Absence of heterosis for hypoxia tolerance in F1 hybrids of Tigriopus californicus DOI
Aimee Deconinck,

Olivia F Madalone,

Christopher S. Willett

et al.

Journal of Heredity, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract Hybridization produces a range of outcomes from advantageous to disadvantageous, and goal genetic research is understand the gene interactions that generate these outcomes. Interactions between cytoplasmic elements, such as mitochondria, nucleus may be particularly vulnerable accruing disadvantageous combinations result their different rates evolution. Consequently, mitonuclear incompatibilities play an important role in hybrid even if negative impacts could masked for some fitness measures by heterosis first-generation (F1) hybrids. We used Tigriopus californicus, model system also known exhibiting F1 generation outbreeding depression later generations, test whether or would occur when mismatch was paired with stress heavily mitochondrial processes—specifically, hypoxia. generated 284 parental 436 hybrids four population crosses (720 total) compared populations hypoxia tolerance. observed that, on average, were less likely survive than populations, although we did not detect statistically significant trend (P = 0.246 0.614). This suggests intense stressor coordination hybridization vary trait.

Language: Английский

Effect of hypoxia and acidification on metabolic rate of Ponto-Caspian gobies and their native competitors in the context of climate change DOI
Piotr Kłosiński, Jarosław Kobak, Tomasz Kakareko

et al.

Hydrobiologia, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Language: Английский

Citations

1
Metabolic Diversity of a Widely Distributed Tropical Freshwater Crab Is Not Underpinned by Genetic Differences DOI Creative Commons
Lucy M. Turner, Christopher J. Thorpe, Michael Collins

et al.

Journal of Biogeography, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

ABSTRACT Aim The aim of this study was to understand the interplay between local and regional factors as drivers population physiological diversity in a tropical freshwater crab species. Location Western Ghats, south‐west India. Taxon Barytelphusa cunicularis, Brachyura, Crustacea. Methods We applied an integrative approach combining genetics whole animal physiology, using cunicularis our model tested for effects location (e.g., latitude, altitude), season (as proxy rainfall water temperature) and/or warming on indices respiratory physiology (metabolic rate, MO 2 ) hypoxic performance (P crit , i.e., PO at which routine can no longer be sustained) five widely distributed populations also generated genetic data (mtDNA COI nDNA histone H3 sequences) determine extent any structuring cryptic species present verify that we were investigating single Results Despite high level different B. examined, distances observed consistent with intra‐ not interspecific differences crabs. Populations varied (MO responses observed. There significant respiration response temperature P acute hypoxia. Main Conclusions conclude environmental are important shaping systems. This highlights need include population‐level projections make how biodiversity will respond ongoing future changes, including those caused by climate change.

Language: Английский

Citations

0
Mitonuclear effects on sex ratio persist across generations in interpopulation hybrids DOI Open Access
Suzanne Edmands,

Jacob R. Denova,

Ben A. Flanagan

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Sept. 10, 2023

Abstract Eukaryotic energy production requires tight coordination between gene products from both the nuclear and mitochondrial genomes. Because males females often have different energetic strategies, this mitonuclear can be expected to differentially impact two sexes. Previous work found evidence for sex-specific effects in copepod Tigriopus californicus by comparing parental lines their reciprocal F1 crosses. However, an alternative hypothesis is that patterns could instead driven source of alleles. Here we test extending same cross F2 hybrids, who receive maternal paternal alleles hybrids. Results confirm on sex ratio, with distorted ratios persisting generations, despite reduced fitness No interactions were other phenotypic traits measured. Mitochondrial DNA content was shown higher females, more stress-tolerant sex. Both routine metabolic rate oxidative damage lower hybrids than parentals. Confirmation sex-biased T. notable, given species lacks chromosomes, which confound interpretations effects.

Language: Английский

Citations

2
Absence of heterosis for hypoxia tolerance in F1 hybrids of Tigriopus californicus DOI
Aimee Deconinck,

Olivia F Madalone,

Christopher S. Willett

et al.

Journal of Heredity, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract Hybridization produces a range of outcomes from advantageous to disadvantageous, and goal genetic research is understand the gene interactions that generate these outcomes. Interactions between cytoplasmic elements, such as mitochondria, nucleus may be particularly vulnerable accruing disadvantageous combinations result their different rates evolution. Consequently, mitonuclear incompatibilities play an important role in hybrid even if negative impacts could masked for some fitness measures by heterosis first-generation (F1) hybrids. We used Tigriopus californicus, model system also known exhibiting F1 generation outbreeding depression later generations, test whether or would occur when mismatch was paired with stress heavily mitochondrial processes—specifically, hypoxia. generated 284 parental 436 hybrids four population crosses (720 total) compared populations hypoxia tolerance. observed that, on average, were less likely survive than populations, although we did not detect statistically significant trend (P = 0.246 0.614). This suggests intense stressor coordination hybridization vary trait.

Language: Английский

Citations

0