The "reindeer" mutation and a revision of linkage groups V and X in the flour beetle, Tribolium castaneum

1984 ◽  
Vol 26 (6) ◽  
pp. 762-764 ◽  
Author(s):  
Peter S. Dawson
Keyword(s):  
Linkage Group ◽  
Key Words ◽  
Tribolium Castaneum ◽  
Linkage Groups ◽  
Dominant Mutation ◽  
Genetic Studies ◽  
Group V ◽  
Flour Beetle ◽  
Dominant Mutants

Reindeer (Rd) is a dominant mutation affecting antenna morphology in the tenebrionid flour beetle, Tribolium castaneum. In contrast with most dominant mutants previously described for this species, homozygotes are fully viable, thus making Rd very useful for genetic studies. Rd is tentatively assigned to either linkage group IX or X. Abbreviated appendages (aa), formerly placed in linkage group X, is reassigned to linkage group V on the basis of demonstrated linkage to jet (j).Key words: Tribolium, mutation Rd, linkage, antenna morphology.

scholarly journals Genetic studies on flagellum mutants of Chlamydomonas reinhardii

1972 ◽  
Vol 19 (2) ◽  
pp. 157-164 ◽  
Author(s):  
Anne McVittie
Keyword(s):  
Linkage Group ◽  
Wild Type ◽  
Linkage Groups ◽  
Genetic Studies ◽  
Chlamydomonas Reinhardii ◽  
The Third ◽  
Group Ii

SUMMARYEight newly isolated 9 + 0 mutants each mapped at one of the four previously known loci. Short flagellum mutants were at three loci, two of which (pf7 and pf8) were closely linked; the third, pf21, was unlinked to these two and mapped on linkage group II. The long flagellum mutants lf1 and lf2 were on linkage groups II and XII respectively. Mutants pf8A and lf1 were both recessive to wild-type. There was no evidence for non-Mendelian flagellum mutants.

Linkage of the reindeer and alate prothorax loci and sex differences in recombination frequency in linkage group IX of Tribolium castaneum

1985 ◽  
Vol 27 (3) ◽  
pp. 276-278
Author(s):  
Peter S. Dawson ◽  
Kelly L. Berends
Keyword(s):  
Sex Differences ◽  
Linkage Group ◽  
Tribolium Castaneum ◽  
Autosomal Dominant ◽  
Recombination Frequency ◽  
Flour Beetle ◽  
The Third ◽  
Dominant Mutant

Reindeer (Rd), an autosomal dominant mutant in the flour beetle, Tribolium castaneum, is located in linkage group IX. Recombination between Rd and alate prothorax occurs more frequently in males than in females. Linkage group IX appears to be the third linkage group for which recombination frequency is greater in males for one region and in females for another region of the chromosome.Key words: Tribolium, linkage.

scholarly journals Toxicity and Repellant Activity of Three Spice Materials on Tribolium castaneum (Herbst) Adults

1970 ◽  
Vol 14 ◽  
pp. 131-134 ◽  
Author(s):  
K Farhana ◽  
H Islam ◽  
EH Emran ◽  
N Islam
Keyword(s):  
Biological Activity ◽  
Key Words ◽  
Tribolium Castaneum ◽  
Coriandrum Sativum ◽  
Red Flour Beetle ◽  
Repellent Activity ◽  
Flour Beetle ◽  
Trachyspermum Ammi ◽  
Residual Film

The chloroform extracts of coriander (Coriandrum sativum L.), ajowain (Trachyspermum ammi (L.) Link.) and fenugreek (Trigonella foenum-grecum L.) were tested against the red flour beetle, Tribolium castaneum (Hbst.) adults through residual film assay and their repellent activity were also conducted. The LD50 values for coriander, ajowain and fenugreek were 316.173 and 243.5895, 271.4573 and 232.7095, and 159.0106 and 4.194236 ?g/cm2 for 24- and 48 h of exposure respectively. According to the intensity of activity the toxicity were found in the order of fenugreek> ajowain >coriander, while the repellent activities were in the order of fenugreek> coriander> ajowain. Key words: Coriandrum sativum, Trachyspermum ammi, Trigonella foenum-grecum biological activity, Tribolium castaneum. J. bio-sci. 14: 127-130, 2006

LINKAGE GROUP IV OF TRIBOLIUM CASTANEUM

1972 ◽  
Vol 14 (3) ◽  
pp. 675-680 ◽  
Author(s):  
Peter S. Dawson
Keyword(s):  
Linkage Group ◽  
Tribolium Castaneum ◽  
Group Iv ◽  
Eye Color ◽  
Flour Beetle ◽  
Color Mutant ◽  
White Locus ◽  
Fourth Pair

A new recessive eye color mutant, hazel, of the flour beetle, Tribolium castaneum, has been mapped in linkage group IV near the white locus, thus establishing the existence of a fourth pair of closely linked eye color genes in this species. A revision of linkage group IV is proposed.

scholarly journals DUPLICATIONS IN CAENORHABDITIS ELEGANS

Genetics ◽  
1979 ◽  
Vol 92 (2) ◽  
pp. 419-435
Author(s):  
Robert K Herman ◽  
James E Madl ◽  
Claire K Kari
Keyword(s):  
Caenorhabditis Elegans ◽  
Linkage Group ◽  
X Chromosome ◽  
Linkage Groups ◽  
Group V ◽  
Chromosome Map ◽  
Mitotic Instability ◽  
X Irradiation ◽  
Group Ii ◽  
Map Data

ABSTRACT Thirteen chromosomal duplications, all unlinked to their linkage group of origin, have been identified following X-irradiation. Ten are X-chromosome duplications, of which six are half-translocations on three autosomomal linkage groups and four are free fragments. Five of the half-translocations are homozygous fertile and two are recognizable cytologically as chromosome satellites, both of which show some mitotic instability. The free-X duplications show varying tendencies for loss. Three appear not to overlap in extent previously identified free-X duplications. The fourth carries genes from linkage group V, as well as X. Three duplications of a portion of linkage group II were identified and found to be free and quite stable in hyperploids. Some of the free duplications tend to disjoin from the X chromosome in males. New X-chromosome map data are presented.

Effects of gamma radiation on the reproductive organs in the red flour beetle Tribolium castaneum (Herbst)

1970 ◽  
Vol 25 ◽  
pp. 11-14 ◽  
Author(s):  
PA Banu ◽  
IA Ali ◽  
MA Salam
Keyword(s):  
Gamma Radiation ◽  
Key Words ◽  
Tribolium Castaneum ◽  
Radiation Effects ◽  
Reproductive Organs ◽  
Red Flour Beetle ◽  
Pest Species ◽  
Sterile Male ◽  
Flour Beetle ◽  
Storage Pest

Gamma radiation effects on the gonads of Tribolium castaneum were assessed by cytological techniques. Pupal treatments of 15 Gy resulted in the significant reduction of testes and ovaries leading to sterility in males and infecundity in females, respectively. The present findings thus provide an important information for designing a sterile male technique for this storage pest species. Key words: Gamma radiation, Tribolium castaneum, reproductive organs Univ. j. zool. Rajshahi Univ. Vol.25 2006 p.11-14

scholarly journals α-HYDROXYACID OXIDASE GENETICS IN THE MOUSE: EVIDENCE FOR TWO GENETIC LOCI AND A TETRAMERIC SUBUNIT STRUCTURE FOR THE LIVER ISOZYME

Genetics ◽  
1974 ◽  
Vol 76 (1) ◽  
pp. 93-97
Author(s):  
John Duley ◽  
Roger S Holmes
Keyword(s):  
Linkage Group ◽  
Mus Musculus ◽  
Genetic Locus ◽  
Inbred Strains ◽  
Subunit Structure ◽  
Autosomal Locus ◽  
Genetic Studies ◽  
Group V ◽  
F1 Hybrid ◽  
Hybrid Mice

ABSTRACT We have examined a polymorphism for liver GOX in inbred strains of the mouse Mus musculus. Genetic studies demonstrated that the two phenotypes for this enzyme present in BALB/C and NZC parental strains segregated as though they were controlled by codominant alleles at a single autosomal locus (GOX) which mapped closely to the agouti locus in linkage group V. Kidney HAOX activity is invariant in these inbred strains and is encoded by a separate genetic locus designated HAOX. BALB/C × NZC F1 hybrid mice exhibited three intermediate forms of liver GOX activity, in addition to the parental enzymes, which is consistent with a tetrameric subunit structure.

scholarly journals THE GENETICS OF A PROBABLE INSERTIONAL TRANSLOCATION IN SORDARIA BREVICOLLIS

Genetics ◽  
1979 ◽  
Vol 92 (1) ◽  
pp. 75-82
Author(s):  
D J Bond
Keyword(s):  
Linkage Group ◽  
Chromosome Rearrangement ◽  
Linkage Groups ◽  
Group Vi ◽  
Group V ◽  
Insertional Translocation

ABSTRACT A chromosome rearrangement has been isolated and characterized in Sorduria brevicollis. Crosses to spore color mutants on each of the seven linkage groups have enabled the breakpoints to be mapped. The simplest hypothesis to account for the results is that a piece of linkage group VI has been trans-located to linkage group V and inserted 2.7 map units from its centromere. Previous reports of markers on this linkage group with centromere distances greater than 2.7 units make it unlikely that the translocation is quasiterminal.

Cytogenetics of chromosome rearrangements in Tribolium castaneum

Genome ◽  
1995 ◽  
Vol 38 (4) ◽  
pp. 673-680 ◽  
Author(s):  
Jeffrey J. Stuart ◽  
Giovani Mocelin
Keyword(s):  
Tribolium Castaneum ◽  
Relative Length ◽  
Red Flour Beetle ◽  
Linkage Groups ◽  
Mitotic Chromosomes ◽  
Autosomal Bivalents ◽  
Flour Beetle ◽  
Spermatogonial Metaphase ◽  
Restriction Enzyme Banding ◽  
Metaphase I

The karyotype of the red flour beetle, Tribolium castaneum, was reexamined and improved by restriction enzyme banding with HpaII. After this treatment, each of the 10 chromosomes were identified in spermatogonial metaphase cells and 3 of the 8 autosomal bivalents and the XY pair were identified in spermatocyte metaphase I nuclei. Based on centromere position, relative length, and banding pattern, probable correlations between some of the mitotic chromosomes and some of the metaphase I bivalents were ascertained. Thus improved, the karyotypes of beetles harboring genetically defined translocations were investigated. Spermatocyte metaphase I nuclei were most informative, as normal chromosome pairing was visibly disrupted by rearrangements. Bivalents associated with each rearrangement were identified. Results demonstrated that each of the five best defined T. castaneum linkage groups corresponds to a different chromosome and established correspondence between bivalents and linkage groups 1–4. The relevance of these findings is discussed with regard to Tribolium genetics and evolution.Key words: beetles, red flour beetle, Coleoptera, linkage groups, chromosome banding.

scholarly journals Efficacy of commercial neem-based insecticide, Nimbicidine® against eggs of the red flour beetle Tribolium castaneum (Herbst)

1970 ◽  
Vol 25 ◽  
pp. 51-55 ◽  
Author(s):  
Dipali Rani Das ◽  
Selina Parween ◽  
Saiful Islam Faruki
Keyword(s):  
Sex Ratio ◽  
Key Words ◽  
Tribolium Castaneum ◽  
Growth And Development ◽  
Adult Emergence ◽  
Developmental Period ◽  
Red Flour Beetle ◽  
Next Generation ◽  
Flour Beetle ◽  
Latent Effects

The efficacy of different concentrations of the commercial neem-based insecticide, Nimbicidine® was evaluated against the eggs of the red flour beetle Tribolium castaneum (Herbst). The insecticide significantly inhibited the hatching, pupation and adult emergence of the beetle. The latent effects of Nimbicidine® on the next generation progenies were expressed by significant reductions in the growth of larvae, pupation and adult emergence coupled with lengthened developmental period, but the sex ratio was unaffected. Key words: Tribolium castaneum, Azadirachtin, hatching, pupation, adult emergence, growth and development, sex ratio Univ. j. zool. Rajshahi Univ. Vol.25 2006 p.51-55

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