Phylogeny of crustacean apicomplexans as inferred from rDNA,
with emphasis on a newly described gregarine from an Antarctic
benthic amphipod

a 2016

Phylogeny of crustacean apicomplexans as inferred from rDNA, with emphasis on a newly described gregarine from an Antarctic benthic amphipod

DIAKIN, Andrei, Kevin WAKEMAN, Timur G. SIMDYANOV a Andrea VALIGUROVÁ

Základní údaje

Originální název

Phylogeny of crustacean apicomplexans as inferred from rDNA, with emphasis on a newly described gregarine from an Antarctic benthic amphipod

Autoři

DIAKIN, Andrei (643 Rusko, garant, domácí), Kevin WAKEMAN (124 Kanada), Timur G. SIMDYANOV (643 Rusko) a Andrea VALIGUROVÁ (703 Slovensko, domácí)

Vydání

12th European Multicolloquium of Parasitology, 2016

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10600 1.6 Biological sciences

Stát vydavatele

Finsko

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/16:00088152

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Crustacean gregarines; phylogeny; Ganymedes yurii; Antarctic amphipod

Příznaky

Mezinárodní význam

Změněno: 16. 9. 2016 14:04, Andrei Diakin, Ph.D., MSc

Anotace

V originále

Representatives of the group Apicomplexa are well known pathogens causing harmful diseases such as toxoplasmosis, malaria, and cryptosporidiosis in humans and domestic animals. Various aspects of their biology and phylogeny are intensively studied. Less is known about basal apicomplexan groups from invertebrates, namely gregarines. Nevertheless, the knowledge about characters evolution and phylogeny of this group and other related organisms can improve our understanding of evolutionary pathways within Apicomplexa. From the Antarctic, few reports concerning gregarines have ever been published. In this study, a novel eugregarine from a benthic amphipod is described using microscopic and phylogenetic analyses. Head-to-tail syzygies were found: both gamonts were of aseptate morphology and with an oval or lentil-shaped nucleus. The syzygies exhibited gliding motility. The syzygy partners were covered with a three¬membrane pellicle, forming longitudinal epicytic folds, as typical for eugregarines. The attachment site of the primite was convex and the posterior end formed a concave depression in which the cap-like anterior end of satellite plugged in. Furthermore, phylogenetic analyses of rDNA datasets from different coccidia, gregarines and other basal apicomplexans were performed. Selected available sequences of ribosomal genes (SSU and LSU) from different apicomplexans grouped in several main clades. Statistical support in the branches was sometimes low for gregarines that superficially appear to be similar in morphology. On the other hand, gregarines from crustacean hosts clustered together, despite their variable morphological features.

Návaznosti

GBP505/12/G112, projekt VaV

Název: ECIP - Evropské centrum ichtyoparazitologie

Investor: Grantová agentura ČR, ECIP - Evropské centrum ichtyoparazitologie

Citovat

DIAKIN, Andrei, Kevin WAKEMAN, Timur G. SIMDYANOV a Andrea VALIGUROVÁ. Phylogeny of crustacean apicomplexans as inferred from rDNA, with emphasis on a newly described gregarine from an Antarctic benthic amphipod. In 12th European Multicolloquium of Parasitology. 2016.

@proceedings{1354193,
   author = {Diakin, Andrei and Wakeman, Kevin and Simdyanov, Timur G. and Valigurová, Andrea},
   booktitle = {12th European Multicolloquium of Parasitology},
   keywords = {Crustacean gregarines; phylogeny; Ganymedes yurii; Antarctic amphipod},
   language = {eng},
   title = {Phylogeny of crustacean apicomplexans as inferred from rDNA, with emphasis on a newly described gregarine from an Antarctic benthic amphipod},
   year = {2016}
}

TY  - CONF
ID  - 1354193
AU  - Diakin, Andrei - Wakeman, Kevin - Simdyanov, Timur G. - Valigurová, Andrea
PY  - 2016
TI  - Phylogeny of crustacean apicomplexans as inferred from rDNA, with emphasis on a newly described gregarine from an Antarctic benthic amphipod
KW  - Crustacean gregarines
KW  - phylogeny
KW  - Ganymedes yurii
KW  - Antarctic amphipod
N2  - Representatives of the group Apicomplexa are well known pathogens causing harmful diseases such as toxoplasmosis, malaria, and cryptosporidiosis in humans and domestic animals. Various aspects of their biology and phylogeny are intensively studied. Less is known about basal apicomplexan groups from invertebrates, namely gregarines. Nevertheless, the knowledge about characters evolution and phylogeny of this group and other related organisms can improve our understanding of evolutionary pathways within Apicomplexa. From the Antarctic, few reports concerning gregarines have ever been published. In this study, a novel eugregarine from a benthic amphipod is described using microscopic and phylogenetic analyses. Head-to-tail syzygies were found: both gamonts were of aseptate morphology and with an oval or lentil-shaped nucleus. The syzygies exhibited gliding motility. The syzygy partners were covered with a three¬membrane pellicle, forming longitudinal epicytic folds, as typical for eugregarines. The attachment site of the primite was convex and the posterior end formed a concave depression in which the cap-like anterior end of satellite plugged in. Furthermore, phylogenetic analyses of rDNA datasets from different coccidia, gregarines and other basal apicomplexans were performed. Selected available sequences of ribosomal genes (SSU and LSU) from different apicomplexans grouped in several main clades. Statistical support in the branches was sometimes low for gregarines that superficially appear to be similar in morphology. On the other hand, gregarines from crustacean hosts clustered together, despite their variable morphological features.
ER  -

DIAKIN, Andrei, Kevin WAKEMAN, Timur G. SIMDYANOV a Andrea VALIGUROVÁ. Phylogeny of crustacean apicomplexans as inferred from rDNA, with emphasis on a newly described gregarine from an Antarctic benthic amphipod. In \textit{12th European Multicolloquium of Parasitology}. 2016.

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