Biology, Phylogeny, and Ecology of the Stomatopoda

Stomatopods, often known as mantis prawn, are an historical group of marine arthropods that belong to the students Stomatopoda. There are approximately 350 species of stomatopods that have been learned to date, varying in size via 1 to 30 cm. (Caldwell 1975) Stomatopods can be a group of crustaceans that belong to the class Malacostraca, along with familiar crustaceans such as crabs, lobsters, and shrimp. The malacostracans are defined by way of a unique bauplan, which includes a segmented physique divided into 3 distinct tagmata: the head, torso, and belly. All living stomatopods will be represented by four households: Squillidae, Lysiosquillidae, Gonodactylidae, and Bathysquillidae. (Caldwell 1975)

A typical stomatopod, Pseudosquilla ciliata

The top of the mantis shrimp is usually divided into your five segments, every associated with a set of appendages. Two pairs of antennae, the first of which is biramous, the other uniramous, make up the first two pairs of appendages. Both equally pairs of antennae are used for sensory functions. Behind the antennae a large pair of mandibles, a pair of maxillulae, and a couple of maxillae. (Haug et approach. 2012) The mandibles bring crushing food, and the two maxillulae and the maxillae prefer taste and manipulate foodstuff. The head as well bears a pair of very intricate compound eyes, each that may contain up to 10 thousand ommatidia.

The thorax of stomatopods consists of eight body sections, which are as well associated with their particular pair of appendages. As in the majority of crustaceans, your head and the chest are joined and function being a single unit called the cephalothorax. (Srour 2011) A tough carapace covers most of the cephalothorax, with the exception of the very last three thoracic segments. The first 5 segments with the thorax require their own pair of maxillipeds. The mantis shrimp is quite famously reputed for its increased second maxilliped, a highly created raptorial get that is used to get killing prey. The get very much appears like that of a praying mantis, hence the name mantis shrimp. All of those other maxillipeds happen to be finger-like appendages that are used to grasp objects, deliver food to the mouth, and dig burrows. Behind the maxillipeds there are three pairs of pereopods, or jogging legs. (Ahyong and Lowry 2001)

The abdomen is made up of 6 physique segments. The first your five segments each have a pair of pleopods, which are biramous, flap-like appendages that are used to get swimming. The gills will be leaf-like and therefore are carried on the outer branch of the pleopods. (Ahyong and Lowry 2001) The past segment contains a pair of squashed appendages referred to as uropods which have been modified intended for swimming, as well as the telson, which can be an extension with the last body segment that is certainly covered with extremely hard battle suits and spines, developed intended for defensive purposes. The telson and the uropods together from the tail enthusiast. (Ahyong and Lowry 2001)

Stomatopods allow us a number of one of a kind defining features. One of their most renowned features is their particular highly advanced pair of chemical substance eyes. Mantis shrimp are believed to have the the majority of complex visual being in the dog kingdom. The range of light that is certainly visible to humans consists of three hues (red, green, and green), because our eyes just have three different photoreceptors to get detecting lumination. Our vision is better than regarding dogs since they only have two diverse photoreceptors (blue and green), but not as good as birds, that have four (red, blue, green, and ultraviolet). The eye from the mantis shrimp, however , contains 16 distinct photoreceptors. (Srour 2011) That they see a lot more colors than we carry out, as well as ULTRAVIOLET, infrared, and polarized lumination. Stomatopods are the only well-known animals able to detect circularly polarized light. It has been advised that this potential allows them to communicate through reflections of circularly polarized light, as well as to enhance compare in turbid environments. (Chiou et...

References: 1 . Caldwell, Roy M. 1975. Ecology and Advancement of Hesitant behavior in Stomatopods. Naturwissenschaften 62: 214-222

This is a write-up on stomatopods taken from a scientific diary