Two-way bioinvasion: tracking the neritic non-native cyclopoid copepods Dioithona oculata and Oithona davisae (Oithonidae) in the Eastern Mediterranean Sea
نویسندگان
چکیده
Accelerated anthropogenic changes in the Eastern Mediterranean Sea (EMS) have facilitated introduction, spread and establishment of invasive copepod species this region. Here, we report introduction two non-native cyclopoid copepods Dioithona oculata Oithona davisae for first time Israeli coastal waters describe their temporal variability. The were identified by morphological characteristics, DNA barcoding phylogenetic inference. Molecular identification analysis supported taxonomical identification, nevertheless, showed cryptic speciation within D. oculata, separating Western Pacific EMS clades. In waters, presented a temporally restricted occurrence, appearing from September 2019 to December (30.0±0.7 – 21.0±1.1 °C) October 2020 (28.0±0.7 °C). highest abundances occurred autumn (October 2020), when water temperature reached 28.0 °C (7 10 ind. m-3, respectively). lowest abundance (0.35 m-3), decreased 21.0 °C, indicating that thermal affinity warm-temperate conditions, reproduction maintenance viable populations, has persisted introduced range. contrast, O. appeared almost all year around (17.0±0.5 28.0±0.7 This demonstrated peaks both 2020, (406 92 as well 17.0 (31 February confirming its wide eurythermal tolerance. Based on our findings previous observations, suggest may invaded through Suez Canal is now at onset Sea, whereas been via shipping, likely Northeast Atlantic, widely spreading successfully establishing populations across entire until Levantine Sea.
منابع مشابه
Short communication:First report of cyclopoid copepods (oithonidae) from north-eastern Arabian Sea, Karachi, Pakistan
متن کامل
Short communication:First report of cyclopoid copepods (oithonidae) from north-eastern Arabian Sea, Karachi, Pakistan
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ژورنال
عنوان ژورنال: Mediterranean Marine Science
سال: 2021
ISSN: ['1108-393X', '1791-6763']
DOI: https://doi.org/10.12681/mms.26036