Taxonomy and Phylogeny of Two Tintinnid Ciliates of Leprotintinnus (Protista, Ciliophora, Choreotrichida) Combining the Loricae, Cytological, Ontogenetic Features, and Barcoding Genes

Hu, Tao; Wang, Zhaoyi; Liu, Weiwei; X, Lin

doi:10.3389/fmars.2022.847600

Cited by 1 publication

(1 citation statement)

References 50 publications

(70 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, some species may show polymorphism in lorica, a phenomenon that cannot be ignored in both the Arctic and Antarctic zones (Dolan et al 2012). Recently, culture experiments on individuals of Helicostomella species and DNA experiments on individuals of Leprotintinnus nordqvisti have confirmed the polymorphism of tintinnid species (Santoferrara et al 2015;Hu et al 2022). Genetic studies (e.g., Kim et al 2013) have confirmed the existence of polymorphism, but the distribution of different morphs is still not properly understood.…”

Section: Introductionmentioning

confidence: 99%

Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses

Li,

Wang

et al. 2023

Polar Research

View full text Add to dashboard Cite

Weddell Gyre and Ross Gyre, which are major components of the Southern Ocean current system (Smith et al. 2007;Meredith et al. 2014). These currents play important roles in the heat transport and energy flow in the Southern Ocean and have an important impact on the distribution and survival of organisms.Microzooplankton are an important part of the ecosystem in the Southern Ocean (Garrison 1991). They are primary consumers of small phytoplankton as well as important food sources for metazoans and fish larvae (Friedenberg et al. 2012; Rollwagen-Bollens et al. 2022). As microzooplankton with a cell size ranging Abstract Tintinnids (Ciliophora) are important microzooplankton grazers. In the Southern Ocean, they are found in the Antarctic Zone, Polar Front and Subantarctic Zone. The Antarctic Zone encompasses large gyres (Weddell Gyre and Ross Gyre) and the Antarctic Slope Current around the continent. The influence of these water masses on tintinnid communities has not been studied. This study investigated the tintinnid community structure in the Weddell and Cosmonaut seas in the summer of 2022. In the Weddell Gyre, tintinnid abundance was significantly lower in the interior than at the fronts. The dominant species differed between the east and west fronts: the proportion of Codonellopsis gaussi was high at the west front, whilst Laackmanniella naviculaefera, Salpingella sp. and Salpingella faurei showed high abundances at the east front. Tintinnid communities varied from inshore to offshore of the Cosmonaut Sea, possibly because of the influence from the Antarctic Slope Current and Antarctic Circumpolar Current. The Antarctic Slope Current was characterized by the occurrence of Cymatocylis drygalskii, whilst the Antarctic Circumpolar Current was characterized by Codonellopsis glacialis, Cymatocylis convallaria and Cy. calyciformis. We proposed that Cy. drygalskii can be used as an indicator of the Antarctic Slope Current. Moreover, we classify polymorphic C. gaussi into three types, in accordance with their loricae, and report their distribution characteristics in water masses. Our results contribute to a better understanding of tintinnid horizontal distribution in different parts of the Weddell Gyre and water masses and serve as a baseline for future studies of pelagic community responses to climate change in the Southern Ocean.

show abstract