Pelagic tunicates at shallow hydrothermal vents of Kueishantao


Autoři: Pietro Franco aff001;  Hans-Uwe Dahms aff002;  Jiang-Shiou Hwang aff001
Působiště autorů: Institute of Marine Biology, National Taiwan Ocean University, Keelung, Taiwan, R.O.C aff001;  Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaoshiung, Taiwan aff002;  Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan aff003;  Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan aff004
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
prolekare.web.journal.doi_sk: 10.1371/journal.pone.0225387

Souhrn

The composition and abundance of the major zooplankton taxon tunicates were analyzed in a multi-year study and correlated with environmental parameters in the area around the hydrothermal vent field of Kueishantao (Turtle Island) in Taiwan. This provided the first study about tunicates above hydrothermal vents worldwide. We chose seven different stations for sample collection. Sampling was carried out in September of 2009, 2014, and 2015 (autumn) and June 2015 (summer). A total of ten tunicate species were identified belonging to the classes Appendicularia and Thaliacea during the above periods throughout the area. Considering the limited diversity of these organisms worldwide (40 species are identified in each class), we affirm that Kueishantao, a shallow water hydrothermal vent field, with 10 species provided an unexpected biodiversity hot spot for pelagic tunicates. The sampling of the organisms in the surface waters provided higher abundances compared to oblique tows. Comparing results from three autumn seasons we found that temperature values correlated with changes in tunicate abundances. We discovered strong seasonal changes in pelagic tunicate abundances over the entire survey period, with the highest abundances observed during autumn.

Klíčová slova:

Hydrothermal vents – Islands – Salinity – Sea water – Surface water – Turtles – Zooplankton – Tunicata


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2019 Číslo 12