Matches in SemOpenAlex for { <https://semopenalex.org/work/W1691697617> ?p ?o ?g. }
- W1691697617 abstract "Nocturnal vision is a demanding task for insects with small eyes. As it gets dimmer the noise imposed by the stochastic nature of photon arrival makes vision unreliable. Despite this, there are quite a number of animal species that are active at night and apparently see well. In this thesis I show that the compound eyes of nocturnal insects are sufficiently flexible to adapt to the particular window of intensities in which the species is active. These ommatidial adaptations for vision in nocturnal insects are found in the optics and morphology of the eye (Chapters I - III) and in the physiology of the photoreceptors (Chapters IV & V). I have also discovered that the various visual adaptations that optimise sensitivity in a compound eye, and thus adapt the eye for a crepuscular or nocturnal lifestyle, do not contribute equally in different groups of insects. The crepuscular Caligo memnon has evolved large eyes with large facets but retained a reasonably high spatial and temporal resolution. In the nocturnal bee Megalopta genalis, the eyes and facets are enlarged, the rhabdoms are wide and the spatial and temporal acuity very poor compared to diurnal insects. In addition to this, M. genalis has a high gain of transduction present in its photoreceptors. The nocturnal dung beetle Onitis aygulus has refracting superposition eyes and increases optical sensitivity by possessing a wide superposition aperture. In addition, this beetle has slow photoreceptors with high gain. Thus, there are a variety of solutions to improve visual sensitivity and reliability in dim light. Exactly which solution evolved in which group most likely depends on constraints imposed by different phylogenetic histories, developmental constraints and different selection pressures due to different life styles. (Less)" @default.
- W1691697617 created "2016-06-24" @default.
- W1691697617 creator A5014075873 @default.
- W1691697617 date "2008-01-01" @default.
- W1691697617 modified "2023-09-25" @default.
- W1691697617 title "Ommatidial adaptations for vision in nocturnal insects" @default.
- W1691697617 cites W1232118631 @default.
- W1691697617 cites W131881311 @default.
- W1691697617 cites W1481153288 @default.
- W1691697617 cites W1520282345 @default.
- W1691697617 cites W1580864686 @default.
- W1691697617 cites W1584196799 @default.
- W1691697617 cites W1586666367 @default.
- W1691697617 cites W1822526985 @default.
- W1691697617 cites W189164002 @default.
- W1691697617 cites W1915011327 @default.
- W1691697617 cites W1919781602 @default.
- W1691697617 cites W1934766713 @default.
- W1691697617 cites W1963858199 @default.
- W1691697617 cites W1966486588 @default.
- W1691697617 cites W1967305522 @default.
- W1691697617 cites W1968807527 @default.
- W1691697617 cites W1970042814 @default.
- W1691697617 cites W1971889306 @default.
- W1691697617 cites W1977460665 @default.
- W1691697617 cites W1977723905 @default.
- W1691697617 cites W1979062631 @default.
- W1691697617 cites W1981558670 @default.
- W1691697617 cites W1983127589 @default.
- W1691697617 cites W1983667759 @default.
- W1691697617 cites W1985400938 @default.
- W1691697617 cites W1985424395 @default.
- W1691697617 cites W1985840725 @default.
- W1691697617 cites W1987608565 @default.
- W1691697617 cites W1988284587 @default.
- W1691697617 cites W1989868645 @default.
- W1691697617 cites W1991155255 @default.
- W1691697617 cites W1993570284 @default.
- W1691697617 cites W1995042589 @default.
- W1691697617 cites W1995875735 @default.
- W1691697617 cites W1996509463 @default.
- W1691697617 cites W1999107956 @default.
- W1691697617 cites W1999488699 @default.
- W1691697617 cites W2002863037 @default.
- W1691697617 cites W2007344132 @default.
- W1691697617 cites W2007546162 @default.
- W1691697617 cites W2010284895 @default.
- W1691697617 cites W2011422474 @default.
- W1691697617 cites W2011775291 @default.
- W1691697617 cites W2012724204 @default.
- W1691697617 cites W2014128354 @default.
- W1691697617 cites W2016949103 @default.
- W1691697617 cites W2018917569 @default.
- W1691697617 cites W2019201020 @default.
- W1691697617 cites W2019555095 @default.
- W1691697617 cites W2025389634 @default.
- W1691697617 cites W2026509807 @default.
- W1691697617 cites W2031425377 @default.
- W1691697617 cites W2032011118 @default.
- W1691697617 cites W2033099403 @default.
- W1691697617 cites W2033402814 @default.
- W1691697617 cites W2033511869 @default.
- W1691697617 cites W2035108601 @default.
- W1691697617 cites W2035642378 @default.
- W1691697617 cites W2039625313 @default.
- W1691697617 cites W2053113323 @default.
- W1691697617 cites W2059387455 @default.
- W1691697617 cites W2059748911 @default.
- W1691697617 cites W2061681192 @default.
- W1691697617 cites W2066232637 @default.
- W1691697617 cites W2068633302 @default.
- W1691697617 cites W2068662533 @default.
- W1691697617 cites W2070214517 @default.
- W1691697617 cites W2071970566 @default.
- W1691697617 cites W2076237269 @default.
- W1691697617 cites W2078491806 @default.
- W1691697617 cites W2080261951 @default.
- W1691697617 cites W2080862781 @default.
- W1691697617 cites W2084057118 @default.
- W1691697617 cites W2084494456 @default.
- W1691697617 cites W2085617918 @default.
- W1691697617 cites W2086269740 @default.
- W1691697617 cites W2087045493 @default.
- W1691697617 cites W2087327657 @default.
- W1691697617 cites W2087762065 @default.
- W1691697617 cites W2093982141 @default.
- W1691697617 cites W2094117026 @default.
- W1691697617 cites W2096624534 @default.
- W1691697617 cites W2096702899 @default.
- W1691697617 cites W2097985544 @default.
- W1691697617 cites W2099866287 @default.
- W1691697617 cites W2100020529 @default.
- W1691697617 cites W2101630905 @default.
- W1691697617 cites W2102160787 @default.
- W1691697617 cites W2102305820 @default.
- W1691697617 cites W2103107463 @default.
- W1691697617 cites W2107228152 @default.
- W1691697617 cites W2107404481 @default.
- W1691697617 cites W2110772798 @default.
- W1691697617 cites W2111872304 @default.