1
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Shikina S, Tsai PH, Chiu YL, Chang CF. The stony coral Fimbriaphyllia (Euphyllia) ancora's reproductive strategy involves a sex change every year. Commun Biol 2024; 7:1093. [PMID: 39237739 PMCID: PMC11377712 DOI: 10.1038/s42003-024-06799-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 08/28/2024] [Indexed: 09/07/2024] Open
Abstract
A sex change phenomenon was reported in some free-living, non-sessile coral species of the Family Fungiidae. However, there are no reports describing sex change in sessile colonial species. Timing and cellular processes of sex change are also unclear in corals. Here, we report sex change of the colonial coral, Fimbriaphyllia ancora, and its cellular process. Of 26 colonies monitored at Nanwan Bay, southern Taiwan, about 70% changed their sex every year after annual spawning for least 3-4 consecutive years, i.e., colonies that were male two years ago became female last year, and male again this year. The remaining 30% were permanently male or female. Sex-change and non-sex-change colonies grew in close proximity or even side-by-side. No significant differences were found in colony size between sex-change and non-sex-change colonies. Histological analysis showed that, in female-to-male sex change, small oocytes were present up to 3 months in some gonads after spawning and disappeared by 5 months. This suggests that sex change occurred 4-5 months after spawning. In contrast, in male-to-female sex change, oocytes appeared weeks after sperm release and in most gonads by 3 months, suggesting that male-to-female sex change occurred 0-3 months after sperm release.
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Affiliation(s)
- Shinya Shikina
- Institute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung, Taiwan.
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan.
| | - Pin-Hsuan Tsai
- Institute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung, Taiwan
| | - Yi-Ling Chiu
- Institute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung, Taiwan
| | - Ching-Fong Chang
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
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2
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Morita M, Hanahara N, Teramoto MM, Tarigan AI. Conservation of Protein Kinase A Substrates in the Cnidarian Coral Spermatozoa Among Animals and Their Molecular Evolution. J Mol Evol 2024; 92:217-257. [PMID: 38662235 DOI: 10.1007/s00239-024-10168-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/26/2024] [Indexed: 04/26/2024]
Abstract
The coral Acropora spp., known for its reef-building abilities, is a simultaneous hermaphroditic broadcast spawning species. Acropora spp. release gametes into seawater, activating sperm motility. This activation is mediated by adenylyl cyclase (AC) and protein kinase A (PKA). Notably, membrane-permeable cAMP (8-bromo-cAMP) promotes sperm motility activation of Acropora florida. While the signal transduction for PKA-dependent motility activation is highly conserved among animals, the downstream signaling of PKA remains unclear. In this study, we used mass spectrometry (MS) analyses to identify sperm proteins in the coral Acropora digitifera, as well as the serine/threonine residues of potential PKA substrates, and then, we investigated the conservation of these proteins from corals to vertebrates. We identified 148 sperm proteins of A. digitifera with typical PKA recognition motifs, namely RRXT and RRXS. We subsequently used ORTHOSCOPE to screen for orthologs encoding these 148 proteins from corals to vertebrates. Among the isolated orthologs, we identified positive selection in 48 protein-encoding genes from 18 Acropora spp. Subsequently, we compared the conservation rates of the PKA phosphorylation motif residues between the orthologs under positive and purifying selections. Notably, the serine residues of the orthologs under positive selection were more conserved. Therefore, adaptive evolution might have occurred in the orthologs of PKA substrate candidates from corals to vertebrates, accompanied by phosphorylation residue conservation. Collectively, our findings suggest that while PKA signal transduction, including substrates in sperm, may have been conserved, the substrates may have evolved to adapt to diverse fertilization conditions, such as synchronous broadcast spawning.
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Affiliation(s)
- Masaya Morita
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, 905-0227, Japan.
| | - Nozomi Hanahara
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, 905-0227, Japan
- Okinawa Churahima Foundation, 888 Ishikawa, Motobu, Okinawa, 905-0206, Japan
| | - Mariko M Teramoto
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, 905-0227, Japan
| | - Ariyo Imanuel Tarigan
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, 905-0227, Japan
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3
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Solar radiation, temperature and the reproductive biology of the coral Lobactis scutaria in a changing climate. Sci Rep 2023; 13:246. [PMID: 36604569 PMCID: PMC9816315 DOI: 10.1038/s41598-022-27207-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 12/28/2022] [Indexed: 01/07/2023] Open
Abstract
Coral reefs worldwide are at risk due to climate change. Coral bleaching is becoming increasingly common and corals that survive bleaching events can suffer from temporary reproductive failure for several years. While water temperature is a key driver in causing coral bleaching, other environmental factors are involved, such as solar radiation. We investigated the individual and combined effects of temperature, photosynthetically active radiation (PAR), and ultraviolet radiation (UVR) on the spawning patterns and reproductive physiology of the Hawaiian mushroom coral Lobactis scutaria, using long-term experiments in aquaria. We examined effects on spawning timing, fertilisation success, and gamete physiology. Both warmer temperatures and filtering UVR altered the timing of spawning. Warmer temperatures caused a drop in fertilisation success. Warmer temperatures and higher PAR both negatively affected sperm and egg physiology. These results are concerning for the mushroom coral L. scutaria and similar reproductive data are urgently needed to predict future reproductive trends in other species. Nonetheless, thermal stress from global climate change will need to be adequately addressed to ensure the survival of reef-building corals in their natural environment throughout the next century and beyond. Until then, reproduction is likely to be increasingly impaired in a growing number of coral species.
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4
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Grinblat M, Cooke I, Shlesinger T, Ben-Zvi O, Loya Y, Miller DJ, Cowman PF. Biogeography, reproductive biology and phylogenetic divergence within the Fungiidae (mushroom corals). Mol Phylogenet Evol 2021; 164:107265. [PMID: 34274488 DOI: 10.1016/j.ympev.2021.107265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 11/15/2022]
Abstract
While the escalating impacts of climate change and other anthropogenic pressures on coral reefs are well documented at the coral community level, studies of species-specific trends are less common, owing mostly to the difficulties and uncertainties in delineating coral species. It has also become clear that traditional coral taxonomy based largely on skeletal macromorphology has underestimated the diversity of many coral families. Here, we use targeted enrichment methods to sequence 2476 ultraconserved elements (UCEs) and exonic loci to investigate the relationship between populations of Fungia fungites from Okinawa, Japan, where this species reproduces by brooding (i.e., internal fertilization), and Papua New Guinea and Australia, where it reproduces by broadcast-spawning (i.e., external fertilization). Moreover, we analyzed the relationships between populations of additional fungiid species (Herpolitha limax and Ctenactis spp.) that reproduce only by broadcast-spawning. Our phylogenetic and species delimitation analyses reveal strong biogeographic structuring in both F. fungites and Herpolitha limax, consistent with cryptic speciation in Okinawa in both species and additionally for H. limax in the Red Sea. By combining UCE/exon data and mitochondrial sequences captured in off-target reads, we reinforce earlier findings that Ctenactis, a genus consisting of three nominal morphospecies, is not a natural group. Our results highlight the need for taxonomic and systematic re-evaluations of some species and genera within the family Fungiidae. This work demonstrates that sequence data generated by the application of targeted capture methods can provide objective criteria by which we can test phylogenetic hypotheses based on morphological and/or life history traits.
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Affiliation(s)
- Mila Grinblat
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia; Centre for Tropical Bioinformatics and Molecular Biology, James Cook University, Townsville, Queensland, Australia.
| | - Ira Cooke
- Centre for Tropical Bioinformatics and Molecular Biology, James Cook University, Townsville, Queensland, Australia.
| | - Tom Shlesinger
- Institute for Global Ecology, Florida Institute of Technology, Melbourne, FL, USA
| | - Or Ben-Zvi
- School of Zoology, Tel-Aviv University, Tel-Aviv, Israel; The Interuniversity Institute for Marine Sciences in Eilat, Eilat, Israel
| | - Yossi Loya
- School of Zoology, Tel-Aviv University, Tel-Aviv, Israel
| | - David J Miller
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia; Centre for Tropical Bioinformatics and Molecular Biology, James Cook University, Townsville, Queensland, Australia.
| | - Peter F Cowman
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia; Centre for Tropical Bioinformatics and Molecular Biology, James Cook University, Townsville, Queensland, Australia; Biodiversity and Geosciences Program, Museum of Tropical Queensland, Queensland Museum, Townsville, Queensland, Australia.
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5
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Baird AH, Guest JR, Edwards AJ, Bauman AG, Bouwmeester J, Mera H, Abrego D, Alvarez-Noriega M, Babcock RC, Barbosa MB, Bonito V, Burt J, Cabaitan PC, Chang CF, Chavanich S, Chen CA, Chen CJ, Chen WJ, Chung FC, Connolly SR, Cumbo VR, Dornelas M, Doropoulos C, Eyal G, Eyal-Shaham L, Fadli N, Figueiredo J, Flot JF, Gan SH, Gomez E, Graham EM, Grinblat M, Gutiérrez-Isaza N, Harii S, Harrison PL, Hatta M, Ho NAJ, Hoarau G, Hoogenboom M, Howells EJ, Iguchi A, Isomura N, Jamodiong EA, Jandang S, Keyse J, Kitanobo S, Kongjandtre N, Kuo CY, Ligson C, Lin CH, Low J, Loya Y, Maboloc EA, Madin JS, Mezaki T, Min C, Morita M, Moya A, Neo SH, Nitschke MR, Nojima S, Nozawa Y, Piromvaragorn S, Plathong S, Puill-Stephan E, Quigley K, Ramirez-Portilla C, Ricardo G, Sakai K, Sampayo E, Shlesinger T, Sikim L, Simpson C, Sims CA, Sinniger F, Spiji DA, Tabalanza T, Tan CH, Terraneo TI, Torda G, True J, Tun K, Vicentuan K, Viyakarn V, Waheed Z, Ward S, Willis B, Woods RM, Woolsey ES, Yamamoto HH, Yusuf S. An Indo-Pacific coral spawning database. Sci Data 2021; 8:35. [PMID: 33514754 PMCID: PMC7846567 DOI: 10.1038/s41597-020-00793-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 11/19/2020] [Indexed: 01/30/2023] Open
Abstract
The discovery of multi-species synchronous spawning of scleractinian corals on the Great Barrier Reef in the 1980s stimulated an extraordinary effort to document spawning times in other parts of the globe. Unfortunately, most of these data remain unpublished which limits our understanding of regional and global reproductive patterns. The Coral Spawning Database (CSD) collates much of these disparate data into a single place. The CSD includes 6178 observations (3085 of which were unpublished) of the time or day of spawning for over 300 scleractinian species in 61 genera from 101 sites in the Indo-Pacific. The goal of the CSD is to provide open access to coral spawning data to accelerate our understanding of coral reproductive biology and to provide a baseline against which to evaluate any future changes in reproductive phenology.
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Affiliation(s)
- Andrew H. Baird
- grid.1011.10000 0004 0474 1797ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - James R. Guest
- grid.1006.70000 0001 0462 7212School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU United Kingdom
| | - Alasdair J. Edwards
- grid.1006.70000 0001 0462 7212School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU United Kingdom
| | - Andrew G. Bauman
- grid.4280.e0000 0001 2180 6431Experimental Marine Ecology Laboratory, Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, 117558 Singapore, Singapore
| | - Jessica Bouwmeester
- grid.410445.00000 0001 2188 0957Smithsonian Conservation Biology Institute, Smithsonian Institution, Hawai’i Institute of Marine Biology, 46-007 Lilipuna Rd, Kaneohe, Hawaii 96744 USA
| | - Hanaka Mera
- grid.1011.10000 0004 0474 1797ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - David Abrego
- grid.1031.30000000121532610National Marine Science Centre, Southern Cross University, 2 Bay Drive, Coffs Harbour, New South Wales 2450 Australia
| | - Mariana Alvarez-Noriega
- grid.1011.10000 0004 0474 1797ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - Russel C. Babcock
- grid.1016.60000 0001 2173 2719Oceans and Atmosphere, CSIRO, Queensland Biosciences Precinct, 306 Carmody Rd, St Lucia, Queensland 4072 Australia
| | - Miguel B. Barbosa
- grid.11914.3c0000 0001 0721 1626School of Biology, University of St Andrews, Sir Harold Mitchell Building, St Andrews, KY16 9TH United Kingdom
| | - Victor Bonito
- Reef Explorer Fiji, Coral Coast Conservation Center, Votua Village, Korolevu, Nadroga Fiji
| | - John Burt
- grid.440573.1Center for Genomics and Systems Biology, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE
| | - Patrick C. Cabaitan
- grid.11159.3d0000 0000 9650 2179Marine Science Institute, College of Science, University of the Philippines, Velasquez Street, Diliman, Quezon City, Manila, 1101 Philippines
| | - Ching-Fong Chang
- grid.260664.00000 0001 0313 3026Aquaculture, National Taiwan Ocean University, 2 Beining Rd, Keelung, 20224 Taiwan
| | - Suchana Chavanich
- grid.7922.e0000 0001 0244 7875Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Phayathai Road, Bangkok, 10330 Thailand
| | - Chaolun A. Chen
- grid.506939.0Biodiversity Research Center, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529 Taiwan
| | - Chieh-Jhen Chen
- grid.260664.00000 0001 0313 3026Center of Excellence for the Oceans, National Taiwan Ocean University, 2 Beining Rd, Keelung, 20224 Taiwan
| | - Wei-Jen Chen
- grid.260664.00000 0001 0313 3026Center of Excellence for the Oceans, National Taiwan Ocean University, 2 Beining Rd, Keelung, 20224 Taiwan
| | - Fung-Chen Chung
- Reef Guardian Sdn. Bhd., Bandar Tyng, Mile 6, North Road, Sandakan, Sabah 90000 Malaysia
| | - Sean R. Connolly
- grid.438006.90000 0001 2296 9689Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Republic of Panama
| | - Vivian R. Cumbo
- grid.1004.50000 0001 2158 5405Department of Biological Sciences, Macquarie University, Macquarie Park, New South Wales 2109 Australia
| | - Maria Dornelas
- grid.11914.3c0000 0001 0721 1626Centre for Biological Diversity, University of St Andrews, St Andrews, KY16 9TH United Kingdom
| | - Christopher Doropoulos
- grid.1016.60000 0001 2173 2719Oceans and Atmosphere, CSIRO, Queensland Biosciences Precinct, 306 Carmody Rd, St Lucia, Queensland 4072 Australia
| | - Gal Eyal
- grid.1003.20000 0000 9320 7537ARC Centre of Excellence for Coral Reef Studies, The University of Queensland, St Lucia, Queensland 4072 Australia
| | - Lee Eyal-Shaham
- grid.22098.310000 0004 1937 0503The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, 5290002 Israel
| | - Nur Fadli
- grid.440768.90000 0004 1759 6066Faculty of Marine Science and Fisheries, Syiah Kuala University, Banda Aceh, Aceh Indonesia
| | - Joana Figueiredo
- grid.261241.20000 0001 2168 8324Halmos College of Natural Sciences and Oceanography, Department of Marine and Environmental Science, Nova Southeastern University, 8000 N Ocean Drive, Dania Beach, Florida 33004 USA
| | - Jean-François Flot
- grid.4989.c0000 0001 2348 0746Evolutionary Biology and Ecology, Université libre de Bruxelles, Brussels, B-1050 Belgium
| | - Sze-Hoon Gan
- grid.265727.30000 0001 0417 0814Endangered Marine Species Research Unit, Borneo Marine Research Institute, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu, Sabah 88400 Malaysia
| | - Elizabeth Gomez
- grid.11159.3d0000 0000 9650 2179Marine Science Institute, College of Science, University of the Philippines, Velasquez Street, Diliman, Quezon City, Manila, 1101 Philippines
| | - Erin M. Graham
- grid.1011.10000 0004 0474 1797eResearch Centre, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - Mila Grinblat
- grid.1011.10000 0004 0474 1797ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia ,grid.1011.10000 0004 0474 1797Molecular & Cell biology, College of Public Health, Medical & Vet Sciences, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - Nataly Gutiérrez-Isaza
- grid.1003.20000 0000 9320 7537ARC Centre of Excellence for Coral Reef Studies, The University of Queensland, St Lucia, Queensland 4072 Australia ,grid.1003.20000 0000 9320 7537School of Biological Sciences, The University of Queensland, St Lucia, Queensland 4072 Australia
| | - Saki Harii
- grid.267625.20000 0001 0685 5104Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa, 905-0227 Japan
| | - Peter L. Harrison
- grid.1031.30000000121532610Marine Ecology Research Centre, Southern Cross University, PO Box 157, Lismore, NSW 2480 Australia
| | - Masayuki Hatta
- grid.412314.10000 0001 2192 178XDepartment of Biology, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610 Japan
| | - Nina Ann Jin Ho
- grid.503008.eChina-ASEAN College of Marine Sciences, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, Sepang Selangor, Darul Ehsan, 43900 Malaysia
| | - Gaetan Hoarau
- 12 Rue Caumont, Saint-Pierre Reunion Island, 97410 France
| | - Mia Hoogenboom
- grid.1011.10000 0004 0474 1797ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - Emily J. Howells
- grid.1007.60000 0004 0486 528XCentre for Sustainable Ecosystem Solutions and School of Earth, Atmospheric and Life Sciences, University of Wollongong, Northfields Avenue, Wollongong, New South Wales 2522 Australia
| | - Akira Iguchi
- grid.466781.a0000 0001 2222 3430Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8567 Japan
| | - Naoko Isomura
- grid.471922.b0000 0004 4672 6261Department of Bioresources Engineering, National Institute of Technology, Okinawa College, 905 Henoko, Nago, Okinawa, 905-2192 Japan
| | - Emmeline A. Jamodiong
- grid.267625.20000 0001 0685 5104Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa 902-0213 Japan
| | - Suppakarn Jandang
- grid.7922.e0000 0001 0244 7875Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Phayathai Road, Bangkok, 10330 Thailand
| | - Jude Keyse
- Glenala State High School, Durack, Queensland 4077 Australia
| | - Seiya Kitanobo
- grid.267625.20000 0001 0685 5104Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa, 905-0227 Japan
| | - Narinratana Kongjandtre
- grid.411825.b0000 0000 9482 780XAquatic Science, Faculty of Science, Burapha University, 169 LongHaad Bangsaen Rd, Saensook, Mueang Chonburi 20131 Thailand
| | - Chao-Yang Kuo
- grid.506939.0Biodiversity Research Center, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529 Taiwan
| | - Charlon Ligson
- grid.11159.3d0000 0000 9650 2179Marine Science Institute, College of Science, University of the Philippines, Velasquez Street, Diliman, Quezon City, Manila, 1101 Philippines
| | - Che-Hung Lin
- grid.506939.0Biodiversity Research Center, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529 Taiwan
| | - Jeffrey Low
- Coastal and Marine Branch, National Biodiversity Centre, National Parks Board, 1 Cluny Road, Singapore, Singapore
| | - Yossi Loya
- grid.12136.370000 0004 1937 0546School of Zoology, Tel-Aviv University, Ramat Aviv, 6997801 Israel
| | - Elizaldy A. Maboloc
- grid.24515.370000 0004 1937 1450Department of Ocean Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Joshua S. Madin
- grid.410445.00000 0001 2188 0957Hawai’i Institute of Marine Biology, University of Hawaii at Manoa, 46-007 Lilipuna Rd, Kaneohe, Hawaii 96744 USA
| | - Takuma Mezaki
- Kuroshio Biological Research Foundation, 560 Nishidomari, Otsuki Town, Hata Kochi, 788-0333 Japan
| | - Choo Min
- grid.4280.e0000 0001 2180 6431Reef Ecology Lab, Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, 117558 Singapore, Singapore
| | - Masaya Morita
- grid.267625.20000 0001 0685 5104Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa, 905-0227 Japan
| | - Aurelie Moya
- grid.1011.10000 0004 0474 1797ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - Su-Hwei Neo
- grid.4280.e0000 0001 2180 6431Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, 117558 Singapore, Singapore
| | - Matthew R. Nitschke
- grid.267827.e0000 0001 2292 3111School of Biological Sciences, Victoria University of Wellington, Wellington, 2820 New Zealand
| | | | - Yoko Nozawa
- grid.506939.0Biodiversity Research Center, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529 Taiwan
| | | | - Sakanan Plathong
- grid.7130.50000 0004 0470 1162Department of Biology, Faculty of Science, Prince of Songkla University, 15 Karnjanavanich Rd, Hat Yai, 90110 Thailand
| | | | - Kate Quigley
- grid.1046.30000 0001 0328 1619Australian Institute of Marine Science, PMB 3, Townsville, Queensland 4810 Australia
| | - Catalina Ramirez-Portilla
- grid.4989.c0000 0001 2348 0746Evolutionary Biology and Ecology, Université libre de Bruxelles, Brussels, B-1050 Belgium
| | - Gerard Ricardo
- grid.1046.30000 0001 0328 1619Australian Institute of Marine Science, PMB 3, Townsville, Queensland 4810 Australia
| | - Kazuhiko Sakai
- grid.267625.20000 0001 0685 5104Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa, 905-0227 Japan
| | - Eugenia Sampayo
- grid.1003.20000 0000 9320 7537ARC Centre of Excellence for Coral Reef Studies, The University of Queensland, St Lucia, Queensland 4072 Australia ,grid.1003.20000 0000 9320 7537School of Biological Sciences, The University of Queensland, St Lucia, Queensland 4072 Australia
| | - Tom Shlesinger
- grid.255966.b0000 0001 2229 7296Institute for Global Ecology, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901-6988 USA
| | - Leony Sikim
- Reef Guardian Sdn. Bhd., Bandar Tyng, Mile 6, North Road, Sandakan, Sabah 90000 Malaysia
| | - Chris Simpson
- 25 Mettam Street, Trigg, Western Australia 6029 Australia
| | - Carrie A. Sims
- grid.1003.20000 0000 9320 7537ARC Centre of Excellence for Coral Reef Studies, The University of Queensland, St Lucia, Queensland 4072 Australia ,grid.1003.20000 0000 9320 7537School of Biological Sciences, The University of Queensland, St Lucia, Queensland 4072 Australia
| | - Frederic Sinniger
- grid.267625.20000 0001 0685 5104Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa, 905-0227 Japan
| | - Davies A. Spiji
- Reef Guardian Sdn. Bhd., Bandar Tyng, Mile 6, North Road, Sandakan, Sabah 90000 Malaysia
| | - Tracy Tabalanza
- grid.11159.3d0000 0000 9650 2179Marine Science Institute, College of Science, University of the Philippines, Velasquez Street, Diliman, Quezon City, Manila, 1101 Philippines
| | - Chung-Hong Tan
- grid.412255.50000 0000 9284 9319Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu 21030 Malaysia
| | - Tullia I. Terraneo
- grid.45672.320000 0001 1926 5090Red Sea Research Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900 Saudi Arabia
| | - Gergely Torda
- grid.1011.10000 0004 0474 1797ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - James True
- grid.419784.70000 0001 0816 7508Faculty of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Rd, Ladkrabang, Bangkok 10520 Thailand
| | - Karenne Tun
- Coastal and Marine Branch, National Biodiversity Centre, National Parks Board, 1 Cluny Road, Singapore, Singapore
| | - Kareen Vicentuan
- grid.4280.e0000 0001 2180 6431Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, 119227 Singapore, Singapore
| | - Voranop Viyakarn
- grid.7922.e0000 0001 0244 7875Reef Biology Research Group, Department of Marine Science, Faculty of Science, Chulalongkorn University, Phayathai Road, Bangkok, 10330 Thailand
| | - Zarinah Waheed
- grid.265727.30000 0001 0417 0814Endangered Marine Species Research Unit, Borneo Marine Research Institute, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu, Sabah 88400 Malaysia
| | - Selina Ward
- grid.1003.20000 0000 9320 7537ARC Centre of Excellence for Coral Reef Studies, The University of Queensland, St Lucia, Queensland 4072 Australia ,grid.1003.20000 0000 9320 7537School of Biological Sciences, The University of Queensland, St Lucia, Queensland 4072 Australia
| | - Bette Willis
- grid.1011.10000 0004 0474 1797ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia ,grid.1011.10000 0004 0474 1797College of Science and Engineering, James Cook University, 1 James Cook Drive, Townsville, Queensland 4811 Australia
| | - Rachael M. Woods
- grid.1004.50000 0001 2158 5405Department of Biological Sciences, Macquarie University, Macquarie Park, New South Wales 2109 Australia
| | | | - Hiromi H. Yamamoto
- grid.505718.eOkinawa Churashima Research Center, Okinawa Churashima Foundation, 888 Ishikawa, Motobu, Okinawa, 905-0206 Japan
| | - Syafyudin Yusuf
- grid.412001.60000 0000 8544 230XFaculty of Marine Science and Fisheries, Hasanuddin University, Makassar, Indonesia
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Ng CSL, Huang D, Toh KB, Sam SQ, Kikuzawa YP, Toh TC, Taira D, Chan YKS, Hung LZT, Sim WT, Rashid AR, Afiq-Rosli L, Ng NK, Chou LM. Responses of urban reef corals during the 2016 mass bleaching event. MARINE POLLUTION BULLETIN 2020; 154:111111. [PMID: 32319927 DOI: 10.1016/j.marpolbul.2020.111111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/25/2020] [Accepted: 03/25/2020] [Indexed: 05/28/2023]
Abstract
Predicting the bleaching responses of corals is crucial in light of frequent heat stress events to manage further losses of biodiversity and ecosystem functioning, especially for reefs impacted by urbanisation. We examined if the coral cover and community at various Singapore sites changed during the 2016 global coral bleaching event. Bleaching prevalence varied widely among sites in June 2016, and was best explained by site and coral species. While some sites were minimally impacted, others registered significant decreases in coral cover and community changes persisting till March 2017, when normal colouration was mostly regained by corals. Bleaching susceptibility was associated with larger corallites in hermaphrodites and smaller corallites in gonochores (probably due to the cost of maintaining dual sexual functions in hermaphrodites), and with increasing proximity between polyps (likely because thermal damage would be less contained among polyps with greater physiological integration). However, bleaching resilience-the capacity to regain baseline pigmentation-was poorly explained by the traits studied. Our findings suggest that the interplay between local conditions and species composition strongly affects bleaching outcomes on urbanised reefs, and underscore the utility of coral traits for predicting bleaching responses to help in formulating appropriate management strategies.
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Affiliation(s)
- Chin Soon Lionel Ng
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117558; Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore.
| | - Danwei Huang
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117558; Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore
| | - Kok Ben Toh
- Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore; School of Natural Resources and Environment, University of Florida, 103 Black Hall, Gainsville, FL 32611, United States of America
| | - Shu Qin Sam
- Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore
| | - Yuichi Preslie Kikuzawa
- Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore
| | - Tai Chong Toh
- Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore; College of Alice and Peter Tan, National University of Singapore, 8 College Avenue East, 138615, Singapore
| | - Daisuke Taira
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117558; Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore
| | - Yong Kit Samuel Chan
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117558
| | - Ling Zi Tracy Hung
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117558
| | - Wan Ting Sim
- Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore
| | - Ahmad Rafiuddin Rashid
- Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore
| | - Lutfi Afiq-Rosli
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117558; Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore
| | - Ngan Kee Ng
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117558
| | - Loke Ming Chou
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117558; Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, 119223, Singapore
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7
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Chen CJ, Chen WJ, Shikina S, Denis V, Chang CF. The plasticity of gonad development of sexual reproduction in a scleractinian coral, Porites lichen. Gen Comp Endocrinol 2020; 285:113270. [PMID: 31525374 DOI: 10.1016/j.ygcen.2019.113270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 08/14/2019] [Accepted: 09/12/2019] [Indexed: 11/29/2022]
Abstract
Metazoans have evolved a complexity of sexual system and gonad development, however, sexual reproduction of scleractinian corals is not well understood. This study aimed to address the sexual system and gametogenesis in Porites lichen, a common species in the Indo-West Pacific. This study represents the first description of sexual system, which were determined by histological analysis of the samples collected in northern Taiwan. In addition, female and hermaphroditic colonies were separately cultured in aquarium to further monitor the release of eggs/larvae and thereby confirm the breeding system. The results demonstrate that P. lichen is a polygamodioecious brooder and displays seasonal gametogenesis and embryogenesis that ends in late summer. In hermaphroditic colonies, male polyps are predominant and hermaphroditic polyps make up a very small percent (1%-19.3%). In addition, two new gametogenic features were observed from the histological analysis: 1) oocytes developed within the spermaries in hermaphroditic polyps during the early stage of gametogenesis and 2) melanin granular cells were clustered in spermaries in both male and hermaphroditic colonies. This study demonstrated the plasticity of gametogenesis and melanin related cells appeared in corals, which provides an important information to explore hormones and molecular mechanism involving in gonadal arrangement and production of melanin for further studies.
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Affiliation(s)
- Chieh-Jhen Chen
- Institute of Oceanography, National Taiwan University, Taipei 10617, Taiwan; Department of Aquaculture, National Taiwan Ocean University, Keelung 20224, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Wei-Jen Chen
- Institute of Oceanography, National Taiwan University, Taipei 10617, Taiwan
| | - Shinya Shikina
- Institute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung 20224, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Vianney Denis
- Institute of Oceanography, National Taiwan University, Taipei 10617, Taiwan
| | - Ching-Fong Chang
- Department of Aquaculture, National Taiwan Ocean University, Keelung 20224, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan.
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8
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Repetitive sex change in the stony coral Herpolitha limax across a wide geographic range. Sci Rep 2019; 9:2936. [PMID: 30814532 PMCID: PMC6393666 DOI: 10.1038/s41598-018-37619-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 12/11/2018] [Indexed: 11/08/2022] Open
Abstract
Sex change has been widely studied in animals and plants. However, the conditions favoring sex change, its mode and timing remain poorly known. Here, for the first time in stony corals, we report on a protandrous (youngest individuals are males) repetitive sex change exhibited by the fungiid coral Herpolitha limax across large spatial scales (the coral reefs of Japan, Jordan and Israel) and temporal scales (2004-2017). In contrast to most corals, this species is a daytime spawner (08:00-10:00 AM) that spawned at the same time/same date across all the study sites. The sporadically scattered populations of H. limax among the coral reefs of Eilat (Israel) and Aqaba (Jordan) exhibited significantly slower growth, earlier sex change, and lower percentages of reproduction and sex change in comparison to the densely aggregated populations in Okinawa (Japan). At all sites, sex ratio varied among years, but was almost always biased towards maleness. Growth rate decreased with size. We conclude that comparable to dioecious plants that display labile sexuality in response to energetic and/or environmental constraints, the repetitive sex change displayed by H. limax increases its overall fitness reinforcing the important role of reproductive plasticity in the Phylum Cnidaria in determining their evolutionary success.
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9
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Variations of hydra reproductive strategies arising from its modular structure. Two aspects of the modular reproductive effect. Ecol Modell 2019. [DOI: 10.1016/j.ecolmodel.2018.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Sexual Reproduction of Scleractinian Corals in Mesophotic Coral Ecosystems vs. Shallow Reefs. CORAL REEFS OF THE WORLD 2019. [DOI: 10.1007/978-3-319-92735-0_35] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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11
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Olito C, Marshall DJ. Releasing small ejaculates slowly increases per-gamete fertilization success in an external fertilizer: Galeolaria caespitosa (Polychaeta: Serpulidae). J Evol Biol 2018; 32:177-186. [PMID: 30461107 DOI: 10.1111/jeb.13403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 11/09/2018] [Accepted: 11/12/2018] [Indexed: 11/28/2022]
Abstract
The idea that male reproductive strategies evolve primarily in response to sperm competition is almost axiomatic in evolutionary biology. However, externally fertilizing species, especially broadcast spawners, represent a large and taxonomically diverse group that have long challenged predictions from sperm competition theory-broadcast spawning males often release sperm slowly, with weak resource-dependent allocation to ejaculates despite massive investment in gonads. One possible explanation for these counter-intuitive patterns is that male broadcast spawners experience strong natural selection from the external environment during sperm dispersal. Using a manipulative experiment, we examine how male reproductive success in the absence of sperm competition varies with ejaculate size and rate of sperm release, in the broadcast spawning marine invertebrate Galeolaria caespitosa (Polychaeta: Serpulidae). We find that the benefits of Fast or Slow sperm release depend strongly on ejaculate size, but also that the per-gamete fertilization rate decreases precipitously with ejaculate size. Overall, these results suggest that, if males can facultatively adjust ejaculate size, they should slowly release small amounts of sperm. Recent theory for broadcast spawners predicts that sperm competition can also select for Slow release rates. Taken together, our results and theory suggest that selection often favours Slow ejaculate release rates whether males experience sperm competition or not.
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Affiliation(s)
- Colin Olito
- Centre for Geometric Biology, School of Biological Sciences, Monash University, Clayton, Victoria, Australia
| | - Dustin J Marshall
- Centre for Geometric Biology, School of Biological Sciences, Monash University, Clayton, Victoria, Australia
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12
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Shlesinger T, Grinblat M, Rapuano H, Amit T, Loya Y. Can mesophotic reefs replenish shallow reefs? Reduced coral reproductive performance casts a doubt. Ecology 2018; 99:421-437. [PMID: 29205289 DOI: 10.1002/ecy.2098] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/12/2017] [Accepted: 11/17/2017] [Indexed: 01/24/2023]
Abstract
Mesophotic coral ecosystems (i.e., deep coral reefs at 30-120 m depth) appear to be thriving while many shallow reefs in the world are declining. Amid efforts to understand and manage their decline, it was suggested that mesophotic reefs might serve as natural refuges and a possible source of propagules for the shallow reefs. However, our knowledge of how reproductive performance of corals alters with depth is sparse. Here, we present a comprehensive study of the reproductive phenology, fecundity, and abundance of seven reef-building conspecific corals in shallow and mesophotic habitats. Significant differences were found in the synchrony and timing of gametogenesis and spawning between shallow and mesophotic coral populations. Thus, mesophotic populations exhibited delayed or protracted spawning events, which led to spawning of the mesophotic colonies in large proportions at times where the shallow ones had long been depleted of reproductive material. All species investigated demonstrated a substantial reduction in fecundity and/or oocyte sizes at mesophotic depths (40-60 m). Two species (Seriatopora hystrix and Galaxea fascicularis) displayed a reduction in both fecundity and oocyte size at mesophotic depths. Turbinaria reniformis had only reduced fecundity and Acropora squarrosa and Acropora valida only reduced oocyte size. In Montipora verrucosa, reduced fecundity was found during one annual reproductive season while, in the following year, only reduced oocyte size was found. In contrast, reduced oocyte size in mesophotic populations of Acropora squarrosa was consistent along three studied years. One species, Acropora pharaonis, was found to be infertile at mesophotic depths along two studied years. This indicates that reproductive performance decreases with depth; and that although some species are capable of reproducing at mesophotic depths, their contribution to the replenishment of shallow reefs may be inconsequential. Reduced reproductive performance with depth, combined with the possible narrower tolerance to environmental factors, further suggests that mesophotic corals may in fact be more vulnerable than previously conceived. Furthermore, we posit that the observed temporal segregation in reproduction could lead to assortative mating, and this, in turn, may facilitate adaptive divergence across depth.
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Affiliation(s)
- Tom Shlesinger
- The George S. Wise Faculty of Life Sciences, School of Zoology, Tel-Aviv University, Tel-Aviv, 69978, Israel
| | - Mila Grinblat
- The George S. Wise Faculty of Life Sciences, School of Zoology, Tel-Aviv University, Tel-Aviv, 69978, Israel
| | - Hanna Rapuano
- The George S. Wise Faculty of Life Sciences, School of Zoology, Tel-Aviv University, Tel-Aviv, 69978, Israel
| | - Tal Amit
- The George S. Wise Faculty of Life Sciences, School of Zoology, Tel-Aviv University, Tel-Aviv, 69978, Israel.,The School of Marine Sciences, Ruppin Academic Center, Michmoret, 40297, Israel
| | - Yossi Loya
- The George S. Wise Faculty of Life Sciences, School of Zoology, Tel-Aviv University, Tel-Aviv, 69978, Israel
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13
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Russell JJ, Theriot JA, Sood P, Marshall WF, Landweber LF, Fritz-Laylin L, Polka JK, Oliferenko S, Gerbich T, Gladfelter A, Umen J, Bezanilla M, Lancaster MA, He S, Gibson MC, Goldstein B, Tanaka EM, Hu CK, Brunet A. Non-model model organisms. BMC Biol 2017; 15:55. [PMID: 28662661 PMCID: PMC5492503 DOI: 10.1186/s12915-017-0391-5] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Model organisms are widely used in research as accessible and convenient systems to study a particular area or question in biology. Traditionally only a handful of organisms have been widely studied, but modern research tools are enabling researchers to extend the set of model organisms to include less-studied and more unusual systems. This Forum highlights a range of 'non-model model organisms' as emerging systems for tackling questions across the whole spectrum of biology (and beyond), the opportunities and challenges, and the outlook for the future.
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Affiliation(s)
- James J Russell
- Department of Biology, Howard Hughes Medical Institute Stanford University, Stanford, CA, 94305, USA
| | - Julie A Theriot
- Departments of Biochemistry and of Microbiology & Immunology, Howard Hughes Medical Institute Stanford University, Stanford, CA, 94305, USA.
| | - Pranidhi Sood
- Department of Biochemistry & Biophysics, University of California San Francisco, 600 16th St, San Francisco, CA, 94158, USA
| | - Wallace F Marshall
- Department of Biochemistry & Biophysics, University of California San Francisco, 600 16th St, San Francisco, CA, 94158, USA.
| | - Laura F Landweber
- Departments of Biochemistry & Molecular Biophysics and Biological Sciences, Columbia University, New York, NY, 10032, USA
| | | | - Jessica K Polka
- Visiting Scholar, Whitehead Institute, 9 Cambridge Center, Cambridge, MA, 02142, USA
| | - Snezhana Oliferenko
- The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Randall Division of Cell and Molecular Biophysics, New Hunt's House, Guy's Campus, King's College London, London, SE1 1UL, UK
| | - Therese Gerbich
- 516 Fordham Hall, University of North Carolina Chapel Hill, Chapel Hill, NC, 27514, USA
| | - Amy Gladfelter
- 516 Fordham Hall, University of North Carolina Chapel Hill, Chapel Hill, NC, 27514, USA
| | - James Umen
- Donald Danforth Plant Science Center, 975 N. Warson Rd, St. Louis, MO, 63132, USA
| | | | - Madeline A Lancaster
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, CB2 0QH, Cambridge, UK
| | - Shuonan He
- Stowers Institute for Medical Research, Kansas City, MO, 64110, USA
| | - Matthew C Gibson
- Stowers Institute for Medical Research, Kansas City, MO, 64110, USA
- Department of Anatomy and Cell Biology, The University of Kansas School of Medicine, Kansas City, KS, 66160, USA
| | - Bob Goldstein
- Biology Department, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Elly M Tanaka
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus Vienna Biocenter 1, 1030, Vienna, Austria
| | - Chi-Kuo Hu
- Department of Genetics, Stanford University, Stanford, CA, 94305, USA
| | - Anne Brunet
- Department of Genetics, Stanford University, Stanford, CA, 94305, USA
- Glenn Laboratories for the Biology of Aging at Stanford, Stanford, CA, 94305, USA
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14
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Rapuano H, Brickner I, Shlesinger T, Meroz-Fine E, Tamir R, Loya Y. Reproductive strategies of the coral Turbinaria reniformis in the northern Gulf of Aqaba (Red Sea). Sci Rep 2017; 7:42670. [PMID: 28195203 PMCID: PMC5307385 DOI: 10.1038/srep42670] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 01/13/2017] [Indexed: 02/07/2023] Open
Abstract
Here we describe for the first time the reproductive biology of the scleractinian coral Turbinaria reniformis studied during three years at the coral reefs of Eilat and Aqaba. We also investigated the possibility of sex change in individually tagged colonies followed over a period of 12 years. T. reniformis was found to be a stable gonochorist (no detected sex change) that reproduces by broadcast spawning 5-6 nights after the full moon of June and July. Spawning was highly synchronized between individuals in the field and in the lab. Reproduction of T. reniformis is temporally isolated from the times at which most other corals reproduce in Eilat. Its relatively long reproductive cycle compared to other hermaphroditic corals may be due to the high reproductive effort associated with the production of eggs by gonochoristic females. Sex ratio in both the Aqaba and Eilat coral populations deviated significantly from a 1:1 ratio. The larger number of males than of females may provide a compensation for sperm limitation due to its dilution in the water column. We posit that such sex allocation would facilitate adaptation within gonochoristic species by increasing fertilization success in low density populations, constituting a phenomenon possibly regulated by chemical communication.
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Affiliation(s)
- Hanna Rapuano
- Department of Zoology, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Itzchak Brickner
- Department of Zoology, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Tom Shlesinger
- Department of Zoology, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Efrat Meroz-Fine
- The Interuniversity Institute for Marine Sciences, P.O. Box 469, Eilat 8810369, Israel
| | - Raz Tamir
- Department of Zoology, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
- The Interuniversity Institute for Marine Sciences, P.O. Box 469, Eilat 8810369, Israel
| | - Yossi Loya
- Department of Zoology, The George S. Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
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15
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Glynn PW, Colley SB, Carpizo-Ituarte E, Richmond RH. Coral Reproduction in the Eastern Pacific. CORAL REEFS OF THE EASTERN TROPICAL PACIFIC 2017. [DOI: 10.1007/978-94-017-7499-4_15] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Siebert S, Juliano CE. Sex, polyps, and medusae: Determination and maintenance of sex in cnidarians. Mol Reprod Dev 2016; 84:105-119. [DOI: 10.1002/mrd.22690] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 08/10/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Stefan Siebert
- Department of Molecular and Cellular Biology; University of California; Davis California
| | - Celina E. Juliano
- Department of Molecular and Cellular Biology; University of California; Davis California
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17
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Reproduction, abundance and survivorship of two Alveopora spp. in the mesophotic reefs of Eilat, Red Sea. Sci Rep 2016; 6:20964. [PMID: 26860656 PMCID: PMC4748239 DOI: 10.1038/srep20964] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 01/07/2016] [Indexed: 11/25/2022] Open
Abstract
Although the study of coral reproduction has advanced tremendously over the last few decades, a particular gap exists in our knowledge of the reproductive modes of corals from ‘mesophotic coral ecosystems’ (MCEs) found at 30–150 m depth. Here, we report for the first time on the reproductive patterns, living cover, and survivorship under different light treatments of two scleractinian species from the MCEs of Eilat, Red-Sea: Alveopora allingi and A. ocellata. Both species are found exclusively within MCEs and are high in both abundance and relative cover. These species display a synchronous gametogenic cycles with consecutive oocyte growth and development. Peak of reproductive activity occurs in late summer (September-October), typified by accelerated oocyte growth, coinciding with the rise in seawater temperature. Estimates of fecundity show mean monthly maxima of 48.5 ± 26.3 and 23.5 ± 11.8 (Mean ± SE) oocytes per cm2 for A. allingi and A. ocellata respectively, prior to spawning. A comparison of light and temperature regimes in the shallow vs. MCE environments is presented, and the response of these species to changes in these parameters is discussed. A call encouraging the much-needed studies on the sexuality and reproductive modes of MCE coral species is expressed.
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18
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Marchini C, Airi V, Fontana R, Tortorelli G, Rocchi M, Falini G, Levy O, Dubinsky Z, Goffredo S. Annual Reproductive Cycle and Unusual Embryogenesis of a Temperate Coral in the Mediterranean Sea. PLoS One 2015; 10:e0141162. [PMID: 26513159 PMCID: PMC4625958 DOI: 10.1371/journal.pone.0141162] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 10/04/2015] [Indexed: 11/18/2022] Open
Abstract
The variety of reproductive processes and modes among coral species reflects their extraordinary regeneration ability. Scleractinians are an established example of clonal animals that can exhibit a mixed strategy of sexual and asexual reproduction to maintain their populations. This study provides the first description of the annual reproductive cycle and embryogenesis of the temperate species Caryophyllia inornata. Cytometric analyses were used to define the annual development of germ cells and embryogenesis. The species was gonochoric with three times more male polyps than female. Polyps were sexually mature from 6 to 8 mm length. Not only females, but also sexually inactive individuals (without germ cells) and males were found to brood their embryos. Spermaries required 12 months to reach maturity, while oogenesis seemed to occur more rapidly (5–6 months). Female polyps were found only during spring and summer. Furthermore, the rate of gamete development in both females and males increased significantly from March to May and fertilization was estimated to occur from April to July, when mature germ cells disappeared. Gametogenesis showed a strong seasonal influence, while embryos were found throughout the year in males and in sexually inactive individuals without a defined trend. This unusual embryogenesis suggests the possibility of agamic reproduction, which combined with sexual reproduction results in high fertility. This mechanism is uncommon and only four other scleractinians (Pocillopora damicornis, Tubastraea diaphana, T. coccinea and Oulastrea crispata) have been shown to generate their broods asexually. The precise nature of this process is still unknown.
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Affiliation(s)
- Chiara Marchini
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126 Bologna, Italy
| | - Valentina Airi
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126 Bologna, Italy
| | - Roberto Fontana
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126 Bologna, Italy
| | - Giada Tortorelli
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126 Bologna, Italy
| | - Marta Rocchi
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126 Bologna, Italy
| | - Giuseppe Falini
- Department of Chemistry “G. Ciamician”, University of Bologna, Via F. Selmi 2, 40126 Bologna, Italy
| | - Oren Levy
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Zvy Dubinsky
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Stefano Goffredo
- Marine Science Group, Department of Biological, Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126 Bologna, Italy
- * E-mail:
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19
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Ruiz-Ramos DV, Saunders M, Fisher CR, Baums IB. Home Bodies and Wanderers: Sympatric Lineages of the Deep-Sea Black Coral Leiopathes glaberrima. PLoS One 2015; 10:e0138989. [PMID: 26488161 PMCID: PMC4619277 DOI: 10.1371/journal.pone.0138989] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 09/07/2015] [Indexed: 11/18/2022] Open
Abstract
Colonial corals occur in a wide range of marine benthic habitats from the shallows to the deep ocean, often defining the structure of their local community. The black coral Leiopathes glaberrima is a long-lived foundation species occurring on carbonate outcrops in the Northern Gulf of Mexico (GoM). Multiple color morphs of L. glaberrima grow sympatrically in the region. Morphological, mitochondrial and nuclear ribosomal markers supported the hypothesis that color morphs constituted a single biological species and that colonies, regardless of color, were somewhat genetically differentiated east and west of the Mississippi Canyon. Ten microsatellite loci were used to determine finer-scale population genetic structure and reproductive characteristics. Gene flow was disrupted between and within two nearby (distance = 36.4 km) hardground sites and two sympatric microsatellite lineages, which might constitute cryptic species, were recovered. Lineage one was outbred and found in all sampled locations (N = 5) across 765.6 km in the Northern Gulf of Mexico. Lineage two was inbred, reproducing predominantly by fragmentation, and restricted to sites around Viosca Knoll. In these sites the lineages and the color phenotypes occurred in different microhabitats, and models of maximum entropy suggested that depth and slope influence the distribution of the color phenotypes within the Vioska Knolls. We conclude that L. glaberrima is phenotypically plastic with a mixed reproductive strategy in the Northern GoM. Such strategy might enable this long-lived species to balance local recruitment with occasional long-distance dispersal to colonize new sites in an environment where habitat is limited.
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Affiliation(s)
- Dannise V. Ruiz-Ramos
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- * E-mail:
| | - Miles Saunders
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Charles R. Fisher
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Iliana B. Baums
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
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Baria MVB, Kurihara H, Harii S. Tolerance to Elevated Temperature and Ocean Acidification of the Larvae of the Solitary Corals Fungia fungites (Linnaues, 1758) and Lithophyllon repanda (Dana, 1846). Zoolog Sci 2015; 32:447-54. [DOI: 10.2108/zs150036] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Maria Vanessa B. Baria
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu,Okinawa 902-0227, Japan
| | - Haruko Kurihara
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara,Okinawa 903-0213, Japan
| | - Saki Harii
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu,Okinawa 902-0227, Japan
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Armoza-Zvuloni R, Kramarsky-Winter E, Loya Y, Schlesinger A, Rosenfeld H. Trioecy, a Unique Breeding Strategy in the Sea Anemone Aiptasia diaphana and Its Association with Sex Steroids1. Biol Reprod 2014; 90:122. [DOI: 10.1095/biolreprod.113.114116] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Baird AH, Cumbo VR, Figueiredo J, Harii S. A pre-zygotic barrier to hybridization in two con-generic species of scleractinian corals. F1000Res 2013; 2:193. [PMID: 26594320 PMCID: PMC4647700 DOI: 10.12688/f1000research.2-193.v2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/30/2013] [Indexed: 12/03/2022] Open
Abstract
Hybridization is often cited as a potential source of evolutionary novelty in the order
Scleractinia. While hybrid embryos can be produced
in vitro, it has been difficult to identify adult hybrids in the wild. Here, we tested the potential for hybridization between two closely related species in the family Fungiidae. We mixed approximately 5000 eggs of
Ctenactis echinata with sperm from
C. crassa. No hybrid embryos were produced. This observation adds to a growing body of evidence for pre-zygotic barriers to hybridization in corals and challenges the claim that hybridization is a major source of evolutionary novelty in the order.
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Affiliation(s)
- Andrew H Baird
- Australian Research Council, Centre of Excellence for Coral Reefs Studies, James Cook University, Townsville, Australia
| | - Vivian R Cumbo
- Australian Research Council, Centre of Excellence for Coral Reefs Studies, James Cook University, Townsville, Australia
| | - Joana Figueiredo
- Australian Research Council, Centre of Excellence for Coral Reefs Studies, James Cook University, Townsville, Australia
| | - Saki Harii
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa, Japan
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23
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Casado-Amezua P, Gasparini G, Goffredo S. Phenological and morphological variations in the Mediterranean orange coral Astroides calycularis between two distant localities. ZOOLOGY 2013; 116:159-67. [DOI: 10.1016/j.zool.2012.10.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 10/19/2012] [Accepted: 10/25/2012] [Indexed: 11/24/2022]
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Cutting A, Chue J, Smith CA. Just how conserved is vertebrate sex determination? Dev Dyn 2013; 242:380-7. [PMID: 23390004 DOI: 10.1002/dvdy.23944] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 12/20/2012] [Accepted: 12/21/2012] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Sex determination in vertebrate embryos has long been equated with gonadal differentiation into testes or ovaries. This view has been challenged over the years by reports of somatic sexual dimorphisms pre-dating gonadal sex differentiation. The recent finding that sex determination in birds is likely to be partly cell autonomous has again called for a broader definition of sex determination. Inherent sexual differentiation in each and every cell may apply widely among vertebrates, and may involve more than one "master sex gene" on a sex chromosome. At the gonadal level, key genes required for proper sexual differentiation are conserved among vertebrates, but their relative positions in the ovarian and testicular cascades differ. RESULTS We illustrate these differences by comparing key sex genes in fishes versus birds and mammals, with emphasis on DM domain genes and the SOX9-AMH pathway in the testis and the FOXL2-Aromatase pathway in the ovary. Such comparisons facilitate the identification of ancient versus derived genes involved in gonadal sex determination. CONCLUSIONS The data indicate that vertebrate sex-determining cascades are not as conserved as once thought.
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Affiliation(s)
- Andrew Cutting
- Murdoch Childrens Research Institute, Royal Childrens Hospital, Parkville, Australia
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Goffredo S, Marchini C, Rocchi M, Airi V, Caroselli E, Falini G, Levy O, Dubinsky Z, Zaccanti F. Unusual pattern of embryogenesis of Caryophyllia inornata (scleractinia, caryophylliidae) in the mediterranean sea: Maybe agamic reproduction? J Morphol 2012; 273:943-56. [DOI: 10.1002/jmor.20039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 03/23/2012] [Accepted: 04/06/2012] [Indexed: 01/01/2023]
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Kuwamura T, Suzuki S, Kadota T. Reversed sex change by widowed males in polygynous and protogynous fishes: female removal experiments in the field. Naturwissenschaften 2011; 98:1041-8. [DOI: 10.1007/s00114-011-0860-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 10/15/2011] [Accepted: 10/18/2011] [Indexed: 11/24/2022]
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Novel Genetic Diversity Through Somatic Mutations: Fuel for Adaptation of Reef Corals? DIVERSITY-BASEL 2011. [DOI: 10.3390/d3030405] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Brooks M, Iwasa Y. Size-dependent sex change can be the ESS without any size advantage of reproduction when mortality is size-dependent. Theor Popul Biol 2010; 78:183-91. [DOI: 10.1016/j.tpb.2010.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Revised: 06/30/2010] [Accepted: 07/06/2010] [Indexed: 10/19/2022]
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Sexual plasticity and self-fertilization in the sea anemone Aiptasia diaphana. PLoS One 2010; 5:e11874. [PMID: 20686700 PMCID: PMC2912375 DOI: 10.1371/journal.pone.0011874] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2009] [Accepted: 06/16/2010] [Indexed: 11/19/2022] Open
Abstract
Traits that influence reproductive success and contribute to reproductive isolation in animal and plant populations are a central focus of evolutionary biology. In the present study we used an experimental approach to demonstrate the occurrence of environmental effects on sexual and asexual reproduction, and provide evidence for sexual plasticity and inter-clonal fertilization in laboratory-cultured lines of the sea anemone Aiptasia diaphana. We showed that in A. diaphana, both asexual reproduction by pedal laceration, and sexual reproduction have seasonal components. The rate of pedal laceration was ten-fold higher under summer photoperiod and water temperature conditions than under winter conditions. The onset of gametogenesis coincided with the rising water temperatures occurring in spring, and spawning occurred under parameters that emulated summer photoperiod and temperature conditions. In addition, we showed that under laboratory conditions, asexually produced clones derived from a single founder individual exhibit sexual plasticity, resulting in the development of both male and female individuals. Moreover, a single female founder produced not only males and females but also hermaphrodite individuals. We further demonstrated that A. diaphana can fertilize within and between clone lines, producing swimming planula larvae. These diverse reproductive strategies may explain the species success as invader of artificial marine substrates. We suggest that these diverse reproductive strategies, together with their unique evolutionary position, make Aiptasia diaphana an excellent model for studying the evolution of sex.
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Baird AH, Guest JR, Willis BL. Systematic and Biogeographical Patterns in the Reproductive Biology of Scleractinian Corals. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2009. [DOI: 10.1146/annurev.ecolsys.110308.120220] [Citation(s) in RCA: 487] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andrew H. Baird
- ARC Center of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland 4811, Australia;
| | - James R. Guest
- Marine Biology Laboratory, Department of Biological Sciences, National University of Singapore, Singapore 117543;
| | - Bette L. Willis
- ARC Center of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland 4811, Australia;
- School of Marine and Tropical Biology, James Cook University, Townsville, Queensland 4811, Australia;
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LOYA Y, SAKAI K, HEYWARD A. Reproductive patterns of fungiid corals in Okinawa, Japan. ACTA ACUST UNITED AC 2009. [DOI: 10.3755/galaxea.11.119] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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