- School of BioSciences - Research Publications
School of BioSciences - Research Publications
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ItemReview of the genus Chironomus (Diptera: Chironomidae). VI. Cytology of the Chironomus maturus complex.Wuelker, W ; Martin, J (Natural Sciences Research Institute, Eastern New Mexico University, 1974)Two species, Chironomus maturus Johannsen and Chiron- omus whitsell Sublette and Sublette, having the chromosome arm combination AF, BE, CD, and G, are described. An evolutionary relationship to an ancestral group of the thummi- and pseudothummi- complexes as well as the parathummi-complex is postulated.
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ItemYama tahitiensis n.gen., n.sp. from Tahiti (Diptera: Chironomidae).Sublette, JE ; Martin, J (California Academy of Sciences, 1980)Describes the morphology of the adult male and female, pupa, larva and polytene chromosomes of a new species and genus of chironomid from Tahiti
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ItemNo Preview AvailableOn the Origin of Inversion PolymorphismMartin, J (University of Chicago Press, 1969-05)
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ItemNo Preview AvailableA review of the genus Chironomus (Diptera: Chironomidae). II. Added descriptions of Chironomus cloacalis Atchley and Martin from Australia.MARTIN, J (Natural Sciences Research Institute, University of Eastern New Mexico, 1971)
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ItemNo Preview AvailableBiometrical effects of the inversion polymorphism of Kiefferulus intertinctus (Skuse)Martin, J (CSIRO, 1973-01-01)The Lonsdale, Barwon, and Corio inversions of K. intertinctus produce biometrical effects in larvae. The Lo, Ba, and Co sequences all increase the length of the ventral tubules in both male and female larvae. This effect may help in understanding the basis of the non-random association between the Lonsdale and Barwon inversions. La and Ba, whose occurrence together is advantageous, are more common in warmer regions where the oxygen content of the water is low. Larger ventral tubules provide an increased area for respiratory exchange. In addition, the inversions probably also affect larval length. The Lo, Ba, and Stco sequences apparently decrease the length of female larvae but increase the length of male larvae. © 1973 ASEG.
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ItemNo Preview AvailableChromosomes as tools in taxonomy and phylogeny of Chironomidae (Diptera).MARTIN, J (Societas Entomologica Scandinavica,, 1979)
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ItemA review of the genus Chironomus (Diptera, Chironomidae) IX. The cytology of Chironomus tepperi SkuseMARTIN, J (Springer, 1974-03)Analysis of the banding pattern of the salivary gland chromosomes of Chironomus tepperi indicates that, despite a somewhat modified male hypopygium, the relationships of this species are close to the other Australian species of the genus, particularly to Ch. oppositus. No inversion polymorphism has been found in Ch. tepperi and this, together with the relatively high chiasma frequency as measured at metaphase I, would appear to be an adaptation to provide genetic variability necessary for its colonizing ability.
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ItemThe chromosomal location of the malate dehydrogenase and the phosphoglucomutase loci in Chironomus and their relationship with a sex determining region.MARTIN, J ; Lee, BTO (Council of Scientific Research Integration, 1988)
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ItemINVERSION POLYMORPHISM INCHIRONOMUS STAEGERILUNDBECKMartin, J ; Wülker, W (Canadian Science Publishing, 1971-06-01)Populations of Chironomus staegeri are polymorphic for inversions in six chromosome arms. Many of these inversions do not conform to Hardy-Weinberg expectation, often with a significant deficiency of heterozygotes. Many combinations of the inversions two-at-a-time show a significant deviation from random assortment. Often this is due to the occurrence together in the same individual of rare sequences, but others, such as the association of sequences A1and C1, A2and C2, and A2and B4appear to be real effects.There is a marked dimorphism in the inversion sequences present in populations from deep water and those from shallow water in the northeastern U.S.A. and Canada. This may be associated with ability to withstand winter freezing.It is possible that a process of speciation, leading eventually to three different species, is in progress and a considerable degree of reproductive isolation may have already been achieved.
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ItemA morphometric analysis of differential sexual dimorphism in larvae of Chironomus (Diptera)Atchley, WR ; Martin, J (Entomological Society of Canada, 1971-01-01)