Hydrolithon abyssophila sp. nov. (Hydrolithoideae, Corallinales), a bisporic coralline from the insular shelf edge of Puerto Rico and the Virgin Islands (US)
Abstract
A new species of Hydrolithon is described from mesophotic habitats, between 30 and at least 76 m depth, off La Parguera, Puerto Rico, and St Thomas, Virgin Islands (Caribbean Sea). Its encrusting thallus covers corals and rocks. Hydrolithon abyssophila sp. nov. is distinctive in developing bisporangia that are about twice as large as its congeners and in lacking both perithallial protuberances and trichocytes in horizontal or vertical groups. It reproduces primarily by uninucleate bispores that presumably recycle the parental phase. Unfertilized carpogonia were observed in one collection suggesting the rare occurrence of gametophytic reproduction in the species.
Financial support for the field and laboratory work was provided through grants from the Captain Stenholms Foundation and The Royal Society of Arts and Sciences in Goteborg to Athanasios Athanasiadis. David L. Ballantine and Hector Ruiz acknowledge funding by the National Oceanographic and Atmospheric Administration Coastal Ocean Program under award #NA17OP2919 and (in part) #NA06NOS4780190 to the University of Puerto Rico – Mayagüez. We also thank three anonymous referees for their helpful comments.
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Articles in the same Issue
- Masthead
- Masthead
- Research articles
- Ecological dynamics of Zostera marina (eelgrass) in three adjacent bays in Atlantic Canada
- Historical and present distribution of Zostera marina in the high north (Troms County, northern Norway) – a decline over the last century
- Tolerance to air exposure: a feature driving the latitudinal distribution of two sibling kelp species
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- Assessment of Fucus virsoides distribution in the Gulf of Trieste (Adriatic Sea) and its relation to environmental variables
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- Linking macroalgal δ15N-values to nitrogen sources and effects of nutrient stress on coral condition in an upwelling region
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- Hydrolithon abyssophila sp. nov. (Hydrolithoideae, Corallinales), a bisporic coralline from the insular shelf edge of Puerto Rico and the Virgin Islands (US)
- The first record of Grateloupia subpectinata from the New Zealand region and comparison with G. prolifera, a species endemic to the Chatham Islands
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- Short communication
- Fungal endophytes of the seagrasses Halodule wrightii and Thalassia testudinum in the north-central Gulf of Mexico
Articles in the same Issue
- Masthead
- Masthead
- Research articles
- Ecological dynamics of Zostera marina (eelgrass) in three adjacent bays in Atlantic Canada
- Historical and present distribution of Zostera marina in the high north (Troms County, northern Norway) – a decline over the last century
- Tolerance to air exposure: a feature driving the latitudinal distribution of two sibling kelp species
- Colpomenia bullosa crust (Phaeophyceae) stressed less by grazing than by abiotic factors in high intertidal rockpools in southeast Australia
- Assessment of Fucus virsoides distribution in the Gulf of Trieste (Adriatic Sea) and its relation to environmental variables
- Long-term changes in sublittoral macroalgal assemblages related to water quality improvement
- Linking macroalgal δ15N-values to nitrogen sources and effects of nutrient stress on coral condition in an upwelling region
- Non-coralline crustose algae associated with maerl beds in Portugal: a reappraisal of their diversity in the Atlantic Iberian beds
- Hydrolithon abyssophila sp. nov. (Hydrolithoideae, Corallinales), a bisporic coralline from the insular shelf edge of Puerto Rico and the Virgin Islands (US)
- The first record of Grateloupia subpectinata from the New Zealand region and comparison with G. prolifera, a species endemic to the Chatham Islands
- Neosiphonia baliana sp. nov. and N. silvae sp. nov. (Rhodomelaceae, Rhodophyta) from Bali, Indonesia
- Effects of density and substrate type on recruitment and growth of Pyropia torta (Rhodophyta) gametophytes
- Morphology and life stages of the potentially pinnatoxin-producing thecate dinoflagellate Vulcanodinium rugosum from the tropical Mexican Pacific
- Short communication
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