Collected Evidence: Collected Evidence: Procambarus crayfish control: Encouraging predators Two replicated, controlled studies in Italy found that eels fed on the red swamp crayfish and reduced population size. One replicated, controlled study from France in 2001 found that pike predated red swamp crayfish.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1030https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1030Fri, 03 Jul 2015 15:15:43 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Sterilization of males One replicated laboratory study in Italy found that exposing male red swamp crayfish to X-rays reduced the number of offspring they produced by 43%.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1032https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1032Fri, 03 Jul 2015 15:16:20 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Removal of food source No evidence was captured on the effect of removing food sources as a control tool for Procambarus crayfish. '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%2Fwww.conservationevidence.com%2Factions%2F1033https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1033Fri, 03 Jul 2015 15:16:38 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Draining the waterway No evidence was captured on the effect of draining the waterway as a control tool for Procambarus crayfish. '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%2Fwww.conservationevidence.com%2Factions%2F1034https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1034Fri, 03 Jul 2015 15:16:57 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Remove the crayfish by electrofishing No evidence was captured on the effect of electrofishing as a control tool for Procambarus crayfish. '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%2Fwww.conservationevidence.com%2Factions%2F1035https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1035Fri, 03 Jul 2015 15:17:11 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Add chemicals to the water One replicated, controlled study in Italy found that red swamp crayfish could be killed using the natural pyrethrum Pyblast at a concentration of 0.05 mg/l, but that application to drained crayfish burrows was not effective.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1036https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1036Fri, 03 Jul 2015 15:17:25 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Create barriers A before-and-after study conducted between 2007 and 2010 in Spain found that the use of concrete dams across a stream, specifically designed with features to prevent red swamp crayfish from crawling over them, were effective at containing spread of the population upstream.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1037https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1037Fri, 03 Jul 2015 15:18:00 +0100Collected Evidence: Collected Evidence: Procambarus crayfish control: Relocate vulnerable crayfish No evidence was captured for the effect of relocating native species as a management tool against the effects of Procambarus crayfish. '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%2Fwww.conservationevidence.com%2Factions%2F1038https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1038Fri, 03 Jul 2015 15:18:14 +0100Collected Evidence: Collected Evidence: Primates: Scatter food throughout enclosure Two replicated, before-and-after and one before-and-after study in the USA found that scattering food throughout the enclosure increased feeding and exploratory behaviours in rhesus macaques and reduced abnormal behaviours in chimpanzees and aggression in lemurs. One before-and-after study in the USA found that when food was scattered throughout the enclosure more foraging was seen and activity levels increased in gorillas.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1315https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1315Wed, 12 Oct 2016 13:58:47 +0100Collected Evidence: Collected Evidence: Primates: Present food in puzzle feeders Two before-and-after studies in the USA and the UK found that the use of puzzle feeders decreased food sharing, increased foraging behaviour, and the use of tools but also aggression. One replicated, before-and-after study in the USA found that the use of puzzle feeders increased time spent feeding and less time inactive.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1318https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1318Wed, 12 Oct 2016 14:51:50 +0100Collected Evidence: Collected Evidence: Primates: Present food which requires the use (or modification) of tools No evidence was captured for the effects of presenting food to primates that required the use (or modification) of tools. '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%2Fwww.conservationevidence.com%2Factions%2F1319https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1319Wed, 12 Oct 2016 14:57:31 +0100Collected Evidence: Collected Evidence: Primates: Present food in water (including dishes and ponds) One replicated, before-and-after study in the USA found that when exposed to water-filled troughs, monkeys were more active and increased their use of tools.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1320https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1320Wed, 12 Oct 2016 15:01:04 +0100Collected Evidence: Collected Evidence: Primates: Present food frozen in ice Two replicated and before-and-after studies in the USA and Ireland, found that when food was presented in ice, feeding time increased and inactivity decreased.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1321https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1321Wed, 12 Oct 2016 15:05:37 +0100Collected Evidence: Collected Evidence: Primates: Present food dipped in food colouring One before-and-after study in the USA found that when food was dipped in food colouring juvenile and adult orangutans ate more and took less time to consume it.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1322https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1322Wed, 12 Oct 2016 15:12:41 +0100Collected Evidence: Collected Evidence: Primates: Present food items whole instead of processed One before-and-after study in the USA found that when macaques were presented with whole foods instead of chopped foods the amount consumed and time spent feeding increased.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1323https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1323Wed, 12 Oct 2016 15:33:43 +0100Collected Evidence: Collected Evidence: Primates: Provide live vegetation in planters for foraging One replicated, before-and-after study in the USA reported that chimpanzees spent more time foraging when provided with planted rye grass and scattered sunflower seeds compared to browse and grass added to the enclosure with their normal diet.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1327https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1327Thu, 13 Oct 2016 08:18:54 +0100Collected Evidence: Collected Evidence: Primates: Provide gum (including artificial gum) No evidence was captured for the effects of providing gum (including artificial gum) to primates. '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%2Fwww.conservationevidence.com%2Factions%2F1330https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1330Thu, 13 Oct 2016 08:29:14 +0100Collected Evidence: Collected Evidence: Primates: Provide nectar (including artificial nectar) No evidence was captured for the effects of providing nectar (including artificial nectar) to primates. '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%2Fwww.conservationevidence.com%2Factions%2F1331https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1331Thu, 13 Oct 2016 08:31:00 +0100Collected Evidence: Collected Evidence: Primates: Provide cut branches (browse) One replicated, before-and-after study in the Netherlands and Germany found that when presented with stinging nettles captive gorillas used the same processing skills as wild gorillas to forage.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1332https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1332Thu, 13 Oct 2016 08:33:09 +0100Collected Evidence: Collected Evidence: Primates: Provide live invertebrates One before-and-after study in the UK found that when provided with live insect prey inactivity reduced and foraging increased in captive loris to levels seen in wild loris.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1333https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1333Thu, 13 Oct 2016 08:35:55 +0100Collected Evidence: Collected Evidence: Primates: Provide herbs or other plants for self-medication No evidence was captured for the effects of providing herbs or other plants to primates for self-medication. '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%2Fwww.conservationevidence.com%2Factions%2F1334https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1334Thu, 13 Oct 2016 08:37:30 +0100Collected Evidence: Collected Evidence: Primates: Provide fresh produce One replicated, before-and-after study in the USA found that when fresh produce was offered instead of pellet feed more time was spent feeding and less time inactive in rhesus macaques.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1335https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1335Thu, 13 Oct 2016 08:40:05 +0100Collected Evidence: Collected Evidence: Primates: Provide food at natural (wild) feeding times No evidence was captured for the effects of providing food to primates at natural (wild) feeding times. '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%2Fwww.conservationevidence.com%2Factions%2F1339https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1339Thu, 13 Oct 2016 08:48:18 +0100Collected Evidence: Collected Evidence: Primates: Provide access to food at all times (day and night) No evidence was captured for the effects of providing primates access to food at all times (day and night). '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%2Fwww.conservationevidence.com%2Factions%2F1340https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1340Thu, 13 Oct 2016 08:49:38 +0100Collected Evidence: Collected Evidence: Primates: Use of automated feeders No evidence was captured for the effects of using an automated feeder for primates. '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%2Fwww.conservationevidence.com%2Factions%2F1341https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F1341Thu, 13 Oct 2016 08:50:55 +0100
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

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