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| 001 |
in00000086731 |
| 005 |
20220104090729.0 |
| 008 |
820922s1981 xx a bm 000 0 eng d |
| 035 |
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|9 AAK0831AM
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| 035 |
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|a (OCoLC)08794500
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| 035 |
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|a (OCoLC)8794500
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| 035 |
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|a (OCoLC)ocm08794500
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| 040 |
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|a TXA
|b eng
|c TXA
|d OCL
|d OCLCQ
|d OCLCG
|d OCLCQ
|d UMI
|d OCLCO
|d TXA
|d UtOrBLW
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| 049 |
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|a TXAM
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| 099 |
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|a 1981
|a Dissertation
|a R581
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| 100 |
1 |
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|a Ring, Dennis Randall,
|d 1952-
|0 http://id.loc.gov/authorities/names/no99075982
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| 245 |
1 |
0 |
|a Predicting biological events in the life history of the pecan nut casebearer using a degree day model.
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| 264 |
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0 |
|a [Place of publication not identified] :
|b [publisher not identified],
|c 1981.
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| 300 |
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|a xvi, 194 leaves :
|b illustrations ;
|c 29 cm
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| 336 |
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|a text
|b txt
|2 rdacontent
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| 337 |
|
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|a unmediated
|b n
|2 rdamedia
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| 338 |
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|a volume
|b nc
|2 rdacarrier
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| 500 |
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|a "Major subject: Entomology."
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| 500 |
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|a Typescript (photocopy).
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| 500 |
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|a Vita.
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| 502 |
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|b Ph. D. in Philosophy
|c Texas A & M University
|d 1981
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| 504 |
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|a Includes bibliographical references (leaves 164-175).
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| 520 |
3 |
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|a A degree day model for predicting overwintering and 1st summer generation pecan nut casebearer (pnc), Acrobasis nuxvorella Neunzig (Lepidoptera: Pyralidae), activity was developed. The starting date and base temperature resulting in the most accurate predictions was determined at College Station, Texas using temperature records from Climatological Data (1918-1923) and field data from Bilsing (1926, 1927) in 1918-1923. Model predictions were compared to the mean calendar date of activity, the model using temperature records from hygrothermographs and the model using a sine curve modification. The model was verified at Shreveport, Louisiana and Brownwood, Texas using pnc black light trap catch data (Calcote, unpublished data). Start dates were observed to vary while base temperature exhibited little variation. An average number of 2.72 frost free days (ffd) were required for a 1 day change in the start day. The model was generalized using ffd and tested on data obtained from the literature. Results of application of the model on a real time basis were determined using start dates based on ffd and linearly interpolated temperature normals when actual daily temperature records were unobtainable. While several clusters had 2 eggs, they were seldom oviposited on the same nut. Oviposition occurred on the tip of the pistil and the calyx lobes only. Insufficient evidence was obtained to reject the null hypothesis that nut entry by the 1st summer generation pnc and physiological drop were independent. Nut entry occurred over ca. 1200 degree days at College Station, Texas in 1980 and 1981. The average number of nuts destroyed/cluster by the 1st summer generation pnc ranged from 1.72-2.55 and the average number of nuts undamaged/cluster ranged from 0.52-3.1. Significant differences in cluster size and nut position in relation to nut infestation were not obtained. The 1st summer generation pnc prefered to enter the proximal end of the nut adjacent to the peduncle. Overwintering generation male pnc moths emerged and were caught prior to females; however there was little difference due to sex. The observed sex ratio for overwintering generation pnc moths approximated a 1:1 ratio (males to females).
|
| 650 |
|
0 |
|a Beneficial insects.
|0 http://id.loc.gov/authorities/subjects/sh85013131
|
| 650 |
|
0 |
|a Insect pests.
|0 http://id.loc.gov/authorities/subjects/sh85066645
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| 650 |
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0 |
|a Insect pests
|x Control.
|0 http://id.loc.gov/authorities/subjects/sh85066647
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| 650 |
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0 |
|a Insects
|x Behavior
|x Mathematical models.
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| 650 |
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0 |
|a Pecan nut casebearer.
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| 650 |
|
4 |
|a Entomology.
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| 655 |
|
7 |
|a Academic theses.
|2 lcgft
|0 http://id.loc.gov/authorities/genreForms/gf2014026039
|
| 700 |
1 |
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|a Chui, C. K.,
|e degree supervisor.
|0 http://id.loc.gov/authorities/names/n83161032
|
| 700 |
1 |
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|a Gilstrap, F. E.,
|e degree committee member.
|
| 700 |
1 |
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|a Jackman, J. A.,
|e degree committee member.
|0 http://id.loc.gov/authorities/names/n89630320
|
| 700 |
1 |
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|a Lyda, S. D.,
|e degree committee member.
|
| 700 |
1 |
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|a Wehrly, T. E.,
|e degree committee member.
|
| 710 |
2 |
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|a Texas A & M University,
|e degree granting institution.
|0 http://id.loc.gov/authorities/names/n80125885
|
| 856 |
4 |
1 |
|u http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=749776721&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD
|z Link to ProQuest Copy
|t 0
|
| 856 |
4 |
1 |
|u https://hdl.handle.net/1969.1/DISSERTATIONS-94421
|z Link to OAKTrust copy
|t 0
|
| 994 |
|
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|a C0
|b TXA
|
| 999 |
f |
f |
|s 0169fc55-17e8-38d9-8f9e-dbe3fe519422
|i d9ca7640-965c-344d-9d49-ff010f7d012c
|t 0
|
| 952 |
f |
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|p noncirc
|a Texas A&M University
|b J.J. Pickle Campus
|c High Density Repository
|s HDR
|d Remote Storage
|t 0
|e 1981 Dissertation R581
|h Other scheme
|i unmediated -- volume
|m A14841003925
|
| 952 |
f |
f |
|a Texas A&M University
|b College Station
|c Electronic Resources
|s www_evans
|d Available Online
|t 0
|e 1981 Dissertation R581
|h Other scheme
|
| 998 |
f |
f |
|a 1981 Dissertation R581
|t 0
|l Available Online
|
| 998 |
f |
f |
|a 1981 Dissertation R581
|t 0
|l Remote Storage
|