Morphological variability of choanocyte kinetids supports a novel systematic division within Oscarellidae (Porifera, Homoscleromorpha)

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Morphological variability of choanocyte kinetids supports a novel systematic division within Oscarellidae (Porifera, Homoscleromorpha). / Pozdnyakov , Igor; Sokolova , Agniya; Sergey, Karpov ; Ruiz, Cesar; Perez, Thierry; Ekimova, Irina; Ereskovsky , Alexander.

In: Journal of Zoological Systematics and Evolutionary Research, Vol. 59, No. 1, 01.2021, p. 31-43.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{f5547ba234da4c2cb66ec393570e63d5,

title = "Morphological variability of choanocyte kinetids supports a novel systematic division within Oscarellidae (Porifera, Homoscleromorpha)",

abstract = "Homoscleromorpha is a recently recognized class within the phylum Porifera. While molecular analyses support monophyly of Homoscleromorpha, morphological data are largely lacking. Here, we investigate and comparatively analyze the detailed morphology of kinetids (flagellar apparatus) in choanocytes of ten Oscarella species. The kinetid is known to be a phylogenetically important trait that can possibly reflect relationships of sponges at the level of orders. We also conduct a phylogenetic analysis based on previously published sequences. We found the family Oscarellidae is subdivided into two large groups, and choanocyte kinetids structure strongly supports this division. The first group includes Oscarella lobularis, O. tuberculata, O. bergenensis, O. viridis, O. rubra, O. malakhovi, O. microlobata, O. carmela, O. filipoi, and O. zoranja. These species possess nuclei located in a basal position without any connection to the kinetosome. The second group includes O. balibaloi, O. nicolae, O. kamchatkensis, O. pearsei, O. imperialis, and Pseudocorticium jarrei, whose nuclei are connected with the kinetosome. In addition, this second group also shares mesohylar spherulous cells harboring paracrystalline inclusions. The choanocyte kinetid structure seems to be an essential phylogenetic and diagnostic morphological trait, and we propose to include it in future species descriptions. Our results imply assignation of the second group to the genus Pseudocorticium. This taxonomic suggestion, however, needs additional data on the remaining Oscarella species.",

keywords = "sponges, Oscarella, choanocytes, systematics, kinetid, choanocytes, kinetid, Oscarella, sponges, systematics, PHYLOGENY, FUNGI, GENUS, FLAGELLAR APPARATUS, PLAKINIDAE, EVOLUTION, ALGAE, DEMOSPONGIAE, SPONGES",

author = "Igor Pozdnyakov and Agniya Sokolova and Karpov Sergey and Cesar Ruiz and Thierry Perez and Irina Ekimova and Alexander Ereskovsky",

note = "Publisher Copyright: {\textcopyright} 2020 Wiley-VCH GmbH",

year = "2021",

month = jan,

doi = "10.1111/jzs.12417",

language = "English",

volume = "59",

pages = "31--43",

journal = "Journal of Zoological Systematics and Evolutionary Research",

issn = "0947-5745",

publisher = "Wiley-Blackwell",

number = "1",

}

RIS

TY - JOUR

T1 - Morphological variability of choanocyte kinetids supports a novel systematic division within Oscarellidae (Porifera, Homoscleromorpha)

AU - Pozdnyakov , Igor

AU - Sokolova , Agniya

AU - Sergey, Karpov

AU - Ruiz, Cesar

AU - Perez, Thierry

AU - Ekimova, Irina

AU - Ereskovsky , Alexander

PY - 2021/1

Y1 - 2021/1

N2 - Homoscleromorpha is a recently recognized class within the phylum Porifera. While molecular analyses support monophyly of Homoscleromorpha, morphological data are largely lacking. Here, we investigate and comparatively analyze the detailed morphology of kinetids (flagellar apparatus) in choanocytes of ten Oscarella species. The kinetid is known to be a phylogenetically important trait that can possibly reflect relationships of sponges at the level of orders. We also conduct a phylogenetic analysis based on previously published sequences. We found the family Oscarellidae is subdivided into two large groups, and choanocyte kinetids structure strongly supports this division. The first group includes Oscarella lobularis, O. tuberculata, O. bergenensis, O. viridis, O. rubra, O. malakhovi, O. microlobata, O. carmela, O. filipoi, and O. zoranja. These species possess nuclei located in a basal position without any connection to the kinetosome. The second group includes O. balibaloi, O. nicolae, O. kamchatkensis, O. pearsei, O. imperialis, and Pseudocorticium jarrei, whose nuclei are connected with the kinetosome. In addition, this second group also shares mesohylar spherulous cells harboring paracrystalline inclusions. The choanocyte kinetid structure seems to be an essential phylogenetic and diagnostic morphological trait, and we propose to include it in future species descriptions. Our results imply assignation of the second group to the genus Pseudocorticium. This taxonomic suggestion, however, needs additional data on the remaining Oscarella species.

AB - Homoscleromorpha is a recently recognized class within the phylum Porifera. While molecular analyses support monophyly of Homoscleromorpha, morphological data are largely lacking. Here, we investigate and comparatively analyze the detailed morphology of kinetids (flagellar apparatus) in choanocytes of ten Oscarella species. The kinetid is known to be a phylogenetically important trait that can possibly reflect relationships of sponges at the level of orders. We also conduct a phylogenetic analysis based on previously published sequences. We found the family Oscarellidae is subdivided into two large groups, and choanocyte kinetids structure strongly supports this division. The first group includes Oscarella lobularis, O. tuberculata, O. bergenensis, O. viridis, O. rubra, O. malakhovi, O. microlobata, O. carmela, O. filipoi, and O. zoranja. These species possess nuclei located in a basal position without any connection to the kinetosome. The second group includes O. balibaloi, O. nicolae, O. kamchatkensis, O. pearsei, O. imperialis, and Pseudocorticium jarrei, whose nuclei are connected with the kinetosome. In addition, this second group also shares mesohylar spherulous cells harboring paracrystalline inclusions. The choanocyte kinetid structure seems to be an essential phylogenetic and diagnostic morphological trait, and we propose to include it in future species descriptions. Our results imply assignation of the second group to the genus Pseudocorticium. This taxonomic suggestion, however, needs additional data on the remaining Oscarella species.

KW - sponges, Oscarella, choanocytes, systematics, kinetid

KW - choanocytes

KW - kinetid

KW - Oscarella

KW - sponges

KW - systematics

KW - PHYLOGENY

KW - FUNGI

KW - GENUS

KW - FLAGELLAR APPARATUS

KW - PLAKINIDAE

KW - EVOLUTION

KW - ALGAE

KW - DEMOSPONGIAE

KW - SPONGES

UR - http://www.scopus.com/inward/record.url?scp=85091146940&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/892ef9e5-3630-3ada-9cd1-5e7b585a9d90/

U2 - 10.1111/jzs.12417

DO - 10.1111/jzs.12417

M3 - Article

VL - 59

SP - 31

EP - 43

JO - Journal of Zoological Systematics and Evolutionary Research

JF - Journal of Zoological Systematics and Evolutionary Research

SN - 0947-5745

IS - 1

ER -

ID: 61327456