Life history of Hydroclathrus clathratus (Scytosiphonaceae, Phaeophyta) in the Azores

Marisa Freitas Toste; Manuela Isabel Parente; Ana Isabel Neto; Robert Lawson Fletcher

Life history of Hydroclathrus clathratus (Scytosiphonaceae, Phaeophyta) in the Azores

Marisa Freitas Toste, Manuela Isabel Parente, Ana Isabel Neto^*, Robert Lawson Fletcher

^*Corresponding author for this work

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

Abstract

Hydroclathrus clathratus is a common species on the rocky intertidal shores of the Island of São Miguel, Azores, mainly in spring and summer. Fertile saccate thalli appear in spring and disappear from late summer onward. Two types of life history were observed in culture: a direct-type and a heteromorphic, monophasic life history. In the direct type, reproductive cells from erect plants collected in the field developed directly into new erect thalli with plurilocular sporangia. In the heteromorphic life-history pattern, plurispores from the plurilocular sporangia of the erect thalli developed into filamentous prostrate microthalli. These developed unilocular and plurilocular sporangia in both short-day and long-day conditions at 15-22°C. Unispores released from the unilocular sporangia developed into saccate thalli, whereas plurispores gave rise to filamentous prostrate microthalli.

Original language	English
Pages (from-to)	209-218
Number of pages	10
Journal	Cryptogamie, Algologie
Volume	24
Issue number	3
Publication status	Published - Sept 2003

Keywords

Hydroclathrus clathratus
Life history
Morphology
Phaeophyta
Scytosiphonaceae

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title = "Life history of Hydroclathrus clathratus (Scytosiphonaceae, Phaeophyta) in the Azores",

abstract = "Hydroclathrus clathratus is a common species on the rocky intertidal shores of the Island of S{\~a}o Miguel, Azores, mainly in spring and summer. Fertile saccate thalli appear in spring and disappear from late summer onward. Two types of life history were observed in culture: a direct-type and a heteromorphic, monophasic life history. In the direct type, reproductive cells from erect plants collected in the field developed directly into new erect thalli with plurilocular sporangia. In the heteromorphic life-history pattern, plurispores from the plurilocular sporangia of the erect thalli developed into filamentous prostrate microthalli. These developed unilocular and plurilocular sporangia in both short-day and long-day conditions at 15-22°C. Unispores released from the unilocular sporangia developed into saccate thalli, whereas plurispores gave rise to filamentous prostrate microthalli.",

keywords = "Hydroclathrus clathratus, Life history, Morphology, Phaeophyta, Scytosiphonaceae",

author = "Toste, {Marisa Freitas} and Parente, {Manuela Isabel} and Neto, {Ana Isabel} and Fletcher, {Robert Lawson}",

year = "2003",

month = sep,

language = "English",

volume = "24",

pages = "209--218",

journal = "Cryptogamie, Algologie",

issn = "0181-1568",

publisher = "Museum National d'Histoire Naturelle",

number = "3",

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TY - JOUR

T1 - Life history of Hydroclathrus clathratus (Scytosiphonaceae, Phaeophyta) in the Azores

AU - Toste, Marisa Freitas

AU - Parente, Manuela Isabel

AU - Neto, Ana Isabel

AU - Fletcher, Robert Lawson

PY - 2003/9

Y1 - 2003/9

N2 - Hydroclathrus clathratus is a common species on the rocky intertidal shores of the Island of São Miguel, Azores, mainly in spring and summer. Fertile saccate thalli appear in spring and disappear from late summer onward. Two types of life history were observed in culture: a direct-type and a heteromorphic, monophasic life history. In the direct type, reproductive cells from erect plants collected in the field developed directly into new erect thalli with plurilocular sporangia. In the heteromorphic life-history pattern, plurispores from the plurilocular sporangia of the erect thalli developed into filamentous prostrate microthalli. These developed unilocular and plurilocular sporangia in both short-day and long-day conditions at 15-22°C. Unispores released from the unilocular sporangia developed into saccate thalli, whereas plurispores gave rise to filamentous prostrate microthalli.

AB - Hydroclathrus clathratus is a common species on the rocky intertidal shores of the Island of São Miguel, Azores, mainly in spring and summer. Fertile saccate thalli appear in spring and disappear from late summer onward. Two types of life history were observed in culture: a direct-type and a heteromorphic, monophasic life history. In the direct type, reproductive cells from erect plants collected in the field developed directly into new erect thalli with plurilocular sporangia. In the heteromorphic life-history pattern, plurispores from the plurilocular sporangia of the erect thalli developed into filamentous prostrate microthalli. These developed unilocular and plurilocular sporangia in both short-day and long-day conditions at 15-22°C. Unispores released from the unilocular sporangia developed into saccate thalli, whereas plurispores gave rise to filamentous prostrate microthalli.

KW - Hydroclathrus clathratus

KW - Life history

KW - Morphology

KW - Phaeophyta

KW - Scytosiphonaceae

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M3 - Article

AN - SCOPUS:0141792316

SN - 0181-1568

VL - 24

SP - 209

EP - 218

JO - Cryptogamie, Algologie

JF - Cryptogamie, Algologie

IS - 3

ER -

Life history of Hydroclathrus clathratus (Scytosiphonaceae, Phaeophyta) in the Azores

Abstract

Keywords

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