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Title: Quantification of coral sperm collected during a synchronous spawning event
Authors: Teo, A 
Guest, J.R
Neo, M.L 
Vicentuan, K 
Todd, P.A 
Keywords: Article
Echinophyllia aspera
Favites abdita
Favites chinensis
Merulina ampliata
Merulina scabricula
Platygyra pini
semen analysis
Issue Date: 2016
Citation: Teo, A, Guest, J.R, Neo, M.L, Vicentuan, K, Todd, P.A (2016). Quantification of coral sperm collected during a synchronous spawning event. PeerJ 2016 (7) : e2180. ScholarBank@NUS Repository.
Abstract: Most studies of coral reproductive biology to date have focused on oocyte numbers and sizes. Only one (ex situ) study has enumerated sperm numbers, even though these data have multiple potential applications. We quantified total coral sperm and eggs per gamete bundle collected from six species in situ during a synchronous spawning event in Singapore. Egg-sperm bundles were captured midwater as they floated towards the surface after being released by the colony. For each sample, a semitransparent soft plastic bottle was squeezed and released to create a small suction force that was used to 'catch' the bundles. This technique provided several advantages over traditional methods, including low cost, ease of use, no diving prior to the night of collection needed, and the ability to target specific areas of the colony. The six species sampled were Echinophyllia aspera, Favites abdita, F. chinensis, Merulina ampliata, M. scabricula and Platygyra pini. The mean number of sperm packaged within one egg-sperm bundle ranged from 2.04 × 106 to 1.93 × 107. The mean number of eggs per egg-sperm bundle ranged from26.67 (SE ± 3.27) to 85.33 (SE ± 17.79). These data are critical for fertilisation success models, but the collection technique described could also be applied to studies requiring in situ spawning data at the polyp level. © 2016 Teo et al.
Source Title: PeerJ
ISSN: 2167-8359
DOI: 10.7717/peerj.2180
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