|Seasonality in the reproductive biology of a shelf-dwelling galatheid (Crustacea: Decapoda): an example from a western Mediterranean population of Munida iris rutllanti|
Sanz-Brau, A.; Mezquita, F.; Sanz, S. (1998). Seasonality in the reproductive biology of a shelf-dwelling galatheid (Crustacea: Decapoda): an example from a western Mediterranean population of Munida iris rutllanti. Cah. Biol. Mar. 39(2): 185-195
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
|Authors|| || Top |
- Sanz-Brau, A.
- Mezquita, F.
- Sanz, S.
A glance at the literature is enough to establish that seasonality of the reproductive features is not a general trend among galatheid decapods. The most important factor determining population dynamics is the depth at which each species dwells. A program was carried out to study the reproductive biology of the shelf-dwelling Munida iris rutllanti using all the captures landed by commercial trawlers in the Valencia Harbour area (W. Mediterranean, Spain). The program lasted from February 1986 to October 1987, during which time 5116 specimens were collected. The following biological features were recorded: size of individuals, percentage of ovigerous females and sex ratio. All this information was then analysed using a number of statistical approaches, including time-series analyses. Most of these features greatly varied with time, indicating that the reproductive dynamics of this population is seasonal in nature. These conclusions are supported by an analysis of the seasonal changes in size-class frequencies. The relationships between variables are outlined, allowing us to draw inferences regarding other populational traits, such as time of recruitment or life span.