Effects of Parasitic Crustacea on Hosts

Johnson, Stewart C.; Kabata, Z.; Nowak, Barbara F.

doi:10.1007/978-3-030-17385-2_6

Cited by 14 publications

(13 citation statements)

References 184 publications

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“…One possible explanation for this size cutoff is that the parasite's presence may reduce the fitness of these alternate hosts, making them more susceptible to other pathogens or predation (Binning et al., 2014; Binning et al., 2013). Hosts suffer hemorrhaging and physical damage to tissues (Huizinga, 1972) and an energy deficit due to the resources the parasite is taking from it (Johnson et al., 2019). Hosts may also suffer from specific limitations on oxygen demand from gill damage (Rameshkumar & Ravichandran, 2013), limits to food ingestion when the tongue is parasitized (Chávez López et al., 2005) or limits to locomotive ability when body cavity parasites impact muscular movement or external parasites increase drag (De Lima et al., 2005).…”

Section: Discussionmentioning

confidence: 99%

Habitat and host associations of the fish‐burrowing parasite Artystone minima (Cymothoidae: Isopoda) in eastern Amazonia

et al. 2020

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Cymothoid fish parasites settle on hosts in ways that may impact fish health and energetics. High abundances of Artystone minima observed in Nannostomus beckfordi from the Jeju River in eastern Amazonia were investigated to answer the following questions: (a) What factors are associated with the high prevalence at this locality?; (b) Is high abundance associated with co‐infestation of alternative hosts?; and (c) Is parasite presence associated with host species growth and/or reproduction? Fish assemblages were sampled quarterly (August 2017–May 2018) from five habitats along with environmental data. Parasitic indices were calculated, and parasite presence used to evaluate differences in growth of hosts using analysis of covariance considering host sex and sampling season (wet vs. dry). Parasites were only abundant in one of the habitats, a large, shallow backwater bay with macrophytes. Abiotic environmental factors (flow and depth) likely impact parasite transmission and are, therefore, particularly important in producing these local patterns. Two secondary hosts, Hyphessobrycon cf. rosaceus and Moenkhausia collettii, were found in the wet season. Based on host biology compared to other fish in the habitat, parasite infestation is inferred to be depth associated and long‐term infestation is apparently limited in alternative hosts. Parasite presence was significantly associated with reduced weight (standardized for length) of female Nannostomus beckfordi in the wet season. Furthermore, ovaries of non‐parasitized females from the wet season presented a range of maturation stages, while parasitized females were all immature, indicating a significant association of parasites with host reproductive capacity. Abstract in Portuguese is available with online material

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Section: Discussionmentioning

confidence: 99%

Habitat and host associations of the fish‐burrowing parasite Artystone minima (Cymothoidae: Isopoda) in eastern Amazonia

et al. 2020

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“…However, there is yet limited information on the effects that parasitic crustaceans have on their hosts at a population level, as well as on the indirect effects that they may have on species that interact with their hosts, i.e. community level effects (Johnson et al, 2019). This is true particularly for A. chicomendesi, E. turucuyus and E. berbicensis, which infests Amazonian fish.…”

Section: Discussionmentioning

confidence: 99%

Crustacean parasites of Leporinus affinis, an Anostomidae fish from the Brazilian Amazon

Vasconcelos

Sá-Oliveira

Salomão

et al. 2020

Rev. Bras. Parasitol. Vet.

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Abstract This study investigated the fauna of ectoparasitic crustaceans in Leporinus affinis from Reservoir Coaracy Nunes, in eastern Amazon (Brazil), as well as the parasite-host interactions. The mouth, gills and tegument of 50.9% of the fish examined were parasitized by Argulus chicomendesi, Ergasilus turucuyus and Excorallana berbicensis, and a total of 118 parasites were collected. The dominance was found for E. berbicensis and the higher infestation levels were caused by E. berbicensis on the body surface of the hosts, but E. turucuyus had the highest prevalence on the gills of this host. The cluster analysis revealed higher similarity in the infestations by E. berbicensis and A. chicomendesi in relation to infestation site in hosts. Host sex and relative condition factor (Kn) were not influenced by moderate parasitism, but the abundance of parasites presented negative correlation with weight and Kn of the fish. This is the first study on the parasites of L. affinis showing low species diversity, with moderate prevalence and low parasite abundance.

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“…Shellfish and marine crustaceans such as the noble crayfish ( Astacus astacus ) (Halder and Ahne, 1988), the green shore crab ( Carcinus maenas) , the planktonic crustacean Daphnia magna and the shrimp Penaeus japonicus (Mortensen et al., 1993) have been reported to be potential vectors for IPNV. Also, IPNV has been detected in the copepod sea louse ( Lepeophtheirus salmonis ) although there is no evidence that copepods can serve as vectors of any virus in field studies (Johnson et al., 2004) promoted copepod control (Overstreet et al., 2009). In addition, piscivorous bird species, which prey upon IPNV‐infected rainbow trout, were shown to excrete the virus (McAllister and Owens, 1992).…”

Section: Assessmentmentioning

confidence: 99%

Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): infectious pancreatic necrosis (IPN)

Nielsen¹,

Álvarez²,

Calistri³

et al. 2023

EFS2

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Infectious pancreatic necrosis (IPN) was assessed according to the criteria of the Animal Health Law (AHL), in particular, the criteria of Article 7 on disease profile and impacts, Article 5 on its eligibility to be listed, Annex IV for its categorisation according to disease prevention and control rules as in Article 9, and Article 8 for listing animal species related to IPN. The assessment was performed following a methodology previously published. The outcome reported is the median of the probability ranges provided by the experts, which indicates whether each criterion is fulfilled (lower bound ≥ 66%) or not (upper bound ≤ 33%), or whether there is uncertainty about fulfilment. Reasoning points are reported for criteria with an uncertain outcome. According to the assessment here performed, it is uncertain whether IPN can be considered eligible to be listed for Union intervention according to Article 5 of the AHL (50-90% probability). According to the criteria in Annex IV, for the purpose of categorisation related to the level of prevention and control as in Article 9 of the AHL, the AHAW Panel concluded that IPN does not meet the criteria in Section 1 (Category A; 0-1% probability of meeting the criteria) and it is uncertain whether it meets the criteria in Sections 2, 3, 4 and 5 (Categories B, C, D and E; 33-66%, 33-66%, 50-90% and 50-99% probability of meeting the criteria, respectively). The animal species to be listed for IPN according to Article 8 criteria are provided.

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Effects of Parasitic Crustacea on Hosts

Cited by 14 publications

References 184 publications

Habitat and host associations of the fish‐burrowing parasite Artystone minima (Cymothoidae: Isopoda) in eastern Amazonia

Habitat and host associations of the fish‐burrowing parasite Artystone minima (Cymothoidae: Isopoda) in eastern Amazonia

Crustacean parasites of Leporinus affinis, an Anostomidae fish from the Brazilian Amazon

Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): infectious pancreatic necrosis (IPN)

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