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10 Cards in this Set
- Front
- Back
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2 major evolutionary trends in courtship in salamanders |
-trend for female persuasion -trend for sperm transfer |
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3 categories of courtship |
-caudal capture -ventral capture and deposition of spermatophore -dorsal capture or no capture of female; deposition of spermatophore on substrate |
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Caudal Capture |
male captures female by wrapping his tail around her and directly transferring the spermatophore |
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ventral capture and deposition of spermatophore |
male captures female by embracing her with forelimbs, carries the female on his back, deposits spermatophore, then male twists body to make female fall onto the spermatophore |
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dorsal capture or no capture of female; deposition of spermatophore on substrate |
important species ID based on chemosensory ID |
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Taricha Courtship |
male clasps with both fore and hind limbs, rubs females snout with submandibular gland, then deposits spermatophore and female moves over it |
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Notopthalmus courthship |
Male touches the females cloaca with his snout and clasps her from above around the neck with his hind-limbs. He rubs her snout with the side of his face where genial glands are. Male leads female on a walk. She nudges his cloaca and he deposits a spermatophore which she pics up |
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Triturus courtship |
No capture, but lots of ornamentation and display. Tail whipping and tail fanning by male, he then leads her, brakes, turns sideways to stop her and she pics up the spermatophore |
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Ambystomatidae courtship |
-in water except (A. opacum) -approach and nudge, waltz where snout and cloacae are touching, female nudges his cloaca and he deposits his spermatophore |
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Plethodontidae courtship |
-all have a tail-straddling walk; unique to family -males have well developed mental glands, many have protruding teeth -males apply sexual stimulants and scratch her skin to get chemicals into the blood stream -on land, initial stages serve to identify sex and species, males try to get tail-straddling walk started by getting under female's head, walk can last up to an hour, while walking male slaps his mental gland on the female's snout, after spermatophore is deposited he moves his tail out of the way but keeps her head at the base of his tail and guides her onto the spermatophore |
