Sperm competition: linking form to function

Table 1 Published relationships between sperm phenotypic traits and swimming speed.

Taxon	Morphological variable	Correlation with speed	Study
Mammals	Total length	+	[4, 8]
Red deer (Cervus elaphus hispanicus)	Head length	+	[9]
	Midpiece length	-
	Flagellum length	0
	Total length	0
Zebra finch (Taeniopygia guttata)	Midpiece length	0	[43]
	Flagellum length	0
	Tail length	0
Cichlid fish (Telmatochromis vittatus)	Total length	0	[45]
Atlantic salmon (Salmo salar)	Head length	0	[46]
	Flagellum length	0
	Total length	0
Bluegill sunfish (Lepomis macrochirus)	Total length	0	[44, 66]
	Flagellum length	0	[42]
Guppy (Poecilia reticulata)	Head length	+	[10]
	Flagellum length	0
	Relative flagellum length	0
Grass goby (Zosterisessor ophiocephalus)	Tail length	0	[67]
	Total length	0
Black goby (Gobius niger)	Tail length	0	[67]
	Total length	0
Land snail (Arianta arbustorum)	Total length	0	[47]

Key: +, positive correlation between length and speed; -, negative correlation between length and speed; and 0, correlation analysis performed, but no relationship between length and speed found.

ISSN: 2730-7182