Metabolic recovery from exhaustive activity by a small lizard

Physiology of Original and Regenerated Tails in Aegean Wall Lizard (Podarcis erhardii)

“…Thus, it can be predicted that the same values will be obtained in both cases, since movement stops because of the lack of fuel. Our findings were similar to previous studies for tail (Pafilis et al, 2005) and whole-body tissues (Hailey et al, 1987).…”

Physiology of Original and Regenerated Tails in Aegean Wall Lizard (Podarcis erhardii)

“…Thus, it can be predicted that the same values will be obtained in both cases, since movement stops because of the lack of fuel. Our findings were similar to previous studies for tail (Pafilis et al, 2005) and whole-body tissues (Hailey et al, 1987).…”

Comparative Postautotomy Tail Activity in Six Mediterranean Lacertid Lizard Species

“…Long-lasting tail activity has been shown to be particularly effective in diverting a predator's attention away from the lizard body and in increasing a predator's handling time necessary for tail ingestion (Dial and Fitzpatrick 1983). We found average tail thrashing duration to be similar to the times required for intact lizard bodies to reach exhaustion (e.g., 4.9 min for Podarcis erhardii in Hailey et al 1987; see also Bennet and Licht 1972) but markedly longer than the duration of thrashing for autotomized tails reported from many other species of lizards. Specifically, average durations of tail movement for all taxa analyzed here are substantially longer than analogous times in Eumeces fasciatus (0.8 min), Eumeces laticeps (0.95 min), and Holbrookia garnotii (1.7 min; Vitt and Cooper 1986;Lochetto 1998) and closer but still exceeding those of Hemidactylus mabouia (5.2 min; Meyer et al 2002) and Scincella lateralis (approximately 5 min; Dial and Fitzpatrick 1983).…”

“…Anaerobic glycolysis converted most of that glycogen into lactate so that glycogen levels in exhausted tails were much lower than in rested tails. After cessation of movement, tail glycogen levels had decreased to levels comparable to those in exhausted body tissues (average for the six species analyzed vs. 3 mg/g for postexercise hind limb muscle; here p 2.303 Hailey et al 1987). Despite such similarities between autotomized tail and whole-body muscles in both pre-and postexercise glycogen levels, there appear to be significant differences in glycogen metabolism between the two systems.…”

Does shelter influence the metabolic traits of a teleost fish?

“…Animals often seek shelter after intense activity to recover and tend to stay hidden longer after being active than resting (Hailey et al, 1987;Krause et al, 1998), although there is some evidence that finding shelter may be more difficult for exhausted organisms (Brownscombe et al, 2014). Despite this apparent need for sheltering for recovery, "forced" shelter presence vs. absence during the respirometry experiments in this study did not unequivocally affect RT or EPOC.…”

“…As sheltering can be a cost‐effective strategy to replace vigilance (Millidine et al ., 2006), we were expecting that RT would be faster and that EPOC would be reduced in the presence of shelter. Animals often seek shelter after intense activity to recover and tend to stay hidden longer after being active than resting (Hailey et al ., 1987; Krause et al ., 1998), although there is some evidence that finding shelter may be more difficult for exhausted organisms (Brownscombe et al ., 2014). Despite this apparent need for sheltering for recovery, “forced” shelter presence vs .…”

Physiology of Original and Regenerated Tails in Aegean Wall Lizard (Podarcis erhardii)

“…Thus, it can be predicted that the same values will be obtained in both cases, since movement stops because of the lack of fuel. Our findings were similar to previous studies for tail (Pafilis et al, 2005) and whole-body tissues (Hailey et al, 1987).…”

Comparative Postautotomy Tail Activity in Six Mediterranean Lacertid Lizard Species

“…Long-lasting tail activity has been shown to be particularly effective in diverting a predator's attention away from the lizard body and in increasing a predator's handling time necessary for tail ingestion (Dial and Fitzpatrick 1983). We found average tail thrashing duration to be similar to the times required for intact lizard bodies to reach exhaustion (e.g., 4.9 min for Podarcis erhardii in Hailey et al 1987; see also Bennet and Licht 1972) but markedly longer than the duration of thrashing for autotomized tails reported from many other species of lizards. Specifically, average durations of tail movement for all taxa analyzed here are substantially longer than analogous times in Eumeces fasciatus (0.8 min), Eumeces laticeps (0.95 min), and Holbrookia garnotii (1.7 min; Vitt and Cooper 1986;Lochetto 1998) and closer but still exceeding those of Hemidactylus mabouia (5.2 min; Meyer et al 2002) and Scincella lateralis (approximately 5 min; Dial and Fitzpatrick 1983).…”

“…Anaerobic glycolysis converted most of that glycogen into lactate so that glycogen levels in exhausted tails were much lower than in rested tails. After cessation of movement, tail glycogen levels had decreased to levels comparable to those in exhausted body tissues (average for the six species analyzed vs. 3 mg/g for postexercise hind limb muscle; here p 2.303 Hailey et al 1987). Despite such similarities between autotomized tail and whole-body muscles in both pre-and postexercise glycogen levels, there appear to be significant differences in glycogen metabolism between the two systems.…”

Does shelter influence the metabolic traits of a teleost fish?

“…Animals often seek shelter after intense activity to recover and tend to stay hidden longer after being active than resting (Hailey et al, 1987;Krause et al, 1998), although there is some evidence that finding shelter may be more difficult for exhausted organisms (Brownscombe et al, 2014). Despite this apparent need for sheltering for recovery, "forced" shelter presence vs. absence during the respirometry experiments in this study did not unequivocally affect RT or EPOC.…”

“…As sheltering can be a cost‐effective strategy to replace vigilance (Millidine et al ., 2006), we were expecting that RT would be faster and that EPOC would be reduced in the presence of shelter. Animals often seek shelter after intense activity to recover and tend to stay hidden longer after being active than resting (Hailey et al ., 1987; Krause et al ., 1998), although there is some evidence that finding shelter may be more difficult for exhausted organisms (Brownscombe et al ., 2014). Despite this apparent need for sheltering for recovery, “forced” shelter presence vs .…”

Physiology of Original and Regenerated Tails in Aegean Wall Lizard (Podarcis erhardii)

“…Thus, it can be predicted that the same values will be obtained in both cases, since movement stops because of the lack of fuel. Our findings were similar to previous studies for tail (Pafilis et al, 2005) and whole-body tissues (Hailey et al, 1987).…”

Comparative Postautotomy Tail Activity in Six Mediterranean Lacertid Lizard Species

“…Long-lasting tail activity has been shown to be particularly effective in diverting a predator's attention away from the lizard body and in increasing a predator's handling time necessary for tail ingestion (Dial and Fitzpatrick 1983). We found average tail thrashing duration to be similar to the times required for intact lizard bodies to reach exhaustion (e.g., 4.9 min for Podarcis erhardii in Hailey et al 1987; see also Bennet and Licht 1972) but markedly longer than the duration of thrashing for autotomized tails reported from many other species of lizards. Specifically, average durations of tail movement for all taxa analyzed here are substantially longer than analogous times in Eumeces fasciatus (0.8 min), Eumeces laticeps (0.95 min), and Holbrookia garnotii (1.7 min; Vitt and Cooper 1986;Lochetto 1998) and closer but still exceeding those of Hemidactylus mabouia (5.2 min; Meyer et al 2002) and Scincella lateralis (approximately 5 min; Dial and Fitzpatrick 1983).…”

“…Anaerobic glycolysis converted most of that glycogen into lactate so that glycogen levels in exhausted tails were much lower than in rested tails. After cessation of movement, tail glycogen levels had decreased to levels comparable to those in exhausted body tissues (average for the six species analyzed vs. 3 mg/g for postexercise hind limb muscle; here p 2.303 Hailey et al 1987). Despite such similarities between autotomized tail and whole-body muscles in both pre-and postexercise glycogen levels, there appear to be significant differences in glycogen metabolism between the two systems.…”

Does shelter influence the metabolic traits of a teleost fish?

“…Animals often seek shelter after intense activity to recover and tend to stay hidden longer after being active than resting (Hailey et al, 1987;Krause et al, 1998), although there is some evidence that finding shelter may be more difficult for exhausted organisms (Brownscombe et al, 2014). Despite this apparent need for sheltering for recovery, "forced" shelter presence vs. absence during the respirometry experiments in this study did not unequivocally affect RT or EPOC.…”

“…As sheltering can be a cost‐effective strategy to replace vigilance (Millidine et al ., 2006), we were expecting that RT would be faster and that EPOC would be reduced in the presence of shelter. Animals often seek shelter after intense activity to recover and tend to stay hidden longer after being active than resting (Hailey et al ., 1987; Krause et al ., 1998), although there is some evidence that finding shelter may be more difficult for exhausted organisms (Brownscombe et al ., 2014). Despite this apparent need for sheltering for recovery, “forced” shelter presence vs .…”