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Comparative biology of insects and arachnids, with emphasis on groups including cave specimens

Grant number: 00/04686-4
Support type:Research Projects - Thematic Grants
Duration: March 01, 2001 - March 31, 2007
Field of knowledge:Biological Sciences - Zoology - Animal Behavior
Principal researcher:Pedro Gnaspini Netto
Grantee:Pedro Gnaspini Netto
Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Due to peculiar biotic and non-biotic characteristics of the subterranean environment, organisms which live in this environment may present typical features, expressed on morphology, ecology, physiology, activity rhythms, etc. The study of comparative biology focusing on taxonomic groups which include both epigean and hypogean species is the only way to map in phylogeny how these features arose. However, these studies frequently can not be done exactly due to the lack of taxonomic information. Thence, the present project broadly aims the detection and interpretation of possible modifications (morphological, physiological, behavioral, etc.) which may have occurred among cave arthropods. To reach this goal, some studies are primarily proposed, including proceeding with studies already started among the researchers, star new studies, and evaluate and porpose potential studies (mainly those related with post-doctorate projects). It should be stressed that collaborative studies including researchers from other institutions and universities, as already occur, should be strenghtened and possibly increased. Studies will focus mainly on beetles and arachnids (specially harvestmen). Already planned projects include: taxonomy of cholevine beetles; natural history of the troglobitic carabid beetles Schizogenius ocellatus and Coarazuphium cessaima; taxonomy, comparative physiology and reproductive biology of harcestmen of the genus Goniosoma; chemical and behavioral defenses of harvestmen; natural history of the pseudoscorpion Maxchernes iporangae, and of the bug Zelrus travassosi; and comparative reaction to light among epigean and hypogean crickets; potential studies include systematics of springtails and chrnobiology of cave arthopods. In addition, exploration activities and faunistic surveys may be done in less known geographic areas, when necessary. (AU)

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Scientific publications (11)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CHELINI, MARIE-CLAIRE; WILLEMART, RODRIGO H.; GNASPINI, PEDRO. Gregarious behavior of two species of Neotropical harvestmen (Arachnida: Opiliones: Gonyleptidae). JOURNAL OF ARACHNOLOGY, v. 40, n. 2, p. 256-258, 2012. Web of Science Citations: 8.
GNASPINI, PEDRO; RODRIGUES, GISELE C. S. Comparative study of the morphology of the gland opening area among Grassatores harvestmen (Arachnida, Opiliones, Laniatores). JOURNAL OF ZOOLOGICAL SYSTEMATICS AND EVOLUTIONARY RESEARCH, v. 49, n. 4, p. 273-284, NOV 2011. Web of Science Citations: 12.
CHELINI, MARIE-CLAIRE; WILLEMART, RODRIGO H.; GNASPINI, PEDRO. Caves as a Winter Refuge by a Neotropical Harvestman (Arachnida, Opiliones). Journal of Insect Behavior, v. 24, n. 5, p. 393-398, SEP 2011. Web of Science Citations: 17.
GNASPINI, PEDRO; LERCHE, CRISTIANO FREDERICO. Embryonic Development of Ampheres leucopheus and lporangaia pustulosa (Arachnida: Opiliones: Gonyleptidae). JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION, v. 314B, n. 6, p. 489-502, SEP 15 2010. Web of Science Citations: 6.
WILLEMART, RODRIGO H.; PEREZ-GONZALEZ, ABEL; FARINE, JEAN-PIERRE; GNASPINI, PEDRO. Sexually Dimorphic Tegumental Gland Openings in Laniatores (Arachnida, Opiliones), With New Data on 23 Species. Journal of Morphology, v. 271, n. 6, p. 641-653, JUN 2010. Web of Science Citations: 24.
WILLEMART, RODRIGO H.; FARINE, JEAN-PIERRE; GNASPINI, PEDRO. Sensory biology of Phalangida harvestmen (Arachnida, Opiliones): a review, with new morphological data on 18 species. ACTA ZOOLOGICA, v. 90, n. 3, p. 209-227, JUL 2009. Web of Science Citations: 51.
GNASPINI‚ P.; MÁRCIO‚ B.; SILVA‚ DA; FABIANA‚ C.P. The occurrence of two adult instars among Grassatores (Arachnida: Opiliones)—A new type of life-cycle in arachnids. INVERTEBRATE REPRODUCTION & DEVELOPMENT, v. 45, n. 1, p. 29-39, 2004.

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