The Effect of the Mesoparasitic Barnacle Anelasma on the Development of Reproductive Organs of Deep-sea Squaloid Sharks, Centroscyllium and Etmopterus

Specimens of the mesoparasitic barnacle, Anelasma, were found attached to several host deep-sea squaloid sharks, Centroscyllium fabricii from off Greenland, Etmopterus princeps from the Canary Islands, and Etmopterus unicolor and Etmopterus granulosus from Three Kings Ridge and Louisville Ridge near...

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Veröffentlicht in:Environmental biology of fishes Jg. 59; H. 3; S. 329 - 339
Hauptverfasser: Yano, Kazunari, Musick, John A.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Dordrecht Springer 01.11.2000
Springer Nature B.V
Schlagworte:
Agnatha. Pisces
Anelasma
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Centroscyllium fabricii
Deep sea
Etmopterus granulosus
Etmopterus princeps
Etmopterus unicolor
Females
Fundamental and applied biological sciences. Psychology
Marine
Parasites
Sharks
Vertebrata
ASE, Atlantic, Canary Is
ANW, Greenland
PSE, South Pacific, Three Kings Ridge
PSE, South Pacific, Louisville Ridge
Host parasite relation
Sexual development
Interspecific comparison
Parasite
Host
Crustacea
Marine environment
Vertebrata
Sexual maturity
Arthropoda
Pisces
Body size
Cirripedia
Inhibition
Chondrichthyes
Invertebrata
ISSN:0378-1909, 1573-5133
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Zusammenfassung:Specimens of the mesoparasitic barnacle, Anelasma, were found attached to several host deep-sea squaloid sharks, Centroscyllium fabricii from off Greenland, Etmopterus princeps from the Canary Islands, and Etmopterus unicolor and Etmopterus granulosus from Three Kings Ridge and Louisville Ridge near New Zealand. One to three parasites were partially embedded in each host shark in the head, mouth, bases of 1st and 2nd dorsal fins, pectoral and pelvic fins, caudal fin, abdomen or claspers. Testes and claspers of parasitized mature-sized males were less developed than those of non-parasitized mature males. The ova of parasitized females of mature size were small and whitish-yellow compared to the large yellow ova of non-parasitized mature females. The number of mature ova in a parasitized specimen was lower than expected in relation to a non-parasitized individual of the same size. Attachment of parasitic barnacles appeared to retard the development of reproductive organs of host sharks.
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ISSN:0378-1909
1573-5133
DOI:10.1023/A:1007649227422