Behavioural interactions of diamondback terrapins with crab pots demonstrate that bycatch reduction devices reduce entrapment

2015 ◽  
Vol 26 (6) ◽  
pp. 1081-1089 ◽  
Author(s):  
Rebecca K. McKee ◽  
Kristen K. Cecala ◽  
Michael E. Dorcas
Keyword(s):  
Bycatch Reduction ◽  
Behavioural Interactions ◽  
Diamondback Terrapins

scholarly journals Bycatch reduction in the deep-water shrimp (Pandalus borealis) trawl fishery with a large mesh top panel

2021 ◽  
pp. 126001
Author(s):  
Kristine Cerbule ◽  
Nadine Jacques ◽  
Hermann Pettersen ◽  
Ólafur A. Ingólfsson ◽  
Bent Herrmann ◽  
...  
Keyword(s):  
Deep Water ◽  
Pandalus Borealis ◽  
Trawl Fishery ◽  
Bycatch Reduction

scholarly journals Optimal Flow—A Pilot Study Balancing Sheep Movement and Welfare in Abattoirs

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 344
Author(s):  
Melissa J. Starling ◽  
Elyssa Payne ◽  
Paul McGreevy
Keyword(s):  
Pilot Study ◽  
Additional Source ◽  
Movement Rate ◽  
Optimal Outcomes ◽  
Optimal Flow ◽  
Livestock Movement ◽  
Trade Offs ◽  
Behavioural Interactions ◽  
Handling Practices ◽  
Rate Of Movement

Abattoirs are faced with the challenge of moving livestock efficiently through the plant, while also engaging in handling practices that assure good animal welfare. Achieving optimal outcomes for both of these goals can bring them into conflict. An additional source of conflict can arise from the design of the abattoir. These problems are compounded by the dearth of research available to inform how livestock should be handled to achieve all of these goals. We applied the concept of ‘Optimal Flow’ to describe conditions under which rate of movement is maximised while overt signs of distress in sheep are minimised. Effectively, this represents the point at which trade-offs between speed and welfare converge. The current pilot study examined the behavioural interactions between humans (n = 5), livestock herding dogs (n = 7), and sheep (n = 3235) in a large Australian abattoir to describe the factors associated with an increase or decrease in rate of sheep movement per minute. It revealed that distress behaviours in sheep were associated with dog presence and with a decrease in livestock movement rate. However, we found that as sheep density increased, there was increased livestock movement rate as well as an elevated incidence of distress behaviours. Optimal Flow at this abattoir was achieved by maintaining sheep at lower densities. Our report discusses the possible confounds in this interpretation.

Synergistic Effects of Kinship, Sex and Rank in the Behavioural Interactions of Captive Stump-Tailed Macaques

1991 ◽  
Vol 56 (4) ◽  
pp. 177-189 ◽  
Author(s):  
A Santillán-Doherty ◽  
J.L. Diaz ◽  
R. Mondragón-Ceballos
Keyword(s):  
Synergistic Effects ◽  
Behavioural Interactions

scholarly journals Fisheries bycatch reduction within the least-cost biodiversity mitigation hierarchy: Conservatory offsets with an application to sea turtles

2018 ◽  
Author(s):  
Dale Squires ◽  
Victor Restrepo ◽  
Serge Garcia ◽  
Peter Dutton
Keyword(s):  
Sea Turtles ◽  
Sea Turtle ◽  
Impact Mitigation ◽  
Bycatch Reduction ◽  
Conservation Programme ◽  
Mitigation Hierarchy ◽  
Turtle Conservation ◽  
Sea Turtle Conservation ◽  
Fisheries Bycatch

This paper considers fisheries bycatch reduction within the least-cost biodiversity impact mitigation hierarchy. It introduces conservatory offsets that are implemented earlier in the biodiversity impact mitigation hierarchy than conventional compensatory offsets used as instruments of last resort. The paper illustrates implementation in an on-going sea turtle conservation programme by the International Seafood Sustainability Foundation.

Osmoregulation in the Diamondback Terrapin, Malaclemys Terrapin Centrata

1967 ◽  
Vol 46 (1) ◽  
pp. 161-167 ◽  
Author(s):  
P. J. BENTLEY ◽  
W. L. BRETZ ◽  
KNUT SCHMIDT-NIELSEN
Keyword(s):  
Fresh Water ◽  
Solute Concentration ◽  
Diamondback Terrapin ◽  
Malaclemys Terrapin ◽  
Excess Sodium ◽  
Diamondback Terrapins ◽  
Do So

1. While in hypertonic environment diamondback terrapins (Malaclemys centrata) slowly lose water by osmosis through the integument and as urine through the kidney. 2. Small amounts of sodium are gained, probably largely as a result of diffusion through the integument rather than by drinking, and this sodium is principally excreted extrarenally. Nevertheless, the solute concentration in the blood of such turtles increases. 3. When returned to fresh water the animals rehydrate and excrete accumulated excess sodium. 4. In these ways they could undoubtedly survive for extended periods in the absence of fresh water, but it is not clear whether they could do so indefinitely.

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