How Long to Read Jassa (Crustacea: Amphipoda)

How Long Does it Take to Read Jassa (Crustacea: Amphipoda)?

It takes the average reader to read Jassa (Crustacea: Amphipoda) by Kathleen Elizabeth Conlan

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Description

"Abstract: The amphipod genus Jassa Leach, 1814 now comprises 24 species that occur in temperate regions of both hemispheres on solid substrates from the lower intertidal zone to 500 m depth. The propensity for some species to form dense colonies in water intake structures and offshore platforms has brought them to attention as an unwanted pest. Based on the examination of ~25,000 specimens from ~1,100 museum and private collections, it is evident that some species of Jassa have been transported by human vectors since at least the 19th century and now occur widely. Their colonial, tube-living habit enables such transport, and collection records document them on ships, buoys and portable water systems as well as on natural movable substrates such as logs, drift algae and larger crustaceans. Because Jassa can be so readily found, but species discrimination has had a problematic history, the purpose of this monograph is to assist researchers to identify species through illustrations, descriptions, keys and habitat summaries. Seven species which were named in the 19th century but whose names have lapsed are placed in the context of currently known species. Two new species, J. laurieae n. sp. and J. kimi n. sp. are described, and J. monodon (Heller, 1866) and J. valida (Dana, 1853) are resurrected. Jassa mendozai Winfield et al., 2021 is submerged under J. valida, and J. cadetta Krapp et al., 2008 and J. trinacriae Krapp et al., 2010 are submerged under J. slatteryi Conlan, 1990. Morphological differences are related to current understanding of growth, behaviour and ecology. CO1 analysis suggests a Southern Hemisphere origin with diversification northward and an evolutionary direction toward greater physiological plasticity, leading to success in long distance transport and establishment in exotic locations. Correct identification of Jassa world-wide will facilitate further research on this ecologically important genus and will allow for differentiation of indigenous from exotic introductions. Keywords: Jassa, Amphipoda, Ischyrocerini, revision, dispersal, CO1"--Page 4.

How long is Jassa (Crustacea: Amphipoda)?

Jassa (Crustacea: Amphipoda) by Kathleen Elizabeth Conlan is 0 pages long, and a total of 0 words.

This makes it 0% the length of the average book. It also has 0% more words than the average book.

How Long Does it Take to Read Jassa (Crustacea: Amphipoda) Aloud?

The average oral reading speed is 183 words per minute. This means it takes to read Jassa (Crustacea: Amphipoda) aloud.

What Reading Level is Jassa (Crustacea: Amphipoda)?

Jassa (Crustacea: Amphipoda) is suitable for students ages 2 and up.

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