A recent scientific research revealed that the Huiro crab (Taliepus dentatus), a species characteristic of the submarine forests in southern Chile and a fundamental fishing resource in areas like Chiloé, exhibits monogamous reproductive behavior, contrary to previous beliefs.
The finding, published in the journal Behavioral Ecology and Sociobiology, could have direct consequences on fishing management and species conservation policies.
A discovery that challenges previous scientific views
Until now, it was assumed that the Huiro crab practiced multiple paternity, like many other marine species. Females have the ability to store sperm, mate throughout the year, and can have encounters with multiple males.
However, after a detailed genetic analysis of over 60 females and their larval broods, the team led by Dr. Luis Miguel Pardo, from the Universidad Austral de Chile (UACh), concluded that each brood comes from a single father, even under experimental conditions with male competition.
Natural mechanisms of reproductive exclusivity
The research suggests that this monogamy is achieved through sophisticated strategies, such as post-copulatory “prolonged embrace”, which prevents new matings, and seminal receptacles that block the entry of sperm from other males.
Implications for fishing and species sustainability
The discovery has urgent consequences for fishing regulation, as in Chile the regulations allow for the exclusive extraction of males to preserve the breeding females.
However, if each female needs only one male per reproductive cycle, overfishing of males could leave many females unable to fertilize, compromising the birth rate and population viability.
“Knowing how this species reproduces is key to better manage its fishing”, warned Dr. Pardo, emphasizing the need to review conservation strategies and fishing management based on this new evidence.
Science for more effective conservation
The discovery of the reproductive monogamy of the Huiro crab invites us to rethink the exploitation and conservation practices of a species vital for marine ecosystems and the local fishing economy.
Having precise information about its biology allows for designing more effective and sustainable regulations, strengthening efforts to protect the marine biodiversity of southern Chile.
