Intraspecific variability in the tapping behavior of the deathwatch beetle,Xestobium rufovillosum (Coleoptera: Anobiidae)

1993 ◽  
Vol 6 (5) ◽  
pp. 549-562 ◽  
Author(s):  
Peter R. White ◽  
Martin C. Birch ◽  
Stuart Church ◽  
Chantelle Jay ◽  
Edwin Rowe ◽  
...  
Keyword(s):  
Intraspecific Variability ◽  
Xestobium Rufovillosum ◽  
Deathwatch Beetle

The Common Deathwatch Beetle Xestobium rufovillosum (DeGeer, 1774) as a Pest for Paper in Books

2020 ◽  
Vol 41 (1) ◽  
pp. 31-48
Author(s):  
Joanna Karbowska-Berent ◽  
Izabela Żołowicz ◽  
Elżbieta M. Jabłońska
Keyword(s):  
Relative Humidity ◽  
Unusual Case ◽  
Epicoccum Nigrum ◽  
Xestobium Rufovillosum ◽  
Deathwatch Beetle ◽  
The Common ◽  
Stachybotrys Atra ◽  
Very High

AbstractA small repository in a cathedral in Poland, storing severely damaged books, was investigated with regard to insects and fungi. Entomological and microbiological surveys were performed to estimate the extent of the infestation and the microbial deterioration of the books. Most of the books were attacked by insects although to varying degrees. They were damaged by tunnels bored by the larvae and filled with larval faeces. Some living larvae and many dead adult beetles were found in the books or in the frass. The larvae and most of the beetles were identified as the common deathwatch beetle Xestobium rufovillosum (DeGeer, 1774). The development of Xestobium rufovillosum in books is an unusual case and has rarely been mentioned in the literature. Several books in the repository were also covered by microfungi, especially by Chaetomium murorum, Ch. elatum, Myxotrichum chartarum, Stachybotrys atra and Epicoccum nigrum. The temperature in the repository varied, depending on the season of the year (2.6 °C – 26.2 °C), while the relative humidity was high (constantly above 65 %). The concentration of the fungal bioaerosol was very high (4,120 cfu/m3). The article includes a list of recommendations pertaining to the elimination of the microorganisms and insects.

Functional significance of preserved color patterns of mollusks from the Gosport Sand (Eocene) of Alabama

1988 ◽  
Vol 62 (01) ◽  
pp. 83-87 ◽  
Author(s):  
Patricia H. Kelley ◽  
Charles T. Swann
Keyword(s):  
Functional Morphology ◽  
Functional Significance ◽  
Intraspecific Variability ◽  
Color Pattern ◽  
Color Patterns ◽  
Historical Factors ◽  
Life Mode ◽  
Molluscan Fauna ◽  
Excellent Preservation ◽  
Architectural Constraints

The excellent preservation of the molluscan fauna from the Gosport Sand (Eocene) at Little Stave Creek, Alabama, has made it possible to describe the preserved color patterns of 15 species. In this study the functional significance of these color patterns is tested in the context of the current adaptationist controversy. The pigment of the color pattern is thought to be a result of metabolic waste disposal. Therefore, the presence of the pigment is functional, although the patterns formed by the pigment may or may not have been adaptive. In this investigation the criteria proposed by Seilacher (1972) for testing the functionality of color patterns were applied to the Gosport fauna and the results compared with life mode as interpreted from knowledge of extant relatives and functional morphology. Using Seilacher's criteria of little ontogenetic and intraspecific variability, the color patterns appear to have been functional. However, the functional morphology studies indicate an infaunal life mode which would preclude functional color patterns. Particular color patterns are instead interpreted to be the result of historical factors, such as multiple adaptive peaks or random fixation of alleles, or of architectural constraints including possibly pleiotropy or allometry. The low variability of color patterns, which was noted within species and genera, suggests that color patterns may also serve a useful taxonomic purpose.

Palaeontology, taxonomic revision and variability of some species of the genus Gassendiceras Bert et al., 2006 (Ammonitina, Upper Barremian) from southeastern Franc

2013 ◽  
Vol 63 (3) ◽  
pp. 355-429 ◽  
Author(s):  
Didier Bert ◽  
Stéphane Bersac ◽  
Gérard Delanoy ◽  
Léon Canut
Keyword(s):  
New Species ◽  
Intraspecific Variability ◽  
Taxonomic Revision ◽  
Two New Species

Abstract Bed-by-bed sampling of twelve Barremian sections in southeastern France from pelagic basin (Vocontian Basin) to neritic platforms (Arc of Castellane, Arc of Nice and Provencal Domain) has enabled the collection of isochronous samples of the ammonite genus Gassendiceras. Three poorly known species of the Toxancyloceras vandenheckei Zone (Upper Barremian) are revised: G. alpinum, G. multicostatum and G. hoheneggeri; two new species are described (G. rebouleti nov. sp. and G. bosellii nov. sp.). The intraspecific variability of particular species was recognised. This variability is between slender peramorphic and robust paedomorphic extreme morphologies, with the presence of all intermediates.

The future of research with carnivorous plants

2018 ◽  
Author(s):  
Aaron M. Ellison ◽  
Lubomír Adamec
Keyword(s):  
Natural Selection ◽  
Population Biology ◽  
Field Experiments ◽  
Evolutionary Dynamics ◽  
Species Concept ◽  
Intraspecific Variability ◽  
Carnivorous Plants ◽  
Assisted Migration ◽  
Transcriptomic Data ◽  
Phylogenetic Framework

The material presented in the chapters of Carnivorous Plants: Physiology, Ecology, and Evolution together provide a suite of common themes that could provide a framework for increasing progress in understanding carnivorous plants. All speciose genera would benefit from more robust, intra-generic classifications in a phylogenetic framework that uses a unified species concept. As more genomic, proteomic, and transcriptomic data accrue, new insights will emerge regarding trap biochemistry and regulation; interactions with commensals; and the importance of intraspecific variability on which natural selection works. Continued elaboration of field experiments will provide new insights into basic physiology; population biology; plant-animal and plant-microbe relationships; and evolutionary dynamics, all of which will aid conservation efforts and contribute to discussions of assisted migration as the climate continues to change.

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