01950nas a2200205 4500008004100000022002500041245013900066210006900205260001600274300001200290490000700302520123700309653002401546100001801570700001601588700003201604700001901636700001901655856007001674 2023 eng d a0030-5316, 2157-874500aSeasonal population dynamics of the common chewing lice Columbicola columbae infesting the domestic pigeon Columba livia0 aSeasonal population dynamics of the common chewing lice iColumbi cOct-26-2022 a819-8290 v573 a

The biological and ecological factors experienced across the lifespan by the bird hosts affect the seasonal dynamics of their ectoparasites. The seasonal population of Columbicola columbae which infests the domestic pigeon Columba livia domestica, in Egypt was studied across four seasons in Cairo, Egypt. 25 pairs (25 ♀ and 25 ♂) of Columba livia domestica were visually assessed for chewing lice infestation, twice a month for one year from March 1st 2019 to February 28th, 2020. Life stages (nymphs and adults) of C. columbae were represented across the four seasons. Environmental conditions such as temperature and humidity play a significant role in shaping the population dynamic of this ectoparasite. The intensity rate of C. columbae displayed the highest peak of 78.65 ± 15.28 in autumn, followed by 59.67 ± 20.58 in summer, 26.65 ± 16.66 in winter, and finally 18.65 ± 7.41 in spring. The infestation level of lice was much higher on females (93.64 ± 7.53) than males (81.40 ± 8.70) pigeons. The fluctuations in C. columbae population intensity on pigeons could be related to external environmental factors and host-related factors, which are affected by the season.

10aSeasonal population1 aSoliman, Doaa1 aAdly, Eslam1 aNasser, Mohamed, Gamal El-D1 aShehata, Magdi1 aKamal, Mahmoud uhttps://www.tandfonline.com/doi/abs/10.1080/00305316.2022.213677702366nas a2200277 4500008004100000022001300041245010100054210006900155260001600224300000900240490000700249520151000256653001701766653001201783653001201795653003001807100001601837700003201853700001801885700002401903700002401927700002601951700002501977700001902002856006702021 2020 eng d a2405939000aAnalysis of phoretic relation between chewing lice and hippoboscid flies of Columba livia0 aAnalysis of phoretic relation between chewing lice and hippobosc cJan-12-2020 a5 pp0 v223 a

Phoresy is a biologically mechanical phenomena where an immobile organism hitches on a other mobile organism to translocate. This behaviour is not studied very well on the field level especially between two important parasites infesting the same host. Parasite/parasite interaction is rarely studied through most biological host-parasite systems. Here, we evaluated the phoretic relation between parasitic chewing lice and hippoboscid flies (Pseudolynchia canariensis) on rock pigeons. A total of 69 captivated rock pigeons, Columba livia, were examined for the parasitic chewing lice and hippoboscid flies in Giza Zoo and two local farms near Cairo, Egypt. Results indicated that there is a positive correlation between infestation of hippoboscid flies and chewing lice. Also, the analysis of louse/louse interaction using ANOVA indicated a significant difference between the three chewing louse species which were recorded on the rock pigeons with relatively high abundance of two species, Columbicola columbae and Campanulotes compar. The analysis of hippoboscid flies' abundance and its relation with chewing lice infestation indicate a significant increase of lice intensity in case of high infestation with the fly. The level of hygiene of nest may be inversely related to level of parasite infestation. This work forms a step in the process of understanding parasite/parasite and host/parasite interactions using two parasitic species with a characteristic phoretic behaviour in nature

10aChewing lice10aPhoresy10aPigeons10aPseudolynchia canariensis1 aAdly, Eslam1 aNasser, Mohamed, Gamal El-D1 aSoliman, Doaa1 aAl-Ashaal, Sara, A.1 aKenawy, Mohamed, A.1 aGustafsson, Daniel, R1 aAlghamdi, Khalid, M.1 aShehata, Magdi uhttps://linkinghub.elsevier.com/retrieve/pii/S240593902030277X01747nas a2200229 4500008004100000022001300041245015500054210006900209300001200278490000800290520098200298653001701280653001001297653001601307653001601323100001601339700003201355700001801387700002601405700001901431856006701450 2019 eng d a0001706X00aNew records of chewing lice (Phthiraptera: Amblycera, Ischnocera) from Egyptian pigeons and doves (Columbiformes), with description of one new species0 aNew records of chewing lice Phthiraptera Amblycera Ischnocera fr a22 - 270 v1903 a

Little information is available about the chewing lice of wild birds of Egypt, including common groups such as pigeons and doves (Columbiformes). Through this work, parasitic chewing lice of common columbiformes of Egypt were revised including new data. Three species of pigeons and doves (Streptopelia decaocto Frivaldszky 1838, Spilopelia senegalensis Linnaeus 1766 and Columba livia Gmelin 1789) were examined for chewing lice at three different localities. A total of 124 specimens of lice were collected. Nine species were identified from these samples; one species (Columbicola joudiae n. sp.) was considered a new species to science, six species were recorded from Egypt for the first time, and two species have been identified in Egypt before. Taxonomic and ecological remarks for all identified chewing lice samples are provided along with known and local hosts, measurements and material examined. Description and images of the new species are also provided.

10aChewing lice10aEgypt10aNew records10anew species1 aAdly, Eslam1 aNasser, Mohamed, Gamal El-D1 aSoliman, Doaa1 aGustafsson, Daniel, R1 aShehata, Magdi uhttps://linkinghub.elsevier.com/retrieve/pii/S0001706X18311021