PREY PREFERENCES OF CALOSOMA SYCOPHANTA L. (COLEOPTERA: CARABIDAE) LARVAE AND RELATIONSHIP OF PREY CONSUMPTION TO PREDATOR SIZE

1988 ◽  
Vol 120 (10) ◽  
pp. 873-880 ◽  
Author(s):  
Ronald M. Weseloh

AbstractIn feeding choice tests, first- and second-instar larvae of Calosoma sycophanta L. preferred gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), pupae as prey but third-instar larvae most often consumed caterpillars. All beetle larvae preferred female pupae over male pupae. In non-choice feeding tests, older predator larvae consumed more gypsy moth fifth-instar larvae than the larger sixth-instar larvae, but the total weights of prey eaten in both cases were similar. First-instar larvae of C. sycophanta only partially consumed prey, and caterpillar size did not affect the total numbers eaten. Beetle larvae ate as many female gypsy moth pupae as male pupae, but larger larvae consumed greater weights of the former than of the latter. As a consequence, C. sycophanta larvae fed female pupae were larger than those provided with male pupae. However, for a given increase in size, third-instar larval beetles ingested the same weight of food no matter what the prey size was. Conversely, young beetle larvae seemed to require greater amounts of the body contents of large prey for a given size increase, probably because fluids from large prey were lost during predator attack. The information gained in this study may make it possible to use sizes of field-observed C. sycophanta larvae to predict numbers of prey they have killed.

1993 ◽  
Vol 125 (4) ◽  
pp. 749-759 ◽  
Author(s):  
F.W. Quednau

AbstractLaboratory observations on the biology of Ceranthia samarensis (Villeneuve), a tachinid parasitoid of the gypsy moth, were carried out in the laboratory at 22 °C day/15 °C night, 85–90% RH, and a 12L:12D photoperiod. Older (5–6 days post-eclosion) males mated readily with newly emerged females. Mating success was 60%. The gestation period of the mated females was 10–12 days. Laboratory-reared (on diet) second- and third-instar gypsy moth larvae feeding on newly grown foliage of Quercus rubra L. were exposed to gravid females of the parasitoid. Ceranthia samarensis ovolarviposited on the body of the host. The first-instar larva penetrated the host cuticle and developed internally, forming a respiratory funnel that caused a dark circular scar on the lateral side of the caterpillar. The average number of progeny (puparia) produced over the lifetime of a C. samarensis female was 55.0 ± 5.0 (SE) and average longevity was 4.1 ± 1.7 (SE) days. Diapause of the puparia was facultative and induced by temperatures below 20 °C combined with a 12L:12D photoperiod. In nondiapause individuals, total generation time was 22–40 days. To obtain diapause insects, puparia were stored for2monthsat 15 °C, 100% RH, and 12L:12D photoperiod for development of pharate adults. Cold storage at 2–4 °C and 100% RH for at least 5 months was required to obtain up to 75% eclosion after 5–9 days the following year.


2017 ◽  
Vol 59 (2) ◽  
pp. 014-021
Author(s):  
Saya K. Koyshibaeva ◽  
◽  
Shokhan A. Alpeyisov ◽  
Evgeniy V. Fedorov ◽  
Nina S. Badryzlova ◽  
...  

Author(s):  
Joshua S. Walden

The book’s epilogue explores the place of musical portraiture in the context of posthumous depictions of the deceased, and in relation to the so-called posthuman condition, which describes contemporary changes in the relationship of the individual with such aspects of life as technology and the body. It first examines Alfred Hitchcock’s Vertigo to view how Bernard Herrmann’s score relates to issues of portraiture and the depiction of the identity of the deceased. It then considers the work of cyborg composer-artist Neil Harbisson, who has aimed, through the use of new capabilities of hybridity between the body and technology, to convey something akin to visual likeness in his series of Sound Portraits. The epilogue shows how an examination of contemporary views of posthumous and posthuman identities helps to illuminate the ways music represents the self throughout the genre of musical portraiture.


2011 ◽  
Vol 76 (3) ◽  
pp. 403-428 ◽  
Author(s):  
Jack M. Broughton ◽  
Michael D. Cannon ◽  
Frank E. Bayham ◽  
David A. Byers

The use of body size as an index of prey rank in zooarchaeology has fostered a widely applied approach to understanding variability in foraging efficiency. This approach has, however, been critiqued—most recently by the suggestion that large prey have high probabilities of failed pursuits. Here, we clarify the logic and history of using body size as a measure of prey rank and summarize empirical data on the body size-return rate relationship. With few exceptions, these data document strong positive relationships between prey size and return rate. We then illustrate, with studies from the Great Basin, the utility of body size-based abundance indices (e.g., the Artiodactyl Index) when used as one component of multidimensional analyses of prehistoric diet breadth. We use foraging theory to derive predictions about Holocene variability in diet breadth and test those predictions using the Artiodactyl Index and over a dozen other archaeological indices. The results indicate close fits between the predictions and the data and thus support the use of body size-based abundance indices as measures of foraging efficiency. These conclusions have implications for reconstructions of Holocene trends in large game hunting in western North America and for zooarchaeological applications of foraging theory in general.


PMLA ◽  
1932 ◽  
Vol 47 (1) ◽  
pp. 89-96
Author(s):  
Daniel C. Boughner

From Plato and Aristotle, Hippocrates and Galen, through the medieval commentators, the Elizabethans inherited a body of complex psychological principles. An examination of these principles and their bearing on The Faerie Queene has so far been only casual and incidental. Since in Book ii, Canto ix, the poet combines one of the most widely used of medieval motifs—the conception of the body as a world, city, or castle—with certain current doctrines of psychology, such an inquiry is especially apposite. Spenser's use of the abundant contemporaneous literature of psychology affords material for an extended treatment such as that which Miss Anderson has made of Shakespeare's plays. The present study purposes to set forth one aspect of his system of psychology—his psychology of memory in the allegory of the Castle of Alma, to make clear the relationship of his system to the current Elizabethan doctrines, and to establish the purpose of certain departures from those doctrines.


2001 ◽  
Vol 75 (2) ◽  
pp. 165-169 ◽  
Author(s):  
O. Hrazdilová ◽  
V. Unzeitig ◽  
V. Znojil ◽  
L. Izakovicová-Hollá ◽  
P. Janků ◽  
...  

1963 ◽  
Vol 40 (1) ◽  
pp. 23-56 ◽  
Author(s):  
RICHARD BAINBRIDGE

1. Observations made on bream, goldfish and dace swimming in the ‘Fish Wheel’ apparatus are described. These include: 2. An account of the complex changes in curvature of the caudal fin during different phases of the normal locomotory cycle. Measurements of this curvature and of the angles of attack associated with it are given. 3. An account of changes in area of the caudal fin during the cycle of lateral oscillation. Detailed measurements of these changes, which may involve a 30 % increase in height or a 20 % increase in area, are given. 4. An account of the varying speed of transverse movement of the caudal fin under various conditions and the relationship of this to the changes in area and amount of bending. Details of the way this transverse speed may be asymmetrically distributed relative to the axis of progression of the fish are given. 5. An account of the extent of the lateral propulsive movements in other parts of the body. These are markedly different in the different species studied. Measurements of the wave length of this movement and of the rate of progression of the wave down the body are given. 6. It is concluded that the fish has active control over the speed, the amount of bending and the area of the caudal fin during transverse movement. 7. The bending of the fin and its changes in area are considered to be directed to the end of smoothing out and making more uniform what would otherwise be an intermittent thrust from the oscillating tail region. 8. Some assessment is made of the proportion of the total thrust contributed by the caudal fin. This is found to vary considerably, according to the form of the lateral propulsive movements of the whole body, from a value of 45% for the bream to 84% for the dace.


Author(s):  
Martin Eisner

This article investigates the significance of the manuscripts of Virgil and other classical poets that Dante might have read. Calling attention to the presence of musical notation (neumes) in copies that share the particular Virgilian readings Dante quotes, this essay explores the resonance of one of those passages (Aeneas’ dream of Hector) in Dante’s poem. It shows how Dante uses this Virgilian episode to craft his encounter with Manfred where he considers the relationship of body and soul that constitutes one of the major differences between classical and Christian thought, as Augustine frequently noted. Just as Christian anthropology maintains that the body constitutes an essential element of the human person, this essay argues that the materiality of the texts Dante read constitutes a crucial source for understanding how Dante interpreted these texts.


1980 ◽  
Vol 10 (5) ◽  
pp. 423
Author(s):  
Sudargo Gautama

Apa yang diartikan dengan "Hukum Dagang Internasional" (International Trade Law) ? Menurut laporan dari pada Sekjen PBB, yang telah diajukan untuk memenuhi Resolusi Sidang Umum no. 2102/XX/ttgl. 20 Desember 1965 dengan istilah dimaksudkan : "Keseluruhan kaidah-kaidah yang mengatur hubungan-hubungan dagang bersifat Hukum Perdata dan mencakup berbagai negara" (The body of rules governing commercial relationship of a private law nature involving different countries).Sebagai topik-topik yang termasuk bidang ini dan dianggap dapat diselidiki dengan cara kerjasama khusus antara lain disebut :Jual Beli Internasional :(1) Mengenai pembentukan kontrak-kontrak.(2) Mengenai perjanjian-perjanjian keagenan.(3) Mengenai jual beli secara eksklusip.Surat-surat berharga (negotiable instruments) dan kredit dagang oleh pihak Bank.Hukum berkenaan dengan diadakannya kegiatan-kegiatan dagang dibidang Hukum Dagang.Asuransi.Pengangkutan : Transport barang     —  Pengangkutan barang melalui laut.     —  Pengangkutan barang melalui udara.     —  Pengangkutan barang melalui jalanan;     —  Pengangkutan barang melalui kereta api;     —  Pengangkutan barang melalui perairan di dalam negeri.Hukum dagang milik perindustrian dan Hak Cipta;Arbitrase perdagangan


1964 ◽  
Vol 6 (2) ◽  
pp. 169-178 ◽  
Author(s):  
R. V. Large

1. Thirty Suffolk × Half bred lambs were slaughtered at the following ages: two twin lambs at birth and two singles and two twins at 1, 2, 3, 4, 6, 8 and 16 weeks of age.2. The following weights were recorded: live-weight immediately before slaughter; and carcass, head, skin, feet, alimentary tract, heart, liver, kidneys, lungs and trachea, and blood immediately afterwards.3. The alimentary tract was emptied and weighed in four separate parts; reticulo-rumen, omasum-abomasum, small intestine, large intestine.4. The volumes of the reticulo-rumen and the omasum-abomasum were measured by immersing in water and filling the organs with water to 2 cm. pressure.5. The in vitro digestive efficiency of rumen liquor from lambs of 1, 2, 3 and 4 weeks of age was assessed.6. Empty body weight was considered to be valuable in comparing animals of different ages or from different feeding regimes or at different times of the year because variations in gut ‘fill’ were eliminated.7. There were no differences between singles and twins in the relationship of the fresh weights of the parts of the body to empty body weight, except that development of the liver and the blood was rather slower for singles.8. Little evidence was found of a difference in rate of development of the alimentary tract between singles an d twins, although the log an d square root transformation suggested a possible difference in reticulo-rumen size in favour of twins, significant at the 5% level.


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