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	Author	Konstantinov, S.A.; Veselkin, A.G.
	Title	[The intensity and efficiency of a gadfly attack on cattle depending on the number and location of the animals in the herd]			Type	Journal Article
	Year	1989	Publication	Parazitologiia	Abbreviated Journal	Parazitologiia
	Volume	23	Issue	1	Pages	3-10
	Keywords	Animals; Cattle/parasitology; Diptera/physiology; Ecology; Insect Bites and Stings/parasitology/*veterinary; Russia
	Abstract	The effect of group was studied on cattle being attacked by horse flies of three genera. The method of simultaneous registrations of attacking horse flies in herds of 8 to 100 animals and on single cows was used. It has been shown that the effect of group reveals itself only when animals in the herd reach a certain minimum number, the effect rate depending on peculiarities of attacking of a given species of bloodsuckers, such as a part of responding individuals, distance of an attack, duration of contact with an object. These parameters tend to change with increasing number of animals in the herd. Therefore differences in the intensity of attacks on herds with different cattle stock cannot be explained proceeding only from differences in the occupied areas. The number of attacking horse flies decreases from the periphery of the herd to its centre and is not the same in different parts of the periphery. The effectiveness of attacking, ie the part of sucking individuals of a given species (genus) from the number of horse flies attacking for a definite period of time, is the highest in a large herd and increases in its ranges from the periphery to the centre. This dependence leads to a more even distribution of sucking individuals as compared to attacking ones.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	Russian	Summary Language		Original Title	Intensivnost' i effektivnost' napadeniia slepnei na krupnyi rogatyi skot v zavisimosti ot chisla i mestopolozheniia zhivotnykh v stade
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0031-1847	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:2524028			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2674
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