Die Beziehungen zwischen mechanischen Reizgr�ssen und station�ren Erregungszust�nden bei Borstenfeld-Sensillen von Bienen

Thurm, Ulrich

doi:10.1007/bf00340465

Cited by 90 publications

(21 citation statements)

References 28 publications

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“…4c). This is consistent with previous findings in Calliphora (Peters 1962;Richter 1964;Liske 1978), and similar to hair sensilla in other insects, where such a structural polarization is correlated with a directional preference (Thurm 1963(Thurm , 1965aGnatzy and Tautz 1980). This structural similarity suggests that the hair sensilla of the prosternal organs are maximally stimulated by dorsoventral bending of the hairs by the flapping movements of the contact sclerites ( Fig.…”

Section: Adequate Stimulus For the Sensillasupporting

confidence: 81%

“…4b). Hair sensilla from a neck hair plate of the honeybee are similarly polarized and are preferentially excited when the hair is bent in this direction (Thurm 1963). In contrast, in dragonflies and locusts the hair bases are circular (Fuldner 1955;Goodman 1959) and the sensilla do not exhibit a directional preference (Haskell 1959).…”

Section: Function Of the Hair Sensillamentioning

confidence: 96%

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Structure and kinematics of the prosternal organs and their influence on head position in the blowfly Calliphora erythrocephala Meig.

Preuss

Hengstenberg

1992

J Comp Physiol A

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The blowfly Calliphora has a mobile head and various, presumably proprioceptive, sense organs in the neck region. The "prosternal organs" are a pair of mechanosensory hair fields, each comprising ca. 110 sensilla. We studied their structure (Figs. 2-4), kinematics (Figs. 5, 6) and, after surgery, their influence on head posture in order to reveal their specific function.The hair sensilla are structurally polarized, all in roughly the same direction, and are stimulated by dorsoventral bending of the hairs (Figs. 3, 4). This occurs indirectly by flap-movements of two contact sclerites (Figs. 3, 6); they move in the same direction during pitch turns of the head, in opposite directions during roll turns, and barely at all during yaw turns of the head (Fig. 5).Bending and arresting all hairs of one field elicits a head roll bias to the non-operated side (Fig. 7) during tethered flight in visually featureless surroundings. In contrast, shaving all hairs of one field elicits a head roll to the operated side . The surgically induced bias of head posture is not compensated within three days (Fig. 10). Our results show that the prosternal organs of Calliphora sense pitch and roll turns of the fly's head, and control at least its roll position.Abbreviations." HP ~ TP ~ angular positions of the sagittal planes of the fly's head and thorax, respectively, relative to an external reference; HR~ head roll angle of the fly's head relative to its thorax, HR>0 ~ for clockwise head roll, looking in flight direction; N, number of flies; n, number of measurements; PO, prosternal organ; SD, standard deviation; SEM, standard error of the mean * Present address:

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Section: Adequate Stimulus For the Sensillasupporting

confidence: 81%

Section: Function Of the Hair Sensillamentioning

confidence: 96%

Structure and kinematics of the prosternal organs and their influence on head position in the blowfly Calliphora erythrocephala Meig.

Preuss

Hengstenberg

1992

J Comp Physiol A

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“…The functional significance to the plant of such taxonomically diagnostic microsculpture has been attributed to differential refraction of incident light by thin-walled cells, which would contribute to the color of the flower as perceived by insect pollinators (5,6 Tactile perception by insects is accomplished by mechanoreceptive sensilla trichodea, which are concentrated on various parts of the body including the tips of the antennae (9,10). These sensilla typically exhibit phasic-tonic nervous discharge so that simple deflection results in an initial rapid discharge rate and a continuing rate as long as stimulation continues; some sensilla may respond also to direction, degree, and velocity of bending (11,12). The size and spacing ofthe major (ca.…”

mentioning

confidence: 99%

Flower petal microtexture is a tactile cue for bees

Kevan

Lane

1985

Proc. Natl. Acad. Sci. U.S.A.

223

121

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Honeybees are shown to be able to detect, learn, and discriminate between microsculptured epidermes of flower petals. The sensilla trichodea at the tips of the bees' antennae are in the same size range as the microsculptural features of the petals (ca. 10 ,um), which presumably deflect these mechanoreceptive sensilla in characteristic ways. Honeybees were trained to associate reward with one floral texture and to choose that over another. Further, the bees also recognized differences in textures at different ends of petals of the same species. The phenomenon is significant in that it suggests another way in which insect pollinators can discriminate between the flowers of different plant species and so act as species isolators. Also, the microsculptural patterns differ from one end of a petal to the other and, therefore, can be used as nectar-guides by foraging bees. This study presents a previously unreported conditioned response to texture by insects and shows the functional significance of a floral character used in plant taxonomy.

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“…Their thermosensitivity, long recognized, has been reported e.g., in crustacean stretch receptors (Burkhardt, 1959), in mechanoreceptive hairs of bees (Thurm, 1963), and in the trichobothria of the sap-sucking bug, Py~~hocoPi~ (Draslar, in prepo) but much more frequently in vertebrates (for references and treatment, see Bensel, 1952Bensel, , 1974aBensel, , 1976Jarvilehto, 1973). The oral and facial regions of squirrel monkeys provide an example which permits comparison of cold receptor responses with those of cold-sensitive mechanoreceptors both to sudden temperature change.…”

Section: B Mechano-thermalmentioning

confidence: 98%

Peripheral Thermal Receptors

Loftus

1978

Sensory Ecology

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Die Beziehungen zwischen mechanischen Reizgr�ssen und station�ren Erregungszust�nden bei Borstenfeld-Sensillen von Bienen

Cited by 90 publications

References 28 publications

Structure and kinematics of the prosternal organs and their influence on head position in the blowfly Calliphora erythrocephala Meig.

Structure and kinematics of the prosternal organs and their influence on head position in the blowfly Calliphora erythrocephala Meig.

Flower petal microtexture is a tactile cue for bees

Peripheral Thermal Receptors

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