Offspring performance is linked to parental identity and male breeding ornamentation in whitefish

Huuskonen, Hannu; Haakana, Helena; Kekäläinen, Jukka

doi:10.1111/j.1095-8312.2009.01315.x

Cited by 24 publications

(29 citation statements)

References 55 publications

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“…2010), cell‐mediated immunity (Mougeot 2008), production of functional sperm (Helfenstein et al. 2010) and production of better offspring (Huuskonen et al. 2009).…”

Section: Introductionmentioning

confidence: 99%

Condition-dependent traits as signals of the functionality of vital cellular processes

2011

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Condition is a nearly ubiquitous term in the behavioural, physiological and evolutionary ecology literature; however, existing definitions are incomplete or ambiguous. This poor conceptualization has led to confusion regarding what is being signalled by condition-dependent traits and how to interpret links between ornamentation and individual characteristics such as nutrient reserves, oxidative state and immunocompetence. I propose that the combined effects of the somatic state, epigenetic state and genotype of an organism determine condition. I define condition as the relative capacity to maintain optimal functionality of vital systems within the body. A condition-dependent trait is a conspicuous feature of an organism that enhances perception of condition. Ornament expression can link to system functionality in at least four ways: (1) resources are traded off between operation of physiological pathways and production of ornaments; (2) a regulatory agent necessary for ornament expression depresses a vital physiological process; (3) ornament production requires a product of a vital physiological process; and (4) pathways are shared between ornament production and vital physiological processes. If the honesty of ornamental traits derives from connections to vital cellular processes then there is no need to invoke a fitness cost of ornamentation to insure signal honesty.

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“…2010), cell‐mediated immunity (Mougeot 2008), production of functional sperm (Helfenstein et al. 2010) and production of better offspring (Huuskonen et al. 2009).…”

Section: Introductionmentioning

confidence: 99%

Condition-dependent traits as signals of the functionality of vital cellular processes

2011

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“…Paternal effects, on the other hand, have been studied less intensively, because the potential contribution to progeny is restricted to nuclear genetic material. There are, however, several studies indicating paternal effects on fertilization success and performance during early life history (Vøllestad & Lillehammer, ; Rideout et al , ; Wedekind & Müller, ; Probst et al , ; Huuskonen et al , ; Kroll et al , ), although paternal effects in crosses between sympatric coregonids have not been studied so far. Hence, the second aim of this study was to look for maternal, paternal and breeder interaction effects on embryonic development in crosses between the two coregonid species.…”

Section: Introductionmentioning

confidence: 99%

Absence of intrinsic post‐zygotic incompatibilities in artificial crosses between sympatric coregonid species from upper Lake Constance

Eckmann

2015

Journal of Fish Biology

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A full factorial crossing experiment with five females and five males of each of two coregonid species from upper Lake Constance was used to test for intrinsic post-zygotic incompatibilities during early ontogeny. Up until shortly before hatching, there was no difference in embryo mortality between homo and heterologous crosses. A maternal effect on mortality was found in both species, but paternal effects and female-male interactions were absent. Thus, genetic incompatibility during early ontogeny does not appear to prevent introgressive hybridization, suggesting that genetic divergence between these species is maintained primarily by pre-zygotic barriers. The recent genetic homogenizations of coregonid species flocks in European alpine lakes may have been caused by a flattening of adaptive landscapes through eutrophication, but intensive stocking with larvae obtained in hatcheries from artificially fertilized eggs is also likely to be a contributing factor. To safeguard diversity among sympatric coregonids, it is important to re-establish ecological conditions conducive to species divergence and to revise traditional management strategies.

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“…1997), higher growth rate (Petrie 1994; Eilertsen et al. 2009), higher first feeding success (Huuskonen et al. 2009) or better parasite resistance (Barber et al.…”

Section: Introductionmentioning

confidence: 99%

RESEARCH PAPER: Multiple Sexual Ornamentation Signals Male Quality and Predicts Female Preference in Minnows

et al. 2010

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Sexual ornamentation often consists of multiple components. Different sexual signals may indicate different aspects of mate quality or reflect quality in different time scales. On the other hand, same signals can have a dual function and are used both in male–male competition and courtship. Many fish species are capable of rapidly altering their colouration (ephemeral colour changes), but this capability is usually ignored in sexual selection studies. Here, we used experimentally manipulated social environments to study the ephemeral colour changes in multicomponent sexual signals of male minnows (Phoxinus phoxinus) during male–male competition and female choice. We found that the dominant males courted the females more actively and had redder and/or darker skin colouration than the subordinate males. Furthermore, darkness difference between subordinate and dominant males increased in the presence of female, which suggests that the male–male competition may increase the honesty of signalling and thus facilitate female choice. In support of this hypothesis, females had a strong behavioural preference towards the more colourful males, which may indicate female choice. As colourful males often had a higher social status than paler individuals, it is possible that females base their preference on male status, not only the colouration per se. In any case, our results suggest that sexual ornamentation of male minnows may signal status, courting activity and superior quality of the males and that these signals may have a dual function in both male–male competition and female choice. Females preferred different ornamental traits (dark and red colour patterns) relatively equally, indicating that mate choice is based on multiple cues.

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Offspring performance is linked to parental identity and male breeding ornamentation in whitefish

Cited by 24 publications

References 55 publications

Condition-dependent traits as signals of the functionality of vital cellular processes

Condition-dependent traits as signals of the functionality of vital cellular processes

Absence of intrinsic post‐zygotic incompatibilities in artificial crosses between sympatric coregonid species from upper Lake Constance

RESEARCH PAPER: Multiple Sexual Ornamentation Signals Male Quality and Predicts Female Preference in Minnows

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