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Pristomyrmex Tsujii
''Pristomyrmex tsujii'' (named for Prof. Kazuki Tsuji) is a species of ant in the genus ''Pristomyrmex''. Known from Fiji, where they are widely distributed but rarely encountered. The species has a discrete ergatoid queen caste that is intermediate between a worker and an alate queen. Habitat and distribution Despite being widely distributed across the Fijian archipelago, workers of ''Pristomyrmex tsujii'' are rarely encountered in the field, although males have been collected in Malaise traps with some frequency. Workers have been collected from Gau, Koro, Vanua Levu and Viti Levu. Of these, all were collected in leaf litter samples except for one found foraging on a fallen tree and another found foraging under a stone. Collection records suggest the species prefers primary rainforest, but several collections from secondary forests and forest fragments suggest it can tolerate some degree of disturbance. The strongly distended gasters of the ergatoid queens are pres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vanua Levu
Vanua Levu (pronounced ), formerly known as Sandalwood Island, is the second largest island of Fiji. Located to the north of the larger Viti Levu, the island has an area of and a population of 135,961 . Geology Fiji lies in a tectonically complex area between the Australian Plate and the Pacific Plate. The Fiji Platform lies in a zone bordered with active extension fault lines around which most of the shallow earthquakes were centred. These fault lines are the Fiji Fracture Zone (FFZ) to the north, the 176° Extension Zone (176°E EZ) to the west, and the Hunter Fracture Zone (HFZ) and Lau Ridge to the east. Mio-Pliocene sandstones and marl grade into epiclastics and andesitic volcanics of the Suva Group. The Group forms the Korotini Tableland in the middle of the island, it includes the peaks of Seseleka (), Ndelanathau (), Nararo (), Valili (), Mariko (), Mount Nasorolevu (), Ndikeva (), and Uluingala (). The Pliocene Undu Group in the northeastern portion of the island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petiole (insect Anatomy)
In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and wasps in the suborder Apocrita. The petiole can consist of either one or two segments, a characteristic that separates major subfamilies of ants. Structure The term 'petiole' is most commonly used to refer to the constricted first (and sometimes second) metasomal (posterior) segment of members of the hymenopteran suborder Apocrita (ants, bees, and wasps). It is sometimes also used to refer to other insects with similar body shapes, where the metasomal base is constricted. The petiole is occasionally called a pedicel, but in entomology, that term is more correctly reserved for the second segment of the antenna; while in arachnology, 'pedicel' is the accepted term to define the constriction between the cephalothorax and abdomen of spiders. The plump portion of the abdomen posterior to the petiole (and postpetiole in the Myrmicinae) is called the gaster ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Guinea
New Guinea (; Hiri Motu Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of Port Moresby (Capital of Papua New Guinea). It is a simplified version of Motu, from the Austronesian l ...: ''Niu Gini''; id, Papua, or , historically ) is the List of islands by area, world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Mainland Australia, Australia by the wide Torres Strait, though both landmasses lie on the same continental shelf. Numerous smaller islands are located to the west and east. The eastern half of the island is the major land mass of the independent state of Papua New Guinea. The western half, known as Western New Guinea, forms a part of Indonesia and is organized as the provinces of Papua (province), Papua, Central Papua, Highland Papua, South Papua, Southwest Papua, and West Papua (province), West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pristomyrmex Inermis
''Pristomyrmex'' is a genus of ants in the subfamily Myrmicinae. Distribution and habitat The genus is composed of 59 extant species restricted to the Old World tropics and a single extinct species, ''Pristomyrmex rasnitsyni'', described from Scandinavian amber. Its center of diversity is the Oriental region, though species are also known from the Australian rainforests, Africa, Mauritius and Réunion. Most of the species inhabit the rainforest, forage as predators or scavengers, and tend to nest in soil, leaf litter or rotten wood. Species *''Pristomyrmex acerosus'' Wang, 2003 *''Pristomyrmex africanus'' Karavaiev, 1931 *'' Pristomyrmex bicolor'' Emery, 1900 *''Pristomyrmex bispinosus'' (Donisthorpe, 1949) *''Pristomyrmex boltoni'' Wang, 2003 *''Pristomyrmex brevispinosus'' Emery, 1887 *''Pristomyrmex browni'' Wang, 2003 *''Pristomyrmex cebuensis'' Zettel, 2007 *''Pristomyrmex coggii'' Emery, 1897 *''Pristomyrmex collinus'' Wang, 2003 *''Pristomyrmex costatus'' Wang, 2003 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pristomyrmex Mandibularis
''Pristomyrmex'' is a genus of ants in the subfamily Myrmicinae. Distribution and habitat The genus is composed of 59 extant species restricted to the Old World tropics and a single extinct species, ''Pristomyrmex rasnitsyni'', described from Scandinavian amber. Its center of diversity is the Oriental region, though species are also known from the Australian rainforests, Africa, Mauritius and Réunion. Most of the species inhabit the rainforest, forage as predators or scavengers, and tend to nest in soil, leaf litter or rotten wood. Species *''Pristomyrmex acerosus'' Wang, 2003 *''Pristomyrmex africanus'' Karavaiev, 1931 *'' Pristomyrmex bicolor'' Emery, 1900 *''Pristomyrmex bispinosus'' (Donisthorpe, 1949) *''Pristomyrmex boltoni'' Wang, 2003 *''Pristomyrmex brevispinosus'' Emery, 1887 *''Pristomyrmex browni'' Wang, 2003 *''Pristomyrmex cebuensis'' Zettel, 2007 *''Pristomyrmex coggii'' Emery, 1897 *''Pristomyrmex collinus'' Wang, 2003 *''Pristomyrmex costatus'' Wang, 2003 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dermal Denticle
A fish scale is a small rigid plate that grows out of the skin of a fish. The skin of most jawed fishes is covered with these protective scales, which can also provide effective camouflage through the use of reflection and colouration, as well as possible hydrodynamic advantages. The term ''scale'' derives from the Old French , meaning a shell pod or husk. Scales vary enormously in size, shape, structure, and extent, ranging from strong and rigid armour plates in fishes such as shrimpfishes and boxfishes, to microscopic or absent in fishes such as eels and anglerfishes. The morphology of a scale can be used to identify the species of fish it came from. Scales originated within the jawless ostracoderms, ancestors to all jawed fishes today. Most bony fishes are covered with the cycloid scales of salmon and carp, or the ctenoid scales of perch, or the ganoid scales of sturgeons and gars. Cartilaginous fishes (sharks and rays) are covered with placoid scales. Some species ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propodeum
The propodeum or propodium is the first abdominal segment in Apocrita Hymenoptera (wasps, bees and ants). It is fused with the thorax to form the mesosoma. It is a single large sclerite, not subdivided, and bears a pair of spiracles. It is strongly constricted posteriorly to form the articulation of the petiole, and gives apocritans their distinctive shape. There may be a suture between the propodeum and the thorax, like in Symphyta Sawflies are the insects of the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay ... or not, and the presence or absence of such suture can aid in identifying specimens. In molluscs Propodium is the anterior (frontal) part of the foot of a mollusk. References Insect anatomy Gastropod anatomy {{insect-anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ant Colony
An ant colony is a population of a single ant species capable to maintain its complete lifecycle. Ant colonies are eusocial, communal, and efficiently organized and are very much like those found in other social Hymenoptera, though the various groups of these developed sociality independently through convergent evolution. The typical colony consists of one or more egg-laying queens, numerous sterile females (workers, soldiers) and, seasonally, many winged sexual males and females. In order to establish new colonies, ants undertake flights that occur at species-characteristic times of the day. Swarms of the winged sexuals (known as alates) depart the nest in search of other nests. The males die shortly thereafter, along with most of the females. A small percentage of the females survive to initiate new nests. Names The term "ant colony" refers to a population of workers, reproductive individuals, and brood that live together, cooperate, and treat one another non-aggressively. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen Ant
A queen ant (formally known as a gyne) is an adult, reproducing female ant in an ant colony; generally she will be the mother of all the other ants in that colony. Some female ants, such as the '' Cataglyphis'', do not need to mate to produce offspring, reproducing through asexual parthenogenesis or cloning, and all of those offspring will be female. Others, like those in the genus ''Crematogaster'', mate in a nuptial flight. Queen offspring ants develop from larvae specially fed in order to become sexually mature among most species. Depending on the species, there can be either a single mother queen, or potentially hundreds of fertile queens in some species. A queen of ''Lasius niger'' was held in captivity by German entomologist Hermann Appel for 28 years; also a ''Pogonomyrmex owyheei'' has a maximum estimated longevity of 30 years in the field. Life cycle Development Ants go through four stages of development: egg, larva, pupa (sometimes cocoon, called metamorphosis depending ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaster (insect Anatomy)
The gaster is the bulbous posterior portion of the metasoma found in hymenopterans of the suborder Apocrita ( bees, wasps and ants). This begins with abdominal segment III on most ants, but some make a constricted postpetiole out of segment III, in which case the gaster begins with abdominal segment IV. Certain ants in the genus '' Cataglyphis'', specifically ''Cataglyphis bicolor'' and ''Cataglyphis fortis'', have a cubiform petiole that allows them to decrease their inertia Inertia is the idea that an object will continue its current motion until some force causes its speed or direction to change. The term is properly understood as shorthand for "the principle of inertia" as described by Newton in his first law ... (and therefore increase their speed) by raising their gaster into an upright position. References Insect anatomy {{insect-anatomy-stub de:Gaster ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secondary Forest
A secondary forest (or second-growth forest) is a forest or woodland area which has re-grown after a timber harvest or clearing for agriculture, until a long enough period has passed so that the effects of the disturbance are no longer evident. It is distinguished from an old-growth forest (primary or primeval forest), which has not recently undergone such disruption, and complex early seral forest, as well as third-growth forests that result from harvest in second growth forests. Secondary forest regrowing after timber harvest differs from forest regrowing after natural disturbances such as fire, insect infestation, or windthrow because the dead trees remain to provide nutrients, structure, and water retention after natural disturbances. However, often after natural disturbance the timber is harvested and removed from the system, in which case the system more closely resembles secondary forest rather than seral forest. Description Depending on the forest, the development of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
