Chaoborus-induced defense morph formation in D. pulex. Chaoborus-induced defense morph formation in D. pulex. (A) A normal first-instar juvenile of Daphnia pulex (magnified view of occipital region: right). (B) A first-instar juvenile bearing neckteeth (magnified view of neckteeth: right). (C) A second-instar juvenile bearing larger neckteeth with two spines. (D) Schematic diagram of the developmental events in the process of the defense morph formation in D. pulex (based on ).
Miyakawa et al. BMC Developmental Biology 2010 10:45 doi:10.1186/1471-213X-10-45