Caligus aff. mutabilis Wilson, 1905

Soler-Jimenez, Lilia C., Morales-Serna, F. Neptali, Aguirre-Macedo, Ma. Leopoldina, McLaughlin, John P., Jaramillo, Alejandra G., Shaw, Jenny C., James, Anna K., Hechinger, Ryan F., Kuris, Armand M., Lafferty, Kevin D. & Vidal-Martinez, Victor M., 2019, Parasitic copepods (Crustacea, Hexanauplia) on fishes from the lagoon flats of Palmyra Atoll, Central Pacific, ZooKeys 833, pp. 85-106: 85

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Caligus aff. mutabilis Wilson, 1905


Caligus aff. mutabilis Wilson, 1905  

Type host.

Centropristis striata   (as Centropristes striatus   ) (Linnaeus) ( Serranidae   ).

Other host and localities.

Centropristis striata   (as Centropristes striatus   ) ( Serranidae   ) from North American waters ( Wilson 1905). Acanthocybium   sp., Euthynnus   sp., Sarda   sp., Scomberomorus   sp., and Thunnus   sp. (all Scombridae   ) from Colombia; Archosargus rhomboidalis   (Linnaeus) ( Sparidae   ), Chaetodipterus faber   (Broussonet) ( Ephippidae   ), Mycteroperca microlepis   (Goode & Bean), Scomberomorus brasiliensis   Collette, Russo & Zavala-Camin, Scomberomorus maculatus   (Mitchill) ( Scombridae   ) and Trachinotus goodei   Jordan & Evermann ( Carangidae   ) from Brazil; Balistes   sp. ( Balistidae   ), Calamus brachysomus   (Lockington) ( Sparidae   ), Centropomus   sp. ( Centropomidae   ), Chaetodipterus zonatus   (Girard) ( Ephippidae   ), Epinephelus labriformis   (Jenyns) ( Serranidae   ), Hoplopagrus guentherii   Gill ( Lutjanidae   ), Katsuwonus pelamis   (Linnaeus) ( Scombridae   ), Kyphosus elegans   (Peters) ( Kyphosidae   ), Lutjanus guttatus   (Steindachner), Lutjanus peru   (Nichols & Murphy) ( Lutjanidae   ), Menticirrhus undulatus   (Girard) ( Sciaenidae   ), Microlepidotus brevipinnis   (Steindachner) ( Haemulidae   ), Mugil cephalus   (Linnaeus) ( Mugilidae   ), Paralabrax clathratus   (Girard), Paralabrax maculatofasciatus   (Steindachner), Paralabrax nebulifer   (Girard) (all Serranidae   ), Sarda chiliensis   (Cuvier), Scomberomorus sierra   Jordan & Starks ( Scombridae   ) and Selene orstedii   Lütken ( Carangidae   ) from Mexican Pacific; S. brasiliensis   from Costa Rica; Scomberomorus cavalla   (Cuvier) ( Scombridae   ) from Surinam; S. maculatus   from Florida; Scomberomorus japonicus   from Campeche (Gulf of Mexico); E. labriformis   , Eucinostomus entomelas   Zahuranec ( Gerreidae   ), Haemulopsis axillaris   (Steindachner) ( Haemulidae   ), Paralabrax callaensis   Starks ( Serranidae   ), Chromis cyanea   (Poey) and Chromis multilineata   (Guichenot) ( Pomacentridae   ) from Ecuador ( Cressey and Cressey 1980, Luque and Tavares 2007, Gomes-Sanches et al. 2012, Morales-Serna et al. 2016).

Current hosts.

Lutjanus fulvus   and Lutjanus monostigma   (Cuvier) ( Lutjanidae   ).

Site of infection.


Prevalence and mean intensity.

15.4 and 1.75 ± 1.5 (n = 26) to L. fulvus   ; 16.6 and 2 (n = 6) to L. monostigma   .

Specimens deposited.

CHCM No. 567 (voucher) (1 vial, 1 specimen ♂) (from L. fulvus   ), CHCM No. 568 (voucher) (1 vial, 1 specimen ♂) (from L. monostigma   ). USNM No. 1550601 (voucher) (1 vial, 1 specimen ♂) (from L. monostigma   ).


Wilson (1905) observed that the genital complex of C. mutabilis   varies according to the age of the individuals as well as the developmental stage of the eggs. Also, this author described C. mutabilis   as having a short, 2-segmented abdomen. Later, Cressey and Cressey (1980) redescribed this species based on material collected from scombrid fish. These authors noted an incomplete 2-segmented abdomen and at least two other differences from the type specimens; however, such differences were not considered sufficient to propose a new species. Recently, Morales-Serna et al. (2014, 2015) reported C. mutabilis   from different host species in the Eastern Pacific, but a molecular analysis revealed relatively high intraspecific genetic divergence among the C. mutabilis   isolates. Our specimens share the morphological characteristics described by Cressey and Cressey (1980).