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Amin OM, Rodríguez SM, Farrer S, Fierro P, Garcés C, Rivera F, D’Elía G. Review of the concept of Profilicollis Meyer, 1931 with a description of Profilicollis rancoensis n. sp. (Acanthocephala: Polymorphidae) from the freshwater crab, Aegla abtao Schmitt, 1942 (Decapoda: Anomura) in Chile, with a key to congeneric species. Parasite 2023; 30:42. [PMID: 37855712 PMCID: PMC10586241 DOI: 10.1051/parasite/2023042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 08/29/2023] [Indexed: 10/20/2023] Open
Abstract
Profilicollis rancoensis n. sp. is the tenth species of Profilicollis Meyer, 1931 which includes 9 other species mostly known from marine decapod crabs and shore birds. Cystacanths of P. rancoensis are described from the dominant freshwater crab Aegla abtao in Ranco Lake, Chile and are morphologically distinguished from cystacanths of the 9 other species based on a combination of 4 characters. These are body size, number of proboscis hook rows, number of hooks per row, and length of the largest anterior 2-4 hooks. Male and female cystacanths of P. rancoensis are 2.10-3.33 mm long having an ovoid proboscis with 14 rows of 6-7 hooks per row, with the largest anterior 2-4 hooks being 105-110 micrometers long; the anterior trunk has many small spines in 70-80 concentric rings, each with 50-60 spines around them; hook roots are simple, directed posteriorly, about as long as the blades anteriorly with unremarkable anterior manubria; the cephalic ganglion are in mid-receptacle just anterior to the level of the anterior trunk; the lemnisci are long and slender; the testes are in the anterior trunk, posterior trunk, or one in each; the primordia of 2 tubular cement glands are evident; strong bundles of fibers link the anterior and posterior trunk; and the posterior trunk has a corrugated surface cuticula. Molecular analysis (COI and 18S) sequences coincided with the morphology and support its taxonomy. The phylogenetic profile revealed that P. rancoensis n. sp. fell into the Profilicollis clade. Both sequences showed low genetic variation, and three different haplotypes were found. The new species was more closely related to P. botulus (Van Cleave, 1916) Witenberg, 1932 than to other Profilicollis species.
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Affiliation(s)
- Omar M. Amin
- Institute of Parasitic Diseases 11445 E. Via Linda 2-419 Scottsdale AZ 85259 USA
| | - Sara M. Rodríguez
- Departamento de Ecología, Facultad de Ciencias, Universidad Católica de la Santísima Concepción Alonso de Ribera 2850 Concepción CP 4030000 Chile
- Centro de Investigación en Recursos Naturales y Sustentabilidad (CIRENYS), Universidad Bernardo O’Higgins Avenida Viel 1497 Santiago de Chile CP 8370993 Chile
| | - Solinus Farrer
- Department of Biology, Brigham Young University 1114 MLBM Provo UT 84602 USA
| | - Pablo Fierro
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile Campus Isla Teja s/n Valdivia CP 509000 Chile
- Núcleo Milenio de Salmones Invasores (INVASAL), Barrio Universitario s/n Concepción CP 403000 Chile
| | - Cristóbal Garcés
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile Campus Isla Teja s/n Valdivia CP 509000 Chile
| | - Felipe Rivera
- Electron Microscopy Facility, Brigham Young University Provo UT 84602 USA
| | - Guillermo D’Elía
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile Campus Isla Teja s/n Valdivia CP 509000 Chile
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Amin OM, Rodríguez SM, Rubtsova N, Heckmann RA, Peña C, Castro T, Rivera F, D'Elía G. A comparative assessment of the morphology of Profilicollis altmani (Acanthocephala, Polymorphidae) from crustaceans and shore birds in Peru, with special notes on hook elemental analysis (EDXA), SEM imaging, histopathology, and molecular profile. Parasite 2022; 29:9. [PMID: 35191831 PMCID: PMC8862641 DOI: 10.1051/parasite/2022005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 01/17/2022] [Indexed: 11/14/2022] Open
Abstract
The morphology of cystacanths and adults of Profilicollis altmani (Perry, 1942) Van Cleave, 1947 (Polymorphidae) were studied from the Pacific mole crab Emerita analoga (Stimpson) (Crustacea, Hippidae) and Belcher's gull Larus belcheri (Vigors) (Aves, Laridae), respectively, in Peru. Comparative morphometrics with accounts of other populations of P. altmani from elsewhere off the Pacific and Atlantic coasts of North and South America revealed marked intraspecific population variations. We report scanning electron micrographs (SEM) of new features, not before noted or captured in line drawings by earlier observers. We further present microscope images that reveal internal details not previously reported or possible to see with SEM. Energy dispersive X-ray analysis (EDXA) revealed unusual patterns in the chemistry of proboscis hooks especially the high sulfur and diminished phosphorous and calcium in hook tips and low sulfur and high levels of phosphorous and calcium at mid hooks. The size and shape of all hooks of the cystacanths are reported for the first time. Histopathological studies in L. belcheri from Peru are also included. Cystacanths of P. altmani from California were also analyzed for molecular patterns and compared with other sequences reported from other locations. The molecular data and the analysis of our new sequences of cytochrome oxidase I (COI) showed that haplotypes of P. altmani had low genetic variation; the species is not geographically structured, and within its clade no monophyletic group is formed.
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Affiliation(s)
- Omar M Amin
- Institute of Parasitic Diseases, 11445 E. Via Linda 2-419, Scottsdale, AZ 85259, USA
| | - Sara M Rodríguez
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Isla Teja s/n, Valdivia 509000, Chile
| | - Nataliya Rubtsova
- Institute of Parasitic Diseases, 11445 E. Via Linda 2-419, Scottsdale, AZ 85259, USA
| | | | - César Peña
- Departamento de Acuicultura, Facultad de Oceanografía y Pesquería, Universidad Nacional Federico Villarreal, Francia 726, Miraflores, Lima 15007, Perú
| | - Teresa Castro
- Laboratorio de Patobiología Acuática, Dirección General de Investigaciones en Acuicultura, Instituto del Mar del Perú (IMARPE), Esquina Gamarra y General Valle s/n. Casilla Postal 22, Callao, Perú
| | - Felipe Rivera
- Electron Microscopy Facility, Brigham Young University, Provo, UT 84602, USA
| | - Guillermo D'Elía
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Isla Teja s/n, Valdivia 509000, Chile
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Butler RA, Trout Fryxell RT, Houston AE, Bowers EK, Paulsen D, Coons LB, Kennedy ML. Small-mammal characteristics affect tick communities in southwestern Tennessee (USA). INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2020; 12:150-154. [PMID: 32547921 PMCID: PMC7284121 DOI: 10.1016/j.ijppaw.2020.05.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 11/25/2022]
Abstract
Life histories can influence the degree of parasite infestations on a host. Pressures exerted on hosts based on age and sex convey varying degrees of parasite prevalence due to differences in host lifestyles, but it is not known how interactions between different host traits affect tick numbers. The objective of this study was to determine if host characteristics (e.g., age, sex, weight, and their interactions) affect the mean number of ticks found on small mammals regardless of host species or habitat. Sherman live traps were placed in forest and grass/forb habitats representative of the southeastern United States. After capture, host characteristics were recorded, and hosts were then searched for ticks. A total of 281 small mammals (148 Peromyscus leucopus, 34 P. maniculatus, 76 Sigmodon hispidus, 16 Microtus pinetorum, and 7 Ochrotomys nuttalli) and 610 ticks (488 Dermacentor variabilis, 114 Ixodes scapularis, 1 Amblyomma americanum, and 7 A. maculatum) were collected in this study. Host's age, sex, and weight affected the number of ticks collected from small mammals and significant interaction effects between host traits occurred (weight by sex, weight by age, and sex by age). For instance, female subadult rodents had significantly more ticks compared to female adults, male subadults had significantly fewer ticks compared to male adults, and the number of ticks on a host increased as host body mass increased. These results support the hypothesis that the number of ticks vary on rodent hosts based on life histories and trait interactions. Therefore, understanding the behavioral mechanisms of a host can aid in the management of parasites in the environment. Host life histories predict the number of ticks present on a rodent. Male and subadult rodents are infested with an overall greater number of ticks than females and adults. Rodents have more ticks as their weight increases. Interactions between sex and age predict the number of ticks present on a rodent.
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Affiliation(s)
- R A Butler
- Department of Biological Sciences, The University of Memphis, Memphis, TN, USA.,Department of Entomology and Plant Pathology, The University of Tennessee, Knoxville, TN, USA
| | - R T Trout Fryxell
- Department of Entomology and Plant Pathology, The University of Tennessee, Knoxville, TN, USA
| | - A E Houston
- Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN, USA
| | - E K Bowers
- Department of Biological Sciences, The University of Memphis, Memphis, TN, USA
| | - D Paulsen
- Department of Entomology and Plant Pathology, The University of Tennessee, Knoxville, TN, USA
| | - L B Coons
- Department of Biological Sciences, The University of Memphis, Memphis, TN, USA
| | - M L Kennedy
- Department of Biological Sciences, The University of Memphis, Memphis, TN, USA
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Distribution ofPomphorhynchus laevis s.l.(Acanthocephala) among fish species at a local scale: importance of fish biomass density. J Helminthol 2019; 94:e99. [DOI: 10.1017/s0022149x1900097x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractParasite distribution among hosts is a fundamental aspect of host–parasite interactions. Aggregated parasite distributions within and across host species are commonly reported and potentially influenced by many factors, whether host or parasite specific, or related to host–parasite encounter and compatibility. Yet, the respective role of each in observed parasite distributions are often unclear. Here, we documented the distribution of the acanthocephalan parasitePomphorhynchus laevis sensu lato(s.l.) in two replicate fish host populations. Aggregated distributions were observed in both populations, within and across fish host species. We found a positive abundance–prevalence relationship across fish species, suggesting that resource availability (fish host biomass density) was the main driver ofP. laevis s.l.distribution. This was supported by further positive associations between mean parasite load and fish biomass density. We found little evidence for intensity-dependent regulation within host (i.e. intra-host competition among co-infecting parasites). Furthermore,P. laevis s.l.infection had no detectable effect on fish condition indices, except on the body condition of female barbel (Barbus barbus). Therefore,P. laevis s.l.tended to accumulate with size/age within fish species, and with fish biomass density among fish species, with apparently negligible limitations due to intra-host intensity-dependent regulation of parasite, or to parasite-induced morbidity in fish. The relative availability of final hosts for trophic transmission thus appears to be the main driver ofP. laevis s.l.distribution among fish.
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Rodríguez SM, Uribe JC, Estay SA, Palacios M, Pinochet R, Oyarzún S, Valdivia N. Widespread infection of Areospora rohanae in southern king crab ( Lithodes santolla) populations across south Chilean Patagonia. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190682. [PMID: 31824696 PMCID: PMC6837190 DOI: 10.1098/rsos.190682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 09/08/2019] [Indexed: 06/10/2023]
Abstract
Cottage cheese disease is caused by microsporidian parasites that infect a wide range of animal populations. Despite its potential to affect economically important activities, the spatial patterns of prevalence of this disease are still not well understood. Here, we analyse the occurrence of the microsporidian Areospora rohanae in populations of the king crab Lithodes santolla over ca 800 km of the southeastern Pacific shore. In winter 2011, conical pots were deployed between 50 and 200 m depth to capture crabs of a wide range of sizes. The infection was widely distributed along the region, with a mean prevalence of 16%, and no significant association between prevalence and geographical location was detected. Males, females and ovigerous females showed similar prevalence values of 16.5 (13-18.9), 15 (9.2-15) and 16.7% (10-19%), respectively. These patterns of prevalence were consistent across crab body sizes, despite the ontogenetic and sex-dependent variations in feeding behaviour and bathymetric migrations previously reported for king crabs. This study provided the first report of the geographical distribution of A. rohanae infecting southern king crabs.
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Affiliation(s)
- S M Rodríguez
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - J C Uribe
- Instituto de la Patagonia, Universidad de Magallanes, Punta Arenas, Chile
| | - S A Estay
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
- Center of Applied Ecology and Sustainability (CAPES), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - M Palacios
- Programa de Doctorado en Biología Marina, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
- Facultad de Ciencias, Universidad de Magallanes, Punta Arenas, Chile
- Centro de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia-Punta Arenas, Chile
| | - R Pinochet
- Programa de Doctorado en Biología Marina, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
- Centro de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia-Punta Arenas, Chile
| | - S Oyarzún
- Facultad de Ciencias, Universidad de Magallanes, Punta Arenas, Chile
| | - N Valdivia
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
- Centro de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia-Punta Arenas, Chile
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Figueroa LB, Urbina MA, Riedemann A, Rodriguez SM, Paschke K. Decreased Metabolic Rate in the Mole Crabs, Emerita analoga, Infected with the Acanthocephalan Profilicollis altmani. J Parasitol 2019. [DOI: 10.1645/18-29] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Luis Balboa Figueroa
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomás, Buena Vecindad #91,
| | - Mauricio A. Urbina
- Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
| | - Alejandro Riedemann
- Instituto de Acuicultura, Universidad Austral de Chile, P.O. Box 1327, Puerto Montt, Chile
| | - Sara M. Rodriguez
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Va
| | - Kurt Paschke
- Instituto de Acuicultura, Universidad Austral de Chile, P.O. Box 1327, Puerto Montt, Chile
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