Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Use dyed bait Two studies evaluated the effects of using dyed bait on reptile populations. One study was in Costa Rica and one was in the North Pacific. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) Use (1 study): One randomized, paired, controlled study in Costa Rica found that loggerhead and Kemp’s ridley turtles showed mixed preferences for dyed compared to non-dyed bait in captive trials. OTHER (2 STUDIES) Unwanted catch (2 studies): Two paired studies (including one randomized, controlled study) in Costa Rica and the North Pacific found that hooks with dyed bait caught a similar number of olive ridley and green turtles and loggerhead turtles compared to hooks with non-dyed bait. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3611https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3611Thu, 09 Dec 2021 10:46:51 +0000Collected Evidence: Collected Evidence: Use a different bait type: Sea turtles Nine studies evaluated the effects of using a different bait type on sea turtle populations. Three studies were in each of the Atlantic and Pacific, and one was in each of the Atlantic and north Pacific, the Gulf of Garbes (Tunisia) and Italy. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (2 STUDIES) Survival (2 studies): Two studies (including one replicated, controlled study) off the coast of Hawaii and in the Southern Atlantic found that the percentage of loggerhead and leatherback turtles that survived being caught by fish-baited or squid-baited hooks or fish-baited circle hooks and squid-baited J-hooks was similar. Condition (1 study): One before-and-after study off the coast of Hawaii found that fish-baited circle hooks deeply hooked fewer leatherback and hard-shell turtles compared to squid-baited J-hooks. BEHAVIOUR (1 STUDY) Use (1 study): One controlled study in Italy found that loggerhead turtles in a captive setting were less likely to bite at fish bait than squid bait. The study also found that smaller turtles were more likely to bite at mackerel bait and larger turtles at squid bait. OTHER (8 STUDIES) Unwanted catch (8 studies): Four of five studies (including one replicated, paired, controlled study) in the North Pacific, Eastern Pacific, Atlantic and Atlantic and North Pacific found that fish-baited hooks caught fewer sea turtles or were swallowed by fewer olive ridley turtles than squid baited hooks. One study also found that fish bait in combination with larger circle hooks lead to the highest percentage of external hookings. The other study found mixed effects of using fish or squid-baited hooks on the unwanted catch of hard-shell and leatherback turtles. One replicated, controlled study in the north-western Atlantic Ocean found that fish-baited J-hooks caught fewer sea turtles compared to squid-baited hooks. The study also found that unwanted catch was more similar for fish-baited and squid-baited circle hooks. One before-and-after study off the coast of Hawaii found that fish-baited circle hooks caught fewer loggerhead and leatherback turtles compared to compared to squid-baited J-hooks. One replicated study in the Gulf of Garbes found that hooks baited with stingray caught fewer loggerhead turtles compared to fish-baited hooks. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3612https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3612Thu, 09 Dec 2021 12:02:07 +0000Collected Evidence: Collected Evidence: Use a different bait type: Tortoises, terrapins, side-necked & softshell turtles Two studies evaluated the effects of using a different bait type on tortoise, terrapin, side-necked and softshell turtles. Both studies were in the USA. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (0 STUDIES) OTHER (2 STUDIES) Unwanted catch (2 studies): One randomized, controlled study in the USA found that a crab pot with mackerel bait caught more diamondback terrapins than when chicken bait or no bait was used. One replicated, paired study in the USA found that hoop nets with soap bait caught fewer turtles than nets with cheese bait. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3613https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3613Thu, 09 Dec 2021 12:21:49 +0000Collected Evidence: Collected Evidence: Use a different bait type: Snakes & lizards We found no studies that evaluated the effects of using a different bait type on snake and lizard populations. ‘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%2Fconservationevidencejournal.com%2Factions%2F3614https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3614Thu, 09 Dec 2021 13:22:03 +0000Collected Evidence: Collected Evidence: Use a different bait type: Crocodilians We found no studies that evaluated the effects of using a different bait type on crocodilian populations. ‘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%2Fconservationevidencejournal.com%2Factions%2F3615https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3615Thu, 09 Dec 2021 13:23:25 +0000Collected Evidence: Collected Evidence: Change hook baiting technique One study evaluated the effects of changing the hook baiting technique on reptile populations. This study was in the USA. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) Use (1 study): One study in the USA found that captive loggerhead turtles were more likely to attempt to swallow thread-baited than single-baited hooks. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3616https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F3616Thu, 09 Dec 2021 13:24:48 +0000