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Hairy kisses: tactile cheliceral courtship affects female mating decisions in Leucauge mariana (Araneae, Tetragnathidae)
(2015)
Sexual selection is thought to be an important force driving the evolution of sexually dimorphic morphology and behavior, but direct experimental tests of the functions of species-specific details of morphology are rare ...
Effect of El Niño and La Niña on abundance of frugivorous and nectarivorous terrestrial birds in three tropical forests
El efecto de El Niño y La Niña sobre la abundancia de aves frugívoras y nectarívoras terrestres en tres bosques tropicales
(2019-05-14)
El Niño and La Niña climatic oscillations have dramatic effects on population dynamics and community
structure of different animals. For marine birds, El Niño phenomenon drastically increases their mortality
and reduces ...
Incidence of parasitoids and predators on eggs of seven species of Therididae (Araneae)
(2012)
Although many characteristics of the egg sacs of spiders likely evolved to reduce the effect of parasites and predators that attack their eggs, many parasite and predator insects have become specialized on spider eggs. ...
The prey attack behavior of achaearanea tesselata (araneae, theridiidae)
(2006)
The attack behavior of the cobweb spider Achaearanea tesselata (Keyserling 1884) is roughly separated into three sequential steps: descend from the suspended retreat, pass through the sheet threads, and wrap the prey from ...
Fallen Branches as Part of Leaf-Cutting Ant Trails: Their Role in Resource Discovery and Leaf Transport Rates in Atta cephalotes
(2007)
Fallen branches, logs, and exposed roots (fallen branches hereafter) commonly form part of the trunk trail system of leaf-cutting ants that inhabit the tropical rain forest. We studied the role of fallen branches on resource ...
Distribución, ecología y conservacion de la avifauna de la cuenca del río Savergre, Costa Rica
(2004)
Presentamos en este trabajo información sobre la riqueza, distribución y patrones de endemismo de la cuenca del río Savegre. Adicionalmente, incluimos información general sobre la dieta, condición (ej., residente o migratoria) ...
Characteristics of the cocoon and natural history of the gregarious Meteorus restionis sp. n. (Hymenoptera, Braconidae, Meteorinae) from Costa Rica
(2011)
A new species of a gregarious Meteorus wasp (Braconidae) constructs an unusual cocoon mass. Meteorus restionis sp. n. is described and distinguished from similar species. Cocoons of M. restionis are dark-brown, ovoid, and ...
Complex behavioral plasticity is not lost in spiderlings with miniature brains
(2021-06-16)
The brains of smaller animals are smaller than those of their larger relatives, but it is not clear whether their adaptive behavioral flexibility is more limited. Previous interspecific comparisons found that aspects of ...
Maternal care and offspring behaviour in three theridiid species (Araneae, Theridiidae)
(2009)
Maternal care is widespread in theridiids. Theridion evexum Keyserling breaks the threads in the outer layer of the egg sac to allow its spiderlings to leave the sac. Achae-aranea tesselata (Keyserling) and Anelosimus ...