Annals and Magazine of Natural History

1933

DOI: 10.1080/00222933308673658

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XXXV.—On the taxonomic value of the subgenus Lophomops (Nyctinomine bats), with remarks on the breeding times of African Bats

F. W. Braestrup¹

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Cited by 11 publications

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“…Both Antrozous and Lasiurus have hairs that are all the same length on the forehead. Braestrup (1933) stated that the tuft of hairs associated with the gland on the forehead is present and developed only in adult males during the mating period. However, we examined specimens of C. chapini taken throughout the year and all males, regardless of the time of year, showed a developed gland.…”

Section: Appendixmentioning

confidence: 99%

Phylogeny of Molossidae Gervais (Mammalia: Chiroptera) inferred by morphological data

¹

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²

2015

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Molossidae is a large (roughly 100 species) pantropically distributed clade of swift aerially insectivorous bats for which the phylogeny remains relatively unknown and little studied compared with other speciose groups of bats. We investigated phylogenetic relationships among 62 species, representing all extant molossid genera and most of the subgenera, using 102 morphological characters from the skull, dentition, postcrania, external morphology, tongue, and penis, based on direct observation and literature reports. Both parsimony and Bayesian analyses were used in phylogenetic reconstruction. Our analysis supports two main clades of molossids, both of which mingle Old World and New World taxa. One clade is comprised of Mormopterus,Platymops, Sauromys, Neoplatymops, Molossops, Cynomops, Cheiromeles, Molossus, and Promops. The other clade includes Tadarida, Otomops, Nyctinomops, Eumops, Chaerephon, and Mops. The position of Myopterus with respect to these two groups is unclear. As in other recent analyses, we find that several genera do not appear to be monophyletic (e.g. Tadarida, Chaerephon, and Molossops sensu lato). We recommend that the subgenera of Molossops sensu lato and Austronomus be recognized at the generic level. We conclude that much more data are needed to investigate lower level problems (generic monophyly and relationships within genera) and to resolve the higher‐level branching pattern of the family.

“…Both Antrozous and Lasiurus have hairs that are all the same length on the forehead. Braestrup (1933) stated that the tuft of hairs associated with the gland on the forehead is present and developed only in adult males during the mating period. However, we examined specimens of C. chapini taken throughout the year and all males, regardless of the time of year, showed a developed gland.…”

Section: Appendixmentioning

confidence: 99%

Phylogeny of Molossidae Gervais (Mammalia: Chiroptera) inferred by morphological data

¹

,

²

2015

View full text Add to dashboard Cite

Molossidae is a large (roughly 100 species) pantropically distributed clade of swift aerially insectivorous bats for which the phylogeny remains relatively unknown and little studied compared with other speciose groups of bats. We investigated phylogenetic relationships among 62 species, representing all extant molossid genera and most of the subgenera, using 102 morphological characters from the skull, dentition, postcrania, external morphology, tongue, and penis, based on direct observation and literature reports. Both parsimony and Bayesian analyses were used in phylogenetic reconstruction. Our analysis supports two main clades of molossids, both of which mingle Old World and New World taxa. One clade is comprised of Mormopterus,Platymops, Sauromys, Neoplatymops, Molossops, Cynomops, Cheiromeles, Molossus, and Promops. The other clade includes Tadarida, Otomops, Nyctinomops, Eumops, Chaerephon, and Mops. The position of Myopterus with respect to these two groups is unclear. As in other recent analyses, we find that several genera do not appear to be monophyletic (e.g. Tadarida, Chaerephon, and Molossops sensu lato). We recommend that the subgenera of Molossops sensu lato and Austronomus be recognized at the generic level. We conclude that much more data are needed to investigate lower level problems (generic monophyly and relationships within genera) and to resolve the higher‐level branching pattern of the family.

“…These seem to be correlated in part to geographic location. In the New and Old World tropics, a wide variety of reproductive habits, from monestry to polyestry, are displayed by molossids, the biannually recurring estrous pattern being common (Braestrup, 1933;Harrison, 1958;Marshall and Corbet, 1959;Brosset, 1962;Kock, 1969;Mutere, 1973a,b;Kingdon, 1974;Kashyap, 1980;Haussler et al, 1981;Krutzsch and Crichton, 1985). In temperate regions of the New World, a single annual reproductive cycle appears to be the rule.…”

Section: Introductionmentioning

confidence: 99%

Reproductive biology of the male little mastiff bat, Mormopterus planiceps (Chiroptera: Molossidae), in Southeast Australia

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1987

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The anatomy, biology, and chronology of reproduction in the male of the long penile form of Mormopterus planiceps was studied in southeast South Australia and Victoria. In the morphology of its primary and accessory reproductive organs, M. planiceps was generally reminiscent of other Molossidae; however, in the specialized (sebaceous) nature of the Cowper's gland ducts, in the presence of para-anal glands, and in the unusual, horizontally bifid glans penis and the greatly elongated os penis, it was distinct from other Molossidae studied to date. Young of the year were not reproductively active. Adults displayed a single annual spermatogenic cycle that commenced in spring (September/October) and culminated in spermiogenesis in autumn (February-May), during which period plasma levels of testosterone overtook androstenedione. Thereafter, spermatogenesis appeared to cease (though scattered sperm were seen in the seminiferous tubules until August), but abundant epididymal sperm reserves persisted until September/(October). The accessory glands were hypertrophied during this period, becoming involuted by October. Although the numbers of animals available for study were small, these observations, together with the appearance of spermatozoa in the ductus deferens in August/September suggested that mating could occur during the interval from autumn to spring. Late winter/spring insemination is normal for molossids from temperate environments. However, protracted spermatogenesis commencing in spring that is not accompanied by the availability of spermatozoa until autumn, and a subsequent apparent extension of fertility (epididymal sperm storage, accessory gland hypertrophy) beyond the testicular gametogenic phase, are aspects of the male reproductive cycle in M. planiceps that have not heretofore been described in another molossid bat.

“…A number of tropical Old World species from the family Molossidae have been reported to be polyoestrous. Braestrup (1933) reported that several bats from the Congo Basin are polyoestrous (Mops congicus = Tadarida congicus, Nyctinomus ochraceus = Tadarida ochraceus, Mops trevori = Tadarida trevori and Chaerephon russatus = Tadarida russatus). Marshall & Corbett (1959) studied Chaerephon hinde (= Tadarida pumila) from equatorial East Africa and reported two annual breeding cycles which correlate with peak rainfall.…”

Section: Introductionmentioning

confidence: 99%

Female reproductive patterns in nonhibernating bats

1979

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The major reproductive events in the oestrous cycles of nonhibernating mega- and microchiropteran species are reviewed. However, special attention is given to the reproductive biology of the temperate North American species, Tadarida brasiliensis mexicana (Molossidae), the Mexican free-tailed bat, which expresses dextral uterine and ovarian dominance. Only the larger right ovary is capable of producing an ovulatory follicle and the left has long been considered atrophic. In order to elucidate the normal oestrous cycle and define the structural and functional characteristics of the ovaries of this nonhibernating bat several analytical technique were utilized. These included light microscopic analysis, histochemical localization of delta 5-3 beta-hydroxysteroid dehydrogenase (HSD) activity, and radioimmunoassay of seasonal plasma progesterone levels. Interstitial tissue was found in both ovaries, but the left was almost entirely an interstitial organ. Histochemical analysis demonstrated that the gonads have seasonally varying amounts of delta 5-2 beta-HSD localized either in the thecal cells of the Graafian follicle or in the interstitium. The corpus luteum persisted throughout gestation, reaching maximum development just prior to parturition. Circulating progesterone levels correlated directly with luteal gland size and peaked at 106 ng/ml when the corpus luteum was largest.

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