2023-07-15 15:41:25
Introduction
Red lobster Classification Kingdom Animalia Phylum Arthropoda Sous-embr. Crustacea Class Malacostraca Order Decapoda Family Palinuridae Genus Palinurus Binomial name (In taxonomy (botany, zoology, etc.), the binomial name, or binomial, comes from…) Palinurus elephas
(Fabricius, 1787) Synonyms Palinurus vulgaris
Palinurus four-horned
The red lobster, or common lobster, is the vernacular name attributed to the species (In life sciences, the species (from the Latin species, “type”) Palinurus elephas Fabricius (1787), also known under the names of P. vulgaris Latreille (1803) and P. quadricornis Grube (1861).
Identification
Red lobster (The color red responds to different definitions, depending on the chromatic system of which one makes…) at the aquarium of Rhodes (Rhodes (in ancient Greek Ῥόδος / Rhódos, modern…)
This large crustacean (Crustaceans (Crustacea) are arthropods, that is to say animals whose body…), devoid of claws, measures up to 50 cm and weighs up to 4 kg.
The body, segmented, is covered with a carapace (The carapace is a dorsal section of an exoskeleton.) chitinous, reddish to brownish, with two yellowish spots on each abdominal segment. The legs and the antennae are striped with brown and yellow (There are (at least) five definitions of yellow which designate roughly the same one…).
The head is covered with strong spines and bears two faceted compound eyes protected by two triangular frontal horns, two small antennae (antennules), two antennae directed backwards and longer than the body, two grinding mandibles and four bladed jaws sharp.
The thorax (The thorax is an anatomical region of certain vertebrate animals or arthropods.) carries three pairs of legs-jaws — one of which serves for the ingestion of food and the maintenance of a water current (L’ Water is a ubiquitous chemical compound on Earth, essential for all respiratory …) — and five pairs of locomotor legs. Breathing (In everyday language, breathing designates both gas exchange (rejection…) is done by gills housed in the branchiostegites.
The abdomen (The abdomen designates a part of the human body or the body of an animal.) carries six pairs of biramous appendages (pleopods) of which the first two constitute a criterion of sexual dimorphism.
Habitat
The lobster is a demersal species that frequents rocky substrates, sometimes sandy bottoms, between 10 and 80 m deep, sometimes up to 150 m. It takes shelter in the crevices and often only lets its antennae stick out.
Geographical distribution
The species is widespread in the northeast (The northeast is the direction halfway between the cardinal points north and east. The northeast…) of the Atlantic, from the rocky coasts of Ireland to on the African coasts, as well as in the Mediterranean.
Development and reproduction
Like all crustaceans and other arthropods, the lobster undergoes numerous moults as it grows (Fur is a small Danish island in the Limfjord. Fur has around 900 inhabitants. . The island…) and as it grows, to renew its shell (exoskeleton).
Sexual maturity is reached more or less rapidly, depending on the latitude: in the Mediterranean, from 20 cm in length (The length of an object is the distance between its two furthest extremities…) (4 to 5 years) but not before 35 cm in the North Atlantic (North is a cardinal point, opposite to south.). Mating takes place in summer. Soon after, the females lay between 13,000 and 140,000 eggs, depending on their size. Fertilization (Fertilization, for organized living beings, is the stage of reproduction…) is external. During incubation (Incubation is the period during which the eggs are brooded, so as to maintain them…), the duration of which decreases with the temperature (The temperature is a physical quantity measured using a thermometer and…) water, i.e. between 5 and 9 months (The month (From lat. mensis “month”, and formerly in plural. “menses”) is a period of time…), eggs remain attached to the female’s abdominal appendages (In biology, female (from the Latin “femella”, little woman, young woman) is the…). Hatching takes place at the beginning of the year (A year is a unit of time expressing the duration between two occurrences of a related event…) and is spread over a few days (The day or day is the interval that separates sunrise from sunset; that is…). The pelagic, flat and transparent larvae – the phyllosomas – measure 1 to 2 cm and are part of the plankton (Homer designated animals wandering on the surface of the waves by plankton, from the Greek…). Larval development up to the stage (A stage (from the ancient Greek στ?διον stadion, from the verb…) puerulus (larvae with long antennae) lasts at least 5 months. The larvae drop to the bottom and undergo a metamorphosis into juveniles, which undergo several more moults before becoming adults.
The lobster does not reach 500 g before 5 (male) or 6 (female) years. Its longevity (The longevity of a living being is the lifespan for which it is…) is important.
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