An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry

An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry

Artículo de publicación ISI

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Main Authors: Pardo, Luis M., Riveros, Marcela P., Fuentes, Juan Pablo, Rojas Hernández, Noemí, Véliz Baeza, David
Format: Artículo de revista biblioteca
Language:English
Published: Springer 2016
Subjects:Sperm competition, Mating behavior, Decapoda, Paternidad, Polyandry,
Online Access:https://repositorio.uchile.cl/handle/2250/137711
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spelling dig-uchile-cl-2250-1377112023-01-19T10:17:03Z An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry Pardo, Luis M. Riveros, Marcela P. Fuentes, Juan Pablo Rojas Hernández, Noemí Véliz Baeza, David Sperm competition Mating behavior Decapoda Paternidad Polyandry Artículo de publicación ISI For polyandrous species where females have sperm storage structures, males develop several strategies to avoid sperm competition and thus to maximize the number of eggs fertilized. On the other hand, females may receive several benefits from multiple paternity (indirect and directly), and a potential sexual conflict can arise. This research describes the mating systems of an exploited crab species (Metacarcinus edwardsii), integrating (1) the individual level by assessing the mating behavior in a scenario of potential polyandry, (2) the organ level by examining histological sections of seminal receptacles from localities with scenarios of contrasting sex ratios, and (3) the genetic level by measuring the number of parents involved in egg clutches. We found that females can mate with multiple males under experimental conditions. Further, in all localities, we found histological evidences that sperm receptacles stored ejaculates from more than one male. However, contrary to expectations, genetic analysis revealed high probability of single male paternity of all progeny in each egg clutch. In this mating system, males compete to be the single male that mates with a receptive female, investing energy in guarding behavior and foregoing opportunities to mate with other females, all in order to ensure their paternity. However, females benefit from multiple mating (or potential for it) by prolonged guarding behavior, protecting them from predation after molt (soft-shelled period). The mating system of M. edwardsii can be defined as polygamous (where both sexes can mate multiple times) with genetic monogamy. FONDECYT 1110445 1150388 Direction de Investigacion y Desarrollo of the Universidad Austral de Chile Basal Grant PFB 023 2016-04-11T21:33:17Z 2016-04-11T21:33:17Z 2016 Artículo de revista Behav Ecol Sociobiol (2016) 70:73–81 DOI: 10.1007/s00265-015-2026-6 https://repositorio.uchile.cl/handle/2250/137711 en Atribución-NoComercial-SinDerivadas 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ application/pdf Springer
institution UCHILE CL
collection DSpace
country Chile
countrycode CL
component Bibliográfico
access En linea
databasecode dig-uchile-cl
tag biblioteca
region America del Sur
libraryname Dirección de Servicios de Información y Bibliotecas de la UCHILE
language English
topic Sperm competition
Mating behavior
Decapoda
Paternidad
Polyandry
Sperm competition
Mating behavior
Decapoda
Paternidad
Polyandry
spellingShingle Sperm competition
Mating behavior
Decapoda
Paternidad
Polyandry
Sperm competition
Mating behavior
Decapoda
Paternidad
Polyandry
Pardo, Luis M.
Riveros, Marcela P.
Fuentes, Juan Pablo
Rojas Hernández, Noemí
Véliz Baeza, David
An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry
description Artículo de publicación ISI
format Artículo de revista
topic_facet Sperm competition
Mating behavior
Decapoda
Paternidad
Polyandry
author Pardo, Luis M.
Riveros, Marcela P.
Fuentes, Juan Pablo
Rojas Hernández, Noemí
Véliz Baeza, David
author_facet Pardo, Luis M.
Riveros, Marcela P.
Fuentes, Juan Pablo
Rojas Hernández, Noemí
Véliz Baeza, David
author_sort Pardo, Luis M.
title An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry
title_short An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry
title_full An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry
title_fullStr An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry
title_full_unstemmed An effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry
title_sort effective sperm competition avoidance strategy in crabs drives genetic monogamy despite evidence of polyandry
publisher Springer
publishDate 2016
url https://repositorio.uchile.cl/handle/2250/137711
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