Reproductive biology of the Caribbean brooding octocoral Antillogorgia hystrix

The reproductive biology of the Caribbean gorgonian Antillogorgia hystrix was studied in the shallow-water reefs of Cross Harbour, Great Abaco (The Bahamas) from 2009 to 2010. Antillogorgia hystrix is an internal brooder that reproduces annually. The population at Cross Harbour was gonochoric and th...

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Veröffentlicht in:Invertebrate biology Jg. 133; H. 4; S. 299 - 313
Hauptverfasser: Coelho, Márcio A.G., Lasker, Howard R.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Hoboken Blackwell Publishing Ltd 01.12.2014
Wiley Subscription Services, Inc
Schlagworte:
Aquariums
Bahamas
Broadcasting
Caribbean
Coral reefs
Corals
embryogenesis
Embryonic growth stage
evolution
Fecundity
Gametes
genus
Gorgonacea
gorgonian
Hystrix
invertebrates
Larvae
Larval development
life history
Miozoa
Octocorallia
Oocytes
oogenesis
reproductive mode
Sex ratio
Sexual reproduction
sexual system
Shallow water
spermatogenesis
symbionts
sympatry
Caribbean area
ASW, Caribbean Sea, Bahamas
Caribbean
Bahamas
ISSN:1077-8306, 1744-7410
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Zusammenfassung:The reproductive biology of the Caribbean gorgonian Antillogorgia hystrix was studied in the shallow-water reefs of Cross Harbour, Great Abaco (The Bahamas) from 2009 to 2010. Antillogorgia hystrix is an internal brooder that reproduces annually. The population at Cross Harbour was gonochoric and the sex ratio was skewed toward females (∼3:1). Oogenesis precedes spermatogenesis by several months, and lasts at least 9 months, with oocytes >100 μm in diameter first becoming visible in dissections of samples from February; mature oocytes are present in late October–November. The size of mature oocytes (400–900 μm in diameter) was greater than that of the spermaries, which were rarely larger than 400 μm. Brooded planulae were observed in polyps from early November to mid-December, and planula release was observed in aquaria in December 2009, which suggests that planulation occurs continuously over this period. Planulae of A. hystrix contained dinoflagellate symbionts, presumably acquired during embryogenesis and/or by mature planulae while they were in the gastrovascular cavity of the polyp. Brooding is an uncommon reproductive strategy among Caribbean gorgonians and this is the first report of internal brooding in the genus Antillogorgia. The genus contains a number of sympatric species with different modes of reproduction, and knowledge of their reproductive biology is critical to understand their ecology and evolution.
Bibliographie:MCTES
European Social Fund - No. SFRH/BD/72572/2010
NSF - No. OCE-0825625
ark:/67375/WNG-236LWBDP-3
ArticleID:IVB12070
istex:290286460150E8406E5FC27F83F4D00E2CB1C476
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1077-8306
1744-7410
DOI:10.1111/ivb.12070