Functional morphology of the mouthparts of lady beetle Coccinella transversoguttata (Coccinellidae, Coleoptera), with reference to their feeding mechanism

2019 ◽  
Vol 280 (5) ◽  
pp. 701-711 ◽  
Author(s):  
Ya‐Nan Hao ◽  
Yuan‐Xing Sun ◽  
Chang‐Zhong Liu
Keyword(s):  
Functional Morphology ◽  
Lady Beetle ◽  
Feeding Mechanism ◽  
Coccinella Transversoguttata

IV.—Studies on the Functional Morphology and Feeding Mechanism ofMonodella argentariiStella (Crustacea: Thermosbænacea)

1964 ◽  
Vol 66 (4) ◽  
pp. 49-90 ◽  
Author(s):  
Geoffrey Fryer
Keyword(s):  
Functional Morphology ◽  
Mode Of Action ◽  
Functional Significance ◽  
Past History ◽  
Structural Features ◽  
Filter Feeder ◽  
Feeding Mechanism ◽  
The Past ◽  
Present Distribution ◽  
Feeding Process

SynopsisStructural features related to habits of life are described for the thermosbænaceanMonodella argentarii.Although it can swim, this minute malacostracan is essentially benthic in habits, and its food consists of bottom detritus. The collection and subsequent manipulation of food are described.Monodellais not a filter feeder and no currents are involved in the feeding process which consists essentially of scraping, brushing and pushing. Cephalic appendages only are involved. The structure and mode of action of the mouthparts are described and illustrated in detail, and the functional significance of many structural features is explained.No justification is found for placing the Thermosbænacea in a separate division, the Pancarida, and its position within the Peracarida is discussed.The past history and present distribution of the Thermosbænacea are reconsidered.

XIV.—The Functional Morphology and Feeding Mechanism of the Chydorid CladoceranEurycercus lamellatus(O. F. Müller)

1963 ◽  
Vol 65 (14) ◽  
pp. 335-381 ◽  
Author(s):  
Geoffrey Fryer
Keyword(s):  
Functional Morphology ◽  
Mode Of Action ◽  
Functional Significance ◽  
Structural Features ◽  
Feeding Mechanism ◽  
Deposit Feeding

SynopsisOutstanding structural features related to habits of life in the chydorid cladoceranEurycercus lamellatusare described. Crawling is as important as swimming in this deposit-feeding species. The nature of the food, its collection and subsequent manipulation, are described. Both cephalic and trunk appendages are involved in this process. Their structure and mode of action are described and illustrated in detail. Many hitherto unknown structural features are described and the functional significance of these and other morphological peculiarities is explained.

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.

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