Morphology of Stenothoe cf. tergestina (Nebeski, 1881) (Crustacea, Amphipoda, Stenothoidae), recent invader to the Black Sea
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Abstract
The relevance of research on species new to regions is governed by their interaction with species of local ecosystems, as it may be negative in some instances. The aim of this work is to clarify the morphology and variability of some parameters of body and appendages of adult males and females of Stenothoe cf. tergestina which is similar to Stenothoe tergestina (Nebeski, 1881) but has some morphological differences not allowing to classify them as different species. Methods of morphology investigations and analysis under both light and electron microscopes were used. A detailed description of adult S. cf. tergestina females and males, their appendages, and the sex structure of the population from fouling of constructions of a mussel-and-oyster farm near Sevastopol is provided. New data on the discovered taxon were comparatively analyzed with similar data from other habitats to clarify the species affiliation. The variability of several morphological traits was revealed. The length of females in the populations exceeded the length of males. The finding of individuals on various substrates evidences for high adaptability of the species to this habitat.
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References
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