Renicola williamsi n. sp. (Trematoda: Digenea: Renicolidae) from the South Polar Skua, Catharacta maccormiki

Munyer, Paul D.; Holloway, Harry L.

doi:10.2307/3226600

Cited by 9 publications

(6 citation statements)

References 9 publications

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“…In addition to the species involved in our analysis, testes contiguous near the ventral sucker have been noted in some other renicolids, e.g. Renicola wright Odening, 1962 , Renicola pelecani Wright, 1954 , Renicola fischeri Odening, 1962 , Renicola pseudosloanei Odening, 1962 , Renicola hayesannieae Byrd and Kellogg, 1972 , Renicola pollaris Kontrimavitschus and Bachmet'eva, 1960 , Renicola glacialis Riley and Owen, 1972 and Renicola williamsi Munyer and Holloway, 1990 (Wright, 1954 , 1956 ; Kontrimavitschus and Bachmet'eva, 1960 ; Odening, 1962 ; Byrd and Kellogg, 1972 ; Riley and Owen, 1972 ; Munyer and Holloway, 1990 ). The emergence of this character in the course of morphological evolution of adult renicolids could be determined by the pressure on the testes from the eggs in the uterus loops expanding in posterior–lateral direction and could occur independently in different phylogenetic lineages of this taxon.…”

Section: Discussionmentioning

confidence: 92%

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Overview of renicolid digeneans (Digenea, Renicolidae) from marine gulls of northern Holarctic with remarks on their species statuses, phylogeny and phylogeography

Галактионов

Solovyeva²,

Blakeslee³

et al. 2022

Parasitology

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Renicolid digeneans parasitize aquatic birds. Their intramolluscan stages develop in marine and brackish-water gastropods, while metacercariae develop in molluscs and fishes. The systematics of renicolids is poorly developed, their life cycles are mostly unknown, and the statuses of many species require revision. Here, we establish based on integrated morphological and molecular data that adult renicolids from gulls Larus argentatus and Larus schistisagus and sporocysts and cercariae of Cercaria parvicaudata from marine snails Littorina spp. are life-cycle stages of the same species. We name it Renicola parvicaudatus and synonymized with it Renicola roscovitus. An analysis of the cox1 gene of R. parvicaudatus from Europe, North America and North Asia demonstrates a low genetic divergence, suggesting that this species has formed quite recently (perhaps during last glacial maximum) and that interregional gene flow is high. In Littorina saxatilis and L. obtusata from the Barents Sea, molecular analysis has revealed intramolluscan stages of Cercaria littorinae saxatilis VIII, a cryptic species relative to R. parvicaudatus. In the molecular trees, Renicola keimahuri from L. schistisagus belongs to another clade than R. parvicaudatus. We show that the species of this clade have cercariae of Rhodometopa group and outline morphological and behavioural transformations leading from xiphidiocercariae to these larvae. Molecular analysis has revealed 3 main phylogenetic branches of renicolids, differing in structure of adults, type of cercariae and host range. Our results elucidate the patterns of host colonization and geographical expansion of renicolids and pave the way to the solution of some long-standing problems of their classification.

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Section: Discussionmentioning

confidence: 92%

“…Renicolidae is a small family of digeneans (Trematoda, Digenea), currently comprising fewer than a hundred species, taking into account the descriptions of the larvae (Sudarikov and Stenko, 1984 ; Munyer and Holloway, 1990 ; Kharoo, 2013 ). Their transmission is implemented in marine and estuarine ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Overview of renicolid digeneans (Digenea, Renicolidae) from marine gulls of northern Holarctic with remarks on their species statuses, phylogeny and phylogeography

Галактионов

Solovyeva²,

Blakeslee³

et al. 2022

Parasitology

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“…Unfortunately, digenean specimens (P = 1.6%; MI = 2) were in a very advanced state of decomposition, which did not allow us to identify them accurately. However, the general shape of the body, the extension of uterus, the morphology of the eggs, and their location within the host (kidney) allowed us to place them into the family Renicolidae (possibly Renicala williamsi Munyer and Holloway 1990) (Munyer and Holloway 1990).…”

Section: Endoparasites In Eviscerated Hostsmentioning

confidence: 99%

Assessing helminth infection in some reproductive colonies of Southern Giant Petrel (Macronectes giganteus) from Antarctica

Fusaro,

Capasso,

Lorenti

et al. 2024

Preprint

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The host/parasite relationship is a key tool for understanding the role of parasitism in the feeding ecology of Antarctic seabirds. Especially, birds with extensive migratory routes through isolated regions are particularly sensitive to new infections. Although research on parasitic diseases in Antarctic birds is sparse and information is fragmentary, an increasing number of studies are currently underway in this area. The present study aims to provide new information on parasitic helminths in the Southern Giant Petrel Macronectes giganteus in some nesting areas, integrating different parasitological techniques. A total of 126 faecal samples, 16 regurgitates and six dead individuals (five adults and one chick) were analysed for helminth parasites. Members of four helminth groups (Cestoda, Digenea, Nematoda, Acantocephala) represented the parasitic diversity of the Southern Giant Petrel in the studied localities. All dead birds analysed (P = 100%) harboured helminth parasites, additionally P = 49.2% of the fecal samples and P = 0.06% of the regurgitated individuals presented at least one of the different helminth groups found in the viscera. The combination of three diagnostic techniques allowed us to determine the presence of nine adult helminth species (Cosmocephalus obvelatus, Stegophorus macronectes, Stegophorus diomedeae, Contracaecum sp., Parorchites zederi, Tetrabothrius heteroclitus, Diphylobotrium sp., Corynosoma shackletoni, and Renicolidae). In addition, juvenile specimens of Tetrameres sp. and Anisakis sp. were found in the eviscerated host. We discuss the trophic relationships of the hosts and their influence in the helminth infestations. This study provides new knowledge about the parasitic diversity of the Southern Giant Petrel in its nestling areas with new records of helminth species in Antarctica.

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“…(Freitas, 1955;Thatcher, 1993), Magellanic penguins (S. magellanicus) (Jerdy et al, 2016), and Manx shearwater (P. puffinus) (Mariani, 2016;Matos et al, 2019). In some species, the parasitic disease by renicolids may obstruct the tubular lumen or lead to more severe lesions such as nephritis, tubular hyperplasia, and fibrosis (Wright, 1954a;Munyer & Holloway, 1990;Jerdy et al, 2016). disease by renicolids may obstruct the tubular lumen or lead to more severe lesions such as nephritis, tubular hyperplasia, and fibrosis (Wright, 1954a;Munyer & Holloway, 1990;Jerdy et al, 2016).…”

Section: Parasitic Diseasesmentioning

confidence: 99%

“…In some species, the parasitic disease by renicolids may obstruct the tubular lumen or lead to more severe lesions such as nephritis, tubular hyperplasia, and fibrosis (Wright, 1954a;Munyer & Holloway, 1990;Jerdy et al, 2016). disease by renicolids may obstruct the tubular lumen or lead to more severe lesions such as nephritis, tubular hyperplasia, and fibrosis (Wright, 1954a;Munyer & Holloway, 1990;Jerdy et al, 2016). S1 shows some studies on parasitic species found in Brazilian seabirds and from other localities published from 2000.…”

Section: Parasitic Diseasesmentioning

confidence: 99%

Seabirds: studies with parasitofauna and potential indicator for environmental anthropogenic impacts

Matos

Domit

Bracarense

2020

SCA

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The aim of this review was to present the main anthropogenic threats to seabirds, a taxonomic group described as environmental sentinels, and the dynamics between parasites and hosts and their relationship with the health of the marine ecosystem. Coastal marine environments support various anthropogenic activities, exposing seabirds to multiple and synergistic environmental changes. These activities are considered negative to the maintenance of several seabird species, such as exposure to constant aquatic contaminants and fishing. In addition, parasitic and infectious diseases (viral, bacterial, and fungal) may also play an important role in maintaining some seabird populations. Some pathogenic organisms have public health importance and/or may indicate environmental quality. Host-parasite interaction may be positive, negative, or absent depending on some environmental factors potentially associated with degradation, as well as intrinsic factors of host or parasite. In addition, investigating aspects of seabird mortality also contributes to the constant population monitoring and understanding of the interaction between animals, humans, and the environment. Thus, seabirds and their parasitofauna can provide important ecological and health information, including those related to environmental health, supporting strategies for reducing degradation and maintaining marine ecosystems.

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Renicola williamsi n. sp. (Trematoda: Digenea: Renicolidae) from the South Polar Skua, Catharacta maccormiki

Cited by 9 publications

References 9 publications

Overview of renicolid digeneans (Digenea, Renicolidae) from marine gulls of northern Holarctic with remarks on their species statuses, phylogeny and phylogeography

Overview of renicolid digeneans (Digenea, Renicolidae) from marine gulls of northern Holarctic with remarks on their species statuses, phylogeny and phylogeography

Assessing helminth infection in some reproductive colonies of Southern Giant Petrel (Macronectes giganteus) from Antarctica

Seabirds: studies with parasitofauna and potential indicator for environmental anthropogenic impacts

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