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Patterns of reproduction in two co-occurring Great Barrier Reef sponges

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dc.contributor Southern Cross Univ
dc.contributor Aims
dc.contributor Sch Environm Sci & Engn
dc.contributor Coll Sci & Engn
dc.contributor Indian Ocean Marine Res Ctr
dc.contributor Macro
dc.contributor University Of Western Australia
dc.contributor Little Cayman Res Ctr
dc.contributor James Cook Univ
dc.contributor Univ Western Australia
dc.contributor James Cook University
dc.contributor Marine Ecol Res Ctr
dc.contributor Cent Caribbean Marine Inst WHALAN, STEVE WAHAB, MUHAMMAD AZMI ABDUL DE NYS, ROCKY HOLZMAN, ROSS SCHNEIDER, CAROLINE LUISE 2017-08-06T18:56:39Z 2017-08-06T18:56:39Z 2019-07-08T02:11:30Z 2017-08-06T18:56:39Z 2017-08-06T18:56:39Z 2019-07-08T02:11:30Z 2017-01-01
dc.identifier.citation Abdul Wahab MA, de Nys R, Holzman R, Schneider CL, Whalan S (2017) Patterns of reproduction in two co-occurring Great Barrier Reef sponges. Marine and Freshwater Research 68(7): 1233-1244
dc.identifier.issn 1323-1650
dc.description.abstract Reproduction is a key biological process that underpins the persistence and maintenance of populations. However, information on the reproductive biology of Great Barrier Reef (GBR) sponges is depauperate. The present study established the reproductive biology of two co-occurring GBR sponges, namely Ianthella basta (Verongida) and Ircinia sp. (Dictyoceratida). Sponges were haphazardly sampled (monthly) over a period of 1 year. Histological analysis of samples established the sexuality, development, seasonality, gametogenesis and fecundity of the two species, as well as the effects of temperature on reproduction. I. basta is oviparous, whereas Ircinia sp. is viviparous. The mode of sexuality in I. basta could not be determined, because male propagules were not detected, whereas Ircinia sp. is a simultaneous hermaphrodite. Reproduction in I. basta is unique within the verongids and co-occurring oviparous species, with peak reproduction occurring at the minimum annual temperature (23 degrees C) and spawning occurring as the temperature increased above 23.4 degrees C. Reproduction in Ircinia sp. corresponded to patterns reported for other viviparous GBR species, with an increase in reproductive propagules, peak sperm release, fertilisation and spawning occurring at temperatures above 25 degrees C. Fecundity in I. basta and Ircinia sp. is high compared with other sponge species in the region, which may contribute to their apparent abundance on the GBR.
dc.description.sponsorship The authors thank their field assistants for supporting the collection of sponge samples over the period of this study and the staff of Orpheus Island Research Station for field and logistical support. The authors thank S. Reilly for expertise on histological techniques. M. A. Abdul Wahab was supported by a James Cook University Postgraduate Research Scholarship (JCUPRS) and the Australian Institute of Marine Science at James Cook University scholarship (AIMS@JCU). This study was funded through an Australian Research Council linkage Grant with Reef HQ (LP0990664).
dc.language English
dc.subject Temperature
dc.subject Ecology
dc.subject Fisheries
dc.subject Coral-reefs
dc.subject Rhopaloeides-odorabile
dc.subject Ianthella-basta
dc.subject Phenology
dc.subject Australia
dc.subject Marine Sponges
dc.subject Ianthella Basta
dc.subject Limnology
dc.subject Ircinia Sp.
dc.subject Sexual Reproduction
dc.subject Porifera
dc.subject Marine & Freshwater Biology
dc.subject Demospongiae
dc.subject Oceanography
dc.subject Population Dynamics
dc.subject Seasonal Reproduction
dc.title Patterns of reproduction in two co-occurring Great Barrier Reef sponges
dc.type journal article
dc.identifier.doi 10.1071/MF16272
dc.identifier.wos WOS:000404481900004

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