Observations On the Occurrence of Conchoderma Virgatum (Spengler) (Cirripedia) On Diodon Hystrix Linnaeus (Pisces)

Balakrishnan, K. P.

doi:10.1163/156854068x00269

Cited by 11 publications

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“…It has been suggested that the secretion of mucus by the fish can prevent direct settlement of the cyprids on the skin of fishes (Balakrishnan, 1969). However, Balistes species have a markedly ossified skin with little mucus (Hughes, 1967), which, in general, thus might favour settlement of barnacles on these fishes.…”

Section: Discussionmentioning

confidence: 99%

“…They can obtain their food supply from the movement produced by the fish, like Diodon hystrix (L., 1758) with two specimens of Conchoderma virgatum attached to the lateral spines near the pectoral fin (Balakrishnan, 1969). In another case, barnacles were present in a tight group on the upper surface of the bill of a swordfish (Beckett, 1968).…”

Section: Discussionmentioning

confidence: 99%

“…Direct attachment of C. virgatum on fish has been recorded on a few species, namely on hard substratum (e.g., spines; dentary region; jaw; gill arch; bill of a swordfish) (Crozier, 1916;Beckett, 1968;Jones et al, 1968;Balakrishnan, 1969;Hastings, 1972;Aznar et al, 1994;Williams & Bunkley-Williams, 1996). Besides hard structures, direct settlement on the integral skin of fishes is rare and often associated with previous injuries or infections by parasitic copepods (Jones et al, 1968).…”

Section: Introductionmentioning

confidence: 99%

“…Besides hard structures, direct settlement on the integral skin of fishes is rare and often associated with previous injuries or infections by parasitic copepods (Jones et al, 1968). This is probably due to an inhibitory effect of the external mucous secretions of the fishes (Beckett, 1968;Jones et al, 1968;Balakrishnan, 1969).…”

Section: Introductionmentioning

confidence: 99%

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Macroscopic Lesions on the Grey Triggerfish, Balistes Capriscus (Pisces) Associated with the Presence of the Pedunculate Barnacle, Conchoderma Virgatum (Cirripedia, Thoracica)

Ramos¹,

Ruano²,

Jesus³

et al. 2010

Crustac

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Fifteen live specimens of Conchoderma virgatum were attached to a grey triggerfish (Balistes capriscus) caught in S.W. Portugal. The barnacles were distributed in three groups (right abdominal external face, anterior side of the insertion of the pelvic spine, and close to (5 mm) the left eye (on the lacrymal bone)). The specimens were very different in size, ranging from 2 mm to 18.9 mm (maximum capitular length, CL).The four largest barnacles (CL 16.4 mm) had egg lamellae. Signs of potential predation on the barnacles (rests of barnacles and half-cut cirri in a barnacle) were detected. The left-eye blindness of the grey trigger fish could have been caused by traumatic action performed by the barnacles that settled close to the eye. The skin surrounding the barnacle cluster attached to the right abdominal external face was inflamed. Skin lesions were of sub-acute or chronic nature and the gall-bladder dilatation was consistent with a prolonged status of injury. Both traumatic and inflammatory lesions could have contributed to the loss of body condition of the grey triggerfish. This study is the first report of C. virgatum in S.W. Portugal and the first record of attachment to a grey triggerfish. RESUMOForam observados quinze exemplares de Conchoderma virgatum fixos num pampo (Balistes capriscus) capturado na costa SW de Portugal continental. Os cirrípedes encontravam-se distribuídos em três grupos (face abdominal externa direita, face anterior da inserção da barbatana pélvica e 5 )

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Macroscopic Lesions on the Grey Triggerfish, Balistes Capriscus (Pisces) Associated with the Presence of the Pedunculate Barnacle, Conchoderma Virgatum (Cirripedia, Thoracica)

Ramos¹,

Ruano²,

Jesus³

et al. 2010

Crustac

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“…Conchoderma virgatum has been found on animate objects, directly or indirectly attached to the host (Dawson, 1969;Hastings, 1972). In the case of direct attachment to fish, the barnacles attach to special hard structures of the host, such as the sword of a swordfish, the jaw of a shark, the dentary region of a suckerfish, the fin of a halfbeak, the lesion of a sailfish, and the spine of Diodon (Crozier, 1916;Jones et al, 1968;Beckett, 1968;Dawson, 1969;Balakrishnan, 1969). Jones et al (1968) and Balakrishnan (1969), considering the rarity of settling directly on a fish, proposed an inhibitory effect of the fishes' external mucous secretions.…”

Section: Discussionmentioning

confidence: 99%

Distribution of Two Species of Conchoderma (Cirripedia : Thoracica) over the Body of a Sea Snake, Laticauda semifasciata (Reinwardt), from the Kii Peninsula, Southwestern Japan

Yamato¹,

Yusa²,

Tanase³

1996

Publ. SMBL

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Two species of Conchoderma were found on a sea snake, Laticauda semifasciata (Reinwardt), collected on the west coast of the Kii Peninsula. A total of 223 individuals of C. virgatum and 6 of C. hunteri in 19 clumps were attached to the snake's body. The barnacles ranged in size from 1.4 mm (cypris larvae) to 18.2 mm in capitulum length in C. virgatum, and from 10.7 to 14.4 mm in C. hunteri. The size of the smallest gravid individuals in both species was between 10 and 11 mm. The distribution of C. virgatum on the snake was non-random both longitudinally and dorso-ventrally, with more barnacles in the posterior region and on the ventral side of the snake, respectively. The proportion of gravid individuals increased towards the tail.

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Barnacle bonding: Morphology of attachment of Xenobalanus globicipitis to its host Tursiops truncatus

Pugliese

Böttger

Fish

2012

Journal of Morphology

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Xenobalanus globicipitis, a unique type of small pseudo-stalked barnacle occurs on the appendages of cetaceans, including the common bottlenose dolphin Tursiops truncatus. In this study, we examined attachment structures of X. globicipitis and modifications to the skin of T. truncatus in areas of attachment compared to skin nearby an attachment site. Barnacles and their six calcareous footplates were measured for their length and width. There was a positive correlation of barnacle width and length to footplate width and length. The thickness of the stratum corneum increased significantly in areas of attachment compared to skin nearby a footplate. The mitotic stratum germinativum at the base of the dermal papillae did not change significantly in areas of attachment compared to skin nearby a footplate. The stratum germinativum lining the lateral walls of the dermal papillae was significantly thicker in areas of skin nearby a footplate compared to in areas of attachment. Skin of T. truncatus nearby a footplate, displayed dermal papillae extending from the dermis and pointing roughly perpendicular to the epidermal stratum corneum. At sites of X. globicipitis attachment, the dermal papillae were forced to extend laterally, parallel to the stratum corneum, and the dermal papillae length to width ratio at an attachment site was significantly higher than on skin near an attachment site. Our results show that attachment of X. globicipitis through production of footplates organized into calcareous rings, leads to a thickened stratum corneum of the epidermis, a thinner lateral mitotic stratum germinativum and displaced structures of the upper dermis. These resulting modifications to the epidermis and dermis of the host may add to securing barnacle attachment to its host.

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Observations On the Occurrence of Conchoderma Virgatum (Spengler) (Cirripedia) On Diodon Hystrix Linnaeus (Pisces)

Cited by 11 publications

References 0 publications

Macroscopic Lesions on the Grey Triggerfish, Balistes Capriscus (Pisces) Associated with the Presence of the Pedunculate Barnacle, Conchoderma Virgatum (Cirripedia, Thoracica)

Macroscopic Lesions on the Grey Triggerfish, Balistes Capriscus (Pisces) Associated with the Presence of the Pedunculate Barnacle, Conchoderma Virgatum (Cirripedia, Thoracica)

Distribution of Two Species of Conchoderma (Cirripedia : Thoracica) over the Body of a Sea Snake, Laticauda semifasciata (Reinwardt), from the Kii Peninsula, Southwestern Japan

Barnacle bonding: Morphology of attachment of Xenobalanus globicipitis to its host Tursiops truncatus

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