Infestation by Pseudione Humboldtensis (Bopyridae) in the Squat Lobsters Cervimunida Johni and Pleuroncodes Monodon (Galatheidae) off Northern Chile

González, María Teresa; Acuña, Enzo

doi:10.1651/c-2482

Cited by 25 publications

(37 citation statements)

References 16 publications

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“…The growth of infected and uninfected specimens was congruent until 14 mm CL, diverging after this length in such a way that parasitized M. rutllanti had lower body weights than uninfected specimens at the same carapace length. The same was observed in males and females of galatheid Cervimunida johni parasitized by Pseudione humboldtensis, where significantly lower body weight was shown compared to uninfected individuals (González & Acuña, 2004).…”

Section: Discussionsupporting

confidence: 72%

Growth and reproduction of Munida rutllanti (Decapoda: Anomura: Galatheidae) and impact of parasitism by Pleurocrypta sp. (Isopoda: Bopyridae) in the Adriatic Sea

2010

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Relative growth and reproductive biology of Munida rutllanti were investigated for the first time in the Adriatic Sea. A total of 938 individuals were analysed. Sex-ratio differed statistically from the expected 1:1. Six individuals exhibited secondary sex characteristics of both males and females. Carapace length of males ranged from 10.5 to 21.5 mm, while in females it ranged from 11.2 to 19.4 mm. Sexual dimorphism was observed in seven morphometric characters. Ovigerous females were first observed in summer and later in autumn with higher frequency. Realized fecundity showed wide variation (273-3250 eggs) and positive correlation between the brood and female size. An epicaridean isopod Pleurocrypta sp., parasitizing the gill chamber of both sexes was isolated and its effect on the oogenesis was studied by histological examination of host reproductive system. Growth inhibition, modification of secondary sex characteristics, as well as retardation of oogenesis and failure of oviposition, are repercussions of bopyrid infestation. Given the small prevalence (7.85%) of the bopyrid in the M. rutllanti Adriatic population, we assume that for the moment there is no severe effect on the host population dynamic.

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Section: Discussionsupporting

confidence: 72%

Growth and reproduction of Munida rutllanti (Decapoda: Anomura: Galatheidae) and impact of parasitism by Pleurocrypta sp. (Isopoda: Bopyridae) in the Adriatic Sea

2010

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“…Parasite prevalence was high considering the low number of juveniles analyzed. The prevalence values of this study are high when compared to those reported by González & Acuña (2004) for the galatheid crustaceans Cervimunida johni and Pleuroncodes monodon off northern Chile, which varied between 6.8 and 13.6% for the former species and between 0.6 to 18.2% for the latter.…”

Section: Infestations With P Tubertculatacontrasting

confidence: 57%

Infestation of Pseudione tuberculata (Isopoda: Bopyridae) on juveniles of Lithodes santolla (Magellan region, Chile): a spatial mesoscale analysis

Cañete

Díaz-Ochoa

Figueroa

et al. 2017

lajar

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ABSTRACT. We document latitudinal patterns of infestation of the bopyrid parasite isopod Pseudione tuberculata on southern king crab Lithodes santolla juveniles (20-77 mm carapace length) recruited to fishing grounds in the southern Chilean fjord system. Seven hundred and fifty individuals were collected by semiautonomous diving in 11 of 21 sampling locations in the study area, along the western margin of the Magellan region between August and October 2013.The prevalence of P. tuberculata varied between 0 and ~22%, and displayed a spatial pattern associated with three areas: i) northern Beagle Channel (10 to ~22%; lengths between 37 and 47 mm), ii) northwestern Navarino Island without infestations (0%; 26-55 mm), and iii) Piazzi IslandCapitán Aracena Island (0-12%; 50-77 mm). Infestations were independent of host sex, while parasite prevalence decreased with host length. No parasites were observed on crabs longer than 60 mm. A comparison of slopes between linearized length-weight regressions suggests that parasitized individuals had lower weight growth than uninfested individuals. Both southern king crab juvenile density and P. tuberculata prevalence were higher in fishing areas towards Beagle Channel where previous research reported lower average surface water temperatures (<6.5°C) and higher surface water salinity (>30). The study area covers five zones relevant for the conservation and protection of sub Antarctic biodiversity, and provides opportunities for large-scale geographic studies of the host-parasite relationship.

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“…Parasite prevalence was high considering the low number of juveniles analysed. Prevalence values of this study are high when compared with infestation levels reported by González & Acuña (2004) for the galatheid crustaceans Cervimunida johni and Pleuroncodes monodon off the northern coast of Chile, which varied between 6.8% and 13.6% for the former species and between 0.6 to 18.2% for the latter, based on 1460 and 1677 specimens analysed, respectively.…”

Section: Discussioncontrasting

confidence: 42%

“…Rousset et al (1996) suggested that a decrease in the parasitic load or its dispersion with host age can be considered as evidence of host mortality induced by the parasite. According to González & Acuña (2004), the strong decrease of bopyrid prevalence in larger sizes of the host could be a consequence of host mortality induced by the parasite or by growth inhibition of the host. However, they also suggested that the parasite could be lost after several ecdyses.…”

Section: Miranda-vargas and Roccataliatamentioning

confidence: 99%

Pseudione tuberculata Richardson, 1904 (Isopoda: Bopyridae): a parasite of juveniles of the king crab Lithodes santolla (Molina, 1782) (Anomura: Lithodidae) in the Magellan Strait, Chile

Cañete

Cárdenas

Oyarzún

et al. 2008

Rev. biol. mar. oceanogr.

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Infestation by Pseudione Humboldtensis (Bopyridae) in the Squat Lobsters Cervimunida Johni and Pleuroncodes Monodon (Galatheidae) off Northern Chile

Cited by 25 publications

References 16 publications

Growth and reproduction of Munida rutllanti (Decapoda: Anomura: Galatheidae) and impact of parasitism by Pleurocrypta sp. (Isopoda: Bopyridae) in the Adriatic Sea

Growth and reproduction of Munida rutllanti (Decapoda: Anomura: Galatheidae) and impact of parasitism by Pleurocrypta sp. (Isopoda: Bopyridae) in the Adriatic Sea

Infestation of Pseudione tuberculata (Isopoda: Bopyridae) on juveniles of Lithodes santolla (Magellan region, Chile): a spatial mesoscale analysis

Pseudione tuberculata Richardson, 1904 (Isopoda: Bopyridae): a parasite of juveniles of the king crab Lithodes santolla (Molina, 1782) (Anomura: Lithodidae) in the Magellan Strait, Chile

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