Female energy dynamics in the southernmost fiddler crab: Mixed breeding strategy in Leptuca uruguayensis

At the south of its geographical distribution, the fiddler crab Leptuca uruguayensis shows two population spawning events, with more than 65 % of the females being ovigerous. The aim of this study was to assess the energy dynamics in L. uruguayensis females to estimate how they mix the capital and t...

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Bibliographic Details
Published in:Zoology (Jena) 2022-10, Vol.154, p.126041-126041, Article 126041
Main Authors: Marciano, Agustina, Colpo, Karine Delevati, Boy, Claudia Clementina, López Greco, Laura Susana
Format: Article
Language:English
Subjects:
Biochemical resources
Brachyura
Energetic allocation
Midgut gland
Reproduction
Reproduction cost
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Summary:At the south of its geographical distribution, the fiddler crab Leptuca uruguayensis shows two population spawning events, with more than 65 % of the females being ovigerous. The aim of this study was to assess the energy dynamics in L. uruguayensis females to estimate how they mix the capital and the income breeding strategies in the first and second spawns of the short reproductive season. The relationship between the hepatosomatic (HIS) and gonadosomatic (GSI) indices was used to assess the contribution of the hepatopancreas to ovary maturation, as indicative of the capital breeding strategy, whereas the feeding rate and the energy available in the food resource (sediment) were estimated to assess the importance of energy intake in ovary maturation, as indicative of the income breeding strategy. Before the first spawn, a significant negative relationship between the HSI and GSI (p 
ISSN:0944-2006
1873-2720
DOI:10.1016/j.zool.2022.126041