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Alfred Gardner

Publications and source records attributed to Alfred Gardner.

5 recordsLinked to original sources
USGS2017

Taxonomic reassessment of bats from Castelnau’s expedition to South America (1843–1847): Phyllostoma angusticeps Gervais, 1856 (Chiroptera, Phyllostomidae)

Gervais, in 1856, described the bats collected during Castelnau’s expedition through South America (1843–1847). We report that Phyllostoma angusticeps (Gervais, 1856), long treated as a junior synonym of Phyllostomus discolor (Wagner, 1843), is not a representative of the genus Phyllostomus . In fact, as we demonstrate, it represents the taxon known as Trachops cirrhosus . We also provide a summary, in tabular form, of the genera and species first described by Gervais (1856).

Mammalia↗
USGS2016

A new species of Myotis (Chiroptera: Vespertilionidae) from Suriname

We describe a new species of bat in the genus Myotis (Vespertilionidae: Myotinae) from the district of Sipaliwini, Suriname. The new species ( Myotis clydejonesi sp. nov.), known from a single specimen, is sister to a clade of M. nigricans (Schinz) from southern South America, but differs from all Neotropical species of Myotis in qualitative and quantitative morphological characters and in its cytochrome- b gene sequence. Our findings also indicate that M. nigricans remains composite and provide support for restricting M. nigricans (sensu stricto) to southern South America.

Raleigh Falls↗
USGS2008

The chromosomes of the Didelphidae (Marsupialia) and their evolutionary significance

One hundred and seventy-seven specimens of American didelphids, representing 9 genera and 22 species have been studied for their chromosomal constitution. Didelphids are very conservative in chromosomal complements. All of the studied species can be sorted into one of three kinds of karyotypes: 2 n = 14 (three species of Didelphis, one of Lutreolina, two of Philander, and one of Chironectes) , 2 n = 14 (eight species of Marmosa, one of Metachirus, three of Caluromys, and one of Dromiciops), and 2 n = 18 (three species of Monodelphis). These karyotypes are stable, showing only minor variations within each basic pattern. It is concluded that chromosomals evolution in the Didelphidae proceededs from low numbers to higher numbers by a process of centromeric fissioning complemented by some pericentric inversions and/or translocations. The pattern of karyotypic stability is consistent with bradytely at the organismic level of evolution. This is explained by a low rate of regulatory genetic evolution promoted by epistatic selection favouring the retention of chromosomal arrangements highly advantageous for overall adaptation.

Biological Journal of the Linnean Society↗
USGS1974

Karyotypic analyses of twenty-one species of molossid bats (Molossidae: Chiroptera)

Examination of 135 specimens representing 21 species from seven genera of the family Molossidae revealed diploid numbers ranging from 34 to 48. Seventeen species from six genera have diploid numbers of 48. Geographic variation and polymorphism were found only in Eumops glaucinus . Chromosomal variation within the family is presumed to be primarily due to changes in diploid number resulting from Robertsonian translocations.

Canadian Journal of Genetics and Cytology↗