Tube-like structures within the ovarian follicle of Hydrolagus colliei indicate the early origins of follicle cell processes

© 2020 The Fisheries Society of the British Isles..

Follicle cell processes (FCP) are actin-based, tube-like structures that connect the developing oocyte to the follicle cells throughout oogenesis. They were first described in Selachians (sharks) where their suggested roles were facilitating the transport of metabolites to the developing oocyte and providing structural support to the large egg cells of sharks, an early stage in the evolution of viviparity. Subsequent studies found that FCP are absent in Rajiformes (skates), suggesting that FCP may have been novel structures specific to the sharks. Here, FCP in Hydrolagus colliei, a Chimaeriform, were described. The FCP of H. colliei differ morphologically from those previously described in sharks, but as they also contain actin, they presumably play similar roles provisioning the developing oocyte and providing structural support. The presence of FCP in the order Chimaeriformes suggests that their origin predates the split of the elasmobranchs and the holocephalans.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:97

Enthalten in:

Journal of fish biology - 97(2020), 3 vom: 07. Sept., Seite 691-695

Sprache:

Englisch

Beteiligte Personen:

Crawford, Lydia [VerfasserIn]
Bart, Henry [VerfasserIn]
Harold, Enrique L [VerfasserIn]
Huckaba, Thomas M [VerfasserIn]
Davenport, Ian R [VerfasserIn]

Links:

Volltext

Themen:

Chimaeriformes
Follicle cell processes
Holocephali
Hydrolagus colliei
Journal Article
Oogenesis

Anmerkungen:

Date Completed 14.12.2020

Date Revised 14.12.2020

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1111/jfb.14423

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM310860393