Bonellia

Bonellia

 

a genus of invertebrate animals of the class Echiuroidea of the subkingdom Articulata. There are several species, none of which are found in the waters of the USSR. The members of the species B. viridis have a sharply expressed sexual dimorphism. The body of the female is cylindrical (up to 7 cm long), and it has a long proboscis, divided into two parts at the end, which serves to grip soil along with bits of food (vegetable remains). A special pigment gives it a green color, which is protective. The body of the male is not more than 1–3 mm long and has a very simple structure. It lives as a parasite in the sexual ducts of the female; this fact was first discovered by the Russian scientist A. O. Kovalevskii in 1870. The species B. viridis is widely distributed in the coastal region of the Mediterranean Sea and in the Atlantic Ocean near the coast of Europe. It lives in shallow waters in the hollows formed in stones.

References in periodicals archive ?
Epidermal cells containing green pigment are also found in the larvae of numerous echiurids, including both planktotrophs and lecithotrophs (e.g., Bonellia viridis: Agius and Jaccarini, 1981; Urechis uncinatus: Kazama et al, 2005; Thalassema mellita: Conn, 1886; Torrey, 1903).
Some aspects of the Echiuran worm Bonellia Viridis and associated fauna.
Plant species include Plumeria rubra (Apocynaceae); Bursera simaruba (Burseraceae); Nopalea guatemalensis, Opuntia decumbens, Pilocereus leucocephalus, Stenocereus pruinosus, Stenocereus eichlami (Cactaceae); Acacia picachensis, Leucaena collinsii, Lysiloma divaricatum, Mimosa platycarpa (Mimosaceae); Swietenia humilis (Meliaceae); Ximenia americana (Olacaceae); Bonellia macrocarpa (Theophrastaceae); and Karwinskia calderonii (Rhamnaceae).
En los BOES la altura de los arboles es mayor que en los MAES y algunas plantas que son arbustivas en estos ultimos aparecen como arboles en los BOES (por ejemplo: Erythrina flabelliformis, Haematoxylum brasiletto y Bonellia macrocarpa ssp.
Bonellia macrocarpa, Haematoxylum campechianum, Zygia cognata, etc.), estos bosques poseen diferentes especies dominantes (e.
Novel aspects of the nervous system of Bonellia viridis (Echiura) revealed by the combination of immunohistnehemis-try.
We also compare the occurrence of dwarf males in Osedax with other animals (Ghiselin, 1974; Vollrath, 1998), particularly with the annelid echiuran Bonellia, which is known to have environmentally determined sex (Agius, 1979).
Sur un noveau type de symbiose chez la Bonellie (Bonellia viridis, Echiurien).
Evidence for predetermination is seen in Bonellia viridis.