Table 2. Components of the biochemical defense system of P. canaliculata eggs.

Perivitellin	Composition	Feature	Role in defense	Reference
Ovorubin	Glyco-lipo-caroteno protein	Red-coloured	Aposematic (warning coloration)	[12]; [26]; [27]; [30]; [66]
Ovorubin	Glyco-lipo-caroteno protein	Proteinase inhibitor	Antinutritive/antitrypsin	Present paper
PV3	Lipo-caroteno protein	Orange-coloured	Aposematic	[12]; [32]
PV2	Glyco- lipoprotein	Lethal to mice	Neurotoxic	[13]; [14]; [30]; [66]