Mitochondrial DNA sequence variation in deep-sea bamboo coral (Keratoisidinae) species in the southwest and northwest Pacific Ocean

Smith, Peter; McVeagh, S. M.; Mingoia, J. T.; France, Scott C.

doi:10.1007/s00227-003-1206-5

Cited by 46 publications

(56 citation statements)

References 26 publications

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“…The only study that has provided genetic information to build a phylogeny with keratoisidid bamboo corals is that of France (2007), who used MSH1 sequences from 32 isidids to demonstrate that the distinction between 2 genera (Keratoisis and Lepidisis) should not be established on the basis of branching patterns of the colonies. Other studies, such as Smith et al (2004), andBrugler &France (2008), have generated important bamboo coral genetic information, but none have used their findings in a phylogenetic context. Bearing in mind the phylogenetic results of France (2007), it is evident that the MSH1 topology showed no monophyly for the 4 Keratoisidinae genera (Acanella, Isidella, Keratoisis and Lepidisis).…”

Section: Discussionmentioning

confidence: 99%

Character lability in deep-sea bamboo corals (Octocorallia, Isididae, Keratoisidinae)

Dueñas¹,

Sánchez²

2009

Mar. Ecol. Prog. Ser.

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Morphological traits that appear multiple times when mapped onto molecular phylogenies have been associated with character lability. In an ecological context, functional characters, if labile, could confer advantages for adaptation to specific habitats. Bamboo corals are long-lived, deep-sea octocorals characterized by an obvious modularity, which affords diverse branching morphologies in the Keratoisidinae subfamily. We reconstructed molecular phylogenies using 16S (mitochondrial) and ITS2 (nuclear) ribosomal DNA, and obtained 39 ITS2 and 22 16S sequences from 22 different specimens. The molecular topologies showed Keratoisidinae genera as polyphyletic. Twelve morphological characters were chosen to make the ancestral character reconstruction, none of which exhibited character states forming monophyletic groups when mapped onto molecular phylogenies. The different character states appeared as having been gained and lost multiple times. Modular organisms such as bamboo corals could have higher character evolvability than unitary organisms. Complexity arising from simple body plans is a typical characteristic in most modular organisms, such as plants and colonial marine invertebrates. However, bamboo corals may also exhibit phenotypic plasticity associated with continuous characters, given that they can respond to extrinsic controls. Our results also have direct repercussions on Isididae taxonomy, since morphological characters have been used for their classification. Consequently, we suggest that the current taxonomy of the group is re-evaluated and that the different mechanisms regulating modularity and character evolution in bamboo corals are explored.

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Section: Discussionmentioning

confidence: 99%

Character lability in deep-sea bamboo corals (Octocorallia, Isididae, Keratoisidinae)

Dueñas¹,

Sánchez²

2009

Mar. Ecol. Prog. Ser.

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“…A review of the connectivity for known deep-sea benthic species in relation to biological and oceanographic processes estimated the minimum planktonic larval duration for settlement to be 35 d for half of the species and 69 d to achieve three-quarters (Hilario et al 2015). Even though the dispersal range of benthic invertebrates (Todd 1998), including deep-sea corals, can extend across oceanic expanses (Smith et al 2004), the bulk of settlement occurs locally (Grigg 1965, Kinlan & Gaines 2003. Shallow-water studies comparing broadcast taxa with brooding corals indicate that localized recruitment occurs regardless of life history type (Richmond 1988), and recruitment is heavily influenced by timing, environmental conditions, and synchronous vs. asynchronous release (Richmond & Hunter 1990).…”

Section: Dispersal and Recruitmentmentioning

confidence: 99%

Settlement, colonization, and succession patterns of gold coral Kulamanamana haumeaae in Hawaiian deep coral assemblages

Parrish¹

2015

Mar. Ecol. Prog. Ser.

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The Hawaiian gold coral is a parasitic zoantharian that colonizes other deep corals and secretes a protein skeleton that over millennia can grow and more than double the original mean size of the host colony. Surveys at 6 known coral beds in the Hawaiian Archipelago found mature gold coral to be a common taxon and dominant at the geologically older sites. Fewer than 5% of the gold coral colonies seen were in the process of subsuming their host, described here as the 'midas' phase. Bamboo coral (Acanella, Keratoisis) comprised 85% of the midas colonies, with two-thirds found at the youngest site, where the mean height of bamboo coral was significantly greater than at other sites. Marked midas colonies revisited after 5 yr showed the gold coral tissue spreading across the host at an estimated rate of 2.2 ± 0.69 cm yr −1 (mean ± SD). Cross sections of mature gold coral colonies show the host averages just 9.8 cm of the stem's core, indicating that much of the host skeleton is lost when subsumed by gold coral tissue. The absence of midas colonies in a bamboo coral assemblage found growing on a 76 yr old wreck close (~1 km) to a mature gold coral patch suggests that gold coral recruitment is infrequent. This time lag between the growth of the host and the arrival of the gold coral successor is essential because otherwise the speed of the midas phase would subsume the host population faster than it could replenish.

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“…Follow-on surveys compared seamounts and adjacent slopes in the Austral-New Zealand region and revealed relatively few endemic species (e.g., Samadi et al, 2006;Hall-Spencer et al, 2007), with many species widely distributed within a specific depth range or having near-global distributions (Smith et al, 2004a;Roberts et al, 2006;Samadi et al, 2006;McClain et al, 2009). …”

Section: Biological "Islands" In the Deep Seamentioning

confidence: 99%

Seamounts: Deep-Ocean Laboratories of Faunal Connectivity, Evolution, and Endemism

Shank¹

2010

Oceanog.

100

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Mitochondrial DNA sequence variation in deep-sea bamboo coral (Keratoisidinae) species in the southwest and northwest Pacific Ocean

Cited by 46 publications

References 26 publications

Character lability in deep-sea bamboo corals (Octocorallia, Isididae, Keratoisidinae)

Character lability in deep-sea bamboo corals (Octocorallia, Isididae, Keratoisidinae)

Settlement, colonization, and succession patterns of gold coral Kulamanamana haumeaae in Hawaiian deep coral assemblages

Seamounts: Deep-Ocean Laboratories of Faunal Connectivity, Evolution, and Endemism

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