@article {696,
	title = {Are there true cosmopolitan sipunculan worms? A genetic variation study within Phascolosoma perlucens (Sipuncula, Phascolosomatidae)},
	journal = {Marine Biology},
	volume = {157},
	number = {7},
	year = {2010},
	note = {Times Cited: 0Kawauchi, Gisele Y. Giribet, Gonzalo},
	month = {Jul},
	pages = {1417-1431},
	abstract = {Phascolosoma perlucens is one of the most common intertidal sipunculan species and has been considered a circumtropical cosmopolitan taxon due to the presence of a long-lived larva. To verify whether P. perlucens is a true cosmopolitan species or a complex of cryptic forms, we examined the population structure and demographics of 56 putative P. perlucens individuals from 13 localities throughout the tropics. Analysis of two mitochondrial markers, cytochrome c oxidase subunit I and 16S rRNA, suggests high levels of genetic differentiation between distantly located populations of P. perlucens. At least four different lineages identified morphologically as P. perlucens were distinguished. These lineages are likewise supported by phylogenetic analysis of the two mitochondrial markers and by the haplotype network analysis. Our results suggest that P. perlucens is a case of overconservative taxonomy, rejecting the alleged cosmopolitanism of P. perlucens. However, cryptic speciation also exists in some areas, including a possible case of geminate species across the Isthmus of Panama.},
	keywords = {DNA-SEQUENCE DATA, LIFE HISTORIES, MITOCHONDRIAL-DNA, NEUTRALITY TESTS, PHYLOGENETIC-RELATIONSHIPS, PHYLOGEOGRAPHY, POPULATION-STRUCTURE, SEA, SPECIES-COMPLEX, SYSTEMATICS},
	isbn = {0025-3162},
	url = {<Go to ISI>://000278837600001},
	author = {Kawauchi, G. Y. and Giribet, G.}
}
@article {115,
	title = {Reproductive cycle of <i>Golfingia margaritacea</i>, a bipolar sipunculan, in subantarctic water},
	journal = {Marine Biology},
	volume = {117},
	year = {1993},
	note = {ABST; THE REP. CYCLE OF THE BIPOLAR SIP. G.M. COLLECTED FROM USHUAIA, ARGENTINA (5449S, 6813W) IN 1986 \& 1987 IS RECORDED. THE POPULATION SAMPLED SHOWED A SEX RATIO OF 1:1. MALES HOWEVER, FREQUENTLY OUTNUMBERED FEMALES. MEASUREMENTS OF COELOMIC OOCYTES DELINEATED AN ANNUAL REP. CYC. SMALL OOCYTES WERE PRESENT IN THE COELOM ALL YEAR: A SUB-POP. BEGAN TO INCREASE SIZE ABOUT THE MIDDLE OF SPRING AND REACHED ITS MAXIMUM SIZE IN LATE SUMMER. SPAWNS MAY OCCUR FROM THE END OF FEB. > APRIL. MAY IS CHARACTERIZED BY RESORPTION OF LARGE OOCYTES. MONTHLY MONITORING OF GONADS REVEALED MITOTIC ACTIVITY AND A CONTINUOUS RELEASE OF GAMETOCYTES TO THE COELOM. PARASITES WERE DETECTED IN THE GONADS. LARGE COELOMIC OOCYTES WERE ALSO PRESENT IN THE COELOM DURING THE SAME SEASON IN THE NORTHERN AND SOUTHERN HEMISPHERES, BUT THE EGG SIZES WERE SIGNIFICANTLY LARGER IN BOREAL POPS. *55\% MALE - IN TEXT;},
	pages = {409-414},
	keywords = {gametogenesis, reproductive cycle},
	author = {Amor, A.}
}
@article {116,
	title = {Reproductive cycle of <i>Golfingia margaritacea</i>, a bipolar sipunculan, in subantarctic water},
	journal = {Marine Biology},
	volume = {117},
	year = {1993},
	pages = {409-414},
	author = {Amor, A.}
}
