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Diet of water striders (Gerris lacustris Linnaeus 1758) in a rice field near Seoul, Korea

Izabella, Olejniczak, et al. Diet composition of Gerris lacustris in a rice-field was compared with the composition of insect fauna from sweep nets conducted in the same habitat. Diptera was the most common prey among the insects potentially available to waterstriders. Water striders consumed Diptera, Homoptera and Hymenoptera in larger proportions than proportions of

By |8월 26th, 2016|Categories: Publications|0 Comments

Producer-scrounger roles and joining based on dominance in a free-living group of Mexican jays (Aphelocoma ultramarina)

McCormack, John E., Piotr G. Jablonski, and Jerram L. Brown While foraging, animals often exploit group members to obtain food. One way to describe this behaviour is with the producer-scrounger (PS) model, where scroungers use social interaction to obtain food discovered by producers. Mexican jays (Aphelocoma ultramarina) are a group foraging species with a

By |8월 26th, 2016|Categories: Publications|0 Comments

Sexual Size Dimorphism and Morphological Sex Determination in the Black-billed Magpie in South Korea (Pica pica sericea)

Lee, Sang-im, et al. Statistical tools for determining sex in the sexually monomorphic black-billed magpie based on morphological characters have been developed based on studies of European and North American populations. However, since no morphological method has been developed for black-billed magpies in Korea, it has been difficult to conduct field studies that require

By |8월 26th, 2016|Categories: Publications|0 Comments

Winter foraging of threatened cranes in the Demilitarized Zone of Korea: Behavioral evidence for the conservation importance of unplowed rice fields

Lee, Sang Don, Piotr G. Jabłoński, and Hiroyoshi Higuchi We studied the winter foraging activity of the endangered Red-crowned crane (Grus japonensis) and the vulnerable White-naped crane (Grus vipio) in the Cheolwon area of the Civilian Control Zone (CCZ) area of South Korea, adjacent to the Demilitarized Zone with North Korea. Due to its limited development, the

By |8월 26th, 2016|Categories: Publications|0 Comments

Effect of heterospecifics on foraging of endangered red-crowned and white-naped cranes in the Korean Demilitarized Zone

Lee, Sang Don, Piotr G. Jabłoński, and Hiroyoshi Higuchi We determined how the presence of hetero-specific individuals in the vicinity of a focal individual affects the behavior of two critically endangered species of cranes on their wintering grounds at Cheolwon in the Korean Demilitarized Zone. The red-crowned crane, Grus japonensis, is larger than the

By |8월 25th, 2016|Categories: Publications|0 Comments