Small-leaved mahogany (Swietenia mahagoni)

Mahoni or mahogany or West Indian mahogany or small-leaved mahogany (Swietenia mahagoni) is a species of Swietenia, a medium-sized semi-evergreen tree that grows up to 35 meters long, pinnate leaves for 12-25 cm long with four to eight leaflets where each leaflet has 5-6 cm length, 2-3 cm width and do not have terminal leaflets.

S. mahagoni has small flowers and is produced in panicles. The fruit is a wooden capsule for 5-10 cm long and 3-6 cm wide and contains many winged seeds. Young trees have fine and grayish wood, but turn darker and wrinkle with age.

Small-leaved mahogany wood was famous for shipbuilding and became an important ingredient that led to the golden age of furniture making in the 18th century. Mahogany is widely used for car interiors, trains, living rooms, public buildings, hotels, residences and office supplies.

Mahogany wood is used to make modern musical instruments because of its superior tonewood quality. Sometimes used on the top of the guitar, the back, sides and neck of the mandolin. This wood is also used in making Gibson Les Paul electric guitars for Custom, Deluxe and Studio models.

A laminate of three layers of mahogany poplar and mahogany was found on the drum shell line. Some research on the acaricidal effect of leaves and bark can be used to control pests in Varroa destructor honeybees.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Sapindales
Family: Meliaceae
Genus: Swietenia
Species: Swietenia mahagoni

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 ...

Javanese grasshopper (Valanga nigricornis)

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Purwaceng (Pimpinella pruatjan)

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