Experimental studies on the development of Lernaeocera branchialis (Copepoda: Pennellidae): population processes from egg production to maturation on the flatfish host

Whitfield, P. J.; Pilcher, M. W.; Grant, H. J.; Riley, John D.

doi:10.1007/978-94-009-3103-9_68

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…For example, some pennellid copepods and ticks have life cycles that involve switching between hosts that are very similar in their phenologies and ecologies, that is, it is not clear how they could increase outbreeding or the efficiency of transmission (Anstensrud and Schram ; Whitfield et al. ). One of the main factors limiting more extensive comparative study of the effects of life cycle complexity on animal parasite biology is the high phylogenetic conservatism of life cycles among animal parasites (e.g., Herlyn et al.…”

Section: Discussionmentioning

confidence: 99%

The evolution of life cycle complexity in aphids: Ecological optimization or historical constraint?

2015

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For decades, biologists have debated why many parasites have obligate multihost life cycles. Here, we use comparative phylogenetic analyses of aphids to evaluate the roles of ecological optimization and historical constraint in the evolution of life cycle complexity. If life cycle complexity is adaptive, it should be evolutionarily labile, that is, change in response to selection. We provide evidence that this is true in some aphids (aphidines), but not others (nonaphidines)-groups that differ in the intensity of their relationships with primary hosts. Next, we test specific mechanisms by which life cycle complexity could be adaptive or a constraint. We find that among aphidines there is a strong association between complex life cycles and polyphagy but only a weak correlation between life cycle complexity and reproductive mode. In contrast, among nonaphidines the relationship between life cycle complexity and host breadth is weak but the association between complex life cycles and sexual reproduction is strong. Thus, although the adaptiveness of life cycle complexity appears to be lineage specific, across aphids, life cycle evolution appears to be tightly linked with the evolution of other important natural history traits.

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Section: Discussionmentioning

confidence: 99%

The evolution of life cycle complexity in aphids: Ecological optimization or historical constraint?

2015

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“…copepodites are negatively phototactic, and would thus encounter detritivorous fish more frequently than planktivores inhabiting the same system. In other copepods such as Lernaocera branchialis and Salmonicola edwardsii it has been observed that infective individuals spend much of their time on or near the bottom (Whitfield et al., 1988; Poulin et al., 1990). Temperature affects the life cycle and pathogenicity of Lernaea spp.…”

Section: Discussionmentioning

confidence: 99%

Barbus comizo infestation by Lernaea cyprinacea (Crustacea: Copepoda) in the Guadiana River, southwestern Spain

Pérez‐Bote

2010

Journal of Applied Ichthyology

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The purposes of this study were to collect baseline data on parasitology of a native species and to determine if parasite infestations by Lernaea cyprinacea were related to size, month and sex. An infestation of L. cyprinacea was monitored on Barbus comizo (n = 307) from March to October 2004 in the River Guadiana, south-western Iberian Peninsula; over 55.7% of the examined B. comizo were infested. The number of female parasites per fish ranged from 1 to 8. There were significant differences in prevalence, abundance, and intensity among months. Prevalence was highest in August, while abundance (5.16) and intensity (5.32) were highest in September. Infestation levels were significantly related to fish size (r s = 0.947, n = 171, P < 0.05) and condition factor (r s = )0.199, n = 169, P < 0.05). Haematocrit values were significantly lower in infected fish (Mann-Whitney U = 21, P < 0.05). The level of infestation was independent of sex (v 2 = 0.87, P < 0.05). The dorsal and ventral areas of the fish were the most heavily parasitized.

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Exploring evolutionary trends within the Pennellidae (Copepoda: Siphonostomatoida) using molecular data

et al. 2022

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Experimental studies on the development of Lernaeocera branchialis (Copepoda: Pennellidae): population processes from egg production to maturation on the flatfish host

Cited by 4 publications

References 9 publications

The evolution of life cycle complexity in aphids: Ecological optimization or historical constraint?

The evolution of life cycle complexity in aphids: Ecological optimization or historical constraint?

Barbus comizo infestation by Lernaea cyprinacea (Crustacea: Copepoda) in the Guadiana River, southwestern Spain

Exploring evolutionary trends within the Pennellidae (Copepoda: Siphonostomatoida) using molecular data

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