Results 161 to 170 of about 3,946 (178)
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Annals of the Entomological Society of America, 2004
Abstract We examined the nature of sibling egg cannibalism behavior and its developmental consequences in three aphidophagous Coccinellidae that all lay clustered eggs: Cycloneda sanguinea L., Harmonia axyridis (Pallas), and Olla v-nigrum Mulsant. There was variation among species in the proportion of eggs laid singly versus in clusters (C. sanguinea >
J. P. Michaud, A. K. Grant
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Abstract We examined the nature of sibling egg cannibalism behavior and its developmental consequences in three aphidophagous Coccinellidae that all lay clustered eggs: Cycloneda sanguinea L., Harmonia axyridis (Pallas), and Olla v-nigrum Mulsant. There was variation among species in the proportion of eggs laid singly versus in clusters (C. sanguinea >
J. P. Michaud, A. K. Grant
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Environmental Biology of Fishes, 1992
Sibling cannibalism in pike, Esox lucius, larvae and juveniles living in outdoor rearing ponds was studied using stomach contents analysis. For the two initial densities tested (6 and 18 larvae m−2, equivalent to 12 and 36 larvae m−3), cannibalism was non-existent during the larval period (13 to 35 mm total length) and was observed only during the ...
Bry, C. +3 more
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Sibling cannibalism in pike, Esox lucius, larvae and juveniles living in outdoor rearing ponds was studied using stomach contents analysis. For the two initial densities tested (6 and 18 larvae m−2, equivalent to 12 and 36 larvae m−3), cannibalism was non-existent during the larval period (13 to 35 mm total length) and was observed only during the ...
Bry, C. +3 more
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Ecological Entomology, 2011
1. To elucidate the factors responsible for the evolution of host specialisation, prey capture performance in hatchlings of two sibling ladybird species, Harmonia yedoensis and H. axyridis , feeding on four aphid species was examined.
SUZUKI NORIYUKI +2 more
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1. To elucidate the factors responsible for the evolution of host specialisation, prey capture performance in hatchlings of two sibling ladybird species, Harmonia yedoensis and H. axyridis , feeding on four aphid species was examined.
SUZUKI NORIYUKI +2 more
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Journal of Fish Biology, 1999
Cannibalism among starved groups of juvenile (19–48 days old) vundu catfish Heterobranchus longifilis was 66·5% nocturnal, and its impact under modified day length was proportional to the duration of the dark phase. Shallow depth and high population density decreased the intensity of cannibalism, whereas low density and deeper environments had an ...
E. Baras +3 more
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Cannibalism among starved groups of juvenile (19–48 days old) vundu catfish Heterobranchus longifilis was 66·5% nocturnal, and its impact under modified day length was proportional to the duration of the dark phase. Shallow depth and high population density decreased the intensity of cannibalism, whereas low density and deeper environments had an ...
E. Baras +3 more
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Applied Entomology and Zoology, 2015
The adaptive significance of kin cannibalism among beetles has been predominantly reported for carnivorous ladybirds, seldom for herbivorous beetles. Eggs of the red poplar leaf beetle, Chrysomela populi L. (Coleoptera: Chrysomelidae), are deposited in clusters and often eaten by sibling larvae that hatched earlier.
Tadashi Gomi +2 more
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The adaptive significance of kin cannibalism among beetles has been predominantly reported for carnivorous ladybirds, seldom for herbivorous beetles. Eggs of the red poplar leaf beetle, Chrysomela populi L. (Coleoptera: Chrysomelidae), are deposited in clusters and often eaten by sibling larvae that hatched earlier.
Tadashi Gomi +2 more
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Environmental Biology of Fishes, 2003
Cannibalism is a leading cause of young mortality in the red drum, Sciaenops ocellatus, culture, and size disparity is its primary causative factor. Cannibalism did not occur in young fish, graded by a difference of 0.5 cm from 2.0 to 4.5 cm in total length. There was a shift in the size distribution from unimodal (normal) when there was no cannibalism,
Emily Yi-Ying Chang, I Chiu Liao
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Cannibalism is a leading cause of young mortality in the red drum, Sciaenops ocellatus, culture, and size disparity is its primary causative factor. Cannibalism did not occur in young fish, graded by a difference of 0.5 cm from 2.0 to 4.5 cm in total length. There was a shift in the size distribution from unimodal (normal) when there was no cannibalism,
Emily Yi-Ying Chang, I Chiu Liao
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Journal of Fish Biology, 1989
The potential impact of sibling cannibalism on the size and population structure of captive populations of Koi carp, Cyprinus carpio L., which were fed only dry foods, was determined. The rate of cannibalism was found to be positively density‐dependent, with the highest rate being recorded at initial stocking densities of 40 larvae 1 (33.3% of the fish
P. van Damme, S. Appelbaum, T. Hecht
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The potential impact of sibling cannibalism on the size and population structure of captive populations of Koi carp, Cyprinus carpio L., which were fed only dry foods, was determined. The rate of cannibalism was found to be positively density‐dependent, with the highest rate being recorded at initial stocking densities of 40 larvae 1 (33.3% of the fish
P. van Damme, S. Appelbaum, T. Hecht
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Population Ecology, 1989
Summary Sibling (cannibalism among siblings) and non‐sibling cannibalism (cannibalism among non‐siblings) were studied in a natural population of a lady beetle, Harmonia axyridis Pallas .
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Summary Sibling (cannibalism among siblings) and non‐sibling cannibalism (cannibalism among non‐siblings) were studied in a natural population of a lady beetle, Harmonia axyridis Pallas .
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Population Ecology, 1992
Summary The adaptive significance of sibling cannibalism was analyzed in the ladybird beetle Harmonia axyridis at two prey densities. Possible costs and benefits were considered from three points of view: the mother, the cannibal and the victim.
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Summary The adaptive significance of sibling cannibalism was analyzed in the ladybird beetle Harmonia axyridis at two prey densities. Possible costs and benefits were considered from three points of view: the mother, the cannibal and the victim.
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