Formation of the paratomic fission zone in freshwater oligochaetes

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Formation of the paratomic fission zone in freshwater oligochaetes. / Kharin, A. V.; Zagainova, I. V.; Kostyuchenko, R. P.

In: Russian Journal of Developmental Biology, Vol. 37, No. 6, 01.12.2006, p. 354-365.

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Author

Kharin, A. V. ; Zagainova, I. V. ; Kostyuchenko, R. P. / Formation of the paratomic fission zone in freshwater oligochaetes. In: Russian Journal of Developmental Biology. 2006 ; Vol. 37, No. 6. pp. 354-365.

BibTeX

@article{ee6735a379d24b04a149ceafc42cf939,

title = "Formation of the paratomic fission zone in freshwater oligochaetes",

abstract = "Oligochaetes Nais communis and Pristina longiseta are capable of paratomy, i.e., asexual reproduction of the cross division type, when division proceeds across the long body axis and daughter organisms retain the maternal axes. Paratomy is represented by two forms: slow and rapid. Slow paratomy is accompanied by the formation of chains from no more than two zooids (N. communis), while rapid paratomy leads to the formation of chains from many zooids (P. longiseta). Analysis of the appearance and development of the zone of paratomy (constriction) has shown that when its cephalogenic part is formed, only head segments appear and are formed simultaneously, while in the somatogenic part, trunk segments appears successively. Dedifferentiated cells of the integumental epithelium appear to serve as a source of newly formed structures. It was shown using mathematical statistics that constriction is laid down in the zone defined by a system of coordinates formed by unknown factors. Although the constriction is laid down in the middle of a segment, its subsequent growth is not related to the transformation of adjacent areas of the segment.",

keywords = "Asexual reproduction, Dedifferentiation, Integumental epithelium, Nais, Oligochaeta, Paratomy, Pristina",

author = "Kharin, {A. V.} and Zagainova, {I. V.} and Kostyuchenko, {R. P.}",

year = "2006",

month = dec,

day = "1",

doi = "10.1134/S1062360406060038",

language = "English",

volume = "37",

pages = "354--365",

journal = "Russian Journal of Developmental Biology",

issn = "1062-3604",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "6",

}

RIS

TY - JOUR

T1 - Formation of the paratomic fission zone in freshwater oligochaetes

AU - Kharin, A. V.

AU - Zagainova, I. V.

AU - Kostyuchenko, R. P.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - Oligochaetes Nais communis and Pristina longiseta are capable of paratomy, i.e., asexual reproduction of the cross division type, when division proceeds across the long body axis and daughter organisms retain the maternal axes. Paratomy is represented by two forms: slow and rapid. Slow paratomy is accompanied by the formation of chains from no more than two zooids (N. communis), while rapid paratomy leads to the formation of chains from many zooids (P. longiseta). Analysis of the appearance and development of the zone of paratomy (constriction) has shown that when its cephalogenic part is formed, only head segments appear and are formed simultaneously, while in the somatogenic part, trunk segments appears successively. Dedifferentiated cells of the integumental epithelium appear to serve as a source of newly formed structures. It was shown using mathematical statistics that constriction is laid down in the zone defined by a system of coordinates formed by unknown factors. Although the constriction is laid down in the middle of a segment, its subsequent growth is not related to the transformation of adjacent areas of the segment.

AB - Oligochaetes Nais communis and Pristina longiseta are capable of paratomy, i.e., asexual reproduction of the cross division type, when division proceeds across the long body axis and daughter organisms retain the maternal axes. Paratomy is represented by two forms: slow and rapid. Slow paratomy is accompanied by the formation of chains from no more than two zooids (N. communis), while rapid paratomy leads to the formation of chains from many zooids (P. longiseta). Analysis of the appearance and development of the zone of paratomy (constriction) has shown that when its cephalogenic part is formed, only head segments appear and are formed simultaneously, while in the somatogenic part, trunk segments appears successively. Dedifferentiated cells of the integumental epithelium appear to serve as a source of newly formed structures. It was shown using mathematical statistics that constriction is laid down in the zone defined by a system of coordinates formed by unknown factors. Although the constriction is laid down in the middle of a segment, its subsequent growth is not related to the transformation of adjacent areas of the segment.

KW - Asexual reproduction

KW - Dedifferentiation

KW - Integumental epithelium

KW - Nais

KW - Oligochaeta

KW - Paratomy

KW - Pristina

UR - http://www.scopus.com/inward/record.url?scp=37849188618&partnerID=8YFLogxK

U2 - 10.1134/S1062360406060038

DO - 10.1134/S1062360406060038

M3 - Article

AN - SCOPUS:37849188618

VL - 37

SP - 354

EP - 365

JO - Russian Journal of Developmental Biology

JF - Russian Journal of Developmental Biology

SN - 1062-3604

IS - 6

ER -

ID: 36991059