Terrestrial gastropods were collected from wetland, grassland, and forested habitats throughout eastern and southcentral South Dakota from May-August of 1999 and 2000 to assess the role of gastropods in transmission of meningeal worm (Parelaphostrongylus tenuis) to white-tailed deer (Odocoileus virginianus) populations throughout the state. A total of 4,063 gastropods representing 14 species, f...

Transcriptional status of two intra-genomic ITS variants (Type-I and Type-II) identified in Vigna unguiculata ssp. tenuis (NI 1637) was analysed by RT-PCR. Total RNA was isolated from leaves, stem and roots of 15-day old seedlings and was reverse transcribed using specific primers for amplifying ITS-1 and ITS-2. Gel electrophoresis on a high-resolution agarose revealed that only Type-II variant...

Stored lipids in marine planktonic larvae play an important role in buoyancy and as an energy source and thus are a key to understanding the dispersal and settlement potential of larvae. However, little is known about lipid content and composition in different coral species or their temporal changes during larval dispersal. We examined the lipid content and composition of eggs and planula larva...

Terrestrial gastropods were collected, 15 June to 25 November 1994, from beneath cardboard sheets on deer range in northeastern Minnesota (USA) and examined individually for larvae of Parelaphostrongylus tenuis, the meningeal worm of white-tailed deer (Odocoileus virginianus). Overall, 10 (0.08%) of 12,096 snails and slugs were infected with a mean (+/- SD) of 3.2 +/- 2.5 P. tenuis larvae. The ...

The parasitic nematode Parelaphostrongylus tenuis is an important cause of neurologic disease of camelids in central and eastern North America. The aim of this study was to determine whether alpacas develop resistance to disease caused by P. tenuis in response to a previous infection or a combination of controlled infection and immunization. Alpacas were immunized with a homogenate of third-sta...

Multiple predator effects (MPEs) can modify the strength of pest regulation, causing positive or negative deviations from those that are predicted from independent effects of isolated predators. Despite increasing evidence that omnivory can shape predator-prey interactions, few studies have examined the impact of alternative plant food on interactions between multiple predators. In the present ...