Introduction to Parasitic Crustacea: State of Knowledge and Future Trends

Smit, Nico J.; Bruce, Niel L.; Hadfield, Kerry A.

doi:10.1007/978-3-030-17385-2_1

Cited by 17 publications

(22 citation statements)

References 3 publications

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“…Given an individual parasite is large, relative to its small hosts (a 1:10 ratio of gnathiid to a newly recruited ambon damselfish), it is not surprising that we observed a significant reduction in the effectiveness of fast-start escape behaviour in the ambon damselfish as a result of infection. Aside from gnathiid and cymothoid isopods, other isopods are known to feed on blood or fluids of marine fishes, including cirolanid, coralanid and aegeid isopods (Poore and Bruce, 2012;Smit et al, 2019).…”

Section: Cortisol Analysismentioning

confidence: 99%

Parasite infection directly impacts escape response and stress levels in fish

Allan

Illing

Fakan

et al. 2020

Journal of Experimental Biology

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Parasites can account for a substantial proportion of the biomass in marine communities. As such, parasites play a significant ecological role in ecosystem functioning via host interactions. Unlike macropredators, such as large piscivores, micropredators, such as parasites, rarely cause direct mortality. Rather, micropredators impose an energetic tax, thus significantly affecting host physiology and behaviour via sublethal effects. Recent research suggests that infection by gnathiid isopods (Crustacea) causes significant physiological stress and increased mortality rates. However, it is unclear whether infection causes changes in the behaviours that underpin escape responses or changes in routine activity levels. Moreover, it is poorly understood whether the cost of gnathiid infection manifests as an increase in cortisol. To investigate this, we examined the effect of experimental gnathiid infection on the swimming and escape performance of a newly settled coral reef fish and whether infection led to increased cortisol levels. We found that micropredation by a single gnathiid caused fast-start escape performance and swimming behaviour to significantly decrease and cortisol levels to double. Fast-start escape performance is an important predictor of recruit survival in the wild. As such, altered fitness-related traits and short-term stress, perhaps especially during early life stages, may result in large scale changes in the number of fish that successfully recruit to adult populations.

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Section: Cortisol Analysismentioning

confidence: 99%

Parasite infection directly impacts escape response and stress levels in fish

Allan

Illing

Fakan

et al. 2020

Journal of Experimental Biology

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“…Among the Monopisthocotylea Odhner, 1912, this tripartite association is known for two cases: the Udonellidae Taschenberg, 1879, with Udonella spp. on parasitic copepods of various fishes [ 73 ] and the Capsalidae Baird, 1853 with Capsala biparasitica (Goto, 1894) on a copepod on the gills of the tuna Thunnus albacares (Bonnaterre, 1788) [ 28 ].…”

Section: Discussionmentioning

confidence: 99%

Triple barcoding for a hyperparasite, its parasitic host, and the host itself: a study of Cyclocotyla bellones (Monogenea) on Ceratothoa parallela (Isopoda) on Boops boops (Teleostei)

et al. 2021

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Cyclocotyla bellones Otto, 1823 (Diclidophoridae) is a monogenean characterised by an exceptional way of life. It is a hyperparasite that attaches itself to the dorsal face of isopods, themselves parasites in the buccal cavity of fishes. In this study, Cy. bellones was found on Ceratothoa parallela (Otto, 1828), a cymothoid isopod parasite of the sparid fish Boops boops off Algeria in the Mediterranean Sea. We provide, for the first time, molecular barcoding information of a hyperparasitic monogenean, the parasitic crustacean host, and the fish host, with COI sequences.

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“…Amongst fish-parasitic isopods, cymothoid isopods, including some species also known as “tongue replacers” [ 88 ], are frequently hosts of monopisthocotylean monogeneans, mainly udonellids (see [ 88 ]) and of polyopisthocotylean monogeneans, mainly diclidophorids ( Table 1 ).…”

Section: Introductionmentioning

confidence: 99%

Truly a hyperparasite, or simply an epibiont on a parasite? The case of Cyclocotyla bellones (Monogenea, Diclidophoridae)

2022

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Cyclocotyla bellones Otto, 1823 (Monogenea, Diclidophoridae) is one of the few monogenean species reported as hyperparasitic: the worms dwell on cymothoid isopods, themselves parasites of the buccal cavity of fishes. We present here observations based on newly collected monogenean specimens from Ceratothoa parallela (Otto, 1828), an isopod parasite of Boops boops off Algeria and also investigated its diet to address whether Cy. bellones is indeed a hyperparasite, i.e., whether it feeds on the isopod. We also compared the body shape of various monogeneans belonging to the same family as Cy. bellones, the Diclidophoridae, including Choricotyle cf. chrysophryi Van Beneden & Hesse, 1863, collected from Pagellus acarne off Algeria. No morphological character of the anterior organs suggested any special adaptation in Cy. bellones to the perforation of the crustacean cuticle. The wall of the oesophagus and of the intestine of Cy. bellones was lined with a dark pigment similar to what is usually observed in haematophagous polyopisthocotyleans, and which is derived from ingested fish blood. We noticed that an anterior elongate stem exists only in diclidophorids dwelling on parasitic isopods and never in those attached to the gills. We hypothesize that the anterior stem of the body of Cy. bellones is an anatomical adaptation for the monogenean to feed on the fish while dwelling on the isopod. We thus consider that Cy. bellones is an epibiont of the parasitic crustacean, as it uses it merely as an attachment substrate, and is not a true hyperparasite.

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Introduction to Parasitic Crustacea: State of Knowledge and Future Trends

Cited by 17 publications

References 3 publications

Parasite infection directly impacts escape response and stress levels in fish

Parasite infection directly impacts escape response and stress levels in fish

Triple barcoding for a hyperparasite, its parasitic host, and the host itself: a study of Cyclocotyla bellones (Monogenea) on Ceratothoa parallela (Isopoda) on Boops boops (Teleostei)

Truly a hyperparasite, or simply an epibiont on a parasite? The case of Cyclocotyla bellones (Monogenea, Diclidophoridae)

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