Sôbre uma nova espécie do gênero Lecithochirium Luehe, 1901: (Trematoda, Hemiuroidea)

Freitas, J. F. Teixeira de; Gomes, Delir Corrêa

doi:10.1590/s0074-02761971000100008

Mem. Inst. Oswaldo Cruz

1971

DOI: 10.1590/s0074-02761971000100008

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Sôbre uma nova espécie do gênero Lecithochirium Luehe, 1901: (Trematoda, Hemiuroidea)

J. F. Teixeira de Freitas¹,

Delir Corrêa Gomes²

Abstract: In this paper a new species of the genus Lecithochirium Luehe, 1901, is described. To simplify the study of this genus, we divided it in 3 groups according principally to the relation among the suckers. L. manteri sp. n., comes nearest to L. texanum, L. priacanthi, and L. microstomum, but differes mainly from them by the great size of the suckers, pharynx and eggs

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Hemiurid Trematodes (Digenea: Hemiuridae) from Marine Fishes off the Coast of Rio de Janeiro, Brazil, with Novel Molecular Data

Pantoja

Kudlai

2022

Animals

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Brazil is a tropical country with remarkably diverse marine habitats that harbour a rich diversity of fish. Only a small portion of this fish diversity has been investigated for parasites, and thus the diversity of their trematode parasites remains unexplored. Moreover, only 5 out of 184 known digenean trematode species of marine fish in Brazil have been genetically characterised. The Hemiuridae Looss, 1899 is the second most speciose trematode family in marine fishes from Brazil but, in many ways, it remains a neglected group. Forty-three trematode specimens from nine fish species were collected from the coastal zone off Rio de Janeiro, Brazil. Trematodes were found in the stomach of 14 specimens of 9 fish species belonging to 8 families (Carangidae, Clupeidae, Haemulidae, Muraenidae, Percophidae, Pinguipedidae, Trichiuridae, and Triglidae). Trematode specimens were studied using morphological and molecular genetic analyses. A total of eight hemiurid species from four genera, Ectenurus, Lecithochirium, Myosaccium, and Parahemiurus were identified. This paper reports on new host records for four species of hemiurids, adds a new record on the geographical distribution for one species, and provides the first DNA sequence data supplemented with the detailed description of morphology for five species. Phylogenetic analyses supported that the subfamily classifications of the Hemiuridae—based entirely on morphological characters—needs to be reconsidered, taking into account a wider range of information sources.

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Hemiurid Trematodes (Digenea: Hemiuridae) from Marine Fishes off the Coast of Rio de Janeiro, Brazil, with Novel Molecular Data

Pantoja

Kudlai

2022

Animals

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<b>Community structure of metazoan parasites of <i>Trichiurus lepturus</i> (Perciformes, Trichiuridae) from Ubatuba, Southwestern Atlantic Ocean,Brazil

Bueno

Aguiar

Santos

2014

Acta Sci. Biol. Sci.

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This study aimed to evaluate the community structure of metazoan parasites of Trichiurus lepturus from Ubatuba, Brazil. Fifty fish were collected in February 2008. Our statistical approach consisted in evidencing the most interesting infrapopulations, in order to try to understand the relationship between the variables regulating them. This analysis was based on a Poisson generalized linear model (GLM) developed with selection of variables using the corrected Akaike Information Criterion (AICc) and AIC weight. Larvae of Anisakidae and Lecithochirium microstomum seems to play an important role on this hostparasite system and their abundances were influenced by the ontogenetic shift in feeding of the hosts. Changes in characteristics of hosts included a negative relationship between increased abundance of anisakids' larvae and reduction in host weight. Gender biases were statistically consistent, but further long-term research is required to confirm them. Finally, we show the challenges that may be addressed in future research.

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Sôbre uma nova espécie do gênero Lecithochirium Luehe, 1901: (Trematoda, Hemiuroidea)

Cited by 2 publications

References 0 publications

Hemiurid Trematodes (Digenea: Hemiuridae) from Marine Fishes off the Coast of Rio de Janeiro, Brazil, with Novel Molecular Data

Hemiurid Trematodes (Digenea: Hemiuridae) from Marine Fishes off the Coast of Rio de Janeiro, Brazil, with Novel Molecular Data

<b>Community structure of metazoan parasites of <i>Trichiurus lepturus</i> (Perciformes, Trichiuridae) from Ubatuba, Southwestern Atlantic Ocean,Brazil

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