An intimidating ornament in a female pipefish Adult speeddate xxx

Many are very weak swimmers in open water, moving slowly by means of rapid movements of the dorsal fin.Some species of pipefish have prehensile tails, as in seahorses.Due to their lack of strong swimming ability pipefish are often found in shallow waters that are easily disturbed by industrial runoffs and human recreation.

an intimidating ornament in a female pipefish-26

An intimidating ornament in a female pipefish the psychology of dating older men

They are abundant on coasts of the tropical and temperate zones.

Most species of pipefish are usually 35–40 cm (14–15.5 in) in length and generally inhabit sheltered areas in coral reefs or seagrass beds.

Aquarium trade of pipefish has also increased in recent years.

Local and national fishing restrictions have been put into effect to help protect this vulnerable order of fish.

Pipefish in the genus Syngnathus have a brood pouch with a ventral seam that can completely cover all of their eggs when sealed.

In males without these pouches, eggs adhere to a strip of soft skin on the ventral surface of their bodies that does not contain any exterior covering.The evolution of male brooding in pipefish is thought to be a result of the reproductive advantage granted to pipefish ancestors that learned to deposit their eggs onto the males, who could escape predation and protect them.Furthermore, the ability to transfer immune information from both the mother (in the egg) and the father (in the pouch), unlike other chordates in which only the mother can transfer immune information, is believed to have an additive beneficial effect on offspring immunity.In this virtual issue we revisit this debate and highlight some of the articles that have examined reproductive competition among females and its evolutionary consequences for female sexual signalling.Intrasexual competition in females: evidence for sexual selection?Courtship between male and female pipefish involves lengthy and complicated shows of display.

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