Integumental damage caused by <i>Dolops ranarum</i> (Stuhlmann, 1891) (Crustacea: Branchiura) to <i>Clarias gariepinus</i> (Burchell), with reference to normal histology and wound‐inflicting structures

Avenant‐Oldewage, Annemariè

doi:10.1111/j.1365-2761.1994.tb00262.x

Cited by 19 publications

(24 citation statements)

References 13 publications

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“…Although information on elasmobranch healing is limited, several tissue response studies have been conducted on teleost fishes. These studies were concerned specifically with the healing of a tag wound or parasite-induced wound (Joy & Jones, 1973;Roberts et al, 1973a,b,c;Vogelbein & Overstreet, 1987;Avenant-Oldewage, 1994;Bryan & Ney, 1994) or on tissue repair after an acute wound (Mawdesley-Thomas & Bucke, 1973;Bullock et al, 1978).…”

Section: Introductionmentioning

confidence: 99%

Analysis of tissue responses to fin tagging in Australian carcharhinids

Heupel

Simpfendorfer²,

Bennett

1998

Journal of Fish Biology

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Tissue responses to the application of Rototags and Jumbo Rototags in the first dorsal fin of Carcharhinus melanopterus, C. obscurus and C. plumbeus were examined. The acute response included tissue tearing and haemorrhage and was present by 5 days post-tagging. The intermediate response had begun by 20 days post-tagging and continued beyond 207 days. This response involved decreased red blood cell activity as the inflammatory response commenced. The chronic response had begun by 301 days and was complete by 553 days with a layer of fibrous connective tissue walling off the tag. External damage to the fin was caused by continued abrasion by the tag. Repair scales were observed at 242 days using scanning electron microscopy and were confirmed histologically in 61-and 553-day samples. Repair scales were not seen in areas of continuous abrasion. No infection was observed in tissues surrounding the wound. Disruption of the fin surface was observed due to abrasion by the tag, but did not appear to cause a severe tissue reaction. The tissue responses observed were consistent with a normal, but relatively slow, healing in the vicinity of the tag wound. Use of Rototags or Jumbo Rototags appears to be an efficient way of marking elasmobranchs with minimal damage to the shark. 1998 The Fisheries Society of the British Isles

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Section: Introductionmentioning

confidence: 99%

Analysis of tissue responses to fin tagging in Australian carcharhinids

Heupel

Simpfendorfer²,

Bennett

1998

Journal of Fish Biology

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“…This type of damage might be the result of attack by trematode larvae (metacercaria), branchiuran (Avenant‐Oldewage 1994) and copepod (Paperna 1996) crustaceans, or leeches, which have the strategy of penetration between the scales or of attaching posterior to the gill slit. In this position the parasite is sheltered from the water current and is provided with numerous blood vessels for nutrition.…”

Section: Resultsmentioning

confidence: 99%

The earliest evidence of host–parasite interactions in vertebrates

et al. 2009

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Luk ß evics, E., Lebedev, O. A., Mark-Kurik, E. and Karataj u te-Talimaa, V. 2009. The earliest evidence of host-parasite interactions in vertebrates. -Acta Zoologica (Stockholm) 90 (Suppl. 1): 335-343Traces of parasite action have been discovered in the Middle-Upper Devonian fish from Estonia, Latvia and European Russia. Such traces are known in heterostracan Psammolepis venyukovi , antiarchs Asterolepis radiata and Bothriolepis ciecere , sarcopterygians Holoptychius sp., Ventalepis ketleriensis and Eusthenodon sp. nov. The traces include evidence of parasitic fixation and penetration as well as dwelling traces. Pathologies are developed as (1) round fossulae on the external surface of bones and scales; (2) oval fossulae with a slight elevation in the centre of the pit; (3) hollow swellings (possible galls); (4) openings (perforations) that have been repaired to various degrees; (5) variously shaped buttresses on the visceral surface of sarcopterygian scales; and (6) porous spongy formations on the non-overlapped surface of sarcopterygian scales. The round fossulae in sarcopterygian, placoderm and psammosteid skeletal elements could be produced by parasites that are similar to copepod crustaceans. Gall formation in Asterolepis is most likely to be caused by a larva, possibly of a trematode. The perforations of scales (and dermal bones) might arise from the attacks of ectoparasites (copepods?) or different worms. The spongy formations on the Holoptychius scales could be the result of invasion of a unicellular parasite.Erv i ns Luk ß

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“…Another possible reason for a relatively slow healing response may be the nature of the wound. Most studies on teleost healing responses have dealt with a single acute wound inflicted by a parasite (Avenant-Oldewage, 1994) or an incision made by researchers (Bullock et al, 1978). These acute wounds have been shown to heal within 9-12 h depending on water temperatures (Bullock et al, 1978).…”

Section: Discussionmentioning

confidence: 99%

“…This movement of scales, coupled with the production of a mucous layer, helps cover the wound site quickly and effectively while underlying tissue is repaired. Replacement scales are shown to be larger than normal scales in teleosts (Avenant-Oldewage, 1994) as well as elasmobranchs (Reif, 1978). Reif (1978) also found replacement scales were of variable shapes and arranged in irregular patterns.…”

Section: Introductionmentioning

confidence: 89%

Histology of dart tag insertion sites in the epaulette shark

Heupel

Bennett

1997

Journal of Fish Biology

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Samples of dermal and epidermal tissues of epaulette sharks Hemiscyllium ocellatum were examined histologically to assess damage caused by tagging. Tissues from around tag sites were removed at time intervals ranging from 100 min to 284 days post-tagging. These samples showed acute and chronic responses to tagging. Acute responses consisted of localized tissue breakdown and haemorrhaging, and occurred within the first few hours after tag insertion. At 10 h post-tagging, an intermediate response was apparent. This phase was characterized by further haemorrhaging and red and white blood cell movement into the wound area. The chronic response observed in the 10-284-day post-tagging samples was characterized by fibrous tissue formation to sequester the tag. This tissue presumably protects the adjacent musculature from further trauma produced by movement of the tag and provides a continuous barrier between the internal and external milieu. Tissue repair appeared to progress consistently in all specimens and no secondary infections at the tag site were seen. Tagging produced only localized tissue disruption and did not appear to be detrimental to the long term health of individual sharks. Our findings show that spaghetti style dart tagging is an acceptable method for marking individuals (40-75+ cm total length) of this species. 1997 The Fisheries Society of the British Isles

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Integumental damage caused by Dolops ranarum (Stuhlmann, 1891) (Crustacea: Branchiura) to Clarias gariepinus (Burchell), with reference to normal histology and wound‐inflicting structures

Cited by 19 publications

References 13 publications

Analysis of tissue responses to fin tagging in Australian carcharhinids

Analysis of tissue responses to fin tagging in Australian carcharhinids

The earliest evidence of host–parasite interactions in vertebrates

Histology of dart tag insertion sites in the epaulette shark

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