Oxygen thief book summary

oxygen thief book summary

Diary Of An, oxygen, thief (The, oxygen, thief

37 Thomas Hale Streets discussed the behaviour in 1877, doubting that the animal would climb trees to get at the coconuts. S, holger Rumpf was able to confirm Streets' report, observing and studying how they open coconuts in the wild. 37 The animal has developed a special technique to do so; if the coconut is still covered with husk, it will use its claws to rip off strips, always starting from the side with the three germination pores, the group of three small circles found. Once the pores are visible, the coconut crab bangs its pincers on one of them until it breaks. Afterwards, it turns around and uses the smaller pincers on its other legs to pull out the white flesh of the coconut. Using their strong claws, larger individuals can even break the hard coconut into smaller pieces for easier consumption. 43 Habitat edit coconut crabs vary in size and coloring.

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These are close to the eastern limit of its range, as are the line Islands of Kiribati, where the coconut crab is especially frequent on Teraina (Washington Island with its abundant coconut palm forest. 35 The gambier Islands marks the species' eastern limit. 29 Ecology edit diet edit a coconut crab atop a coconut The diet of coconut crabs consists primarily of fleshy fruits (particularly Ochrosia ackeringae, arenga listeri, pandanus elatus,. Christmatensis nuts ( Aleurites moluccanus drupes ( Cocos nucifera and seeds ( Annona reticulata 36 and the pith of fallen trees. 37 However, as they are omnivores, they will consume other organic materials such as tortoise hatchlings and dead solutions animals. 11 38 They have been observed to prey upon crabs such as Gecarcoidea natalis and Discoplax hirtipes, as well as scavenge on the carcasses of other coconut crabs. 36 During a tagging experiment, one coconut crab was observed killing and eating a polynesian rat ( Rattus exulans ). 39 In 2016, a large coconut crab was observed climbing a tree to disable and consume a red-footed booby on the Chagos Archipelago. 40 The coconut crab can take a coconut from the ground and cut it to a husk nut, take it with its claw, climb up a tree 10 m (33 ft) high and drop the husk nut, to access the coconut flesh inside. 41 They often descend from the trees by falling, and can survive a fall of at least.5 m (15 ft) unhurt. 42 Coconut crabs cut holes into coconuts with their strong claws and eat the contents, although it can take several days before the coconut is opened.

6 As they cannot swim as adults, coconut crabs listing must have colonised the islands as planktonic larvae. 30 Christmas Island in the Indian Ocean has the largest and densest population of coconut crabs in the world, 18 although it is outnumbered there by more than 50 times by the Christmas Island red crab, gecarcoidea natalis. 31 Other Indian Ocean populations exist on the seychelles, including Aldabra and Cosmoledo, 32 but the coconut crab is extinct on the central islands. 33 Coconut crabs occur on several of the Andaman and Nicobar Islands in the bay of Bengal. They occur on most of the islands, and the northern atolls, of the Chagos Archipelago. 34 In the pacific, the coconut crab's range became known gradually. Charles Darwin believed it was only found on "a single coral island north of the society group ". 35 The coconut crab is far more widespread, though it is not abundant on every pacific island it inhabits. 35 Large populations exist on the cook islands, especially pukapuka, suwarrow, mangaia, takutea, mauke, atiu, and Palmerston Island.

oxygen thief book summary

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Young coconut crabs that cannot find a seashell of the with right size often use broken coconut pieces. When they outgrow their shells, they develop a hardened abdomen. The coconut crab reaches sexual maturity around 5 years after hatching. 23 They reach their maximum size only after 40 to 60 years. 11 Distribution edit coconut crabs live in the Indian Ocean and night the central Pacific Ocean, with a distribution that closely matches that of the coconut palm. 28 The western limit of the range. Latro is Zanzibar, off the coast of Tanzania, 29 while the tropics of Cancer and Capricorn mark the northern and southern limits, respectively, with very few population in the subtropics, such as the ryukyu islands. 6 Some evidence indicates the coconut crab once lived on the mainlands of Australia and Madagascar and on the island of mauritius, but it no longer occurs in any of these places.

25 The empty egg cases remain on the female's body after the larvae have been released, and the female eats the egg cases within a few days. 25 The larvae float in the pelagic zone of the ocean with other plankton for 34 weeks, 6 during which a large number of them are eaten by predators. The larvae pass through three to five zoea stages before moulting into the postlarval glaucothoe stage; this process takes from 25 to 33 days. 26 Upon reaching the glaucothoe stage of development, they settle to the bottom, find and wear a suitably sized gastropod shell, and migrate to the shoreline with other terrestrial hermit crabs. 27 At that time, they sometimes visit dry land. Afterwards, they leave the ocean permanently and lose the ability to breathe in water. As with all hermit crabs, they change their shells as they grow.

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oxygen thief book summary

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18 While insects and the coconut crab originate from different paths, the same need to detect smells in the air led to the development of remarkably similar organs. Coconut crabs flick their antennae as insects do to enhance their reception. Their sense of smell can detect interesting odours over large distances. The smells of rotting meat, bananas, and coconuts, all potential food sources, catch their attention especially. 19 The olfactory system in the coconut crab's brain is well-developed compared to other areas of the brain.

20 Lifecycle edit coconut crabs mate frequently and quickly on dry land in the period from may to september, especially between early june and late august. 21 Males have spermatophores and deposit a mass of spermatophores on the abdomens of the females; 22 the abdomen opens at the base of the third pereiopods, and fertilisation is thought to occur on the external surface of the abdomen as the eggs pass through. 23 The extrusion of eggs occurs on land in crevices or burrows near the shore. 24 Shortly thereafter, the female lays her eggs and glues them to the underside of her abdomen, carrying the fertilised eggs underneath her body for a few months. At the time of hatching, the female coconut crab releases the eggs into the ocean. 23 This usually takes place on rocky shores at dusk, ramanujam especially when this coincides with high tide.

This organ can be interpreted as a developmental stage between gills and lungs, and is one of the most significant adaptations of the coconut crab to its habitat. 15 The branchiostegal lung contains a tissue similar to that found in gills, but suited to the absorption of oxygen from air, rather than water. This organ is expanded laterally and is evaginated to increase the surface area; 11 located in the cephalothorax, it is optimally placed to reduce both the blood/gas diffusion distance and the return distance of oxygenated blood to the pericardium. 16 Coconut crabs use their hindmost, smallest pair of legs to clean these breathing organs and to moisten them with water. The organs require water to properly function, and the coconut crab provides this by stroking its wet legs over the spongy tissues nearby. Coconut crabs may drink water from small puddles by transferring it from their chelipeds to their maxillipeds.

17 In addition to the branchiostegal lung, the coconut crab has an additional rudimentary set of gills. Although these gills are comparable in number to aquatic species from the families Paguridae and diogenidae, they are reduced in size and have comparatively less surface area. 16 Sense of smell edit The coconut crab has a well-developed sense of smell, which it uses to locate its food. 18 The process of smelling works very differently depending on whether the smelled molecules are hydrophilic molecules in water or hydrophobic molecules in air. As most crabs live in the water, they have specialised organs called aesthetascs on their antennae to determine both the concentration and the direction of a smell. However, as coconut crabs live on the land, the aesthetascs on their antennae are shorter and blunter than those of other crabs and look more like those of insects.

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13 like most true crabs,. . latro bends its tail underneath its body for protection. 10 The hardened abdomen protects the coconut crab and reduces water loss on land, but must be moulted periodically. Adults moult annually, and dig a burrow up to 1 m (3 ft 3 in) long in which to hide while vulnerable. 11 It remains in the burrow for 3 to 16 weeks, depending on the size of the animal. 11 After moulting, 1 to 3 weeks are needed for the exoskeleton to harden, depending on the animal's size, during which time the animal's body is soft and vulnerable, and it stays hidden for protection. 14 Respiration edit pdf Print of a coconut crab from the dictionnaire d'Histoire naturelle of 1849 Except as larvae, coconut crabs cannot swim, and drown if left in water for more than an hour. 10 They use a special organ called a branchiostegal lung to breathe.

oxygen thief book summary

The front-most pair of legs has large chelae (claws with the left being larger essay than the right. 10 The next two pairs, as with other hermit crabs, are large, powerful walking legs with pointed tips, which allow coconut crabs to climb vertical or overhanging surfaces. 11 The fourth pair of legs is smaller with tweezer -like chelae at the end, allowing young coconut crabs to grip the inside of a shell or coconut husk to carry for protection; adults use this pair for walking and climbing. The last pair of legs is very small and is used by females to tend their eggs, and by the males in mating. 10 This last pair of legs is usually held inside the carapace, in the cavity containing the breathing organs. Some difference in color occurs between the animals found on different islands, ranging from orange-red to purplish blue; 12 in most regions, blue is the predominant color, but in some places, including the seychelles, most individuals are red. Latro is a derived type of hermit crab, only the juveniles use salvaged snail shells to protect their soft abdomens, and adolescents sometimes use broken coconut shells for that purpose. Unlike other hermit crabs, the adult coconut crabs do not carry shells, but instead harden their abdominal terga by depositing chitin and chalk. Not being constrained by the physical confines of living in a shell allows this species to grow much larger than other hermit crabs in the family coenobitidae.

sea floor, entering a gastropod shell and returning to dry land. Sexual maturity is reached after about 5 years, and the total lifespan may be over 60 years. In the 34 weeks that the larvae remain in the sea, their chance of reaching another suitable location is enhanced if they find a floating life support system. Floating logs or rafts of storm-struck vegetation likely would be suitable, although rather chancy and definitely seasonal. In contrast, floating coconuts can be a very significant part of the crab's dispersal options. 4 Contents Description edit. Latro is the largest terrestrial arthropod, and indeed terrestrial invertebrate, in the world; 5 6 reports about its size vary, but most sources give a body length up to 40 cm (16 in 7 a weight up.1 kg (9.0 lb and a leg span more than.91. 9 The carapace may reach a length of 78 mm (3.1 in and a width up to 200 mm (7.9 in). 6 The body of the coconut crab is, like that of all decapods, divided into a front section ( cephalothorax which has 10 legs, and an abdomen.

Like other hermit crabs, juvenile coconut crabs use empty gastropod shells for protection, but the adults develop a tough exoskeleton on their abdomens and stop carrying a shell. Coconut crabs have organs known as branchiostegal lungs, which are used instead of london the vestigial gills for breathing, and they will drown if immersed in water for long. They have an acute sense of smell, which has developed convergently with that of insects, and which they use to find potential food sources. Adult coconut crabs feed primarily on fruits, nuts, seeds, and the pith of fallen trees, but they will eat carrion and other organic matter opportunistically. Anything left unattended on the ground is a potential source of food, which they will investigate and may carry away - thereby getting the alternative name of "robber crab". The species is popularly associated with the coconut palm, yet coconuts are not a significant part of its diet. Although it lives in a burrow, the crab has been filmed climbing coconut and pandanus trees. No film shows a crab selectively picking coconut fruit, though they might dislodge ripe fruit that otherwise would fall naturally. Climbing is an immediate escape route (if too far from the burrow) to avoid predation (when young) by large sea birds, or cannibalism (at any age) by bigger, older crabs.

Smashwords diary Of An, oxygen, thief (The, oxygen, thief

The coconut crab birgus latro ) is a species of terrestrial hermit crab, also known as the robber crab or palm thief. It is the largest land-living arthropod in the world, and is probably at the upper size limit for terrestrial animals with exoskeletons in recent times, with a weight up.1 kg (9.0 lb). It can grow to reviews up to 1 m (3 ft 3 in) in length from leg to leg. It is found. Indonesia, islands across the, indian Ocean, and parts of the, pacific Ocean as far east as the. Gambier Islands, mirroring the distribution of the coconut palm ; it has been extirpated from most areas with a significant human population, including mainland. The coconut crab is the only species of the genus, birgus, and is related to the terrestrial hermit crabs of the genus. It shows a number of adaptations to life on land.

Oxygen thief book summary
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