenozoic Era. Expand
Phylogeny of Veneroidea (Mollusca: Bivalvia) based on morphology and molecules
New phylogenetic analyses on 114 taxa tested the monophyly of Veneroidea, Veneridae, and 17 nominal venerid subfamilies, using morphological and molecular data and molecular sequences from mitochondrial (16S, cytochrome oxidase I) and nuclear (28S, histone 3) genes. Expand
Adaptations to Physical Stresses in the Intertidal Zone: The Egg Capsules of Neogastropod Molluscs
Synopsis. The encapsulation of eggs within benthic egg capsules or gelatinous egg masses is a common phenomenon among many marine invertebrate groups, yet the functional significance of many aspectsExpand
Changing identities: tRNA duplication and remolding within animal mitochondrial genomes
It is demonstrated that inferring tRNA orthologs among taxa by using anticodon triplets and deduced secondary structure can be misleading: through a process of tRNA duplication and mutation in the anticodon doublet, remolded leucine (LUUR) tRNA genes have repeatedly taken over the role of isoaccepting LCUN leucines within metazoan mtDNA. Expand
Protogynous Sex Change in the Intertidal Isopod Gnorimosphaeroma oregonense (Crustacea: Isopoda).
This study provides the first evidence from external morphology and population structure that Gnorimosphaeroma oregonense, an abundant, sexually dimorphic intertidal isopod, undergoes protogynous (female to male) sex change. Expand
Genetic Diversity in a Morphologically Conservative Invasive Taxon: Multiple Introductions of Swamp Eels to the Southeastern United States
Genetic analysis of introduced populations, especially in morphologically conservative taxa, can clarify introduction histories, identify management units and source populations, provide a moreExpand
Associations Between Egg Capsule Morphology and Predation Among Populations of the Marine Gastropod, Nucella emarginata.
Variation in capsule morphology among populations of N. emarginata may, at least in part, reflect selection for the protection of embryos against predation. Expand
A major mitochondrial gene rearrangement among closely related species.
A mitochondrial gene rearrangement involving major genes that has occurred within a genus of marine vermetid gastropods that diversified within the Cenozoic is reported, estimating that this gene order change may have occurred within the last 38–48 Myr. Expand
The dragon tamed? A molecular phylogeny of the Conoidea (Gastropoda)
A new molecular phylogeny based on a total of 102 conoidean genera (87 ‘turrids’, 5 cones and 10 terebrids) and three mitochondrial genes is presented, which recognizes 14 clades. Expand