BIOL 1902 Lecture Notes - Lecture 22: Belostomatidae, Bluegill, Clasper

• School: Carleton University
• Department: Biology
• Course: BIOL 1902
• Professor: Michael Runtz

Document Summary

Lecture 22- parental care: o(cid:373)e a(cid:374)i(cid:373)als do(cid:374)"t gi(cid:448)e a(cid:374)y (cid:272)are. The (cid:271)est they do is fi(cid:374)d the right ha(cid:271)itat to lay their eggs. The temperature of the soil determines when they hatch and the sex. In the middle= both sexes: glo(cid:271)al (cid:449)ar(cid:373)i(cid:374)g (cid:373)ea(cid:374)s (cid:449)e"re o(cid:374)ly goi(cid:374)g to ha(cid:448)e fe(cid:373)ale turtles, most animals the sex is predetermined when they leave them, walking sticks= claspers for sex. They end up underground but are not placed there by the females. This is because the eggs look like elaiosomes and ants carry them for edible capitulum: northern water and garter snakes hold eggs internally until they hatch= ovociciparity. The you(cid:374)g that are (cid:862)(cid:271)or(cid:374)(cid:863) are (cid:374)ot guarded. Other females guard their eggs: five lined skink does it (the ones that lose their blue tails). Once they hat(cid:272)h they"re o(cid:374) their o(cid:449)(cid:374) though: female red backed salamanders guard eggs too. salamanders lay their eggs in water usually.