Five species of Oxyporinae: Oxyporus occipitalis Fauvel, Oxyporus quinquemaculatus LeConte, Oxyporus major Gravenhorst, Oxyporus rufipennis LeConte, and Oxyporus stygicus Say, are newly recorded from New Brunswick, bringing the number of Oxyporinae known from the province to eight. The first documented records from New Brunswick are provided for Oxyporus kiteleyi reported by Majka et al. (2011)...

Understanding/predicting ecological invasions is an important challenge in modern ecology because of their immense economical and ecological costs. Recent studies have revealed that within-species variation in behaviour (i.e. animal personality) can shed light on the invasion process. The general hypothesis is that individuals' personality type may affect their colonization success, suggesting ...

Differences in predation intensity experienced by organisms can lead to divergent natural selection, driving evolutionary change. Western mosquitofish (Gambusia affinis) exhibit larger caudal regions and higher burst-swimming capabilities when coexisting with higher densities of predatory fish. It is hypothesized that a trade-off between steady (constant-speed cruising; important for acquiring ...

A greater knowledge of the morphology and the development of the infective third larval stage of Neoaplectana bibionis Bovien, 1937, a parasite of arthropods, makes it possible to recognise the second larval stage and present a description of all the developmental stages in the life cycle of the species. Four larval stages can be recognised. L1 hatches from the egg. In a suitable host, when the...

Saline to freshwater invasions have become increasingly common in recent years. A key hypothesis is that rates of freshwater invasions have been amplified in recent years by increased food concentration, yet this hypothesis has remained unexplored. We examined whether elevated food concentration could enhance freshwater tolerance, and whether this effect evolves following saline to freshwater i...

The Cuban fauna of the genus Berosus Leach, 1817 is reviewed based on newly collected material as well as historical and type specimens. Nine species are recognized, including three recorded from Cuba for the first time: Berosus infuscatus LeConte, 1855, Berosus interstitialis Knisch, 1924 (= Berosus stribalus Orchymont, 1946 syn. n.) and Berosus metalliceps Sharp, 1882. Only one of the nine Cu...

Title of Dissertation / Thesis: INTERACTIONS OF VIBRIO CHOLERAE SEROGROUPS O1 AND O139 AND COPEPODS Tonya Kafí Rawlings, Doctor of Philosophy, 2005 Dissertation / Thesis Directed By: Dr. Rita R. Colwell, Department of Cell Biology and Molecular Genetics Vibrio cholerae O1 El Tor and O139 Bengal have caused cholera epidemics throughout Bangladesh and elsewhere in the world with a seasonal regula...

Seasonal fluctuations in zooplankton abundance between July 1973 and July 1974 showed a clear peak in total copepods and rotifers in February-March, and a less pronounced peak in July-August. Standing crop and production estimates for the two dominant copepods, Acarfia fonsa and Eurytemoru uffinis, revealed that the February-March peak was primarily E. affinis and sustained far higher biomass (...

In this study, we document the first recorded range extension of genus Synaphobranchus from East Mariana Basin in Western Pacific Ocean. We sequenced complete mitochondrial (mt) genome two deep-sea eels (Synaphobranchus brevidorsalis and S. affinis) collected The mt genomes affinis were 16,686 bp 16,677 length, respectively, consisted 13 protein-coding genes, 22 tRNA rRNA genes. Molecular phylo...