Abundance and arm loss of the infaunal brittlestar Ophiophragmus filograneus (Echinodermata: Ophiuroidea), with an experimental determination of regeneration rates in natural and planted seagrass beds

Clements, Lee Ann Jerome; Bell, Susan S.; Kurdziel, Josepha P.

doi:10.1007/bf00349478

Cited by 23 publications

(13 citation statements)

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“…I). These frequencies for O. reticulata reached high values, as registered for Amphioplus coniortodes Clark, 1918by SINGLETARY (1980 and Ophiophragmus filograneus (Lyman, 1875) by CLEMENTS et al (1994). Generally, most of the literature of arm regeneration in ophiuroids observed frequencies of regenerating individuals ranging from 50 to 80% (Tab.…”

Section: Discussionmentioning

confidence: 74%

Ophionereis reticulata (Echinodermata, Ophiuroidea)

Yokoyama

Amaral

2010

Iheringia, Sér. Zool.

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ABSTRACT. This study compared the arm regeneration frequencies in two different populations of Ophionereis reticulata (Say, 1825) in São Sebastião, Southeast Brazil and observed arm regeneration between age classes (juvenile and adults) and sexes (male and female). From the 1,170 individuals sampled, 1,089 (92.2%) showed signs of arm regeneration. The relative frequencies of regenerating arms in the two areas were not different (Baleeiro Isthmus: 91.3% and Grande Beach: 99.5%). Both areas also presented similar values for the number of arms regenerating/individual and in the frequency of regenerating individuals. The major part of the regenerating scars was concentrated in the distal portion of the arm. Sub-lethal predation is most likely the cause to the high rates of arm regeneration in O. reticulata. There was no significant differences in the regeneration rates between females (3.57 ± 1.36 arms regenerating/individual) and males (3.47 ± 1.42). KEYWORDS.Ophiuroid, arm regeneration, sub-lethal predation, Brazil. RESUMO. Regeneração dos braços em duas populações deOphionereis reticulata (Echinodermata, Ophiuroidea). Este estudo comparou as frequências de regeneração dos braços de duas populações de Ophionereis reticulata (Say, 1825), de São Sebastião, sudeste do Brasil. Além disso, foram observadas diferenças nas frequências de regeneração entre classes etárias (juvenis e adultos) e entre machos e fêmeas. Dos 1.170 indivíduos coletados, 1.089 (92,2%) mostraram sinais de regeneração nos braços. A frequência relativa de braços em regeneração entre as duas áreas não diferiu significativamente (Istmo do Baleeiro: 91,3% e Praia Grande: 99,5%). Ambas as áreas apresentaram valores semelhantes no número de braços regenerando/indivíduo e na frequência de indivíduos em regeneração. A maior parte das marcas de regeneração concentraram-se na porção distal dos braços, o que indica a influência de predação subletal como a causa principal da regeneração em O. reticulata. Além disso, não houve diferença significativa nos índices de regeneração entre fêmeas (3,57 ± 1,36 braços regenerando/indivíduo) e machos (3,47 ± 1,42). PALAVRAS-CHAVE.Ofiuróide, regeneração braquial, predação subletal, Brasil.

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Section: Discussionmentioning

confidence: 74%

Ophionereis reticulata (Echinodermata, Ophiuroidea)

Yokoyama

Amaral

2010

Iheringia, Sér. Zool.

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“…Care must also be taken in extrapolating these sublethal predation rates to population~ of infaunal brittlestars which live in different environments. For example, Ophiophragmus filograneus in seagrass beds in Tampa Bay, Florida, USA, were found to experience no arm loss in control (unamputated) brittlestars held in topless cages for a 14 d experiment (Clements et al 1994). Additionally, a recent survey of arm scarring incidence seemed to indicate that brittlestar habitat preference and/or trophic mode was correlated to scarring frequency (Skold & Rosenberg 1996).…”

Section: Discussionmentioning

confidence: 99%

Sublethal predation:field measurements of arm tissue loss from the ophiuroid Microphiopholis gracillima and immunochemical identification of its predators in North Inlet, South Carolina, USA

Pape-Lindstrom¹,

Feller²,

Stancyk³

et al. 1997

Mar. Ecol. Prog. Ser.

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“…Prédation is the most commonly cited cause of such injuries to ophiuroids (e.g., Stewart 1996;Pape-Lindstrom et al 1997), but physical stress (Woodley et al 1981;Makra and Keegan 1999) has also been documented as an important causative agent of these injuries. Food resource levels (Clements et al 1988;Lawrence and Vasquez 1996), water chemistry parameters (Donachy and Watabe 1986;Nilsson and Sköld 1996;Talbot and Lawrence 2000) and habitat type (Sides 1987;Aronson 1989;Clements et al 1994;Rose 1997;Pomory and Lawrence 2001) can also influence injury rates and/or regeneration times.…”

Section: Introductionmentioning

confidence: 99%