|Study of a population of Calcinus tubularis (Crustacea, Diogenidae) from a shallow Posidonia oceanica|
Manjón-Cabeza, M.E.; García Raso, J.E. (1995). Study of a population of Calcinus tubularis (Crustacea, Diogenidae) from a shallow Posidonia oceanica. Cah. Biol. Mar. 36(4): 277-284
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
|Authors|| || Top |
- Manjón-Cabeza, M.E.
- García Raso, J.E.
A population of the hermit crab Calcinus tubularis from a shallow Posidonia oceanica meadow in the SE of Spain has been studied. The results show a prevalence of small specimens, an egg-laying period extending from May to October (maximum in August), with a resting period during the winter months. The sex ratio is in favour of females during the spawning period. The first spawns occur in females with a cephalothoracic shield length of 0.7-0.9 mm. The mean number of eggs carried by a female is 30 and their mean size is 0.31 mm. The recruitment to the zone occurs from October to March (mainly in November-January). The relative growth is similar in both sexes, with no change between the juvenile and adult stages. The chelipeds show a slight sexual dimorphism. The ocular peduncles show a remarkably strong negative allometric growth.