Regeneration as a novel method to culture marine ornamental sabellids

Murray, Joanna M.; Watson, Gordon; Giangrande, Adriana; Licciano, Margherita; Bentley, M. G.

doi:10.1016/j.aquaculture.2013.06.019

Cited by 23 publications

(41 citation statements)

References 23 publications

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“…Sabellids or feather-duster worms are characterised, among other features, by an often colourful radiolar crown emerging from the tube which they inhabit, and are well appreciated among divers and aquarium lovers as some species are also exploited for ornamental purposes (Capa et al 2010;Murray et al 2013). Sabellidae is one of the most diverse and ubiquitous polychaete families with over 400 nominal species described to date, currently grouped in 39 genera .…”

Section: Introductionmentioning

confidence: 99%

A taxonomic guide to the fanworms (Sabellidae, Annelida) of Lizard Island, Great Barrier Reef, Australia, including new species and new records

Murray

2015

Zootaxa

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This comprehensive taxonomic work is the result of the study of fan worms (Sabellidae, Annelida) collected over the last 40 years from around the Lizard Island Archipelago, Great Barrier Reef, Australia. Some species described herein are commonly found in Lizard Island waters but had not previously been formally reported in the literature. Most species appear to be not particularly abundant, and few specimens have been collected despite the sampling effort in the area over this time period. After this study, the overall sabellid diversity of the archipelago has been greatly increased (by more than 650%). Before this revision, only four sabellid species had been recorded for Lizard Island, and in this paper we report 31 species, 13 of which belong to nominal species, six are formally described as new species (Euchone danieloi n. sp., Euchone glennoi n. sp., Jasmineira gustavoi n. sp., Megalomma jubata n. sp., Myxicola nana n. sp., and Paradialychone ambigua n. sp.), and the identity of 12 species is still unknown (those referred as cf. or sp.). Two species are newly recorded in Australia and two in Queensland. The invasive species Branchiomma bairdi is reported for the first time at Lizard Island. The genus Paradialychone is reported for Australia for the first time. Standardised descriptions, general photographs of live and/or preserved specimens and distribution data are provided for all species. New species descriptions are accompanied by detailed illustrations and exhaustive morphological information. A dichotomous key for sabellid identification is also included.

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Section: Introductionmentioning

confidence: 99%

A taxonomic guide to the fanworms (Sabellidae, Annelida) of Lizard Island, Great Barrier Reef, Australia, including new species and new records

Murray

2015

Zootaxa

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“…Referring to existing data, only a few annelid species are incapable of posterior regeneration, like members of Arenicolidae, Opheliidae, Sabellidae, and presumably most Hirudinea (Stolte, ; Hyman, ; Bely, ). Interestingly, other members of Sabellidae regenerate well (Kolbasova et al, ; Murray et al, ). In general, the number of annelids showing anterior regeneration is smaller, but this ability is present in many annelid families, too (Bely, ; Zoran, ).…”

Section: Introductionmentioning

confidence: 99%

“…Despite that annelids comprise about 16.500 described species (Westheide and Purschke, ) investigations concerning anterior regenerative patterns are scarce (Bely, ). Recent investigations of anterior regeneration are available for taxa distributed all over the annelid tree (e.g., Coulon et al, ; Paulus and Müller, ; Bely and Sikes, ; Murray et al, ). Nevertheless, some major annelid groups like Terebellomorpha or Cirratuliformia have not been studied so far.…”

Section: Introductionmentioning

confidence: 99%

Structure and anterior regeneration of musculature and nervous system inCirratuluscf.cirratus(Cirratulidae, Annelida)

Weidhase

Bleidorn

Helm

2014

Journal of Morphology

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Annelids provide suitable models for studying regeneration. By now, comprehensive information is restricted to only a few taxa. For many other annelids, comparative data are scarce or even missing. Here, we describe the regeneration of a member of the Cirratulus cirratus species complex. Using phalloidin-labeling and antibody-stainings combined with subsequent confocal laser scanning microscopy, we provide data about the organization of body wall musculature and nervous system of intact specimens, as well as about anteriorly regenerating specimens. Our analyses show that C. cf. cirratus exhibits a prominent longitudinal muscle layer forming a dorsal muscle plate, two ventral muscle strands and a ventral-median muscle fiber. The circular musculature forms closed rings which are interrupted in the area of parapodia. The nervous system of C. cf. cirratus shows a typical rope-ladder like arrangement and the circumesophageal connectives exhibit two separate roots leading to the brain. During regeneration, the nervous system redevelops remarkably earlier than the musculature, first constituting a tripartite loop-like structure which later become the circumesophageal connectives. Regeneration of longitudinal musculature starts with diffuse ingrowth and subsequent structuring into the blastema. In contrast, circular musculature develops independently inside the blastema. Our findings constitute the first analysis of regeneration for a member of the Cirratuliformia on a structural level. Summarizing the regeneration process in C. cf. cirratus, five main phases can be subdivided: 1) wound closure, 2) blastema formation, 3) blastema differentiation, 4) resegmentation, and 5) growth, respectively elongation. Additionally, the described tripartite loop-like structure of the regenerating nervous system has not been reported for any other annelid taxon. In contrast, the regeneration of circular and longitudinal musculature originating from different groups of cells seems to be a general pattern in annelid regeneration.

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“…Anaesthetization and fixation protocols have been shown to induce pseudo-differences in the gross morphology of some sabellids [16] and Knight-Jones & Mackie [13] expressed particular concern over the distortion of “soft” characters, such as the collar, if the specimen was fixed within its tube. Moreover, their extensive capacity to regenerate [17] is also of concern for achieving accurate identification. The length of the branchial crown in relation to body length is often used in the early stages of the morphological key and relies on the assumption that it is full size at the time of examination when in fact sabellids are known to readily autotomize their crowns following predation or a mechanical stress [18; pers.…”

Section: Discussionmentioning

confidence: 99%

Managing the Marine Aquarium Trade: Revealing the Data Gaps Using Ornamental Polychaetes

et al. 2012

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The marine aquarium industry has great potential to generate jobs in low-income coastal communities creating incentives for the maintenance of a healthy coral reef, if effectively managed. In the absence of current monitoring or legislation to govern the trade, baseline information regarding the species, number and source location of animals traded is missing despite being critical for its successful management and sustainability. An industry assessment to establish the number and provenance of species of ornamental polychaetes (sabellids and serpulids) traded was undertaken across UK wholesalers and retailers. Six geographical regions exporting fan worms were identified. Singapore contributed the highest percentage of imports, but of only one worm “type” whereas Bali, the second largest source, supplied five different worm “types”. Over 50% of UK retailers were supplied by one wholesaler while the remainder were stocked by a mixture of one other wholesaler and/or direct imports from the source country. We estimate that up to 18,500 ornamental polychaetes (16,980 sabellids and 1,018 serpulids) are sold annually in the UK revealing a drastic underestimation of currently accepted trade figures. Incorrect identification (based on exporting region or visual characteristics) of traded animals exacerbates the inaccuracy in market quantification, although identification of preserved sabellids using published keys proved just as inconclusive with high within-species variability and the potential for new or cryptic species. A re-description of the polychaete groups traded using a combination of molecular and morphological techniques is necessary for effective identification and market quantification. This study provides the first assessment of ornamental polychaetes but more importantly highlights the issues surrounding the collection of baseline information necessary to manage the aquarium trade. We recommend that future management should be community based and site-specific with financial and educational support from NGOs, local governments and industry members.

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Regeneration as a novel method to culture marine ornamental sabellids

Cited by 23 publications

References 23 publications

A taxonomic guide to the fanworms (Sabellidae, Annelida) of Lizard Island, Great Barrier Reef, Australia, including new species and new records

A taxonomic guide to the fanworms (Sabellidae, Annelida) of Lizard Island, Great Barrier Reef, Australia, including new species and new records

Structure and anterior regeneration of musculature and nervous system inCirratuluscf.cirratus(Cirratulidae, Annelida)

Managing the Marine Aquarium Trade: Revealing the Data Gaps Using Ornamental Polychaetes

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