Expanded description of Lamproglena monodi (Copepoda: Lernaeidae), parasitizing native and introduced fishes in Brazil

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Abstract

An occurrence of the copepod Lamproglena monodi Capart, 1944, parasitizing freshwater fishes in Brazil is presented, along with new morphological data. This crustacean was originally described parasitizing several cichlids in Africa. In the present study, the crustaceans were collected from the body surface and gills of two fish species native to Brazil [Astronotus ocellatus (Agassiz, 1831) and Cichla ocellaris Bloch and Schneider, 1801] and two introduced species [Oreochromis niloticus (Linnaeus, 1758) and Tilapia rendalli (Boulenger, 1897)]. The Brazilian specimens exhibited some morphometric intraspecies differences in relation to the specimens from Congo-Kinshasa and Egypt.

Translated abstract

A ocorrência e novos dados morfológicos do copépode Lamproglena monodi Capart, 1944 parasitando peixes dulcícolas no Brasil são apresentados. Este crustáceo foi originalmente descrito parasitando vários ciclídeos da África. No presente trabalho, os crustáceos foram coletados das brânquias e superfície do corpo dos peixes nativos do Brasil [Astronotus ocellatus (Agassiz, 1831) e Cichla ocellaris Bloch e Schneider, 1801 e duas espécies introduzidas Oreochromis niloticus (Linnaeus, 1758) e Tilapia rendalli (Boulenger, 1897)]. Os espécimes coletados no Brasil apresentaram algumas diferenças morfométricas intraespecíficas em relação aos espécimes do Congo-Kinshasa e Egito.

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Hosts and parasites as aliens.

H Taraschewski (2006)

Over the past decades, various free-living animals (hosts) and their parasites have invaded recipient areas in which they had not previously occurred, thus gaining the status of aliens or exotics. In general this happened to a low extent for hundreds of years. With variable frequency, invasions have been followed by the dispersal and establishment of non-indigenous species, whether host or parasite. In the literature thus far, colonizations by both hosts and parasites have not been treated and reviewed together, although both are usually interwoven in various ways. As to those factors permitting invasive success and colonization strength, various hypotheses have been put forward depending on the scientific background of respective authors and on the conspicuousness of certain invasions. Researchers who have tried to analyse characteristic developmental patterns, the speed of dispersal or the degree of genetic divergence in populations of alien species have come to different conclusions. Among parasitologists, the applied aspects of parasite invasions, such as the negative effects on economically important hosts, have long been at the centre of interest. In this contribution, invasions by hosts as well as parasites are considered comparatively, revealing many similarities and a few differences. Two helminths, the liver fluke, Fasciola hepatica, of cattle and sheep and the swimbladder nematode, Anguillicola crassus, of eels are shown to be useful as model parasites for the study of animal invasions and environmental global change. Introductions of F. hepatica have been associated with imports of cattle or other grazing animals. In various target areas, susceptible lymnaeid snails serving as intermediate hosts were either naturally present and/or were introduced from the donor continent of the parasite (Europe) and/or from other regions which were not within the original range of the parasite, partly reflecting progressive stages of a global biota change. In several introduced areas, F. hepatica co-occurs with native or exotic populations of the congeneric F. gigantica, with thus far unknown implications. Over the fluke's extended range, in addition to domestic stock animals, wild native or naturalized mammals can also serve as final hosts. Indigenous and displaced populations of F. hepatica, however, have not yet been studied comparatively from an evolutionary perspective. A. crassus, from the Far East, has invaded three continents, without the previous naturalization of its natural host Anguilla japonica, by switching to the respective indigenous eel species. Local entomostrac crustaceans serve as susceptible intermediate hosts. The novel final hosts turned out to be naive in respect to the introduced nematode with far reaching consequences for the parasite's morphology (size), abundance and pathogenicity. Comparative infection experiments with Japanese and European eels yielded many differences in the hosts' immune defence, mirroring coevolution versus an abrupt host switch associated with the introduction of the helminth. In other associations of native hosts and invasive parasites, the elevated pathogenicity of the parasite seems to result from other deficiencies such as a lack of anti-parasitic behaviour of the naïve host compared to the donor host which displays distinct behavioural patterns, keeping the abundance of the parasite low. From the small amount of available literature, it can be concluded that the adaptation of certain populations of the novel host to the alien parasite takes several decades to a century or more. Summarizing all we know about hosts and parasites as aliens, tentative patterns and principles can be figured out, but individual case studies teach us that generalizations should be avoided.

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Checklist of Copepoda associated with fishes from Brazil

JOSÉ L. LUQUE, LUIZ TAVARES (2007)

One hundred and seventy-six determined species and 39 undetermined species of copepods associated with 179 marine and freshwater fish species from Brazil are listed, including information about the site of infection, host habitat, localities and references. Also, a host-parasite list is included herein.

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Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platyhelminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil

Rodney K. de Azevedo, Vanessa D. Abdallah, José L Luque (2010)

Using information from all published reports and data collected during several parasitological surveys between April 2003 and September 2009, a checklist of the parasites of fishes from Guandu River, southeastern of Brazil was generated. A total of 85 parasite species, 54 named species (1 Acanthocephala, 1 Cestoda, 2 Crustacea, 13 Digenea, 11 Nematoda, 23 Monogenea and 3 Myxozoa) and 31 undetermined species (3 Acanthocephala, 2 Cestoda, 1 Crustacea, 8 Digenea, 8 Nematoda, 4 Hirudinea, 3 Monogenea and 2 Myxozoa) in 21 fish host species from Guandu River, were listed in the current study, including 36 new locality records and 36 new host records. Also, a host-parasite list is included herein.

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Author and article information

Contributors

Rodney Kozlowiski de Azevedo: Role: ND

Vanessa Doro Abdallah: Role: ND

Reinaldo José da Silva: Role: ND

Tatiana M. Pegado de Azevedo: Role: ND

Maurício Laterça Martins: Role: ND

José Luis Luque: Role: ND

Journal

Journal ID (publisher): rbpv

Title: Revista Brasileira de Parasitologia Veterinária

Abbreviated Title: Rev. Bras. Parasitol. Vet.

Publisher: Colégio Brasileiro de Parasitologia Veterinária (Jaboticabal )

ISSN: 1984-2961

Publication date (Print): September 2012

Volume: 21

Issue: 3

Pages: 263-269

Affiliations

[1 ] Universidade Estadual Paulista Brazil

[2 ] Universidade Federal da Bahia Brazil

[3 ] Universidade Federal de Santa Catarina Brazil

[4 ] Universidade Federal Rural do Rio de Janeiro Brazil

Article

Publisher ID: S1984-29612012000300015

DOI: 10.1590/S1984-29612012000300015

SO-VID: cdde6558-3954-4555-84be-e177fbd35bee

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http://creativecommons.org/licenses/by/4.0/

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SciELO Brazil

Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1984-2961&lng=en

Expanded description of Lamproglena monodi (Copepoda: Lernaeidae), parasitizing native and introduced fishes in Brazil Translated title: Descrição expandida de Lamproglena monodi (Copepoda: Lernaeidae), parasita de peixes nativos e introduzidos no Brasil

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SciELO Brazil

Most cited references 13

Hosts and parasites as aliens.

Checklist of Copepoda associated with fishes from Brazil

Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platyhelminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil

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