Molecular characterization of haemococcidia genus <i><scp>S</scp>chellackia</i> (Apicomplexa) reveals the polyphyletic origin of the family Lankesterellidae

Megía‐Palma, Rodrigo; Martı́nez, Javier; Merino, Santiago

doi:10.1111/zsc.12050

Cited by 26 publications

(41 citation statements)

References 29 publications

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“…However, it is necessary to resample data from these parasites to discard a hypothetical misidentification (Megía‐Palma et al . ). Later on, evolutionary radiation of the family Eimeriidae could occur due to the emergence of the Stieda body.…”

Section: Discussionmentioning

confidence: 97%

“…; Megía‐Palma et al . , ). This method is particularly useful to avoid killing the reptile hosts, because it would concern conservation and ethical issues.…”

Section: Discussionmentioning

confidence: 99%

“…These primers were previously used to amplify other coccidian species (Megía‐Palma et al . ). Due to the insectivorous diet of some reptilian species, we amplified haemogregarines together with Eimeria in some faecal samples.…”

Section: Methodsmentioning

confidence: 97%

“…The eight DNA sequences ( 18 S rRNA) obtained in this study were aligned together with 79 other sequences included in a previous study (Megía‐Palma et al . ). The alignment was performed using PROBCONS (http://toolkit.tuebingen.mpg.de/probcons).…”

Section: Methodsmentioning

confidence: 97%

“…In fact, genera such as Cyclospora Schneider , Caryospora Léger , Isospora Schneider , Lankesterella Labbé and Schellackia Reichenow 1919 shared ancestor with Eimeria (see Megía‐Palma et al . ). Based on previous molecular results (Jirků et al .…”

Section: Introductionmentioning

confidence: 97%

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Phylogeny of the reptilian Eimeria: are Choleoeimeria and Acroeimeria valid generic names?

et al. 2015

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2015). Phylogeny of the reptilian Eimeria: are Choleoeimeria and Acroeimeria valid generic names?. -Zoologica Scripta, 44, 684-692.Reptiles are the animals with the most described coccidian species among all vertebrates. However, the co-evolutionary relationships in this host-parasite system have been scarcely studied. Paperna & Landsberg (South African Journal of Zoology, 24, 1989, 345) proposed the independent evolutionary origin of the Eimeria-like species isolated from reptiles based on morphological and developmental characteristics of their oocysts. Accordingly, they suggested the reclassification of these parasites in two new genera, Choleoeimeria and Acroeimeria. The validity of the genera proposed to classify reptilian Eimeria species remained unresolved due to the lack of species genetically characterized. In this study, we included 18S rRNA gene sequences from seven Eimeria-like species isolated from five different lizard host families. The phylogenetic analyses confirmed the independent evolutionary origin of the Eimeria-like species infecting lizards. Within this group, most species were placed into two monophyletic clades. One of them included the species with ellipsoidal oocysts (i.e. Choleoeimeria-like oocysts), whereas the species with more spheroidal oocysts (i.e. Acroeimeria-like oocysts) were included in the second one. This result supports the taxonomic validity of the genera Acroeimeria and Choleoeimeria.

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Section: Discussionmentioning

confidence: 97%

“…; Megía‐Palma et al . , ). This method is particularly useful to avoid killing the reptile hosts, because it would concern conservation and ethical issues.…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

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Phylogeny of the reptilian Eimeria: are Choleoeimeria and Acroeimeria valid generic names?

et al. 2015

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Differential recovery ability from infections by two blood parasite genera in males of a Mediterranean lacertid lizard after an experimental translocation

Megía‐Palma,

Redondo,

Blázquez‐Castro

et al. 2023

J Exp Zool Pt A

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Different blood parasites can co‐infect natural populations of lizards. However, our knowledge of the host's ability to recover from them (i.e., significantly reduce parasitemia levels) is scarce. This has interest from an ecological immunology perspective. Herein, we investigate the host recovery ability in males of the lizard Psammodromus algirus infected by parasite genera Schellackia and Karyolysus. The role of lizard hosts is dissimilar in the life cycle of these two parasites, and thus different immune control of the infections is expected by the vertebrate host. As Schellackia performs both sexual and asexual reproduction cycles in lizards, we expect a better immune control by its vertebrate hosts. On the contrary, Karyolysus performs sexual reproductive cycles in vectors, hence we expect lower immune control by the lizards. We carried out a reciprocal translocation experiment during the lizards’ mating season to evaluate both parasitemia and leukocyte profiles in male lizards, being one of the sampling plots close to a road with moderate traffic. These circumstances provide a combination of extrinsic (environmental stress) and intrinsic factors (reproductive vs. immune trade‐offs) that may influence host's recovery ability. We recaptured 33% of the lizards, with a similar proportion in control and translocated groups. Karyolysus infected 92.3% and Schellackia 38.5% of these lizards. Hosts demonstrated ability to significantly reduce parasitemia of Schellackia but not of Karyolysus. This suggests, in line with our predictions, a differential immune relationship of lizards with these parasites, at time that supports that parasites with different phylogenetic origins should be analyzed separately in investigations of their effects on hosts. Furthermore, lizards close to the road underwent a stronger upregulation of lymphocytes and monocytes when translocated far from the road, suggesting a putative greater exposure to pathogens in the latter area.

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A structural colour ornament correlates positively with parasite load and body condition in an insular lizard species

Megía‐Palma

Martı́nez

Merino

2016

Sci Nat

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Pigment-based ornaments in vertebrates may reflect the body condition or health status of the individual in correlation with environmental stress and hormonal balance. Among the environmental factors shaping sexual colouration, parasitic infections have been stressed as an important evolutionary pressure constraining the maintenance of pigment-based ornaments. However, the honesty of structure-based ornaments in vertebrates is still under debate. Structural UV-biased ornaments in Gallotia lizards were described as a trait used by conspecifics during mate and rival assessment suggesting the reliability of these signals. We investigated the relationship between parasitaemia, body condition and a structural-based ornament present in the cheek of the sexually dichromatic Canarian lacertid Gallotia galloti in a population with an almost 100 % prevalence of haemoparasites. Using spectrophotometric techniques, we found that males with higher values of cheek UV chroma were infected with more haemoparasites. No significant relationship was found between haemoparasite load and body condition. However, males with higher cheek UV chroma showed significantly better body condition. In addition, we found that cheek hue was significantly related to body condition of individuals in both sexes. In males, cheek reflectivity biased towards the UV range was significantly related to better body condition. In females, those individuals with better body condition showed more whitish cheeks with less UV suggesting that cheek hue serves as an intersexual signal for sex recognition. We conclude that the positive relationship between cheek chroma and parasite load in male lizards is compatible with both differential density of melanin and iridophore arrangement in the dermis conveying an individual's ability to cope with environmental stress.

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Molecular characterization of haemococcidia genus Schellackia (Apicomplexa) reveals the polyphyletic origin of the family Lankesterellidae

Cited by 26 publications

References 29 publications

Phylogeny of the reptilian Eimeria: are Choleoeimeria and Acroeimeria valid generic names?

Phylogeny of the reptilian Eimeria: are Choleoeimeria and Acroeimeria valid generic names?

Differential recovery ability from infections by two blood parasite genera in males of a Mediterranean lacertid lizard after an experimental translocation

A structural colour ornament correlates positively with parasite load and body condition in an insular lizard species

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