Evolutionary implications of predation on Recent comatulid crinoids from the Great Barrier Reef

Meyer, David L.

doi:10.1017/s0094837300011477

Cited by 103 publications

(99 citation statements)

References 29 publications

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“…With few exceptions (Clements 1988, Clements et al 1988, Dobson et al 1991, studies of ophiuroids have dealt only with arm regeneration. Meyer (1985Meyer ( , 1988 showed that crinoids may lose portions of the visceral mass to predators. Meyer (1988) studied regeneration of the visceral mass.…”

Section: Discussionmentioning

confidence: 99%

Effects of disc and arm loss on regeneration byMicrophiopholis gracillima (Echinodermata: Ophiuroidea) in nutrient-free seawater

et al. 1991

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Abstract. Individual Microphiopholis gracillima (Stimpson) were collected in February 1987 from an intertidal mudflat in the North Inlet Estuary near Georgetown, South Carolina, USA, and allowed to regenerate for 10 or 20 d in nutrient-free seawater after having different amounts of disc and/or arm tissue removed. In the absence of external nutrients, the pattern of regeneration was affected by both the quantity and type of tissue lost, and changed over time. Depending upon which tissues were lost, M. gracillima allocated stored materials to disc and/or arm regeneration until a gut and three complete arms were achieved. This "minimal functional configuration" allows the brittlestar to construct its respiration and feeding burrows and digest whatever food it captures. In the absence of external nutrients, M. gracillima slowed the rate of regeneration once this state was reached, subsequently using nutrients for maintenance metabolism only. Brittlestars which suffer frequent sublethal tissue loss in nature have regeneration patterns that result from a complex interplay between time, quantity and quality of tissue lost, available nutrients and risk of future damage or mortality.

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Section: Discussionmentioning

confidence: 99%

Effects of disc and arm loss on regeneration byMicrophiopholis gracillima (Echinodermata: Ophiuroidea) in nutrient-free seawater

et al. 1991

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“…IWP comatulid crinoids, for example, have higher incidences of spinose arm bases than do species in the WA. This difference is presumably related to partial predation by fishes (Meyer & Macurda 1977, Meyer 1985.…”

Section: Grazing and The Architecture Of Sessile Organismsmentioning

confidence: 99%

Interoceanic differences in adaptation: effects of history and productivity

Vermeij¹

1989

Mar. Ecol. Prog. Ser.

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Previously published evidence indicated that the degree of habitat specialization and enemy-related adaptation among shallow-water tropical marine species was greatest in the Indo-WestPacific (IWP), intermediate in the Eastern Pacific (EP), and lowest in the Western Atlantic (WA) and Eastern Atlantic (EA). New data on the incidence of unsuccessful shell breakage (measured a s the frequency of shell repair) and on the importance of shell breakage as a cause of death for shallow-water gastropods complicate, but do not invalidate, this picture. Columbellid and planaxid gastropods conforn~ to the expected interoceanic pattern of shell repair in that the lowest frequencies of repair were found in the Atlantic; but the Cerithiidae and Thaididae showed no interoceanic differences in repalr, and the Conidae exhibited a contradictory pattern in which repair was most frequent in the WA and least frequent in the IWP. Great intraregional variation existed in the contribution that breakage made to overall gastropod mortality, as inferred from analyses of dead shells. There was a tendency for breakage to be relatively more important as a cause of death in the IMrP and EP than in the WA, but the differences were not statistically significant. A review of other recent literature generally supported the hypothesis that the IWP biotas have undergone more specialization with respect to h a b~t a t and eneinyrelated adaptation than have marine biotas in tropical America. Available historical evidence suggests that these d~fferences are attributable to contrasting geological histories. In the IWP, extensive speciation, especially among well-armored molluscs, took place in the absence of significant extinctions. In the WA, widespread extinctions selectively eliminated armored gastropod taxa, which were not replaced through diversification of Pliocene and Pleistocene survivors. The apparent decline of planktonic productivity in many parts of the WA following uplift of the Central American land bridge during the Pliocene may have contributed to the observed pattern of molluscan extinctions. In the EP, where productivitv has remained h~g h , extinction rates were lower, and some highly adapted species have invaded from the IWP. The paper closes with a discussion of future directions in research.

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“…The only available studies are very old and incomplete [22][23][24]. In spite of this, the common presence in nature of partially or completely eviscerated specimens and individuals with visceral regeneration in progress [7,[25][26][27][28], indicates that the internal organs of crinoids display striking regenerative capabilities. Thus, we re-explored visceral regeneration using a modern approach in preliminary pilot studies, wich provided encouraging results [29,30].…”

Section: Introductionmentioning

confidence: 99%

Visceral regeneration in the crinoid Antedon mediterranea: basic mechanisms, tissues and cells involved in gut regrowth

et al. 2006

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Abstract:Crinoids are able to regenerate completely many body parts, namely arms, pinnules, cirri, and also viscera, including the whole gut, lost after self-induced or traumatic mutilations. In contrast to the regenerative processes related to external appendages, those related to internal organs have been poorly investigated. In order to provide a comprehensive view of these processes, and of their main events, timing and mechanisms, the present work is exploring visceral regeneration in the feather star Antedon meditteranea. The histological and cellular aspects of visceral regeneration were monitored at predetermined times (from 24 hours to 3 weeks post evisceration) using microscopy and immunocytochemistry. The overall regeneration process can be divided into three main phases, leading in 3 weeks to the reconstruction of a complete functional gut. After a brief wound healing phase, new tissues and organs develop as a result of extensive cell migration and transdifferentiation. The cells involved in these processes are mainly coelothelial cells, which after trans-differentiating into progenitor cells form clusters of enterocytic precursors. The advanced phase is then characterized by the growth and differentiation of the gut rudiment. In general, our results confirm the striking potential for repair (wound healing) and regeneration displayed by crinoids at the organ, tissue and cellular levels.

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Evolutionary implications of predation on Recent comatulid crinoids from the Great Barrier Reef

Cited by 103 publications

References 29 publications

Effects of disc and arm loss on regeneration byMicrophiopholis gracillima (Echinodermata: Ophiuroidea) in nutrient-free seawater

Effects of disc and arm loss on regeneration byMicrophiopholis gracillima (Echinodermata: Ophiuroidea) in nutrient-free seawater

Interoceanic differences in adaptation: effects of history and productivity

Visceral regeneration in the crinoid Antedon mediterranea: basic mechanisms, tissues and cells involved in gut regrowth

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