Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Remove/treat endoparasites and diseases Three studies from across the world investigating a range of taxa and parasites found that birds had higher productivity or survival if either chicks or adults were treated for endoparasites. One small study from Spain found no effect of Staphylococcus aureus treatment on eagle survival, while a study from Mauritius found uncertain evidence as to whether trichomoniasis treatment increased survival of pink pigeons Nesoenas mayeri after fledging. A randomised, replicated and controlled trial from the Netherlands found lower parasite burdens but also lower survival in Eurasian oystercatcher Haematopus ostralegus chicks treated with anthelmintic drugs. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F434https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F434Wed, 22 Aug 2012 14:54:24 +0100Collected Evidence: Collected Evidence: Exclude or control ‘reservoir species’ to reduce parasite burdens A literature review found no compelling evidence that culling mountain hares Lepus timidus (a carrier of the ticks that carry louping ill virus) increased red grouse Lagopus lagopus scoticus populations. A controlled before-and-after study from the UK did find that there was a significant increase in chick production on grouse moors with hare culling, compared to control sites but no change in population density. A comment on this paper argued that the controls used in it were not adequate. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F435https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F435Wed, 22 Aug 2012 15:02:05 +0100Collected Evidence: Collected Evidence: Remove/treat ectoparasites to increase survival or reproductive success We found no evidence on the effects of removing/treating ectoparasites to increase survival or reproductive success. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action.Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F436https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F436Wed, 22 Aug 2012 15:22:12 +0100Collected Evidence: Collected Evidence: Remove ectoparasites from feathers to increase survival or reproductive success A replicated and controlled study in the UK found that red grouse Lagopus lagopus scoticus treated with spot applications had lower tick and disease burdens and higher survival than controls, whilst birds with impregnated tags had lower tick burdens only. A replicated ex situ study in Hawaii found that CO2 was the most effective way to remove lice from feathers, although this treatment did not kill the lice. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F437https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F437Wed, 22 Aug 2012 15:30:29 +0100Collected Evidence: Collected Evidence: Remove ectoparasites from nests to increase survival or reproductive success Six of the seven studies that investigated infestation rates found lower rates in nests treated for ectoparasites, one (that used microwaves to treat nests) did not find fewer parasites. Two studies from the USA found higher survival or lower abandonment in nests treated for ectoparasites, whilst seven studies from across the world found no differences in survival, fledging rates or productivity between nests treated for ectoparasites and controls. Two studies from the USA and the UK found that chicks from nests treated for ectoparasites were in better condition than those from control nests. Four studies found no such effect. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F438https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F438Wed, 22 Aug 2012 18:20:13 +0100Collected Evidence: Collected Evidence: Reduce nest ectoparasites by providing beneficial nesting materialA randomised, replicated and controlled experiment in Canada found lower numbers of some, but not all, parasites in nests provided with beneficial nesting material, but that there was no effect on fledging rates or chick condition. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F439https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F439Thu, 23 Aug 2012 14:26:34 +0100Collected Evidence: Collected Evidence: Guard nests to reduce risk of ectoparasites We found no evidence on the effects of guarding nests to reduce the risk of ectoparasites 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action.Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F440https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F440Thu, 23 Aug 2012 14:27:25 +0100Collected Evidence: Collected Evidence: Remove/control adult brood parasites All 11 studies from across the world that investigated parasitism rates found that they were lower following cowbird Molothrus spp. control. One study from Ecuador found an increase in host species population after cowbird control, but two American studies found no such effect. Five studies from the Americas found higher productivities or success rates of host nests when cowbirds were removed, five found that at least some measures of productivity did not change with cowbird control. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F441https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F441Thu, 23 Aug 2012 14:28:02 +0100Collected Evidence: Collected Evidence: Remove brood parasite eggs from target species’ nests A controlled before-and-after study on Puerto Rico found lower rates of parasitism of yellow-shouldered blackbird Agelaius xanthomus nests when shiny cowbird Molothrus bonariensis eggs were removed from nests. A replicated, controlled study from 1997-1999 in grassy fields in New York State, USA found that song sparrow Melospiza melodia nests that had cowbird eggs removed from them had lower success than nests which were parasitised and that did not have eggs removed. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F443https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F443Thu, 23 Aug 2012 15:56:54 +0100Collected Evidence: Collected Evidence: Use false brood parasite eggs to discourage brood parasitismA replicated, controlled experiment in the USA found lower parasitism rates for red-winged blackbird Agelaius phoeniceus nests with false or real brown-headed cowbird Molothrus ater eggs added to them. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F444https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F444Thu, 23 Aug 2012 16:03:29 +0100Collected Evidence: Collected Evidence: Provide supplementary food to increase parental presence and so reduce brood parasitism We found no evidence on providing supplementary food to increase parental presence and so reduce boord parasitims on bird populations. 'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action.Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F445https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F445Thu, 23 Aug 2012 16:04:16 +0100Collected Evidence: Collected Evidence: Alter artificial nest sites to discourage brood parasitismA replicated trial from Puerto Rico found that brood parasitism levels were extremely high across all nest box designs tested. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F446https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F446Thu, 23 Aug 2012 16:06:05 +0100