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The majority of gastropods have haemolymph containing the respiratory pigment haemocyanin. This is a copper-containing protein that helps to carry oxygen, and gives the haemolymph a pale blue colour. In the freshwater Planorbid snails, however, the haemocyanin is replaced by haemoglobin , and thus their haemolymph is red rather than blue.
Hemolymph, or haemolymph, is a fluid, analogous to the blood in vertebrates, that circulates in the interior of the arthropod (invertebrate) body, ...
The nephridium projects into the main venous sinus in the animal's foot. The circulatory fluid of gastropods, known as haemolymph directly bathes the tissues, where it supplies them with oxygen and absorbs carbon dioxide and nitrogenous waste, a necessary waste product of metabolism. From the arterial sinuses bathing the tissues, it drains into ...
The genome length is estimated as about 929,10 Mb (millions of base pairs; 0.95 ± 0.01 pg), [18] [19] which is a small genome size among gastropods. [20] Sequencing of the whole genome was approved as a priority by National Human Genome Research Institute in August 2004, [ 21 ] Its participants also included the " Biomphalaria glabrata Genome ...
This is a list of maximum recorded animal lifespans in captivity.Only animals from the classes of the Chordata phylum are included. [1] On average, captive animals (especially mammals) live longer than wild animals.
Mature snails lay eggs during the whole life span, primarily immediately after the main rainfall. [4] Snails 8 weeks old, whose shell is about 8 mm in height, are mature and can lay eggs. [4] However they require more than 12 months of life and 1-2 aestivation periods in order to reach their full size. [4] This species is an intermediate host for:
For the terms used in this section, see gastropod shell. The shells vary from light brown to dark brown, and the height of an adult shell ranges from 45 to 60 millimeters. Rarely, snails with a 70 mm shell can be found. The width of an adult shell ranges from 20 to 30 mm. The shell has 4.5 to 6 weakly convex whorls.
Juliidae, common name the bivalved gastropods, is a family of small sea snails, marine gastropod mollusks or micromollusks in the superfamily Oxynooidea, an opisthobranch group. [ 2 ] These are sacoglossan (sap-sucking) sea snails, and many of them are green in color.