Colony morphology, age structure, and relative growth of two gorgonian corals, Leptogorgia hebes (Verrill) and Leptogorgia virgulata (Lamarck), from the northerm Gulf of Mexico

  title={Colony morphology, age structure, and relative growth of two gorgonian corals, Leptogorgia hebes (Verrill) and Leptogorgia virgulata (Lamarck), from the northerm Gulf of Mexico},
  author={Naomi D. Mitchell and Michael R. Dardeau and William W. Schroeder},
  journal={Coral Reefs},
Along the northeastern Gulf of Mexico coast, Leptogorgia hebes is the predominant gorgonian at two inner shelf (22 and 27 m) sites, while Leptogorgia virgulata dominates a third shallow (1–2m), inshore site. The axial skeleton of both species is composed of concentric rings which appeared to exhibit annual periodicity. Although age structure of the populations differed between shelf sites, neither colony growth rates, estimated from direct measurements of ring widths plotted on Walford graphs… 

Growth and population dynamics model of the Mediterranean solitary coral Balanophyllia europaea (Scleractinia, Dendrophylliidae)

The description of the main life-strategy characteristics of the Mediterranean endemic coral B. europaea is completed, which constitutes a major advance in the understanding of the biology and ecology of Mediterranean scleractinian corals, and represents the most complete description of a coral from this geographic area to date.

Understanding growth and age of red tree corals (Primnoa pacifica) in the North Pacific Ocean

An in-situ age estimation technique for corals from the Northeast Pacific Ocean providing a non-invasive method for evaluating coral age without removing colonies from the population is developed and it is determined that annual bands provided the most accurate means for determining coral age in live-collected corals, relative to radiometric dating.

Sea whip coral Leptogorgia virgulata in the Mid-Atlantic Bight: Colony complexity, age, and growth

This is the first study providing such data for sea whips in the coastal mid-Atlantic region, and the baseline created will be a useful reference to study changes over time.

Morphology and growth of the deep-water gorgonians Primnoa resedaeformis and Paragorgia arborea

The morphology of the gorgonian corals Paragorgia arborea and Primnoa resedaeformis was studied from video records and colonies collected from different locations in Atlantic Canada, at depths

Morphological features of the gorgonian Paramuricea macrospina on the continental shelf and shelf edge (Menorca Channel, Western Mediterranean Sea)

ABSTRACT Morphological variability in gorgonians is frequent and commonly associated with habitat variability, often resulting in segregated morphotypes. Paramuricea macrospina is an endemic

Reproductive Biology of the Gorgonian Leptoprgia hebes (Verrill).

A population of the gorgonian, Leptogorgia hebes, was sampled monthly between April 1991 and April 1992 from a hardbottom area and revealed an annual cycle of gonadal development; oogenesis began in January while spermatogenesis lagged behind, with primary sperMatocytes not appearing until April and May.

Population structure of an exploited benthic cnidarian: the case study of red coral (Corallium rubrum L.)

This study found that some harvested red coral populations had a significantly different size structure when compared to populations at the nearby Marine Protected Area of Medas Islands at the Spanish Costa Brava (NW Mediterranean), confirming that MPAs are useful to distinguish between anthropogenic and natural influences on population structure.

Comparative demography of mushroom corals (Scleractinia: Fungiidae) at Eilat, northern Red Sea

The population dynamics of solitary free-living mushroom corals on a fringing reef at Eilat, northern Red Sea, conclude that the Beverton and Holt population dynamic model is applicable to the management of stony corals with solitary or compact, upright growth forms that rarely fragment.

Does historical harvesting affect colony size distribution and genetic diversity in Corallium rubrum (Linnaeus, 1758)? Evidences from the Southern Mediterranean commercial banks

To asses whether and how the exploitation effort affects size distribution and genetic diversity of Tunisian commercial populations, biometric data and microsatellite markers were used to characterize 113 colonies collected on nine commercial banks.




In the absence of significant direct competition between the two species, their similarities in life history may simply represent similar adaptations to the same set of environmental variables.

Water flow and coral colony size: Interhabitat comparisons of the octocoral Alcyonium siderium.

  • K. Sebens
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1984
Although plankton concentrations were similar at all sites during a 2-yr period, increased encounter rates of zooplankton with coral tentacles will result in greater energy intake and, thus, faster growth rates at the more exposed sites with greater flow.

Determinants of Recruitment, Juvenile Growth, and Spatial Distribution of a Shallow-Water Gorgonian

Although the abundance of recruits was correlated with habitat quality, there was no relationship between recruitment and adult abundance or the percent cover of encrusting organisms, and recruitment was highest and least variable in patches of clean limestone compared with recruitment in randomly selected patches.

Inter- and intraspecific variation in gorgonian colony morphology: quantifying branching patterns in arborescent animals

Data on the branching characters of these three gorgonian species demonstrate that gross colony form can be studied as a quantifiable component of phenotype and that gorgonians display both species level and ecophenotypic variation in colony form.

Octocoral distributions at Carrie Bow Cay, Belize

Octocorals may exhibit a third life history strategy in which low recruitment in concert with high survival leads to an accun~ulation of large colonies, very similar to those previously observed among stony corals.

Age Structure of a Longevous Coral: A Relative Index of Habitat Suitability and Stability

  • R. Grigg
  • Environmental Science
    The American Naturalist
  • 1975
Data presented in this paper illustrate how differences in age structure between isolated populations of some longevous benthic invertebrates may be useful in interpreting both the relative


Comparison of the number of growth rings present in the skeletons of colonies of two gorgonian corals, Muricea californica and M. fruticosa, with estimates of their age based on observed growth rates

Unionid Growth Curves Derived from Annual Rings: A Baseline Model for Long Point Bay, Lake Erie

Simulation of baseline and environmental impact data was used to illustrate the use of baseline growth models in testing for long-term environmental deterioration of Lampsilis radiata and Anodonta grandis.

Hypsometric (area-altitude) analysis of erosional topography.

The percentage hypsometric curve (area-altitude curve) relates horizontal cross-sectional area of a drainage basin to relative elevation above basin mouth. By use of dimensionless parameters, curves