@article {498,
	title = {Polytrochal hypothesis of origin and evolution of trochophora type larvae},
	journal = {Zoologicheskii Zhurnal},
	volume = {72},
	number = {4},
	year = {1993},
	note = {ABST; HYPOTHESIS OF ORIGIN AND EVOL. OF TROCHOPHOA TYPE{\textquoteright}S LARVAE HITHERTO OFFERED HAVE BEEN ANALYZED AND CRITICALLY CONSIDERED: ATROCHAL, MONOTROCHAL, ENDOLARVA, AND GASTRONEURONE HYPOTHESES. IT IS SUPPOSED THAT THE DIRECT PREDECESSOR OF THE TROCHOPHORAL L. WAS ALREADY ENOUGH DEVELOPED TROCHOPHRA HAVING SEVERALY WEAKLY DIFFERENTIATED RINGS OF CILIA. THE ORIGINAL POLYTROCHAL CONCEPTION OF THE EVOL. OF TR. LARV. IS OFFERERD. ENDOLARV. ARE CONSIDERED AS STRONGLY MODIFIED TR. INDEP. ORIGINATED IN DIFFERENT GRPS. ATROCH. LARV. ARE THOUGHT TO BE FORMED AS A RESULT OF THE TRANSITION TO LECITHO. NUTRITION AND EMBRYONIZATION OF TR. STAGE, A CONSEQUENCE BEING SECONDARY SIMPLIFICATION OF CILIARY EQUIP. THE FORMATION OF PRIMARY SEGMENTATION OF ANNELIDS PROCEEDED ON THE BASE OF PRIMARY DIFFERENTIATION CILIARY APPARATUS OF POLYTROCHAL LARVAE AND THE ORGANS{\textquoteright} COMPLEX CONNECTED WITH IT. APPARENTLY LARVAE OF DEUTEROST. HAVE ALSO PASSED THRU A STAGE OF POLYTR. LARV. IN THEIR PHYLOGENY.},
	pages = {5-17},
	keywords = {evolution, trochophore},
	author = {Popkov, D. V.}
}
