Arthropod Struct Dev 2018 Jan 01;471:91-103. doi: 10.1016/j.asd.2017.11.003.

Larval development of the symbiotic pea crab Pinnaxodes chilensis (H. Milne Edwards, 1837) (Decapoda, Brachyura, Pinnotheridae) reared in laboratory.

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The complete larval development of Pinnaxodes chilensis (including four zoeal stages and a megalopa stage) is described and illustrated in detail for the first time. The descriptions are based on laboratory-reared larvae obtained from ovigerous females found inside specimens of the sea urchin Loxechinus albus collected in the coast of Valparaíso, Chile. In order to allow the correct differentiation of specimens from plankton samples, the larval stages of P. chilensis are compared with those from other Pinnotheridae species, whose larval development is known for the Chilean continental waters (Calyptraeotheres politus). The morphological characters described for P. chilensis larvae, as well as the comparison with the remaining larval development descriptions available for the genus Pinnaxodes, are used to discuss the heterogeneity within this genus.

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Genes referenced: etv1 LOC100887844