Variation in the post‐copulatory guarding behavior of <i>Neohelice granulata</i> (Brachyura, Grapsoidea, Varunidae) in two different habitats

Moyano, María Paz Sal; Gavio, María Andrea; McLay, Colin L.; Luppi, Tomás Atilio

doi:10.1111/maec.12223

Cited by 3 publications

(2 citation statements)

References 51 publications

(112 reference statements)

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“…These paired couples often walk in tandem along the shore in the intertidal area (Kobayashi & Vazquez Archdale, 2017). Guarding behaviour, associated with copulation, has been reported in many brachyuran species (Wilber, 1989; Goshima et al ., 1996; Jivoff & Hines, 1998; Kamio et al ., 2000; Rondeau & Sainte-Marie, 2001; Snow & Neilsen, 2011; Sal Moyano et al ., 2014; Waiho et al ., 2015), but this is a rare case in which guarding behaviour can be easily and commonly observed in their natural habitat. Similar characteristics may be observed among other species, but this not applicable to all leucosiid crabs (Schembri, 1983; Almeida et al ., 2013); probably these differences have derived from the evolution, through sexual selection, under different environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Mating behaviour of the leucosiid crabPyrhila pisum(De Haan, 1841)

Kobayashi¹,

Archdale

2019

J. Mar. Biol. Ass.

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Mating behaviour of the leucosiid crab Pyrhila pisum was studied in the laboratory and tidal flats in Japan. Most males actively approached females. Males started guarding females without any courtship behaviour (pre-copulatory guarding). Males began copulation within several minutes. The copulation continued for about 1–2 h, following which males began post-copulatory guarding. This guarding lasted from almost 0 to over 3 days, but its duration was generally much longer than that prior to copulation. Release of guarding was not linked to ovulation by females. Long-term rearing experiments revealed that both sexes of P. pisum could copulate multiple times with various mates. Developmental stages of the embryos recorded from copulating ovigerous females widely varied; their timing of copulation may not be fixed. In the tidal flat, wandering males frequently contacted with other individuals, but without distinguishing single males, single females and pairs of P. pisum, or Hemigrapsus takanoi. Male P. pisum cannot recognize female conspecifics, and they approach their mates relying only on vision, without using any attractive cues from females. In cases in which males encountered pairing crabs, they successfully stole the females when the guardians were smaller than the challengers, suggesting that effectiveness of guarding depends on male size. Among the mating pairs, males tended to be larger than females, and the tendency of size-assortative mating was weak or absent. Therefore, the mating behaviour of P. pisum is not elaborate, although their guarding behaviour may contribute to improve success to some degree.

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Section: Introductionmentioning

confidence: 99%

Mating behaviour of the leucosiid crabPyrhila pisum(De Haan, 1841)

Kobayashi¹,

Archdale

2019

J. Mar. Biol. Ass.

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“…The upper intertidal zone is a S. perennis marsh and the mid-intertidal zone is divided into a S. alterniflora marsh [37] and a mudflat that continues throughout the lower intertidal zone. As at the other sites, there are burrows in both the upper-and mid-intertidal, with maximum depth 30 cm [40]. Burrows are built with a mating chamber to protect the pair during mating [32,33].…”

Section: Study Sitesmentioning

confidence: 99%

Neohelice granulata burrow fidelity behaviour related to landscape heterogeneity

et al. 2018

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Neohelice granulata provides an interesting animal model for studying behavioural process because it is widely distributed, ensuring variability related to different environmental conditions. The aim of this study was to analyse variation in site fidelity with relation to landscape heterogeneity. Field observations were carried out in three geographically distant marshes in Argentina (Mar Chiquita, San Antonio Oeste, and Riacho San José), which differ in their environmental characteristics and where crabs display different reproductive strategies. We analysed potential variation in burrow fidelity with relation to body size, sex and presence of vegetation (mudflat and saltmarsh) at all study sites. In addition, we analysed the influence of tidal flooding on fidelity in the Mar Chiquita saltmarsh. To achieve these goals, we used a mark-recapture method in which we tagged approximately 100 crabs during midsummer for each zone at each site (a total of 668 crabs) for geographical comparison and approximately 370 crabs to evaluate the influence of tidal flooding. We found more faithful individuals in Mar Chiquita than in San Antonio Oeste and Riacho San José. For the San Antonio Oeste and Riacho San José populations and for Mar Chiquita previous to flooding samples we also found differences in site fidelity related to crab body size. At San Antonio Oeste and Riacho San José the relationship between size and proportion of faithful crabs was negative (smaller crabs were more faithful than larger crabs). In Mar Chiquita, a higher proportion of fidelity previous to flooding and a size-dependent response to flooding were detected, suggesting that fidelity may be modulated by tides having different effects on crabs with different body sizes. Equal proportions of males and females displaying site fidelity were observed at all study zones and sites. Our study suggests that N. granulata burrow fidelity behaviour changes with latitude and landscape (mudflat or saltmarsh) and can be sensitive to variables such as body size and frequency of flooding.

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Different sperm allocation strategies in two populations of the semiterrestrial crab Neohelice granulata (Brachyura, Grapsoidea, Varunidae)

2015

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Sperm reserves are costly to produce and so the development of different sperm allocation strategies may be advantageous. Knowledge of sperm allocation strategies is important from an evolutionary perspective because they contribute to characterize mating systems. However, population differences in sperm allocation strategies of the same species have rarely been assessed. Here, we studied the male sperm allocation strategies in two different populations of Neohelice granulata in Mar Chiquita Lagoon (MCL) and San Antonio Oeste (SAO), Argentina. We found that the quantity of ejaculate transferred by N. granulata males depended on different factors such as male size and female receptivity duration, while it was independent of female size, at both study areas. Regarding the operational sex ratio factor, the amount of ejaculate transferred depended on it in MCL but not in SAO. Thus, N. granulata males may have the capacity to regulate the quantity of ejaculate transferred based on individual factors such as their own size and female receptivity duration, and population factors such as operational sex ratio, which varies in the two populations studied.Marine Ecology (2015) 1-13 ª

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Variation in the post‐copulatory guarding behavior of Neohelice granulata (Brachyura, Grapsoidea, Varunidae) in two different habitats

Cited by 3 publications

References 51 publications

Mating behaviour of the leucosiid crabPyrhila pisum(De Haan, 1841)

Mating behaviour of the leucosiid crabPyrhila pisum(De Haan, 1841)

Neohelice granulata burrow fidelity behaviour related to landscape heterogeneity

Different sperm allocation strategies in two populations of the semiterrestrial crab Neohelice granulata (Brachyura, Grapsoidea, Varunidae)

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