Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Use visual deterrents on fishing gear Two studies evaluated the effects of using visual deterrents on fishing gear on reptile populations. One study was off the coast of Mexico and one was in the USA. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) Behaviour change (1 study): One replicated, controlled study in the USA found that shark-shaped and spherical deterrents had mixed effects on a range of captive loggerhead turtle behaviours. OTHER (1 STUDY) Unwanted catch: (1 study): One replicated, controlled study off the coast of Mexico found that gillnets with floating shark shapes attached to them caught fewer green turtles than unmodified nets. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3553https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3553Wed, 08 Dec 2021 12:30:30 +0000Collected Evidence: Collected Evidence: Add lights to fishing gear Five studies evaluated the effects of adding lights to fishing gear on reptile populations. Two studies were in the Baja California peninsula (Mexico) and one was in each of Sechura Bay (Peru), the Atlantic and North Pacific and the Adriatic Sea. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Survival (1 study): One randomized, controlled, paired study in the Adriatic Sea found that no loggerhead turtles were caught and died in in gillnets with UV lights whereas some did in nets without lights. BEHAVIOUR (0 STUDIES) OTHER (5 STUDIES) Unwanted catch (5 studies): Four controlled studies (including three replicated and two paired studies) in the Baja California peninsula, Sechura Bay and the Adriatic Sea found that gillnets with LED lights, light sticks or UV lights caught fewer green turtles and loggerhead turtles than nets without lights. One replicated study in the Atlantic and North Pacific found mixed effects of increasing the number of light sticks on longlines on the chance of catching loggerhead and leatherback turtles. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3554https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3554Wed, 08 Dec 2021 13:59:36 +0000Collected Evidence: Collected Evidence: Retain buoys and lines at the sea floor or riverbed when not hauling We found no studies that evaluated the effects on reptile populations of retaining buoys and lines at the sea floor or riverbed when not hauling. ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3555https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3555Wed, 08 Dec 2021 14:08:50 +0000Collected Evidence: Collected Evidence: Retain offal on fishing vessels instead of discarding overboard We found no studies that evaluated the effects on reptile populations of retaining offal on fishing vessels instead of discarding overboard. ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3556https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3556Wed, 08 Dec 2021 14:10:15 +0000Collected Evidence: Collected Evidence: Set gillnets perpendicular to the shore We found no studies that evaluated the effects on reptile populations of setting gillnets perpendicular to the shore. ‘We found no studies’ means that we have not yet found any studies that have directly evaluated 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%2F3557https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3557Wed, 08 Dec 2021 14:11:22 +0000Collected Evidence: Collected Evidence: Promote knowledge exchange between fishers to improve good practice One study evaluated the effects on reptile populations of promoting knowledge exchange between fishers to improve good practice. This study was in the USA. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (1 STUDY) Survival (1 study): One before-and-after study in the USA found that following the introduction of a tool to help facilitate knowledge exchange and the avoidance of loggerhead turtles, loggerhead turtle bycatch was similar compared to the two years before the tool was introduced. BEHAVIOUR (0 STUDIES) OTHER (1 STUDY) Human behaviour change (1 study): One before-and-after study in the USA found that following the introduction of a tool to help facilitate avoidance of loggerhead turtles, fishers did not spend less time fishing in the areas recommended for avoidance by the tool.Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3558https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F3558Wed, 08 Dec 2021 14:13:04 +0000