Determining the native region of the putatively invasive ascidian Didemnum vexillum Kott, 2002

Stefaniak, Lauren M.; Zhang, Huan; Gittenberger, Adriaan; Smith, Kirsty F.; Holsinger, Kent E.; Lin, Senjie; Whitlatch, Robert B.

doi:10.1016/j.jembe.2012.04.012

Cited by 63 publications

(52 citation statements)

References 39 publications

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“…2009). This species is considered native to the NW Pacific but has become established 170 in temperate and cold regions worldwide (Lambert 2009;Stefaniak et al 2012;Ordóñez et 171 al. 2015).…”

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confidence: 99%

Seasonal patterns of settlement and growth of introduced and native ascidians in bivalve cultures in the Ebro Delta (NE Iberian Peninsula)

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Ordóñez

et al. 2018

Regional Studies in Marine Science

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Abstract17 Ascidians are important both as invasive species and as a fouling group in artificial marine 18 habitats, causing negative impacts in aquaculture settings and the surrounding 19 environment. The Ebro Delta is one of the major centres of bivalve production in the 20 Mediterranean and is affected by proliferation of ascidian species (mostly introduced 21 forms). Knowledge of the patterns of settlement and growth of the fouling species is 22 mandatory to attempt mitigation measures. We deployed settlement PVC plates from May 23 to September 2015 at different depths (0.2, 1 and 2 m) in the Ebro Delta oyster 24 aquaculture facilities. We then monitored the occurrences of all species and the area cover 25 of a selected subset of 6 species on a monthly basis from June 2015 to December 2016. 26 We found 15 species, of which 10 are introduced. There were some differences between 27 our plates and the oyster ropes in species abundance and composition, likely due to 28 differences in substrate complexity. For instance, Didemnum vexillum and Clavelina 29 oblonga occurred in few plates in contrast to their abundance on oysters. The most 30 abundant species were Styela plicata and Clavelina lepadiformis, which together with 31 Ecteinascidia turbinata showed a preference to grow on plates deployed in May and June. 32 Most of the species grew more at 0.2 m depth than at deeper plates. Thus, to minimise 33 fouling on bivalves, we propose spat immersion during fall and below 1 m depth. We also 34 found that number of occurrences and cover of the species are similarly informative; we 35 suggest that a periodic monitoring of species occurrence on replicate plates is sufficient for 36 detecting new introduced species as soon as possible and will provide information useful 37 for management.

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confidence: 99%

Seasonal patterns of settlement and growth of introduced and native ascidians in bivalve cultures in the Ebro Delta (NE Iberian Peninsula)

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Navarro

Ordóñez

et al. 2018

Regional Studies in Marine Science

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“…Ascidians are difficult to identify with morphological methods (Stefaniak et al, 2012). The four species of ascidians collected from Palk Bay were identified at their molecular level using COI sequences.…”

Section: Discussionmentioning

confidence: 99%

“…In this work, there was no open sign of saturation, in spite of the high genetic variability, and analyses of the nucleotide sequences. Stefaniak et al (2012) reported that the phylogenetic analysis was done to confirm the identification of D. vexillum species. Thus, molecular methods are the very perfect way of identifying ascidian species.…”

Section: Discussionmentioning

confidence: 99%

Molecular identification of ascidians from the Palk Bay Region, Southeast coast of India

Iyappan

Ananthan

Sathishkumar

2015

Mitochondrial DNA Part A

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“…Also known as the star tunicate due to the star-shaped arrangement of individual zooids within the colony, B. schlosseri develops synchronously and undergoes weekly developmental cycles that generate new zooids at the same time as old zooids regress. Other tunicate genomes currently in the sequencing pipeline include those of the phlebobranch ascidians Phallusia mammillata , Phallusia fumigata (Tassy et al 2010 ;Roure et al 2014 ), andDidemnum vexillum (Abbott et al 2011 ;Stefaniak et al 2012 ), as well as the stolidobranch ascidians Halocynthia roretzi , Halocynthia aurantium (Tassy et al 2010 ), Molgula occulta , Molgula oculata , and Molgula occidentalis . Stages of blastogenic development were described by Sabbadin as well as Watanabe, and its complete genome was fi nally published in 2013.…”

Section: Tunicata: Experimental Models For Evodevo Researchmentioning

confidence: 99%

Evolutionary Developmental Biology of Invertebrates 6

2015

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Determining the native region of the putatively invasive ascidian Didemnum vexillum Kott, 2002

Cited by 63 publications

References 39 publications

Seasonal patterns of settlement and growth of introduced and native ascidians in bivalve cultures in the Ebro Delta (NE Iberian Peninsula)

Seasonal patterns of settlement and growth of introduced and native ascidians in bivalve cultures in the Ebro Delta (NE Iberian Peninsula)

Molecular identification of ascidians from the Palk Bay Region, Southeast coast of India

Evolutionary Developmental Biology of Invertebrates 6

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