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Summary More than 24,000 species of helminth parasitize wild birds worldwide, and this number is expanding as interest in wildlife parasitology increases. The objective of the current study was to update the baseline of helminthological surveys conducted on chukar partridges (Alectoris chukar) in northern Pakistan. After reviewing the available literature, a parasite-host association checklist was developed. Nematodes (53.8 %) were the most commonly reported parasite, followed by cestodes (15.3 %) and trematodes (15.3 %) respectively. Seventy (70) chukar partridge (Alectoris chukar) distributed across the Malakand division of northern Pakistan were screened for parasitosis during the period from October 2020 to the end of December 2021. Blood samples of all the specimens were screened for haemoprotozoa, the digestive tract was examined for protozoans and helminths. The examined birds were infected with nine different helminth parasite species identified as cestodes (4 species), trematodes (2 species) and 3 species of nematodes. 29 out of 70 birds were infected, with the male and female infection rates being 36 % and 52.1 %, respectively, with a total prevalence of 41.3 %. Among the infected birds 10 (34.4 %) contained cestodes, 2 (6.8 %) contained trematodes and 17 (58.6 %) contained nematodes. Of which Ascaridia galli and Capillaria phasianina recorded the highest prevalence (10 %). While Amoebotaenia cuneate, Choanotaenia infundibulum, Hypoderaeum conoideum, Lyperosomum longicauda recorded the least (1.4 %) respectively. Reporting of Raillietina echinobothrida, Amoebotaenia cuneate and Lyperosomum longicauda constitute new host records. A. cuneate is a new record in the parasitological list in the country. In terms of host’s sexuality, the overall figures show no significant changes in infection indices.

The current study was designed to evaluate the comparative effects of three selected chemicals such as emamectin (insecticide), acetochlor (herbicide) and topsin-M (fungicide) on haematology, biochemical profile and histopathology of grass carp (Ctenopharyngdon idella). A total of forty C. Idella was collected from fish farm Hattian Kamra and transported to the Chemistry lab of Government Post Graduate College Haripur in plastic bags containing dissolve oxygen. After acclimatization for a week they were randomly segregated in four groups (E0, E1, E2 and E3) and treated with 5ppb emamectin, acetochlor and topsin-M respectively. After 96hrs of chemical treatment, blood and tissue samples were collected from both control and treated groups for investigation of biochemical and histopathological alterations. Obtained results exhibited significant alteration in haematological parameters i.e. total white blood cells count, MCV, MCH and number of platelets significantly (p<0.05) increased while Red blood cells count, hemoglobin, PCV and MCHC significantly (p<0.05) decreased in the experimental groups E1, E2 and E3 as compared to control group. Significant (p<0.05) changes were observed in biochemical parameters i.e. increase in serum glucose, bilirubin, albumins, blood urea, uric acid, cholesterol, serum calcium, phosphorous, sodium, potassium, serum lipase, CKP, LDH and CK MB, while significant decrease in creatinine, triglycerides, HDL-cholesterol, serum iron, serum amylase, SGPT, alkalinity and Phosphate was observed. The observed Histopathological changes in gills include epithelial