Spectral input systems of brazilian bees (1994)
- Authors:
- USP affiliated authors: VENTURA, DORA SELMA FIX - IP ; SOUZA, JOHN MANUEL DE - FMVZ
- Unidades: IP; FMVZ
- Subjects: INSETOS; ELETROFISIOLOGIA
- Language: Inglês
- Abstract: Experimental Psychology, Institute of Psychology and Center for Research in Neuroscience and Bahavior, University of São Paulo. +Inst. fur Neurobiologie, Freie Universitat. Berlin. Peitsch, et al. (J. comp. Physiol., 170:23-40, 1992) analysed spectral sensitivity functions (S(\03BB)) of photoreceptors of 43 hymenopteram species, showing in most of them three peaks (\03BBmax). at 340±12 nm, 434±11 nm and 534±10 nm, and in a few ones a fourth peak at 597±5 nm. Phylogenetic and functional factors appeared not to influence the S(\03BB) functions. Only ilumination condictions of the habit seemed to affect them : UV receptors of bees from tropical forests had \03BB max at \03BBs than those that inhabit open areas. Since this conclusion was based in data from only 5 species the present work was aimed at confirming it using a larger number of species and a more favorable recording method (Souza, DeVoe, Ventura, IOVS, 34: 1322, 1993). S(\03BB) functions were obtained intracellularly in photoreceptors of 12 species (Trigona spinnipes, Tetragonisca angustula, Nannotrigona testaceicornis, Paratrigona sumuda, Plebeia amerina, Melipona bicolor, Melipona quadricasciata, Scaptotrigona bipunctata, Frieseomelitta, Lestrimellita limão, Partamona subnuda e Schwarziana quadripuntacta). The results confirm the existence of three receptors in all species, with \03BB max at the UV. (340±8 nm), blue (449±17) and green (524±7); the red receptor was not found. The average \03BB max of the UV receptors did not differ from the population average found by Peitsch et al. It is not confirmed therefore that tropical bees have UV receptors with longer \03BB mac. Their blue and green receptors, however, had respectively longer and shorter \03BB max, increasing the overlap of these two input systems. This would imply better discriminative ability in the blue-green than in short \03BBs, as has been found in Melipona quadrifasciata(Menzel et al. J. Comp Physiol, 166:151-164, 989). Financial Support : CNPq/KFA. CNPq fellowship to LDBN. Bee Laboratory, IB/USP : species supply and ecological informations.
- Imprenta:
- Conference titles: Reuniao Anual da Fesbe
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ABNT
MASCARO, L D B et al. Spectral input systems of brazilian bees. 1994, Anais.. Caxambu: Instituto de Psicologia, Universidade de São Paulo, 1994. . Acesso em: 02 dez. 2025. -
APA
Mascaro, L. D. B., Schorn, N. J., Souza, J. M., & Ventura, D. S. F. (1994). Spectral input systems of brazilian bees. In . Caxambu: Instituto de Psicologia, Universidade de São Paulo. -
NLM
Mascaro LDB, Schorn NJ, Souza JM, Ventura DSF. Spectral input systems of brazilian bees. 1994 ;[citado 2025 dez. 02 ] -
Vancouver
Mascaro LDB, Schorn NJ, Souza JM, Ventura DSF. Spectral input systems of brazilian bees. 1994 ;[citado 2025 dez. 02 ] - Oponência espectral em células ganglionares na retina da tartaruga (Trachemys Scripta Elegans) envolvendo estimulação tetracromática
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