9 Works

Fast life-histories are associated with larger brain size in killifishes

Will Sowersby, Simon Eckerström-Liedholm, Alexander Kotrschal, Joacim Näslund, Piotr Rowiński, Alejandro Gonzalez-Voyer & Björn Rogell
The high energetic demands associated with the vertebrate brain are proposed to result in a trade-off between the pace of life-history and relative brain size. However, because both life-history and brain size also have a strong relationship with body size, any associations between the pace of life-history and relative brain size may be confounded by coevolution with body size. Studies on systems where contrasts in the pace of life-history occur without concordant contrasts in body...

Data from: Elevated mutation rates underlie the evolution of the aquatic plant family Podostemaceae

Natsu Katayama, Satoshi Koi, Akira Sassa, Tetsuya Kurata, Ryoko Imaichi, Masahiro Kato & Tomoaki Nishiyama
Molecular evolutionary rates vary among lineages and influence the evolutionary process. Here, we report elevated genome-wide mutation rates in Podostemaceae, a family of aquatic plants with a unique body plan that allows members to live on submerged rocks in fast-flowing rivers. Molecular evolutionary analyses using 1,640 orthologous gene groups revealed two historical increases in evolutionary rates: the first at the emergence of the family and the second at the emergence of Podostemoideae, which is the...

Age- and sex-dependent variation in relatedness corresponds to reproductive skew, territory inheritance and workload in cooperatively breeding cichlids

Dario Josi, Dik Heg, Tomohiro Takeyama, Danielle Bonfils, Dmitry A. Konovalov, Joachim G. Frommen, Masanori Kohda & Michael Taborsky
Kin selection plays a major role in the evolution of cooperative systems. However, many social species exhibit complex within-group relatedness structures, where kin selection alone cannot explain the occurrence of cooperative behaviour. Understanding such social structures is crucial to elucidate the evolution and maintenance of multi-layered cooperative societies. In lamprologine cichlids, intragroup relatedness seems to correlate positively with reproductive skew, suggesting that in this clade dominants tend to provide reproductive concessions to unrelated subordinates to...

The relative effects of pace of life and habitat characteristics on the evolution of sexual ornaments: a comparative assessment

Will Sowersby, Simon Eckerström-Liedholm, Piotr Rowiński, Julia Balogh, Stefan Eiler, Joseph Upstone, Alejandro Gonzalez-Voyer & Björn Rogell
Selection may favor greater investment into sexual ornaments when opportunities for future reproduction are limited (e.g., due to high adult mortality). However, a key driver of mortality, predation, typically selects against elaborate sexual ornaments. Here, we examine the evolution of sexual ornaments in a group of killifishes, which have marked contrasts in life-history strategy between species and inhabit environments that differ in their accessibility to aquatic predators. We first assessed if the size of sexual...

The UPLC data of juvenile hormones of various heteropteran species

Shin Goto & Keiji Matsumoto
Juvenile hormone (JH) plays important roles in almost every aspect of insect development and reproduction. JHs are a group of acyclic sesquiterpenoids, and their farnesol backbone has been chemically modified to generate a homologous series of hormones in some insect lineages. JH III (epoxidised methyl farnesoate) is the most common JH in insects, but Lepidoptera (butterflies and moths) and 'higher' Diptera (suborder: Brachycera; flies) have developed their own unique JH. Although JH was first proposed...

Prosocial and antisocial choices in a monogamous cichlid with biparental care

Shun Satoh, Redouan Bshary, Momoko Shibasaki, Shumpei Sogawa, Takashi Hotta, Masanori Kohda, Seishiro Inaba & Satoshi Awata
Human society is cooperative and characterized by spontaneous prosociality. Comparative studies on endotherm vertebrates suggest that social interdependence causes the evolution of proactive prosociality. To test the generality of this hypothesis, we modified a prosocial choice task for application to the convict cichlid, Amatitlania nigrofasciata, a monogamous fish with biparental care and a strong pair bond. We show that subject males learned to favor prosocial choices when their mates were the recipients in neighboring tank....

Pervasive admixture and the spread of a large-lipped form in a cichlid fish radiation

Will Sowersby, José Cerca, Bob Wong, Topi Lehtonen, David Chapple, Mariana Leal-Cardin, Marta Barluenga & Mark Ravinet
Adaptive radiations have proven important for understanding the mechanisms and processes underlying biological diversity. The convergence of form and function, as well as admixture and adaptive introgression, are common in adaptive radiations. However, distinguishing between these two scenarios remains a challenge for evolutionary research. The Midas cichlid species complex (Amphilophus spp.) is a prime example of adaptive radiation, with phenotypic diversification occurring at various stages of genetic differentiation. One species, A. labiatus, has large fleshy...

Variation in developmental rates is not linked to environmental unpredictability in annual killifishes

Piotr Rowinski, Will Sowersby, Joacim Näslund, Simon Eckerström-Liedholm, Karl Gotthard & Björn Rogell
Comparative evidence suggests that adaptive plasticity may evolve as a response to predictable environmental variation. However, less attention has been placed on unpredictable environmental variation, which is considered to affect evolutionary trajectories by increasing phenotypic variation (or bet-hedging). Here, we examine the occurrence of bet-hedging in egg developmental rates in seven species of annual killifish that originate from a gradient of variation in precipitation rates, under three treatment incubation temperatures (21°C, 23°C, and 25°C). In...

Environmental parameters in the semi-natural condition and diapause incidence of flesh fly

Ayumu Mukai, Shin G Goto & Koki Yamaguchi
Seasonal changes in temperature and day length are distinct between rural and urban areas due to urban warming and the presence of artificial light at night. Many studies have focused on the impacts of these ubiquitous signatures on daily biological events, but empirical studies on their impacts on insect seasonality are limited. In the present study, we used the flesh fly Sarcophaga similis as a model insect to determine the impacts of urbanisation on the...

Registration Year

  • 2021
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Resource Types

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Affiliations

  • Osaka City University
    9
  • Swedish University of Agricultural Sciences
    3
  • Stockholm University
    3
  • National Autonomous University of Mexico
    2
  • University of Neuchâtel
    1
  • University of Nottingham
    1
  • Chiba University
    1
  • University of Oslo
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  • Monash University
    1
  • Manchester Metropolitan University
    1