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Journal articles on the topic 'Marsupial'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

SOUZA ROCHA, Katarine de, Gleiciane SCHUPP DE SENA MESQUITA, Maeli Fernanda SILVA FERREIRA, et al. "New records of Leptospira spp. in wild marsupials and a rodent in the eastern Brazilian Amazon through PCR detection." Acta Amazonica 50, no. 4 (2020): 305–8. http://dx.doi.org/10.1590/1809-4392201903683.

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ABSTRACT We analyzed the presence of Leptospira spp. in liver and kidney tissue of wild marsupials and rodents trapped in a periurban forest in the eastern Brazilian Amazon. We examined 25 individuals of four marsupial and seven rodent species for the presence of the 16S rRNA gene of Leptospira in the DNA extracted from 47 liver and kidney tissue samples using PCR. We detected positive samples in 12% (3/25) of the individuals, in kidney fragments of two marsupial species (Didelphis marsupialis and Marmosops pinheiroi) and in a liver fragment of one rodent species (Echimys chrysurus). These are

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2

J. Foley, William. "Marsupial Nutrition." Pacific Conservation Biology 5, no. 3 (1999): 240. http://dx.doi.org/10.1071/pc99240a.

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In the early 1980s advances in marsupial biology could no longer be encapsulated in a single volume such as Hugh Tyndale-Biscoe's "Life of Marsupials" and Cambridge University Press commissioned a series of monographs covering a range of different topics in marsupial biology. As it was, only three of that series were realized and among them was the ptedecessor to this book "Digestive Physiology and Nutrition of Marsupials" published in 1982. "Marsupial Nutrition" is a considerably expanded and comprehensive review of studies of nutrition and digestive physiology of Australasian and South Ameri

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3

Cifelli, Richard L., and Christian De Muizon. "Marsupial mammal from the Upper Cretaceous North Horn Formation, Central Utah." Journal of Paleontology 72, no. 3 (1998): 532–37. http://dx.doi.org/10.1017/s0022336000024306.

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Little is known of the non-dinosaurian fauna from the Cretaceous (Maastrichtian) part of the North Horn Formation, despite its biogeographic importance. Herein we describe a new marsupial mammal from the unit, founded on an exceptionally complete specimen of a juvenile individual, and present new information on the incisor region of early marsupials, based on comparison with complete specimens from the early Paleocene of Bolivia. Alphadon eatoni, new species, is the smallest Lancian species of the genus, and departs from a presumed marsupial morphotype in having the second lower incisor enlarg

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4

Denyer, Alice L., Sophie Regnault, and John R. Hutchinson. "Evolution of the patella and patelloid in marsupial mammals." PeerJ 8 (August 19, 2020): e9760. http://dx.doi.org/10.7717/peerj.9760.

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The musculoskeletal system of marsupial mammals has numerous unusual features beyond the pouch and epipubic bones. One example is the widespread absence or reduction (to a fibrous “patelloid”) of the patella (“kneecap”) sesamoid bone, but prior studies with coarse sampling indicated complex patterns of evolution of this absence or reduction. Here, we conducted an in-depth investigation into the form of the patella of extant marsupial species and used the assembled dataset to reconstruct the likely pattern of evolution of the marsupial patella. Critical assessment of the available literature wa

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5

Kirsch, John A. W., Mark S. Springer, and François-Joseph Lapointe. "DNA-hybridisation Studies of Marsupials and their Implications for Metatherian Classification." Australian Journal of Zoology 45, no. 3 (1997): 211. http://dx.doi.org/10.1071/zo96030.

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We review past DNA-hybridisation studies of marsupials and present a reanalysis of the data, utilising results from our and additional studies to formulate and rationalise a new classification of Marsupialia. In the reanalysis, 13 individual DNA-hybridisation matrices, many lacking some pairwise comparisons, were sutured in stages to provide the basis for generating a tree of 101 marsupials plus an outgroup eutherian; a fourteenth matrix provided data for a tree including eight additional eutherians and a monotreme. Validation was achieved by jackknifing on taxa for each matrix as well as on t

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6

Deakin, Janine E. "Marsupial X chromosome inactivation: past, present and future." Australian Journal of Zoology 61, no. 1 (2013): 13. http://dx.doi.org/10.1071/zo12113.

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Marsupial and eutherian mammals inactivate one X chromosome in female somatic cells in what is thought to be a means of compensating for the unbalanced X chromosome dosage between XX females and XY males. The hypothesis of X chromosome inactivation (XCI) was first published by Mary Lyon just over 50 years ago, with the discovery of XCI in marsupials occurring a decade later. However, we are still piecing together the evolutionary origins of this fascinating epigenetic mechanism. From the very first studies on marsupial X inactivation, it was apparent that, although there were some similarities

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7

Wright, Jonathan C., and Anne Yoshizawa. "Ionic Composition and Ion Provisioning in Marsupial Fluid of Terrestrial Isopods (Isopoda, Oniscidea)." Crustaceana 84, no. 11 (2011): 1307–24. http://dx.doi.org/10.1163/156854011x594803.

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AbstractThe marsupium of the primarily terrestrial isopod sub-order Oniscidea is modified from the basal marine design and represents one of the key evolutionary innovations enabling the invasion of land habitats. In the Ligiidae, the marsupial chamber is provisioned with water from the external environment via a capillary channel formed from the apposed 6th and 7th pereiopods. The other oniscidean families possess a 'closed' marsupium, isolated from the pleural water-conducting system and provisioned with water and ions by sternal cotyledons. How these different modes of fluid provisioning in

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8

Belov, Katherine, Robert D. Miller, Julie M. Old, and Lauren J. Young. "Marsupial immunology bounding ahead." Australian Journal of Zoology 61, no. 1 (2013): 24. http://dx.doi.org/10.1071/zo12111.

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Marsupial immune responses were previously touted as ‘primitive’ but we now know that the marsupial immune system is complex and on par with that of eutherian mammals. In this manuscript we review the field of marsupial immunology, focusing on basic anatomy, developmental immunology, immunogenetics and evolution. We concentrate on advances to our understanding of marsupial immune gene architecture, made possible by the recent sequencing of the opossum, tammar wallaby and Tasmanian devil genomes. Characterisation of immune gene sequences now paves the way for the development of immunological as

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9

Price, Gilbert J., Kyle J. Ferguson, Gregory E. Webb, et al. "Seasonal migration of marsupial megafauna in Pleistocene Sahul (Australia–New Guinea)." Proceedings of the Royal Society B: Biological Sciences 284, no. 1863 (2017): 20170785. http://dx.doi.org/10.1098/rspb.2017.0785.

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Seasonal two-way migration is an ecological phenomenon observed in a wide range of large-bodied placental mammals, but is conspicuously absent in all modern marsupials. Most extant marsupials are typically smaller in body size in comparison to their migratory placental cousins, possibly limiting their potential to undertake long-distance seasonal migrations. But what about earlier, now-extinct giant marsupial megafauna? Here we present new geochemical analyses which show that the largest of the extinct marsupial herbivores, the enormous wombat-like Diprotodon optatum , undertook seasonal, two-

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10

Cockburn, A. "Sex-Ratio Variation in Marsupials." Australian Journal of Zoology 37, no. 3 (1989): 467. http://dx.doi.org/10.1071/zo9890467.

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Many marsupials produce sex ratios biased towards male or female young. In several cases these changes are comfortably accommodated in the existing theory of sex allocation. Local resource competition and the Trivers-Willard hypothesis have been usefully applied to several data sets, and preliminary experimental work has supported the main tenets of theory. By contrast, several data sets lack explanation, and provide challenges to theoreticians. The high frequency of bias in marsupials does not result from data-dredging, as bias is usually reported in descriptive accounts of marsupial reproduc

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11

Sherwin, WB, and ND Murray. "Population and Conservation Genetics of Marsupials." Australian Journal of Zoology 37, no. 3 (1989): 161. http://dx.doi.org/10.1071/zo9890161.

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This article summarises current knowledge of marsupial population genetics, and discusses its relevance to the conservation of marsupial species. It has been suggested that there is much lower genetic variation within marsupial populations than in eutherian mammals. This trend is not evident in the electrophoretic data summarised here. However, genetic differentiation between populations, subspecies, and species of marsupials appears to be slightly lower than comparable values for eutherians. Genetic estimates of migration between populations are scarce at present, but show values that are com

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12

Pevsner, Spencer K., David M. Grossnickle, and Zhe-Xi Luo. "The functional diversity of marsupial limbs is influenced by both ecology and developmental constraint." Biological Journal of the Linnean Society 135, no. 3 (2022): 569–85. http://dx.doi.org/10.1093/biolinnean/blab168.

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Abstract Extant marsupials are less ecologically diverse than placentals, and this is reflected by placentals exhibiting a greater diversity of locomotor modes, including powered flight and fully aquatic swimming. One proposed explanation for this discrepancy is that the development of more disparate marsupial forelimbs is prevented by the neonate’s crawl to the pouch, which requires precocious forelimb development for climbing adaptations. To test predictions of this Developmental Constraint Hypothesis (DCH), we pursue a comparative morphometric study on osteological traits of mammalian limbs

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13

Deakin, Janine E., and Sally Potter. "Marsupial chromosomics: bridging the gap between genomes and chromosomes." Reproduction, Fertility and Development 31, no. 7 (2019): 1189. http://dx.doi.org/10.1071/rd18201.

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Marsupials have unique features that make them particularly interesting to study, and sequencing of marsupial genomes is helping to understand their evolution. A decade ago, it was a huge feat to sequence the first marsupial genome. Now, the advances in sequencing technology have made the sequencing of many more marsupial genomes possible. However, the DNA sequence is only one component of the structures it is packaged into: chromosomes. Knowing the arrangement of the DNA sequence on each chromosome is essential for a genome assembly to be used to its full potential. The importance of combinin

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14

Tojima, Sayaka, Hidaka Anetai, Kaito Koike, et al. "Gross anatomy of the gluteal and posterior thigh muscles in koalas based on their innervations." PLOS ONE 17, no. 9 (2022): e0261805. http://dx.doi.org/10.1371/journal.pone.0261805.

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Morphological and functional comparison of convergently-evolved traits in marsupials and eutherians is an important aspect of studying adaptive divergence in mammals. However, the anatomy of marsupials has been particularly difficult to evaluate for multiple reasons. First, previous studies on marsupial anatomy are often uniformly old and non-exhaustive. Second, muscle identification was historically based on muscle attachment sites, but attachment sites have since been declared insufficient for muscle identification due to extensive interspecific variation. For example, different names have b

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15

Kumar, Satish, Erica M. De Leon, Jose Granados, Deanne J. Whitworth, and John L. VandeBerg. "Monodelphis domestica Induced Pluripotent Stem Cells Reveal Metatherian Pluripotency Architecture." International Journal of Molecular Sciences 23, no. 20 (2022): 12623. http://dx.doi.org/10.3390/ijms232012623.

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Marsupials have been a powerful comparative model to understand mammalian biology. However, because of the unique characteristics of their embryology, marsupial pluripotency architecture remains to be fully understood, and nobody has succeeded in developing embryonic stem cells (ESCs) from any marsupial species. We have developed an integration-free iPSC reprogramming method and established validated iPSCs from two inbred strains of a marsupial, Monodelphis domestica. The monoiPSCs showed a significant (6181 DE-genes) and highly uniform (r2 [95% CI] = 0.973 ± 0.007) resetting of the cellular t

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16

Hayman, DL. "Marsupial Cytogenetics." Australian Journal of Zoology 37, no. 3 (1989): 331. http://dx.doi.org/10.1071/zo9890331.

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This review includes a list of the chromosome numbers of marsupials and a summary of the main features of chromosome evolution in this group of mammals. Special topics discussed include sex chromosome mosaicism, the size of the marsupial X chromosome, X chromosomes and nucleolar organisers, complex sex chromosome systems, repeated DNA sequences and aspects of meiosis.

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17

Tyndale-Biscoe, C. H. "Australasian marsupials - to cherish and to hold." Reproduction, Fertility and Development 13, no. 8 (2001): 477. http://dx.doi.org/10.1071/rd01079.

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Considerable interchange of mammals between South America and Australasia occurred during the first half of the Tertiary, including the presence of placental mammals in Australia. This challenges the old assumption that the marsupial radiation in Australia was made possible by the absence of placental competition, and suggests that two properties of marsupial organization may have favoured their survival in the increasingly arid climates that developed after the separation of Australasia from Antarctica. The basal metabolic rates of marsupials are about 70% of equivalent placentals, so their m

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18

McKenzie, LM, and DW Cooper. "Low MHC class II variability in a marsupial." Reproduction, Fertility and Development 6, no. 6 (1994): 721. http://dx.doi.org/10.1071/rd9940721.

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The major histocompatibility complex (MHC) loci have been shown to be highly polymorphic in most eutherian ('placental') species studied. Several hypotheses have been advanced for the maintenance of this exceptional level of genetic variation, one of which suggests that it is necessary for successful eutherian reproduction. Marsupials (metatherians) and eutherians are the only two groups of viviparous mammals, but their modes of reproduction are quite distinct. Although marsupials have placentae, they are generally shorter lived and less invasive than in eutherians. Other investigations have s

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19

Deakin, Janine E. "Marsupial Genome Sequences: Providing Insight into Evolution and Disease." Scientifica 2012 (2012): 1–22. http://dx.doi.org/10.6064/2012/543176.

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Marsupials (metatherians), with their position in vertebrate phylogeny and their unique biological features, have been studied for many years by a dedicated group of researchers, but it has only been since the sequencing of the first marsupial genome that their value has been more widely recognised. We now have genome sequences for three distantly related marsupial species (the grey short-tailed opossum, the tammar wallaby, and Tasmanian devil), with the promise of many more genomes to be sequenced in the near future, making this a particularly exciting time in marsupial genomics. The emergenc

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20

Churcher, C. S. "Dental functional morphology in the marsupial sabre-tooth Thylacosmilus atrox (Thylacosmilidae) compared to that of the felid sabre-tooths." Australian Mammalogy 8, no. 4 (1985): 201–20. http://dx.doi.org/10.1071/am85020.

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The South American Middle to Late Pliocene fauna of Argentina included the borhyaenid marsupials Thylacosmilus atrox and Notosmilus pattersoni, the latter known only from a single Late Pliocene occurrence. Thylacosmilus atrox has been interpreted as a marsupial with a carnivorous specialisation convergent on the fissipede and machairodont sabre-tooths of Eurasia, Africa and North America. Thylacosmilus atrox superficially resembles placental sabre-tooths in general conformation but also shows remarkable divergences, some of which are attributable to its marsupial ancestry.

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21

Kasai, Fumio, Patricia C. M. O'Brien, Jorge C. Pereira, and Malcolm A. Ferguson-Smith. "Marsupial chromosome DNA content and genome size assessed from flow karyotypes: invariable low autosomal GC content." Royal Society Open Science 5, no. 8 (2018): 171539. http://dx.doi.org/10.1098/rsos.171539.

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Extensive chromosome homologies revealed by cross-species chromosome painting between marsupials have suggested a high level of genome conservation during evolution. Surprisingly, it has been reported that marsupial genome sizes vary by more than 1.2 Gb between species. We have shown previously that individual chromosome sizes and GC content can be measured in flow karyotypes, and have applied this method to compare four marsupial species. Chromosome sizes and GC content were calculated for the grey short-tailed opossum (2 n = 18), tammar wallaby (2 n = 16), Tasmanian devil (2 n = 14) and fat-

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Ibeh, Neke, Charles Y. Feigin, Stephen R. Frankenberg, Davis J. McCarthy, Andrew J. Pask, and Irene Gallego Romero. "De novo transcriptome assembly and genome annotation of the fat-tailed dunnart (Sminthopsis crassicaudata)." Gigabyte 2024 (May 2, 2024): 1–16. http://dx.doi.org/10.46471/gigabyte.118.

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Marsupials exhibit distinctive modes of reproduction and early development that set them apart from their eutherian counterparts and render them invaluable for comparative studies. However, marsupial genomic resources still lag far behind those of eutherian mammals. We present a series of novel genomic resources for the fat-tailed dunnart (Sminthopsis crassicaudata), a mouse-like marsupial that, due to its ease of husbandry and ex-utero development, is emerging as a laboratory model. We constructed a highly representative multi-tissue de novo transcriptome assembly of dunnart RNA-seq reads spa

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Sánchez-Villagra, Marcelo R., Erik R. Seiffert, Thomas Martin, Elwyn L. Simons, Gregg F. Gunnell, and Yousry Attia. "Enigmatic new mammals from the late Eocene of Egypt." Paläontologische Zeitschrift 81, no. 4 (2007): 406–15. https://doi.org/10.5281/zenodo.13431404.

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(Uploaded by Plazi for the Bat Literature Project) A new mammalian genus and species from the earliest late Eocene of Egypt is represented by a lower jaw fragment and two isolated lower molars. A rare combination of features and the fragmentary nature of the materials make their taxonomic assignment to either Marsupialia or Chiroptera uncertain. The holotype of the new genus is the best-preserved specimen in the sample, a dentary fragment with two molars that have uncompressed trigonids, weak buccal cingulids, and a nyctalodont arrangement of the hypocristid. Some traits appear to more clearly

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Sánchez-Villagra, Marcelo R., Erik R. Seiffert, Thomas Martin, Elwyn L. Simons, Gregg F. Gunnell, and Yousry Attia. "Enigmatic new mammals from the late Eocene of Egypt." Paläontologische Zeitschrift 81, no. 4 (2007): 406–15. https://doi.org/10.5281/zenodo.13431404.

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(Uploaded by Plazi for the Bat Literature Project) A new mammalian genus and species from the earliest late Eocene of Egypt is represented by a lower jaw fragment and two isolated lower molars. A rare combination of features and the fragmentary nature of the materials make their taxonomic assignment to either Marsupialia or Chiroptera uncertain. The holotype of the new genus is the best-preserved specimen in the sample, a dentary fragment with two molars that have uncompressed trigonids, weak buccal cingulids, and a nyctalodont arrangement of the hypocristid. Some traits appear to more clearly

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Sánchez-Villagra, Marcelo R., Erik R. Seiffert, Thomas Martin, Elwyn L. Simons, Gregg F. Gunnell, and Yousry Attia. "Enigmatic new mammals from the late Eocene of Egypt." Paläontologische Zeitschrift 81, no. 4 (2007): 406–15. https://doi.org/10.5281/zenodo.13431404.

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(Uploaded by Plazi for the Bat Literature Project) A new mammalian genus and species from the earliest late Eocene of Egypt is represented by a lower jaw fragment and two isolated lower molars. A rare combination of features and the fragmentary nature of the materials make their taxonomic assignment to either Marsupialia or Chiroptera uncertain. The holotype of the new genus is the best-preserved specimen in the sample, a dentary fragment with two molars that have uncompressed trigonids, weak buccal cingulids, and a nyctalodont arrangement of the hypocristid. Some traits appear to more clearly

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26

Sánchez-Villagra, Marcelo R., Erik R. Seiffert, Thomas Martin, Elwyn L. Simons, Gregg F. Gunnell, and Yousry Attia. "Enigmatic new mammals from the late Eocene of Egypt." Paläontologische Zeitschrift 81, no. 4 (2007): 406–15. https://doi.org/10.5281/zenodo.13431404.

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(Uploaded by Plazi for the Bat Literature Project) A new mammalian genus and species from the earliest late Eocene of Egypt is represented by a lower jaw fragment and two isolated lower molars. A rare combination of features and the fragmentary nature of the materials make their taxonomic assignment to either Marsupialia or Chiroptera uncertain. The holotype of the new genus is the best-preserved specimen in the sample, a dentary fragment with two molars that have uncompressed trigonids, weak buccal cingulids, and a nyctalodont arrangement of the hypocristid. Some traits appear to more clearly

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27

Sánchez-Villagra, Marcelo R., Erik R. Seiffert, Thomas Martin, Elwyn L. Simons, Gregg F. Gunnell, and Yousry Attia. "Enigmatic new mammals from the late Eocene of Egypt." Paläontologische Zeitschrift 81, no. 4 (2007): 406–15. https://doi.org/10.5281/zenodo.13431404.

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(Uploaded by Plazi for the Bat Literature Project) A new mammalian genus and species from the earliest late Eocene of Egypt is represented by a lower jaw fragment and two isolated lower molars. A rare combination of features and the fragmentary nature of the materials make their taxonomic assignment to either Marsupialia or Chiroptera uncertain. The holotype of the new genus is the best-preserved specimen in the sample, a dentary fragment with two molars that have uncompressed trigonids, weak buccal cingulids, and a nyctalodont arrangement of the hypocristid. Some traits appear to more clearly

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28

Stannard, Hayley J., Robert D. Miller, and Julie M. Old. "Marsupial and monotreme milk—a review of its nutrient and immune properties." PeerJ 8 (June 23, 2020): e9335. http://dx.doi.org/10.7717/peerj.9335.

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All mammals are characterized by the ability of females to produce milk. Marsupial (metatherian) and monotreme (prototherian) young are born in a highly altricial state and rely on their mother’s milk for the first part of their life. Here we review the role and importance of milk in marsupial and monotreme development. Milk is the primary source of sustenance for young marsupials and monotremes and its composition varies at different stages of development. We applied nutritional geometry techniques to a limited number of species with values available to analyze changes in macronutrient compos

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Dörner, Marion, Markus Altmann, Svante Pääbo, and Mario Mörl. "Evidence for Import of a Lysyl-tRNA into Marsupial Mitochondria." Molecular Biology of the Cell 12, no. 9 (2001): 2688–98. http://dx.doi.org/10.1091/mbc.12.9.2688.

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The mitochondrial tRNA gene for lysine was analyzed in 11 different marsupial mammals. Whereas its location is conserved when compared with other vertebrate mitochondrial genomes, its primary sequence and inferred secondary structure are highly unusual and variable. For example, eight species lack the expected anticodon. Because the corresponding transcripts are not altered by any RNA-editing mechanism, the lysyl-tRNA gene seems to represent a mitochondrial pseudogene. Purification of marsupial mitochondria and in vitro aminoacylation of isolated tRNAs with lysine, followed by analysis of amin

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Moore, HD. "Gamete biology of the new world marsupial, the grey short-tailed opossum, Monodelphis domestica." Reproduction, Fertility and Development 8, no. 4 (1996): 605. http://dx.doi.org/10.1071/rd9960605.

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Mammalian gametes undergo a series of functional and developmental changes that culminate in fertilization. In order to appreciate the necessity for such complex processes as sperm maturation, capacitation and the intimate sperm-egg interactions leading to gamete fusion, it is important to understand how gametes may have evolved. In this respect, marsupials are particularly relevant since they exhibit features reminiscent of both non-mammalian vertebrates and eutherian mammals. The grey short-tailed opossum, Monodelphis domestica, is a New World marsupial from Brazil. It breeds well under labo

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Ralston, GB. "Proteins of Marsupial Erythrocyte Membranes." Australian Journal of Biological Sciences 38, no. 1 (1985): 121. http://dx.doi.org/10.1071/bi9850121.

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The proteins of erythrocyte membranes from the red kangaroo, western grey kangaroo, eastern grey wallaroo (euro), red-necked wallaby, Tammar wallaby, and brush-tail possum have been fractionated on acrylamide gels in the presence of sodium dodecyl sulfate. The pattern of proteins was remarkably similar between the different marsupial species. The pattern of Coomassie blue-staining proteins in the membranes of these species was also very similar to that of the human erythrocyte membrane. However, the glycoproteins in the marsupial erythrocyte membranes were markedly less conspicuous than those

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Westerman, M. "Phylogenetic-Relationships of the Marsupial Mole, Notoryctes-Typhlops (Marsupialia, Notoryctidae)." Australian Journal of Zoology 39, no. 5 (1991): 529. http://dx.doi.org/10.1071/zo9910529.

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The phylogenetic position of the marsupial mole, Notorcytes typhlops, has been difficult to ascertain with morphological characters because of its highly specialised fossorial lifestyle. On the basis of serological data, Kirsch (1977b) suggested that this species was sufficiently different from other marsupials to warrant placing it in its own suborder. Using the DNA-DNA hybridisation technique on single-copy DNA to assess sequence differences over the entire genome, I confirm that N. typhlops is not closely related to any other marsupial family, and warrants placement in its own order.

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Cope, Holly R., Clare McArthur, Rachael Gray, et al. "Trends in Rescue and Rehabilitation of Marsupials Surviving the Australian 2019–2020 Bushfires." Animals 14, no. 7 (2024): 1019. http://dx.doi.org/10.3390/ani14071019.

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The 2019–2020 Australian bushfire season had a devastating impact on native wildlife. It was estimated that 3 billion native animals were impacted by the fires, yet there are few estimates of the number of animals that were rescued and rehabilitated post-fire. Focusing on the state of New South Wales (NSW) and Kangaroo Island, South Australia, we used a case study approach to determine the number of marsupials that were reported rescued due to the 2019–2020 bushfires in these areas and analysed species-specific trends in rescue and release success. In NSW, we found 889 reports of fire-affected

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Renfree, Marilyn B. "Society for Reproductive Biology Founders' Lecture 2006 Life in the pouch: womb with a view." Reproduction, Fertility and Development 18, no. 7 (2006): 721. http://dx.doi.org/10.1071/rd06072.

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Marsupials give birth to an undeveloped altricial young after a relatively short gestation period, but have a long and sophisticated lactation with the young usually developing in a pouch. Their viviparous mode of reproduction trades placentation for lactation, exchanging the umbilical cord for the teat. The special adaptations that marsupials have developed provide us with unique insights into the evolution of all mammalian reproduction. Marsupials hold many mammalian reproductive ‘records’, for example they have the shortest known gestation but the longest embryonic diapause, the smallest ne

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Griffiths, M., and N. G. Simms. "Observations on the anatomy of mammary glands in two species of conilurine rodent (Muridae: Hydromyinae) and in an opossum (Marsupialia: Didelphidae)." Australian Mammalogy 16, no. 1 (1993): 9. http://dx.doi.org/10.1071/am93002.

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The pups of Pseudomys nanus and P. australis are attached to their mothers&apos; teats for extended periods of time, analogous to the situation encountered in pouchless marsupials. The structures in the mammary glands involved in facilitating prolonged attachment are different in the two rodent species and both kinds are different from those in marsupial glands including those of Monodelphis domestica, the subject of the present study. In P. nanus, the teats are anchored to postero-ventrally directed, tubular diverticula of the body wall. In P. australis there are no diverticula. However,

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Withers, P. C., G. G. Thompson, and R. S. Seymour. "Metabolic physiology of the north-western marsupial mole, Notoryctes caurinus (Marsupialia : Notoryctidae)." Australian Journal of Zoology 48, no. 3 (2000): 241. http://dx.doi.org/10.1071/zo99073.

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We studied the thermal and metabolic physiology of a single specimen of the north-western marsupial mole, Notoryctes caurinus, an almost completely fossorial Australian marsupial, and compared it with the morphologically convergent Namib desert golden mole, Eremitalpa granti namibensis. This was the first study of any aspect of the physiology of this rare marsupial. Mean body mass of the marsupial mole was 34 g. Body temperature (Tb) was low and labile, ranging from 22.7 to 30.8˚C over a range of ambient temperature (Ta) from 15 to 30˚C. The highest Tb of 30.8˚C was significantly lower than ex

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Green, Brian, Jim Merchant, and Keith Newgrain. "Milk Composition in the Eastern Quoll, Dasyurus viverrinus (Marsupialia : Dasyuridae)." Australian Journal of Biological Sciences 40, no. 4 (1987): 379. http://dx.doi.org/10.1071/bi9870379.

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The milk constituents of Dasyurus viverrinus, a carnivorous marsupial, exhibited major quantitative and qualitative changes during the course of lactation. The milk produced in the early stages of lactation was dilute, about 13-16070 (w/w) solids before 3 weeks with carbohydrate representing the major fraction. In the latter stages of lactation the milk was concentrated, around 30% solids, and lipid was the predominant fraction. Palmitic acid was the major fatty acid present in early-stage milk but oleic acid became predominant in milk after 10 weeks post-partum. The changes in milk compositio

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Koenigswald von, Wighart, and Francisco Goin. "Enamel differentiation in South American marsupials and a comparison of placental and marsupial enamel." Palaeontographica Abteilung A 255, no. 4-6 (2000): 129–68. http://dx.doi.org/10.1127/pala/255/2000/129.

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Rodger, JC. "Prefertilization gamete maturation events in marsupials." Reproduction, Fertility and Development 6, no. 4 (1994): 473. http://dx.doi.org/10.1071/rd9940473.

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Despite many fundamental similarities between the gametes of marsupials and placental mammals, the regulation and timing of prefertilization gamete maturation are quite different. The marsupial acrosome is remarkably stable and an acrosome reaction (AR) is not induced by reagent effective for the sperm of placental mammals. The ultrastructure of the marsupial sperm AR is essentially similar to that of placental mammals, however, whether an equatorial segment (ES) persists to serve as the site of sperm-egg membrane fusion is unclear. Diacylglycerol induction of the AR suggests that the sperm of

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Lapointe, FJ, and JAW Kirsch. "Construction And Verification Of A Large Phylogeny Of Marsupials." Australian Mammalogy 23, no. 1 (2001): 9. http://dx.doi.org/10.1071/am01009.

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Much of the controversy over marsupial phylogeny at higher-categorical levels stems from the piecemeal nature of the contributing studies or the paucity of taxonomic representation in many of them. Yet the problems of constructing large phylogenies are manyfold, involving the initial generation of the data as well as their efficient analysis. Often unaddressed, also, is the need to validate extremely large data sets and trees. Many of these problems can be ameliorated by treating the data as distances (or generating distances directly). We show that, contrary to the assertions of many protagon

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Renfree, MB. "Monotreme and marsupial reproduction." Reproduction, Fertility and Development 7, no. 5 (1995): 1003. http://dx.doi.org/10.1071/rd9951003.

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Marsupials were regarded as curiosities by their early European discoverers, animals to be wondered at. Monotremes were even more surprising; the platypus was such an amalgam of characters that it was thought to be a hoax. They were recognized very early as mammals that could make a major contribution to our understanding of reproductive processes, and work on marsupials at the turn of the century was much in evidence. It is, however, only in the past two decades, and especially in the past few years that marsupial research has regained this position. There is no doubt that future research wil

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Fidler, Andrew E., Andrea H. Western, Nicole Griffith, Lynne Selwood, Vicki Stent, and Kenneth P. McNatty. "Production of a biologically active recombinant marsupial growth factor using the methylotrophic yeast Pichia pastoris." Reproduction, Fertility and Development 14, no. 6 (2002): 327. http://dx.doi.org/10.1071/rd02040.

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The cytokine stem cell factor (SCF) and its interaction with its receptor c-kit plays an important role in the development of germ cells in eutherians. To investigate the putative roles of the SCF/c-kit system in marsupials, recombinant Australian brushtail possum (Trichosurus vulpecula) SCF was purified after secretion by the methylotrophic yeast Pichia pastoris. The purification procedure utilized Ni2+ affinity chromatography with a poly-histidine tag engineered onto the C-terminus of the recombinant SCF. The recombinant possum SCF had a molecular weight of 48 kDa, as determined by sodium do

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Mate, KE. "Cytoplasmic maturation of the marsupial oocyte during the periovulatory period." Reproduction, Fertility and Development 8, no. 4 (1996): 509. http://dx.doi.org/10.1071/rd9960509.

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During the period immediately before ovulation, the oocytes of most eutherian and marsupial mammals complete the first meiotic maturation division and extrude the first polar body. In marsupials, this phase of nuclear maturation is accompanied by an increase in size of the egg and maturation of cytoplasmic components. Oocytes from at least four marsupial species, Trichosurus vulpecula, Macropus eugenii, Bettongia penicillata and Monodelphis domestica, continue to grow after formation of the follicular antrum and, although the rate of growth slows in larger follicles, it continues into the peri

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Taggart, D. A., D. Schultz, and P. D. Temple-Smith. "Development and Application of Assisted Reproductive Technologies in Marsupials: Their Value for Conservation of Rock-wallabies." Australian Mammalogy 19, no. 2 (1996): 183. http://dx.doi.org/10.1071/am97183.

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Assisted reproductive technology is used routinely in management to treat infertility and in domestic species in basic husbandry. In eutherian mammals application of this technology is also well established in wildlife conservation programs. The development and application of this technology in marsupials, however, is a relatively new field. The reproductive techniques currently available for marsupial studies, their benefits and implications for conservation are discussed in order to remove any previous misconceptions and provide an insight into how these techniques might be applied. The pote

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Marcondes, Carlos Brisola, João Carlos Pinto Dias, Leonardo A. Guedes, Antenor N. Ferraz Filho, Vera L. C. C. Rodrigues, and Delosmar D. Mendonça. "Estudo epidemiológico de fontes de alimentação sangüínea dos triatomíneos da fazenda aroeira (Catolé do Rocha, Paraíba) e circunvizinhanças." Revista da Sociedade Brasileira de Medicina Tropical 24, no. 3 (1991): 137–40. http://dx.doi.org/10.1590/s0037-86821991000300002.

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Analisamos a fonte de alimentação sangüínea de 94 triatomíneos (51 Triatoma brasiliensis, 42 T. pseudomaculata e um Rhodnius neglectus) da Fazenda Aroeira, no Município de Catolé do Rocha, no Estado da Paraíba, e de quatro localidades próximas. Observamos positividade para marsupial, homem e ave, respectivamente, de 39,7 , 6,2 e 23,0%. Três insetos da Fazenda Aroeira, positivos para Trypanosoma cruzi, foram positivos para marsupial, só um deles também para outro mamífero. Os marsupiais são a mais importante fonte de T. cruzi para os insetos da área e estes têm pouco contato com o homem.

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Soderquist, TR, and CR Dickman. "A Technique for Marking Marsupial Pouch Young With Fluorescent Pigment Tattoos." Wildlife Research 15, no. 5 (1988): 561. http://dx.doi.org/10.1071/wr9880561.

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Small quantities of fluorescent pigments were tattooed into the pinnae of pouch young Dasyurus geoffroii and Isoodon obesulus (Marsupialia), and into the pinnae of 5-day-old Mus rnusculus (Rodentia). The tattoos contrasted sharply with natural skin pigmentation when scanned with a UV light. Of 11 pigments tested, Flare 610 pigments were the most persistent, remaining visible for a minimum of 6 months. The technique facilitates rapid, cheap and reliable marking of marsupial pouch young, and should be generally applicable for determining filial relationships in a wide range of marsupial species.

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Jolly, SE, GA Morriss, S. Scobie, and PE Cowan. "Composition of Milk of the Common Brushtail Possum, Trichosurus Vulpecula (Marsupialia: Phalangeridae): Concentrations of Elements." Australian Journal of Zoology 44, no. 5 (1996): 479. http://dx.doi.org/10.1071/zo9960479.

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The concentrations of 11 elements (calcium, copper, iron, magnesium, manganese, phosphorus, potassium, sodium, strontium, sulphur and zinc) were measured in milk samples collected from 193 lactating brushtail possums, Trichosurus vulpecula, at all stages of lactation. Most elements showed patterns of change during lactation similar to those of other marsupials. The most marked changes occurred at about 80-120 days, when the growth rate of the pouch young increased and developmental changes took place, such as eye opening and fur growth. Compared with eutherians, copper and iron concentrations

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Hughes, R. Leon. "Structure of the female reproductive tract of an adult parous Tasmanian tiger, Thylacinus cynocephalus." Australian Journal of Zoology 48, no. 5 (2000): 487. http://dx.doi.org/10.1071/zo00022.

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The present observations on the now-extinct Thylacinus are based on the reproductive system of an adult thylacine discovered among the specimens of the Hill collection at the Hubrecht Laboratory in the Netherlands. As in other marsupials, the reproductive tract was characterised by the presence of a uterus duplex and a vaginal complex where the ureters passed dorsally over each lateral vaginal canal to enter the bladder. The lateral vaginal canals each entered a urogenital sinus that terminated in a shallow cloaca. The gross dimensions of the reproductive tract of the thylacine were greater th

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Cowan, PE. "Changes in milk composition during lactation in the common brushtail possum, Trichosurus vulpecula (Marsupialia: Phalangeridae)." Reproduction, Fertility and Development 1, no. 4 (1989): 325. http://dx.doi.org/10.1071/rd9890325.

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The milk constituents of Trichosurus vulpecula, a folivorous marsupial, showed marked quantitative and qualitative changes during the course of lactation. The milk produced in the early stages of lactation was dilute, with about 9-13% (w/w) solids during the first 3 weeks, comprising mostly carbohydrate and protein (35-40%). At 20 weeks, about three-quarters of the way through lactation, the milk was much more concentrated, about 28% solids, with lipid the predominant fraction (30-35%), after a marked decline in carbohydrate content (20-25%). Concentrations of the electrolytes sodium and potas

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Katsura, Yukako, Shuji Shigenobu, and Yoko Satta. "Adaptive Evolution and Functional Differentiation of Testis-Expressed Genes in Theria." Animals 14, no. 16 (2024): 2316. http://dx.doi.org/10.3390/ani14162316.

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Gene expression patterns differ in different tissues, and the expression pattern of genes in the mammalian testis is known to be extremely variable in different species. To clarify how the testis transcriptomic pattern has evolved in particular species, we examined the evolution of the adult testis transcriptome in Theria using 10 species: two marsupials (opossum and Tasmanian devil), six eutherian (placental) mammals (human, chimpanzee, bonobo, gorilla, rhesus macaque, and mouse), and two outgroup species (platypus and chicken). We show that 22 testis-expressed genes are marsupial-specific, s

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