Temperature-dependent seminal recovery in the southern king crab
            <i>Lithodes santolla</i>

Pretterebner, Katrin; Pardo, Luis Miguel; Paschke, Kurt

doi:10.1098/rsos.181700

Cited by 11 publications

(11 citation statements)

References 42 publications

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“…In comparison with other brachyurans or crab‐like groups, the investment in seminal fluid is impressive in H. plana , because the VSI from other decapod species, using the same methodology, reaches much lower values. This is the case for the anomuran king crab Lithodes santolla (VSI = 0.05%, Pretterebner, Pardo, & Paschke, ), and the brown crab, Metacarcinus edwardsii (VSI = 0.14%; recalculated from Pardo, Rosas, Fuentes, Riveros, & Chaparro, ). In Danielethus crenulatus (Platyxanthidae), the VSI recorded is only 0.7% (Farias et al, ), however, this estimation for D. crenulatus , is not fully comparable with H. plana because the VSI was estimated including thoracic appendices and was wet weight based.…”

Section: Discussionmentioning

confidence: 97%

Integrative depiction of the male reproductive system of the commercial purple crab Homalaspis plana (Platyxanthidae): Structure and function

Pardo

Zara

Riveros

et al. 2019

Journal of Morphology

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The information available on structures and function of reproductive systems are female-biased in many animal groups and crabs are not an exception. However, knowledge about the male reproductive system can help us to understand evolutionary and ecological processes such as the mating system and mating behavior. This study focuses on an integrative description of the principal regions of the male reproductive system of the purple crab, Homalaspis plana, a commercially exploited crab from the southeastern Pacific. For this description a combination of morphological observation, gravimetric records, histological and histochemical techniques and biochemical analysis were used. Also, a gross description of the seminal receptacle of the female was performed. The male reproductive system of H. plana was highly extended and complex, with a great capacity to produce and store spermatophores and secrete, at least, two kinds of seminal fluids. Sperm production, sperm packaging in spermatophores, storage of spermatophores and seminal liquid secretion were functions localized in specific regions. The vasosomatic index was the highest recorded to date in crabs, symptomatic of a high investment in reproduction. All these traits allow identification of H. plana as an internal sperm plug producer, which matches well with the highly extensible seminal receptacle of females. The great quantity of seminal material transferred to females during mating indicates that males may be able to mate only one time in the reproductive season and thus this species could be vulnerable to sperm depletion in males and sperm limitation in females if the fishery substantively reduced the abundance of males in the populations. K E Y W O R D S Brachyura, mating systems, seminal receptacle, sperm plug, vas deferens

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Section: Discussionmentioning

confidence: 97%

Integrative depiction of the male reproductive system of the commercial purple crab Homalaspis plana (Platyxanthidae): Structure and function

Pardo

Zara

Riveros

et al. 2019

Journal of Morphology

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“…Recovery period of seminal reserves after mating may be a key feature in reproduction as it influences the available seminal material stock and as a consequence the male's mating capacity (Sainte‐Marie, 2007). So far, sperm or seminal regeneration rates have been determined in various decapod species (Bugnot & López Greco, 2009; Kendall, Wolcott, Wolcott, & Hines, 2001; Pascual et al, 1998; Pretterebner, Pardo, & Paschke, 2019; Sato, Ashidate, Jinbo, & Goshima, 2006; Sato & Goshima, 2006). However, the key environmental variable temperature, which affects the rate of the energetic metabolism in ectotherms, was used only in few of these studies as a factor.…”

Section: Introductionmentioning

confidence: 99%

“…However, the key environmental variable temperature, which affects the rate of the energetic metabolism in ectotherms, was used only in few of these studies as a factor. Examples with a temperature‐dependent production of seminal material/sperm are the shrimp Penaeus setiferus (Pascual et al, 1998) and the southern king crab Lithodes santolla (Pretterebner et al, 2019). On one hand, in the tropical shrimp P. setiferus, spermatophores are replaced faster at 33°C (6 days) compared with 25°C (8 days) (Pascual et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

“…On one hand, in the tropical shrimp P. setiferus, spermatophores are replaced faster at 33°C (6 days) compared with 25°C (8 days) (Pascual et al, 1998). On the other hand, in the temperate/cold‐temperate species L. santolla, full seminal recovery requires more than 30 days and is twice as fast at 9°C than 12°C (Pretterebner et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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All or nothing: Switch to high current reproductive investment under risk of starvation in male kelp crab

Pretterebner

Pardo

2020

Ecology and Evolution

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One of the key features in reproduction of polygynous species is seminal recovery after mating. However, it is poorly known how environmental factors affect the recuperation period of seminal material. This study aims to test plasticity in recovery of seminal reserves in response to distinct environmental conditions of the kelp crab Taliepus dentatus. Male crabs were maintained after depletion of seminal reserves in one of eight different treatments in a factorial design of temperature (12 and 16°C), food availability (with alimentation and food deprivation), and time period (15 and 30 days), simulating different environmental situations in the laboratory to which the crab might be exposed to along its distribution. Temperature and food availability modulated the seminal recovery period in T. dentatus. Complete replenishment was reached within 30 days in all treatments (i.e., 12 and 16°C each with alimentation and food deprivation), but the highest recovery index was found in crabs without food provision (16°C). In this condition, the recovery index was twice as high compared with males maintained at a similar temperature but with feeding. Prolonged starvation at 16°C may be extremely stressful conditions for male crabs, during which risk to die probably triggered a concentration of the reproductive effort in favor of immediate reproduction. This suggests that plasticity of energy allocation toward reproduction may be expressed during extremely suboptimal conditions, which might be a similar strategy as proposed by the terminal investment hypothesis. The generally relatively fast seminal recovery regardless of the temperature may explain the kelp crab's continuous mating throughout the year.

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“…As a null prediction, we predicted a unimodal relationship between prevalence and host body size. Considering that fishing is restricted by law to large (12 cm cephalothorax length) male individuals [22], sex- and size-dependent parasitosis would have important economic consequences in the region. To our best knowledge, this is the first study on the geographical patterns of prevalence of A. rohanae microsporidian in king crabs along the south Chilean Patagonia.…”

Section: Introductionmentioning

confidence: 99%

Widespread infection of Areospora rohanae in southern king crab ( Lithodes santolla ) populations across south Chilean Patagonia

et al. 2019

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Cottage cheese disease is caused by microsporidian parasites that infect a wide range of animal populations. Despite its potential to affect economically important activities, the spatial patterns of prevalence of this disease are still not well understood. Here, we analyse the occurrence of the microsporidian Areospora rohanae in populations of the king crab Lithodes santolla over ca 800 km of the southeastern Pacific shore. In winter 2011, conical pots were deployed between 50 and 200 m depth to capture crabs of a wide range of sizes. The infection was widely distributed along the region, with a mean prevalence of 16%, and no significant association between prevalence and geographical location was detected. Males, females and ovigerous females showed similar prevalence values of 16.5 (13–18.9), 15 (9.2–15) and 16.7% (10–19%), respectively. These patterns of prevalence were consistent across crab body sizes, despite the ontogenetic and sex-dependent variations in feeding behaviour and bathymetric migrations previously reported for king crabs. This study provided the first report of the geographical distribution of A. rohanae infecting southern king crabs.

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Temperature-dependent seminal recovery in the southern king crab Lithodes santolla

Cited by 11 publications

References 42 publications

Integrative depiction of the male reproductive system of the commercial purple crab Homalaspis plana (Platyxanthidae): Structure and function

Integrative depiction of the male reproductive system of the commercial purple crab Homalaspis plana (Platyxanthidae): Structure and function

All or nothing: Switch to high current reproductive investment under risk of starvation in male kelp crab

Widespread infection of Areospora rohanae in southern king crab ( Lithodes santolla ) populations across south Chilean Patagonia

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