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Humpback whales (Megaptera novaeangliae) manufacture bubble-nets as tools to increase prey intake

NEWS - Humpback whales ( Megaptera novaeangliae ) create bubble net tools while foraging, consisting of internal tangential rings, and actively control the number of rings, their size, depth and horizontal spacing between the surrounding bubbles. These structural elements of the net increase prey intake sevenfold. Researchers have known that humpback whales create “bubble nets” for hunting, but the new report shows that the animals also manipulate them in a variety of ways to maximize catches. The behavior places humpbacks among the rare animals that make and use their own tools. “Many animals use tools to help them find food, but very few actually make or modify these tools themselves,” said Lars Bejder, director of the Marine Mammal Research Program (MMRP), University of Hawaii at Manoa. “Humpback whales in southeast Alaska create elaborate bubble nets to catch krill. They skillfully blow bubbles in patterns that form a web with internal rings. They actively control details such ...

Chameleon forest dragon (Gonocephalus chamaeleontinus)

Bunglon hutan or chameleon anglehead lizard or chameleon forest dragon ( Gonocephalus chamaeleontinus ) is an animal species in Agamidae, having a larger size than other species, the most unique head shape and has the ability to change color by changing mood rather than for camouflage. Morphology G. chamaeleontinus has a total length of 40 cm, the muzzle to the buttocks is 16 cm, the base color is green with orange, yellow to brownish spots and sexual dimorphism. The eyes are protected by a movable eyelid surrounded by a slightly darker color, while males have a bright blue color around the eyes. Short head with a triangle and thorns above the eyes. Medium-sized head scales, vary, smooth and have a little tubercle that extends above the ear. Heterodont teeth with acrodont type and dorsal tongue are covered by reticular papillae. The upper labial scale consists of 10-12 units and the lower labial scale consists of 11-14 units. Dorsal body scales are composed of small and fine ...

Takenoshin Nakai swallow-wort (Vincetoxicum nakaianum) replaces V. magnificum and C. magnificum

NEWS - Researchers reported an erect herbaceous species distributed in the eastern part of Honshu Island, Vincetoxicum magnificum (Nakai) Kitag. based on Cynanchum magnificum Nakai, nomen nudum. Therefore, they named this species Takenoshin Nakai swallow-wort ( Vincetoxicum nakaianum K.Mochizuki & Ohi-Toma). Vincetoxicum Wolf (Asclepiadeae) is the third largest genus in the Asclepiadoideae consisting of about 260 species geographically extending from tropical Africa, Asia and Oceania to temperate regions of Eurasia. A total of 23 species are known from Japan, including 16 endemic species. Molecular phylogeny divides Japanese Vincetoxicum into four groups: the “Far Eastern” clade consisting of 11 endemic species and 4 more widespread species, 1 sister species to the “Far Eastern” clade, the “subtropical” clade consisting of 2 species and the “Vincetoxicum s. str.” clade consisting of 5 species. V. magnificum (Nakai) Kitag. (Japanese: tachi-gashiwa) is closely related to V. macro...

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