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Evolutionary loss of sexual traits may occur if the forces that maintain those traits weaken or disappear. Females may evolve resistance or a change in preference if the male sexual trait decreases their fitness (e.g., coercive or deceptive traits). In nuptial gift-giving spiders, males offer a food gift wrapped in silk during courtship, taking adv...
In the spider families Trechaleidae and Pisauridae, males offer nuptial gifts to females during courtship. Nutritive gifts contain recently caught prey wrapped in silk, while worthless gifts contain prey leftovers or plant parts. The presence of wrapped gifts is known in three out of 16 genera (Paratrechalea Carico, 2005, Trechalea Thorell, 1869 an...
In the spider families Trechaleidae and Pisauridae, males offer nuptial gifts to females during courtship. Nutritive gifts contain recently caught prey wrapped in silk, while worthless gifts contain prey leftovers or plant parts. The presence of wrapped gifts is known in three out of 16 genera (Paratrechalea Carico, 2005, Trechalea Thorell, 1869 an...
In the gift-giving spider Paratrechalea ornata, females mate multiple times and apparently may bias the paternity according to the nuptial gift content (nutritive or worthless). Paternity studies using microsatellite markers would, therefore, be ideal for studying male fertilization success for female offspring. We genotyped four microsatellites pr...
