Carios Capensis (Acari: Argasidae) in the Nests of the Yellow-Legged Gull (Larus Michahellis) in the Aguéli Island of Réghaia, Algeria

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Carios Capensis (Acari: Argasidae) in the Nests of the Yellow-Legged Gull (Larus Michahellis) in the Aguéli Island of Réghaia, Algeria International Journal of Botany and Research (IJBR) ISSN(P): 2277-4815; ISSN(E): 2319-4456 Vol. 4, Issue 3, Jun 2014, 23-30 © TJPRC Pvt. Ltd. CARIOS CAPENSIS (ACARI: ARGASIDAE) IN THE NESTS OF THE YELLOW-LEGGED GULL (LARUS MICHAHELLIS) IN THE AGUÉLI ISLAND OF RÉGHAIA, ALGERIA FADHILA BAZIZ–NEFFAH 1,6, TAHAR KERNIF 1,2,3,6, ASSIA BENELJOUZI 2, AMINA BOUTELLIS 3,4,6, AMIROUCHE MORSLI 5, ZOUBIR HARRAT 2, SALAHEDDINE DOUMANDJI 1 & IDIR BITAM 3,4,6 1Department of Zoology, Agronomic graduate school, El Harrach, Algiers, Algeria 2Parasite Ecology and Population Genetics, Pasteur Institute of Algiers, Algeria 3Aix Marseille University, URMITE, UM63, CNRS 7278, IRD 198, Inserm 1095, Marseille, France 4Faculty of Biological Sciences, University of Science and Technology Houari Boumediene, Algiers, Algeria 5Réghaïa Cynegetic centers, Algiers, Algeria 6VALCORE laboratory. University M'hamed Bougara, Boumerdes, Algeria ABSTRACT During the two last years 2012 and 2013, we conducted a surveillance to identify the soft ticks species (Acari: Argasidae) found in nests of Yellow-legged Gull (Larus michahellis ), in Wetland from Réghaïa (Algeria) more specifically on the island Agueli, 1 km of the beach Réghaïa. We collected 227 ticks on 31 nests. Carios capensis , soft tick species, was identified by morphological and molecular methods using the polymerase chain reaction (PCR) targeting the mitochondrial 16S rRNA gene. Prevalence, intensity and abundance of this ectoparasite species as well as its potential vector role are discussed to survey the risk factors for human populations. KEYWORDS: Carios capensis , Larus michahellis , Nests, Reghaïa, Algeria INTRODUCTION In the Mediterranean basin, the Laridae species are numerically abundant, the Yellow-legged Gull (Larus michahellis ) experiencing strong population growth over the past forty years as well as these nests along the coasts, particularly in the northwestern Mediterranean (Thibault et al ., 1996; Oro and Martinez-Abrain, 2007). Indeed, although non-breeding birds may travel long distances, breeding adults show more restricted movements and high breeding site fidelity Baaloudj et al. (2012). Yellow-legged Gulls form dense colonies and reuse breeding sites year after year; they may be exposed to a number of pathogens and arthropod vectors, such as ticks (Bosch and Figuerola, 1999; Dietrich et al. 2011). Argasid ticks are vectors of viral and bacterial agents of humans and animals. Carios capensis , a soft tick of seabirds are known as reservoirs of pathogenic bacteria of medical importance that are found around the world Wilkinson et al. (2014). The study by Arnal et al (2014) shows that legged Gulls in the Mediterranean basin are exposed to MEABAN virus transmitted by soft ticks and mosquitoes, which emphasizes the need to study the spatial and temporal distribution of the flavivirus and its potential pathogenicity for animals and humans. The objective of this study was to show the presence of soft ticks Carios capensis in the nests of Larus michahellis in the island Aguéli and evaluate the potential risk of pathogen transmission from birds to humans. www.tjprc.org [email protected] 24 Fadhila Baziz–Neffah, Tahar Kernif, Assia Beneljouzi, Amina Boutellis, Amirouche Morsli, Zoubir Harrat, Salaheddine Doumandji & Idir Bitam METHODS Sites study The Yellow-legged Gull frequents the swamps of Lake and Aguéli Island from Réghaïa. The wet zone of Réghaïa (36° 47' N, 3° 20' E) is a complex specific ecosystem. It is limited to the North by the Mediterranean Sea and by the oriental part of Mitidja in the South which the first hills announced of Kabyle massive Mutin (1977). Its climate is sub-humid to winter warm and precipitation fluctuates from year to year between 200 and 800 mm. This study was conducted on the Aguéli Island, which has an area of 29, 705 m² with rare herbaceous plants growing between boulders Ouarab et al. (2014). It is located at 1 km off Réghaïa beach (Figure. 1). Figure 1: Presentation of the Aguéli Island from Réghaia Region (Algiers) Nests Collection This work was carried out after the bird nesting period of 2012 and 2013. The nests are recovered when the chicks leave their nests. The Yellow-legged Gull nests are collected between the ratchets in the Aguéli Island. Subsequently, the nests are placed in individual bags to avoid loss of parasites; these bags are identified by bird species. Conservation of Ectoparasites The ticks were kept in 70% ethanol and sent to the WHO Collaborative Centre for Rickettsial Diseases and Other Arthropod-borne Bacterial Diseases (Marseille, France) Morphological Identification of Ticks Ectoparasites were identified by their morphological characteristics using a stereomicroscope SFC-11 (MOTIC ®) and an optical microscope (OPTECH ®). For ticks, we used the key (Hoogstraal H (1952); Hoogstraal H et (1956)). Pictures were made with a binocular microscope ZEISS AXIO ZOOM. V16 (URMITE, France). Finally, the identification was confirmed by molecular biology (see next section). Impact Factor (JCC): 1.6913 Index Copernicus Value (ICV): 3.0 Carios capensis (Acari: Argasidae) in the Nests of the Yellow-legged Gull ( Larus michahellis ) in the Aguéli Island of Réghaia, Algeria 25 Molecular Identification of Ticks DNA Extraction Ticks are rinsed with distilled water, dried on sterile filter paper, and then crushed individually in sterile Eppendorf tubes. Thereafter, each tick was incised using a scalpel and then incubated overnight at 56°C in 180 µL of Buffer G2 (30 mM Tris·Cl; 30 mM EDTA; 5% Tween 20; 0.5% Triton X-100; 800 mM GuHCl) containing 20 µL of proteinase K (activity = 600 mAU/mL solution or 40 mAU/mg of protein) until lysis and then homogenized Kernif et al., (2012). After the pre-lysing steps, DNA extraction for 200 µL of homogenization was performed using an automatic EZ1 kit (QIAGEN-BioRobot ® EZ1, Tokyo, Japan), according to the manufacturer’s instructions (EZ1 DNA Tissue Kit, QIAGEN ®, Hilden, Germany). Amplification by Standard Polymerase Chain Reaction (PCR) and Sequencing DNAs were subjected to PCR by thermocycler PTC-200 Peltier model (MJ Research Inc., Watertown, Mass.) with amplification of mitochondrial 16S rRNA gene according to Mangold et al. (1998). The PCR product was subsequently verified by the migration of the amplicons on agarose gel 1%. The DNA sequencing reactions were performed for all samples amplified by PCR, as described previously (Kernif et al., 2012). The Data were collected using a capillary sequencer genetic analysis ABI Prism 3130xl (ABI PRISM, PE Applied Biosystems, USA). The sequences were edited and assembled using Chromas Pro 1.34 (Technelysium Pty Ltd, Tewantin, Australia) software. The sequences obtained were compared to existing sequences in the database NCBI-BLAST (basic local tool alignment mark) obtained from the internet server (http://blast.ncbi.nlm.nih.gov/Blast.cgi ). Quantitative Real Time PCR Assay All samples were screened by using a quantitative real-time PCR (qPCR) performed on the CFX (Applied biosystem) incorporated primers and probes targeting a portion of the Bartonella 16S–23S intergenic spacer region (ITS), to detect DNA of Borrelia species, a real time PCR with primers and probe targeting the 16S rRNA gene was used as previously described (Socolovschi et al. 2012), For a specific Rickettsia and Anaplasma phagocytophylum gene, we used the previously described primer and probes (Socolovschi et al. 2012). DATA ANALYSIS Parasitic Indications We calculated prevalence, abundance and the intensity of ticks found at the nests. Parasitic indications proposed by Margolis and al. (1982). Prevalence (P) Prevalence is the percentage ratio of the number of infected nests (N) by parasite given by the number of nests examined (H). P (%) = N/H * 100 Abundance (A) The abundance is the ratio of the total number of individuals of a species of parasite (n) on the total number of nests examined (H). www.tjprc.org [email protected] 26 Fadhila Baziz–Neffah, Tahar Kernif, Assia Beneljouzi, Amina Boutellis, Amirouche Morsli, Zoubir Harrat, Salaheddine Doumandji & Idir Bitam A = n / H Intensity (I) The intensity is the ratio of the total number of individuals of a species of parasite (n) on the number of infected nests (N) I = n / N RESULTS During the visits to Agueli Island in June 2012, about 15 nests were recovered. At last June 2013, 16 nests were recovered. For the both periods, we haven’t recovered the nests with eggs or chick and those with difficult accession. The nests consisted mainly of plant debris recovered by Yellow-legged Gull around the marshes of the lake Réghaia and near habitations from Réghaia beach. The birds added others debris including the feathers, bones and anything that could be found near the nest. Among the 31 nests examined in laboratory, 18 nests were infested by the ticks including 6 of 2012 and 12 of 2013. We collected a total of 227 ticks. The abundance values of these ticks are 10.86 and 4 in 2012 and 2013 respectively. We were noted the intensity value at 27.16 and 5.33 in 2012 and 2013 respectively (table 1). All ticks collected were morphologically identified as soft ticks Carios capensis species. Additionally, these ticks were identified through PCR of the tick mitochondrial 16S rDNA gene. Sequence analysis showed 100% similarity to the corresponding 16S rDNA of Carios capensis (GenBank accession no. JQ824316.1). The quantitative PCR assay showed that all of the samples were negative for all the pathogenic tested bacteria whereas, the positive controls amplify normally. Table 1: Prevalence, Abundance and Intensity of Carios capensis in the Nests of Larus Michahellis in the Island Aguéli Number of Nests Infested by Ticks / Year P% Abundance Intensity Carios capensis Collected Total of Nests Recovered 2012 163 6/15 40 10.86 27.16 2013 64 12/16 75 4 5.33 P: prevalence DISCUSSIONS This study has reported the first identification of Carios capensis in the nests of Larus michahellis in the island Aguéli (Reghaia, Algiers, ALGERIA).
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