I can thus only understand a fact with which I was much struck when examining cirripedes, and of which many other instances could be given: namely, that when a cirripede is parasitic within another and is thus protected, it loses more or less completely its own shell or carapace
. This is the case with the male Ibla, and in a truly extraordinary manner with the Proteolepas: for the carapace
in all other cirripedes consists of the three highly-important anterior segments of the head enormously developed, and furnished with great nerves and muscles; but in the parasitic and protected Proteolepas, the whole anterior part of the head is reduced to the merest rudiment attached to the bases of the prehensile antennae.
It is prohibited to capture individuals of both sexes with a carapace
width of < 6.0 cm, and there is an annual period in which the harvest of female crabs is prohibited in the States of North and Northeast.
The log transformed carapace
length-weight relationship for male form I (y = 3.3201x - 4.0205, [r.sup.2] = 0.9645, F = 1302.9, p = <0.001), and juveniles (y = 3.2792x - 4.0171, [r.sup.2] = 0.8721, F = 709.2, p = <0.001) showed positive allometric growth rates, whereas male form II (y = 2.8831x - 3.4474, [r.sup.2] = 0.8268, F = 248.2, p = <0.001) and female (y = 2.9184x - 3.5313, [r.sup.2] = 0.9395, F = 1879.3, p = <0.001) showed negative allometric rates of change with increasing length.
Sexual shape dimorphism in body shape changes was argued to have important ecological consequences and evolutionary trends  thus, was applied in this study on Perisesarma bidens, the most common mangrove crab inhabiting intertidal zone to high tide mark, This study will look into describing variations in carapace
shapes between the male and females sexes which may have important ecological consequences since the species is adapted to the sediment conditions, tidal fluctuations, and varying salinities found in the mangroves .
The genus has a strong association with grasses and displays several co-evolved, adaptive characteristics such as a very elongate abdomen, a flat carapace
, and light- to dark-brown longitudinal bands along the carapace
and abdomen, all of which aid crypsis in grasses.
The objectives of the present study was to isolate chitosan from indigenous fishery crustacean waste (shrimp head shell, crab leg shells, crab claw shells, and crab carapace
), to compare its physicochemical and functional characteristics.
Last May 11, an adult female green sea turtle with four gunshot wounds in her carapace
was rescued and released to the sea three days later.
width, <30 mm) and large (carapace
width, >30 mm) crabs were offered small (test width, <7 mm), medium (test width, 7-8.9 mm), large (test width, 9-10.9 mm), and extra large (test width, >11 mm) ivory barnacles.
With the exception of carapace
width, there were no significant differences found in hatchling mass or carapace
length among the two groups.
pelagicus (12-14 cm in external carapace
width) with heart beating stage was obtained from the coastal zone of Chonburi province, Thailand.
In fact, they are almost entirely enclosed by a carapace
, the anterior of which encloses their head, like a helmet.
Les hommes de Sandjak, qui sont revenus avec le point du nul de la [beaucoup moins que]cuisine[beaucoup plus grand que] du CRB oE cette fois-ci ils n'ont pas ete deplumes, ont ainsi garde plumes et duvet en faisant montre d'une bonne carapace
. Une carapace
qui, avant d'etre physique, l'a ete d'abord psychologique.