Polygenic sex determination produces modular sex polymorphism in an African cichlid fish DOI Creative Commons
Emily C. Moore, Patrick J. Ciccotto,

Erin N. Peterson

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2021, Volume and Issue: unknown

Published: Oct. 9, 2021

For many vertebrates, a single genetic locus initiates cascade of developmental sex differences in the gonad and throughout organism, resulting adults with two, phenotypically distinct sexes. Species polygenic determination (PSD) have multiple interacting alleles segregating within species, allowing for more than two genotypic sexes, scenarios where genotype at given can be decoupled from gonadal sex. Here we investigate effects PSD on secondary sexual characteristics cichlid fish Metriaclima mbenjii , one female (W) male (Y) allele interact to produce siblings four possible classes: ZZXX females, ZWXX ZWXY ZZXY males. We find that M. produces an interplay sex-linkage sex-limitation modular variation morphological behavioral traits. Further, evolution or introgression novel determiner creates additional axes phenotypic varied traits, including genital morphology, craniofacial gastrointestinal home tank behaviors. In contrast single-locus determination, which broadly results dimorphism, induce higher-order polymorphism. The modularity produced by provides context understanding evolutionary causes consequences maintenance, gain, loss populations. Significance Statement Sex traits occur when those are modified factors inherited chromosomes. investigated how emerge species set chromosomes, measuring variety morphological, physiological, Rather exhibiting dimorphism associated primary sex, has polymorphism characteristics, Variation is modular, involving sex-linked sex-limited Our findings provide implications systems whole-organism fitness co-evolve, significant creation diverse during transitions among chromosome systems.

Language: Английский

Polygenic sex determination produces modular sex polymorphism in an African cichlid fish DOI Creative Commons
Emily C. Moore, Patrick J. Ciccotto,

Erin N. Peterson

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2022, Volume and Issue: 119(14)

Published: March 31, 2022

Significance Sex differences in traits can occur when those are modified by genetic factors inherited on sex chromosomes. We investigated how emerge a species with more than one set of chromosomes, measuring variety morphological, physiological, and behavioral traits. Rather exhibiting sexual dimorphism associated primary sex, the has higher-order polymorphism secondary characteristics or two phenotypic sexes. Variation is modular, involving interplay sex-linked sex-limited Our findings provide implications for determination systems whole-organism fitness coevolve, including that significant creation loss variation diverse during transitions among chromosome systems.

Language: Английский

Citations

19
Preface: Advances in cichlid research: behavior, ecology, and evolutionary biology DOI Open Access
Stephan Koblmüller, R. Craig Albertson, Martin J. Genner

et al.

Hydrobiologia, Journal Year: 2015, Volume and Issue: 748(1), P. 1 - 5

Published: Feb. 9, 2015

Language: Английский

Citations

9
Morphology of the urogenital papilla of the male marine teleost Black Rockfish, Sebastes schlegelii (Hilgendorf, 1880), and its role in internal fertilization DOI
Tao Wang, Xueying Wang, Ning Zhao

et al.

Journal of Morphology, Journal Year: 2022, Volume and Issue: 284(1)

Published: Nov. 14, 2022

Abstract There are few detailed descriptions of the morphology male external genitalia, urogenital papilla (UGP), Black Rockfish ( Sebastes schlegelii Hilgendorf, 1880). The purpose this study was to evaluate organ histologically and determine time development UGP in Rockfish. Twelve adult males, three females around 500 juveniles were used experiment. divided into normal developmental androgen groups. group exposed methyltestosterone (100 μg/L) for 2 h daily 38 days. Samples N = 10 per sampling) randomly selected analysis every 5 days from 30 116 after birth. Parameters assessed included type epithelium, composition connective tissue, muscular timing development. Differences these parameters between groups evaluated. results indicated that fish contains sperm duct ureter, which have function transporting urine, respectively. androgen‐treated juvenile developed earlier than group. This provides a reference understanding genitalia other viviparous fishes by studying

Language: Английский

Citations

3
From land to water: “sunken” T-maze for associated learning in cichlid fish DOI
V. Gedzun, I. Sukhanova,

Gleb M. Aliper

et al.

Behavioural Brain Research, Journal Year: 2024, Volume and Issue: 471, P. 115077 - 115077

Published: May 31, 2024

Language: Английский

Citations

0
Preface: Advances in cichlid research II: behavior, ecology and evolutionary biology DOI
Stephan Koblmüller, R. Craig Albertson, Martin J. Genner

et al.

Hydrobiologia, Journal Year: 2017, Volume and Issue: 791(1), P. 1 - 6

Published: Feb. 9, 2017

Language: Английский

Citations

1
Heterospecific aggression differs predominately by species, rather than sex, in Lake Malawi cichlid fish DOI Creative Commons
Emily C. Moore, Reade B. Roberts

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2019, Volume and Issue: unknown

Published: July 30, 2019

ABSTRACT Because of their striking diversity, Lake Malawi cichlid fish have been well studied for male aggression, particularly among dominant males closely related sister species within the framework mate-choice and speciation. However, aggression in females has largely ignored, variation aggressive behaviors between more distantly-related taxa is not understood despite its potential impact a complex community structure. To better understand patterns species, we presented from five with non-predator intruder recorded all movement acts. Additionally, measured excreted cortisol levels day after assay to evaluate one physiological aspect stress response. We identified species-specific both specific acts, overall level aggression. found that sexual dimorphism acts varies by act, where most also females. vary taxa, are associated restless behavior assay, but These findings bearing on understanding sex differences structure this important model rapid evolution.

Language: Английский

Citations

1
Assessing the Levels of Functional Adaptation: Finite Element Analysis Reveals Species, Hybrid, and Sexual Variation in the Biomechanics of African Cichlid Mandibles DOI Creative Commons
Kirsty McWhinnie, Jeremy S. Gibson, Magnús Kjartan Gíslason

et al.

Evolutionary Biology, Journal Year: 2022, Volume and Issue: 49(2), P. 205 - 220

Published: March 22, 2022

Abstract To understand how adaptive divergence emerges it is essential to examine the function of phenotypic traits along a continuum. For vertebrates, mandible provides key link with foraging and other important activities which has made highly relevant for investigations biomechanical change. Variation in shape known correspond ecology but its often only investigated between distinct species. However, such occur be maintained selection likely draws from many sources variation. African cichlids represent an exemplar model understanding processes unfold variation existing species, sexes, generated nature by potential hybridization. We explored through finite element modelling approach predicted that hybrids females would have reduced functional capabilities, former line disruptive latter due trade-offs incurred maternal mouthbrooding Malawian haplochromines. revealed evidence structural adaptations Tropheops ‘Red Cheek’ Labeotrophues fuelleborni impacted dispersion mechanical stress ways matched these Also, showed higher stresses relative both species across mandible. Sexual dimorphism handling was evident despite minor differences males showing enhanced load resistance. appeared were disadvantaged females, displayed asymmetry handling. Together, results show sex based variation, could targeted divergent selection.

Language: Английский

Citations

0
Polygenic sex determination produces modular sex polymorphism in an African cichlid fish DOI Creative Commons
Emily C. Moore, Patrick J. Ciccotto,

Erin N. Peterson

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2021, Volume and Issue: unknown

Published: Oct. 9, 2021

For many vertebrates, a single genetic locus initiates cascade of developmental sex differences in the gonad and throughout organism, resulting adults with two, phenotypically distinct sexes. Species polygenic determination (PSD) have multiple interacting alleles segregating within species, allowing for more than two genotypic sexes, scenarios where genotype at given can be decoupled from gonadal sex. Here we investigate effects PSD on secondary sexual characteristics cichlid fish Metriaclima mbenjii , one female (W) male (Y) allele interact to produce siblings four possible classes: ZZXX females, ZWXX ZWXY ZZXY males. We find that M. produces an interplay sex-linkage sex-limitation modular variation morphological behavioral traits. Further, evolution or introgression novel determiner creates additional axes phenotypic varied traits, including genital morphology, craniofacial gastrointestinal home tank behaviors. In contrast single-locus determination, which broadly results dimorphism, induce higher-order polymorphism. The modularity produced by provides context understanding evolutionary causes consequences maintenance, gain, loss populations. Significance Statement Sex traits occur when those are modified factors inherited chromosomes. investigated how emerge species set chromosomes, measuring variety morphological, physiological, Rather exhibiting dimorphism associated primary sex, has polymorphism characteristics, Variation is modular, involving sex-linked sex-limited Our findings provide implications systems whole-organism fitness co-evolve, significant creation diverse during transitions among chromosome systems.

Language: Английский

Citations

0