Comparative temperature and water relations and the effects of thermal acclimation on Tenebrio molitor and Tenebrio obscurus (Coleoptera: Tenebrionidae)

Diet and Feeding Behavior of the Solpugid, EremobatesPalpisetulosus (Solpugida: Eremobatidae)

“…The capture rate for nymphs of Schistocerca vaga (70%) is much higher than that for the adults (0%) (G 19.7, p < 0.001). This is in contrast to results of similar experiments with spiders and scorpions, many of which frequently capture and ingest prey items significantly larger than themselves (Curio, 1976;Nentwig, 1987;Punzo, 1989Punzo, , 1991. In addition, hard-bodied prey such as the carabid beetles, Calosoma scrutator and Cicindela punctulata, and the tenebrionid beetle, Conibius gagates, are captured with relatively low success (0-25%).…”

“…There was no significant difference between animals deprived for 6 vs. 24 hr. This contrasts sharply with the results obtained for the theraphosid spider, Dugesiella echina, from the same region, which exhibited a capture rate of 91% when deprived of food for 72 hr (Punzo, 1989). Data on additional species (Ford, 1978;Nentwig, 1987;Punzo, 1991) also indicate a more efficient prey capture rate for wandering spiders as compared to the solpugid tested in these experiments.…”

“…Preying on lizards agrees with the observations of Banta and Marer (1972) who reported a solpugid, Galeodes sp., feeding on a hatchling lizard. It is interesting to note that arthropods with well known chemical defenses such as blister beetles (Meloidae), velvet ants (Mutillidae), ants (Formicidae), scorpions and centipedes, all of which are common in this area and mostly nocturnal during summer months (Punzo, 1989;Punzo and Huff, 1989), were not taken by these solpugids. Further evidence is provided by the laboratory experiments on prey acceptability ( Table 2).…”

“…These experiments show that the level of food deprivation affects several parameters of feeding in E. palpisetulosus. Although hunger is generally associated with a collective series of internal messages related to caloric deficit (Dethier, 1982), it has proved difficult to observe and quantify (Punzo, 1989). The degree of hunger is influenced by the elapsed time between feeding bouts and has been shown to affect the degree of responsiveness of a predator toward potential prey (Curio, 1976).…”

Diet and Feeding Behavior of the Solpugid, EremobatesPalpisetulosus (Solpugida: Eremobatidae)

“…The capture rate for nymphs of Schistocerca vaga (70%) is much higher than that for the adults (0%) (G 19.7, p < 0.001). This is in contrast to results of similar experiments with spiders and scorpions, many of which frequently capture and ingest prey items significantly larger than themselves (Curio, 1976;Nentwig, 1987;Punzo, 1989Punzo, , 1991. In addition, hard-bodied prey such as the carabid beetles, Calosoma scrutator and Cicindela punctulata, and the tenebrionid beetle, Conibius gagates, are captured with relatively low success (0-25%).…”

“…There was no significant difference between animals deprived for 6 vs. 24 hr. This contrasts sharply with the results obtained for the theraphosid spider, Dugesiella echina, from the same region, which exhibited a capture rate of 91% when deprived of food for 72 hr (Punzo, 1989). Data on additional species (Ford, 1978;Nentwig, 1987;Punzo, 1991) also indicate a more efficient prey capture rate for wandering spiders as compared to the solpugid tested in these experiments.…”

“…Preying on lizards agrees with the observations of Banta and Marer (1972) who reported a solpugid, Galeodes sp., feeding on a hatchling lizard. It is interesting to note that arthropods with well known chemical defenses such as blister beetles (Meloidae), velvet ants (Mutillidae), ants (Formicidae), scorpions and centipedes, all of which are common in this area and mostly nocturnal during summer months (Punzo, 1989;Punzo and Huff, 1989), were not taken by these solpugids. Further evidence is provided by the laboratory experiments on prey acceptability ( Table 2).…”

“…These experiments show that the level of food deprivation affects several parameters of feeding in E. palpisetulosus. Although hunger is generally associated with a collective series of internal messages related to caloric deficit (Dethier, 1982), it has proved difficult to observe and quantify (Punzo, 1989). The degree of hunger is influenced by the elapsed time between feeding bouts and has been shown to affect the degree of responsiveness of a predator toward potential prey (Curio, 1976).…”

The effects of thermal acclimation on immature mortality in the Queensland fruit fly Bactrocera tryoni and the light brown apple moth Epiphyas postvittana at a lethal temperature

“…Although there has been extensive research on temperature acclimation effects on horticultural commodities undergoing heat disinfestation (Paull & McDonald, 1994), and the phenomenon of temperature acclimation in insects is well documented (eg. Chen et al, 1991;Punzo & Huff, 1989;Evans, 1983;Meats, 1973), there appears to be a shortage of specific information on post-harvest fresh fruit pests in relation to heat induced mortality. The present study goes some way to address the deficiency and draws attention to a possible reason for disinfestation failures.…”

Diet and Feeding Behavior of the Solpugid, EremobatesPalpisetulosus (Solpugida: Eremobatidae)

“…The capture rate for nymphs of Schistocerca vaga (70%) is much higher than that for the adults (0%) (G 19.7, p < 0.001). This is in contrast to results of similar experiments with spiders and scorpions, many of which frequently capture and ingest prey items significantly larger than themselves (Curio, 1976;Nentwig, 1987;Punzo, 1989Punzo, , 1991. In addition, hard-bodied prey such as the carabid beetles, Calosoma scrutator and Cicindela punctulata, and the tenebrionid beetle, Conibius gagates, are captured with relatively low success (0-25%).…”

“…There was no significant difference between animals deprived for 6 vs. 24 hr. This contrasts sharply with the results obtained for the theraphosid spider, Dugesiella echina, from the same region, which exhibited a capture rate of 91% when deprived of food for 72 hr (Punzo, 1989). Data on additional species (Ford, 1978;Nentwig, 1987;Punzo, 1991) also indicate a more efficient prey capture rate for wandering spiders as compared to the solpugid tested in these experiments.…”

“…Preying on lizards agrees with the observations of Banta and Marer (1972) who reported a solpugid, Galeodes sp., feeding on a hatchling lizard. It is interesting to note that arthropods with well known chemical defenses such as blister beetles (Meloidae), velvet ants (Mutillidae), ants (Formicidae), scorpions and centipedes, all of which are common in this area and mostly nocturnal during summer months (Punzo, 1989;Punzo and Huff, 1989), were not taken by these solpugids. Further evidence is provided by the laboratory experiments on prey acceptability ( Table 2).…”

“…These experiments show that the level of food deprivation affects several parameters of feeding in E. palpisetulosus. Although hunger is generally associated with a collective series of internal messages related to caloric deficit (Dethier, 1982), it has proved difficult to observe and quantify (Punzo, 1989). The degree of hunger is influenced by the elapsed time between feeding bouts and has been shown to affect the degree of responsiveness of a predator toward potential prey (Curio, 1976).…”

The effects of thermal acclimation on immature mortality in the Queensland fruit fly Bactrocera tryoni and the light brown apple moth Epiphyas postvittana at a lethal temperature

“…Although there has been extensive research on temperature acclimation effects on horticultural commodities undergoing heat disinfestation (Paull & McDonald, 1994), and the phenomenon of temperature acclimation in insects is well documented (eg. Chen et al, 1991;Punzo & Huff, 1989;Evans, 1983;Meats, 1973), there appears to be a shortage of specific information on post-harvest fresh fruit pests in relation to heat induced mortality. The present study goes some way to address the deficiency and draws attention to a possible reason for disinfestation failures.…”

Diet and Feeding Behavior of the Solpugid, EremobatesPalpisetulosus (Solpugida: Eremobatidae)

“…The capture rate for nymphs of Schistocerca vaga (70%) is much higher than that for the adults (0%) (G 19.7, p < 0.001). This is in contrast to results of similar experiments with spiders and scorpions, many of which frequently capture and ingest prey items significantly larger than themselves (Curio, 1976;Nentwig, 1987;Punzo, 1989Punzo, , 1991. In addition, hard-bodied prey such as the carabid beetles, Calosoma scrutator and Cicindela punctulata, and the tenebrionid beetle, Conibius gagates, are captured with relatively low success (0-25%).…”

“…There was no significant difference between animals deprived for 6 vs. 24 hr. This contrasts sharply with the results obtained for the theraphosid spider, Dugesiella echina, from the same region, which exhibited a capture rate of 91% when deprived of food for 72 hr (Punzo, 1989). Data on additional species (Ford, 1978;Nentwig, 1987;Punzo, 1991) also indicate a more efficient prey capture rate for wandering spiders as compared to the solpugid tested in these experiments.…”

“…Preying on lizards agrees with the observations of Banta and Marer (1972) who reported a solpugid, Galeodes sp., feeding on a hatchling lizard. It is interesting to note that arthropods with well known chemical defenses such as blister beetles (Meloidae), velvet ants (Mutillidae), ants (Formicidae), scorpions and centipedes, all of which are common in this area and mostly nocturnal during summer months (Punzo, 1989;Punzo and Huff, 1989), were not taken by these solpugids. Further evidence is provided by the laboratory experiments on prey acceptability ( Table 2).…”

“…These experiments show that the level of food deprivation affects several parameters of feeding in E. palpisetulosus. Although hunger is generally associated with a collective series of internal messages related to caloric deficit (Dethier, 1982), it has proved difficult to observe and quantify (Punzo, 1989). The degree of hunger is influenced by the elapsed time between feeding bouts and has been shown to affect the degree of responsiveness of a predator toward potential prey (Curio, 1976).…”

The effects of thermal acclimation on immature mortality in the Queensland fruit fly Bactrocera tryoni and the light brown apple moth Epiphyas postvittana at a lethal temperature

“…Although there has been extensive research on temperature acclimation effects on horticultural commodities undergoing heat disinfestation (Paull & McDonald, 1994), and the phenomenon of temperature acclimation in insects is well documented (eg. Chen et al, 1991;Punzo & Huff, 1989;Evans, 1983;Meats, 1973), there appears to be a shortage of specific information on post-harvest fresh fruit pests in relation to heat induced mortality. The present study goes some way to address the deficiency and draws attention to a possible reason for disinfestation failures.…”