Habitat predicts reproductive superfetation and body shape in the livebearing fish <i>Poeciliopsis turrubarensis</i>

Zúñiga‐Vega, J. Jaime; Reznick, David N.; Johnson, Jerald B.

doi:10.1111/j.0030-1299.2007.15763.x

Cited by 50 publications

(27 citation statements)

References 38 publications

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“…All females were dissected, and if found pregnant, we quantified superfoetation (number of broods in different developmental stages) and brood size (number of developing embryos per brood), measured individual embryo mass and calculated RA following Reznick and Endler (1982) and Zúñiga-Vega et al (2007). Embryos which shared developmental stage (as per Haynes 1995) were counted to obtain the number of embryos per brood.…”

Section: Quantifying Life History Traitsmentioning

confidence: 99%

“…Further work should evaluate the possibility that the observed local variation in superfoetation is linked to differences among rivers in water velocity (e.g. Zúñiga-Vega et al 2007), in food availability (e.g. Travis et al 1987) or in age-specific mortality rates (e.g.…”

Section: Spatial and Temporal Variation In Superfoetationmentioning

confidence: 99%

“…We anticipated that temporal consistence between populations would help inferring the underlying causes of variation in superfoetation. According to the first hypothesis that contends that superfoetation is beneficial in environments where a streamlined body shape is needed (Thibault and Schultz 1978;Zúñiga-Vega et al 2007), increased superfoetation was expected during the rainy season. However, a detailed examination of Fig.…”

Section: Poeciliopsis Gracilis Poeciliopsis Infansmentioning

confidence: 99%

“…In the laboratory, Travis et al (1987) found that female H. formosa experimentally given high food levels had a significantly greater incidence of superfoetation than females given restricted amounts of food, whereas Pires et al (2007) found differences in the degree of superfoetation exhibited by two distinct populations of Poeciliopsis prolifica in captivity. In the field, population differences in superfoetation have been reported in P. baenschi (Molina-Moctezuma 2011), Poecilia branneri (Pires et al 2010) and Poeciliopsis turrubarensis, which produce more simultaneous broods (and are thus more streamlined) in fast-than in slow-flowing streams (Zúñiga-Vega et al 2007), whereas seasonal intrapopulation differences in superfoetation have been documented only in H. formosa (Travis et al 1987;Leips and Travis 1999). As the limited number of the above examples indicates, evidence of intraspecific variation in superfoetation is scarce (Johnson and Bagley 2011).…”

Section: Introductionmentioning

confidence: 99%

“…One hypothesis contends that superfoetation is beneficial in environments where a streamlined body shape is needed, such as in fast-flowing streams or in habitats where fish must swim fast to escape from predators. Under these situations, superfoetation may allow females to produce a relatively high number of offspring without large increases in body mass or volume (Thibault and Schultz 1978;Zúñiga-Vega et al 2007). A second hypothesis suggests that superfoetation reduces peak reproductive demand and, therefore, should be favoured in environments where reproduction is costly and resources are scarce.…”

Section: Introductionmentioning

confidence: 99%

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Spatial and temporal variation in superfoetation and related life history traits of two viviparous fishes: Poeciliopsis gracilis and P. infans

Frías-Álvarez

Garcı́a

Vázquez-Vega

et al. 2014

Naturwissenschaften

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Superfoetation is the ability of females to simultaneously bear multiple broods of embryos at different developmental stages. Most studies on the phylogenetic distribution of superfoetation and on the factors that potentially promote superfoetation ignore variation within species. Here, we studied 11 populations of two species of viviparous fishes of the family Poeciliidae (Poeciliopsis gracilis and Poeciliopsis infans) and document wide variation in superfoetation and in three related life history traits: brood size, individual embryo mass and total reproductive allotment. We found significant differences in the average number of simultaneous broods among populations of P. gracilis but not among populations of P. infans. In addition, we found even greater variation between months within populations for both species, although no specific pattern of temporal variation was evident. Instead of the expected consistency of seasonal differences in superfoetation across populations, we found that large variation among months within seasons and the amount and direction of this monthly variation differed widely between populations. Our results emphasize the importance of including intraspecific variation in superfoetation and other life history traits in studies that aimed at finding general explanations of life history trait evolution.

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Section: Quantifying Life History Traitsmentioning

confidence: 99%

Section: Spatial and Temporal Variation In Superfoetationmentioning

confidence: 99%

Section: Poeciliopsis Gracilis Poeciliopsis Infansmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatial and temporal variation in superfoetation and related life history traits of two viviparous fishes: Poeciliopsis gracilis and P. infans

Frías-Álvarez

Garcı́a

Vázquez-Vega

et al. 2014

Naturwissenschaften

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Predation affects body shape in the knife livebearer Alfaro cultratus (Cyprinodontiformes: Poeciliidae)

Ardon,

Golden,

Williams

et al. 2023

Ecology and Evolution

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Livebearing fishes are a common model for studying the effects of predation on prey biology. Numerous studies have found differences in life history, sexual selection, behavior, and morphology between populations of the same species that co‐occur with predators and those that do not. Alfaro cultratus is a livebearing fish with populations in different predation environments, but unlike other livebearers, this species also has an extreme body shape that is laterally compressed. Given this unusual morphology, we asked if predation environment would still predict overall body shape, as has been documented in other species. We collected specimens from both predator and no predator sites in Costa Rica and used a geometric morphometrics analysis to determine if body shape is affected by predation environment, while controlling for size and river gradient. Body shape does indeed differ between predation environments; however, the observed differences contrast with the patterns found in other livebearer systems. Alfaro cultratus in predation environments had deeper and shorter bodies and deeper caudal peduncles than those found in environments without dominant fish predators.

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A multilocus phylogeny of the fish genus Poeciliopsis: Solving taxonomic uncertainties and preliminary evidence of reticulation

Mateos

Domínguez‐Domínguez

Varela-Romero

2019

Ecology and Evolution

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The fish genus Poeciliopsis constitutes a valuable research system for evolutionary ecology, whose phylogenetic relationships have not been fully elucidated. We conducted a multilocus phylogenetic study of the genus based on seven nuclear and two mitochondrial loci with a thorough set of analytical approaches, that is, concatenated (also known as super‐matrix), species trees, and phylogenetic networks. Although several relationships remain unresolved, the overall results uncovered phylogenetic affinities among several members of this genus . A population previously considered of undetermined taxonomic status could be unequivocally assigned to P. scarlli ; revealing a relatively recent dispersal event across the Trans‐Mexican Volcanic Belt (TMVB) or Pacific Ocean, which constitute a strong barrier to north–south dispersal of many terrestrial and freshwater taxa. The closest relatives of P. balsas , a species distributed south of the TMVB, are distributed in the north; representing an additional north–south split in the genus. An undescribed species of Poeciliopsis , with a highly restricted distribution (i.e., a short stretch of the Rio Concepcion; just south of the US‐Mexico border), falls within the Leptorhaphis species complex. Our results are inconsistent with the hypothesis that this species originated by “breakdown” of an asexual hybrid lineage. On the other hand, network analyses suggest one or more possible cases of reticulation within the genus that require further evaluation with genome‐wide marker representation and additional analytical tools. The most strongly supported case of reticulation occurred within the subgenus Aulophallus (restricted to Central America), and implies a hybrid origin for P. retropinna (i.e., between P. paucimaculata and P. elongata ). We consider that P. balsas and P. new species are of conservation concern.

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Habitat predicts reproductive superfetation and body shape in the livebearing fish Poeciliopsis turrubarensis

Cited by 50 publications

References 38 publications

Spatial and temporal variation in superfoetation and related life history traits of two viviparous fishes: Poeciliopsis gracilis and P. infans

Spatial and temporal variation in superfoetation and related life history traits of two viviparous fishes: Poeciliopsis gracilis and P. infans

Predation affects body shape in the knife livebearer Alfaro cultratus (Cyprinodontiformes: Poeciliidae)

A multilocus phylogeny of the fish genus Poeciliopsis: Solving taxonomic uncertainties and preliminary evidence of reticulation

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