Chromidina

Chromidina is a genus of apostome ciliates of the family Opalinopsidae. Species of Chromidina are parasitic [3][5][6] in the renal and pancreatic appendages of cephalopods.

Phylogenetic position of Chromidina spp. within Ciliophora

Chromidina
Chromidina sp.
Scientific classification
Domain:	Eukaryota
(unranked):	SAR
(unranked):	Alveolata
Phylum:	Ciliophora
Class:	Oligohymenophorea
Order:	Astomatophorida
Family:	Opalinopsidae
Genus:	Chromidina Gonder, 1905[1]
Species
Chromidina elegans (Foettinger, 1881) [2] Chromidina coronata (Foettinger, 1881) [2] Chromidina cortezi (Hochberg, 1971) [3] Chromidina chattoni Souidenne et al., 2016 [4]

In 2016, a molecular study found that the closest relatives of Chromidina spp. were species of the apostome Pseudocollinia.[4]

References

1. Gonder R. 1905. Beiträge zur Kenntnis der Kernverhältnisse bei den in Cephalopoden schmarotzenden Infusorien. Archiv für Protistenkunde, 5, 240-262.
2. Foettinger A. 1881. Recherches sur quelques Infusoires nouveaux parasites des Céphalopodes. Archives de Biologie, 2, 345-378.
3. Hochberg FG. 1971. Some aspects of the biology of cephalopod kidney parasites. Ph.D. Dissertation, University of California Santa Barbara.
4. Souidenne, Dhikra; Florent, Isabelle; Dellinger, Marc; Justine, Jean Lou; Romdhane, Mohamed Salah; Furuya, Hidetaka; Grellier, Philippe (2016). "Diversity of apostome ciliates, Chromidina spp. (Oligohymenophorea, Opalinopsidae), parasites of cephalopods of the Mediterranean Sea". Parasite. 23: 33. doi:10.1051/parasite/2016033. ISSN 1776-1042. PMC 4988119. PMID 27530149.
5. Chatton E, Lwoff A. 1935. Les Ciliés Apostomes. Morphologie, cytologie, éthologie, évolution, systématique. Première partie. Aperçu historique et général. Étude monographique des genres et des espèces. Archives de Zoologie Expérimentale et Générale, 77, 1-453.
6. Landers SC. 2010. The fine structure of the tropho-tromont of the parasitic apostome Chromidina (Ciliophora, Apostomatida). Protistology, 6(4), 271-279 PDF.