Epizoic cyanobacteria associated with harvestmen (Arachnida: Opiliones) from Tobago, West Indies

Virginia A. Young, Michael K. Moore, Victor R. Townsend, Jr.

Abstract


On Tobago, there is a species of sclerosomatid harvestman (Prionostemma sp.) that serves as a host to a variety of cryptogams. In the living condition, the exterior of the harvestmen is light blue in appearance, which quickly fades to a bluish-green following preservation in ethanol. Observations of specimens with scanning electron microscopy (SEM) revealed the occurrence of several types of epizoic organisms, including prokaryotic cells (several sizes of bacilli and cocci) and at least two species of fungi. Moreover, using PCR with specific primers, we confirmed the presence of at least one species of epizoic cyanobacterium occurring on the tegument of the harvestmen. The tegument of the carapace and abdomen of Prionostemma sp. is full of numerous small pits that may facilitate colonisation and survival by epizoic organisms.

Keywords


Camouflage; Cryptogam; Fungi; Sclerosomatidae; Tegument

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References


Donaldson, Z.R. and Grether, G.F. 2007. Tradition without social learning: Scent-mark based communal roost formation in a Neotropical harvestman (Prionostemma sp.). Behavioral Ecology and Sociobiology, 61: 801–809.

Gradstein, S.R. and Equihua, C. 1995. An epizoic bryophyte and algae growing on the lizard Corythophanes cristatus in Mexican rain forest. Biotropica, 27: 265-268.

Gressitt, J.L., Samuelson, G.A. and Vitt, D.H. 1968. Moss growing on living Papuan moss-forest weevils. Nature, 217: 765-767.

Gressitt, J.L. and Sedlacek, J. 1967. Papuan weevil genus Gymnopholus: Supplement and further studies in epizoic symbiosis. Pacific Insects, 9: 481-500.

Grether, G.F., and Donaldson, Z.R. 2007. Communal roost site selection in a Neotropicalharvestman: habitat limitation vs. tradition. Ethology, 113: 290–300.

Hendrickson, J.R. and Weber, W.A. 1964. Lichens on Galapagos giant tortoises. Science, 144: 1463.

Lücking, R., Mata-Lorenzen, J. and Dauphin L.G. 2010. Epizoic liverworts, lichens and fungi growing on Costa Rican shield mantis (Mantodea: Choeradodis). Studies on Neotropical Fauna and Environment, 45: 175-186.

Machado, G., Raimundo, R.L.G. and Oliveira, P.S. 2000. Daily activity schedule, gregariousness, and defensive behaviour in the Neotropical harvestman Goniosoma longipes (Arachnida: Opiliones: Gonyleptidae). Journal of Natural History, 34: 587-596.

Machado, G., and Vital. D.M. 2001. On the occurrence of epizoic algae and liverworts on the harvestmen Neosadocus aff. variabilis (Opiliones: Gonyleptidae). Biotropica, 33: 535-538.

Martínez-Torres, S.D., Flórez Daza, A.E. and Linares-Castillo, E.L. 2011. Meeting between kingdoms: Discovery of a close association between Diplopoda and Bryophyta in a transitional Andean-Pacific forest in Colombia. International Journal of Myriapodology, 6: 29-36.

Olson, D.M., Dinerstein, E., Wikramanayake, E.E., Burgess, N.D., Powell, G.V.N., Underwood, E.C., D’amico, J.A., Itoua, I., Strand, H.E., Morrison, J.C., Loucks, C.J., Allnutt, T.F., Ricketts, T.H., Kura, Y., Lamoreux, J.F., Wettengel, W.W., Hedao, P., and Kassem, K.R. 2001. Terrestrial ecoregions of the world: A new map of life on earth: A new global map of terrestrial ecoregions provides an innovative tool for conserving biodiversity, BioScience, 51: 933-938.

Proud, D.N., Wade R.R., Rock, P., Townsend, VR. Jr., and Jiménez Chavez, D. 2012. Epizoic cyanobacteria associated with a Neotropical harvestman (Opiliones: Sclerosomatidae) from Costa Rica. Journal of Arachnology, 40: 259-261.

Thompson, R.H. 1972. Algae from the hair of the sloth Bradypus. Journal of Phycology, 8: 8.

Townsend, V.R. Jr., Moore, M.K., Proud, D.N. and Young, V.A. 2012. A preliminary survey of the Harvestmen (Arachnida: Opiliones) of Tobago, West Indies. Living World, Journal of the Field Naturalist Club of Trinidad and Tobago, 2012: 41-53.

Wade, R.R., Loaiza Phillips, E., Townsend, V.R. Jr. and Proud, D.N. 2011. Activity patterns of two species of Neotropical harvestmen (Arachnida, Opiliones) from Costa Rica. Annals of the Entomological Society of America, 104: 1360-1366.


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