First records in Great Britain of the invasive colonial ascidian Didemnum vexillum Kott, 2002
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منابع مشابه
First record of the colonial ascidian Didemnum vexillum Kott, 2002 in the Mediterranean: Lagoon of Venice (Italy)
Numerous colonies of the invasive colonial ascidian Didemnum vexillum Kott, 2002 have been found in the Lagoon of Venice (Italy) in 2012, overgrowing fouling organisms on maritime structures such as docks, pilings, and pontoons. This is the first record for the Mediterranean Sea. A survey conducted in July 2012 revealed that D. vexillum is present in the euhaline and tidally well flushed zones ...
متن کاملDistribution of the non-indigenous colonial ascidian Didemnum vexillum (Kott, 2002) in the Bay of Fundy and on offshore banks, eastern Canada
The invasive colonial ascidian Didemnum vexillum (Kott, 2002) was initially discovered in the fall of 2013 near Parrsboro, Nova Scotia. A rapid response survey was conducted in April 2014 to confirm the presence of the species and to determine its distribution near the original detection site. Subsequent surveys between May and August 2014 examined the dredge contents collected during sea scall...
متن کاملGenetic conspecificity of the worldwide populations of Didemnum vexillum Kott, 2002
A colonial tunicate belonging to the genus Didemnum has recently been found in many temperate coastal regions throughout the world, as well as large areas of Georges Bank in the NW Atlantic. It continues to spread rapidly and compete aggressively with native, hard substrate species (e.g., mussels, barnacles, bryozoans, other ascidians). In addition, it can form dense mats on deepwater cobble-gr...
متن کاملIncreased Inter-Colony Fusion Rates Are Associated with Reduced COI Haplotype Diversity in an Invasive Colonial Ascidian Didemnum vexillum
Considerable progress in our understanding of the population genetic changes associated with biological invasions has been made over the past decade. Using selectively neutral loci, it has been established that reductions in genetic diversity, reflecting founder effects, have occurred during the establishment of some invasive populations. However, some colonial organisms may actually gain an ec...
متن کاملEffects of temperature on growth rates of colonial ascidians: A comparison of Didemnum sp. to Botryllus schlosseri and Botrylloides violaceus
An invasive colonial ascidian, Didemnum sp. [described as Didemnum lahillei by Lambert (2004) and Didemnum vestum by Kott (2004) and ecologically similar to Didemnum vexillum (Kott, 2002)], has occupied unusually large areas of seafloor and spread rapidly throughout the New England region (Valentine et al., 2007-this issue; Bullard et al., 2007-this issue). Its extreme abundance at depthsN30 m ...
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ژورنال
عنوان ژورنال: Aquatic Invasions
سال: 2009
ISSN: 1818-5487
DOI: 10.3391/ai.2009.4.4.3