Megalorchestia corniculata

Megalorchestia corniculata - Distribution of Neomolgus...

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Distribution of Neomolgus littoralis on Megalorchestia corniculata by Sex Josh Ahn Comparing the distribution of the mite, Neomolgus littoralis , on the beach hopper, Megalorchestia corniculata, by sex. Introduction The beach hoppers, Megalorchestia corniculata, are amphipods that are one of the most abundant organisms on the sandy beach. These creatures spend most of the day burrowed in the sand and come out at night to feed on wrack brought on shore by waves and tides. The burrowing behavior displayed by this species helps them avoid desiccation stress, heat stress, and predation by other organisms. Megalorchestia corniculata is one of three different species of beach hoppers that inhabit the Goleta beaches. These beach hoppers are infected by two types of symbionts, mites and nematodes, which use them as a means of transportation. These mites and nematodes are not considered to be parasites because they are not known to have any effects on their hosts. The mites feed on the nematodes and are found inhabiting these hoppers beneath their carapaces. Previous research done in Mark Page’s lab at the University of California, Santa Barbara shows that the distribution of mites on these beach hoppers is aggregated, meaning that they tend to infest in large numbers on certain hoppers rather than in a random uniform manner among all hoppers. The purpose of this particular
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study was to determine and compare the distribution of mites among males and females of the species, Megalorchestia corniculata. Materials and Methods We used 60 individuals, 30 males and 30 females, of the species, Megalorchestia corniculata, for our experiment. We collected our samples among the wrack on the Campus Point beach in Goleta, CA.
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Megalorchestia corniculata - Distribution of Neomolgus...

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