Reproductive biology of the crab Munida subrugosa (Decapoda: Anomura: Galatheidae) in the Beagle Channel, Argentina
نویسندگان
چکیده
Munida subrugosawas sampled monthly from November 1997 to November 1999 in the Beagle Channel by means of an epibenthic trawl. The reproductive cycle started in May, re£ected by the occurrence of ovigerous females. Maximum size of oocytes, maximum value of gonadosomatic index in females (16.8 gmmcarapace length [CL]71) and males (1.6 gmmCL71), and the proportion ( 70%) of ovigerous females with full egg-clutches occurred in June. Since the proportion of ovigerous females in October was 5% and the planktonic larvae reportedly hatch in September, the embryonic development lasted 90^ 120 days. Females and males attained physiological maturity at 9.9 and 8.0mmCL respectively, and males reached morphometric maturity at 24.4mmCL. Fecundity was correlated with female size (r1⁄40.85) and was between 124 and 10,750 eggs per female. Average diameter of recently extruded eggs was 0.69mm (SD 0.06mm). At the beginning of the reproductive cycle, ovigerous females had partial broods of 300 eggs, which represented 55% of complete clutch.
منابع مشابه
Feeding ecology of the crab Munida subrugosa (Decapoda: Anomura: Galatheidae) in the Beagle Channel, Argentina
Munida subrugosa is the most abundant galatheid crab species in the Beagle Channel (558S 688W) o¡ Tierra del Fuego, Argentina. Samples of crabs and the epibenthic community were taken on a monthly basis at two di¡erent depth strata (540m and 470m), by means of epibenthic trawling from 1998 to 1999. Stomach contents from 1582 crabs were analysed, out of which only 2% had empty stomachs. The quan...
متن کاملPhylogenetic relationships within the Pylochelidae (Decapoda: Anomura: Paguroidea): A cladistic analysis based on morphological characters
Phylogenetic relationships within the “symmetrical” hermit crab family Pylochelidae were analyzed for 41 of the 45 species and subspecies currently considered valid. In the analyses, 78 morphological characters comprised the data matrix and the outgroup consisted of Thalassina anomala, a member of the Thalassinidae, and Munida quadrispina, a member of the Galatheidae. A poorly resolved strict c...
متن کاملGalatheoid squat lobsters (Crustacea: Decapoda: Anomura) from Korean waters
Ten species of Galatheoidea (squat lobsters), belonging to two families, were collected in the Korean exclusive economic zone: Galathea balssi Miyake and Baba, 1964, Galathea orientalis Stimpson, 1858, Galathea pubescens Stimpson, 1858, and Galathea rubromaculata Miyake and Baba, 1967 belonging to Galatheidae; Bathymunida brevirostris Yokoya, 1933, Cervimunida princeps Benedict, 1902, Munida ca...
متن کاملShort Communication:A subtidal porcellanid crab, Petrolisthes militaris (Heller, 1862) (Crustacea: Decapoda: Anomura), from the Persian Gulf, Iran
متن کامل
A new species of deep-sea squat lobster of the genus Munida Leach, 1820 (Crustacea: Decapoda: Anomura: Munididae) from a hydrothermal field in the southwestern Indian Ocean.
A new species of the genus Munida Leach, 1820, is described and illustrated based on a single specimen from the deep-sea hydrothermal area in the southwestern Indian Ocean. Munida manqingae sp. nov. closely resembles M. tiresias Macpherson 1994, but differs in the morphology of the carapace, basal segment of the antennular peduncles, first segment of the antennal peduncle.
متن کامل