The Taxonomy, Phylogeny, and Distribution of Lampreys

Potter, I. C.; Gill, Howard S.; Renaud, Claude B.; Haoucher, Dalal

doi:10.1007/978-94-017-9306-3_2

Cited by 90 publications

(121 citation statements)

References 97 publications

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“…The results of our re-analysis for P. marinus were no different after using sexually immature male I. unicuspis as a control instead of blank water. In total, 48 peaks were detected at a relative concentration greater than 0.1% in more than one individual in at least one species and were significantly (Potter et al, 2015) illustrating the distribution of peaks across species. The three most abundant peaks for each species different between mature male samples and control samples are included, and indicated with asterisks.…”

Section: Male Chemical Profilesmentioning

confidence: 99%

“…The number of heterospecific donor males was adjusted proportionally based upon the experimental species and hence the size of the apparatus. Petromyzon marinus were exposed Potter et al (2015) and Renaud (2011).…”

Section: Behavioural Responses Of Females To Male Odoursmentioning

confidence: 99%

“…Many of the 41 species of lamprey occur in sympatry with one or more other species (Potter et al, 2015). The larval-released migratory cue appears to consist of unspecialized metabolites that are conserved among lamprey species Fine et al, 2004;Robinson et al, 2009;Yun et al, 2011;Buchinger et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Evidence for partial overlap of male olfactory cues in lampreys

Buchinger

Huertas

et al. 2016

Journal of Experimental Biology

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Animals rely on a mosaic of complex information to find and evaluate mates. Pheromones, often consisting of multiple components, are considered to be particularly important for species-recognition in many species. Although the evolution of species-specific pheromone blends is well described in many insects, very few vertebrate pheromones have been studied in a macro-evolutionary context. Here, we report a phylogenetic comparison of multi-component male odours that guide reproduction in lampreys. Chemical profiling of sexually mature males from eleven species of lamprey, representing six of ten genera and two of three families, indicated that the chemical profiles of sexually mature male odours are partially shared among species. Behavioural assays conducted with four species sympatric in the Laurentian Great Lakes indicated asymmetric female responses to heterospecific odours, where Petromyzon marinus were attracted to male odour collected from all species tested, but other species generally preferred only the odour of conspecifics. Electro-olfactogram recordings from P. marinus indicated that although P. marinus exhibited behavioural responses to odours from males of all species, at least some of the compounds that elicited olfactory responses were different in conspecific male odours compared with heterospecific male odours. We conclude that some of the compounds released by sexually mature males are shared among species and elicit olfactory and behavioural responses in P. marinus, and suggest that our results provide evidence for partial overlap of male olfactory cues among lampreys. Further characterization of the chemical identities of odour components is needed to confirm shared pheromones among species.

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Section: Male Chemical Profilesmentioning

confidence: 99%

Section: Behavioural Responses Of Females To Male Odoursmentioning

confidence: 99%

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Evidence for partial overlap of male olfactory cues in lampreys

Buchinger

Huertas

et al. 2016

Journal of Experimental Biology

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“…Phylogenetic relationships between species were established by constructing a bootstrapped neighbor-joining phylogenetic tree with a p distance model using the software Mega 4 [Tamura et al, 2007], based on sequences of mitochondrial cytochrome B of 36 species of lampreys and 2 species of hagfishes (out group), which were obtained from previous phylogenetic studies [Lang et al, 2009;Potter et al, 2015]. The species not available for this study were pruned from the tree.…”

Section: Discussionmentioning

confidence: 99%

“…First, each lamprey species was classed as either parasitic or nonparasitic. Only the parasitic lampreys were further subdivided according to feeding behavior and habitat, since nonparasitic lampreys do not feed as adults and remain in freshwater throughout their life cycle [Moser et al, 2015;Potter et al, 2015]. According to feeding behavior, parasitic lampreys were subdivided into blood feeders, flesh feeders, or those with a more generalist diet, which included blood-and flesh-feeding lampreys and the carrion feeder C. wagneri.…”

Section: Encephalization In Agnathansmentioning

confidence: 99%

The Central Nervous System of Jawless Vertebrates: Encephalization in Lampreys and Hagfishes

et al. 2017

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Lampreys and hagfishes are the sole surviving representatives of the early agnathan (jawless) stage in vertebrate evolution, which has previously been regarded as the least encephalized group of all vertebrates. Very little is known, however, about the extent of interspecific variation in relative brain size in these fishes, as previous studies have focused on only a few species, even though lampreys exhibit a variety of life history traits. While some species are parasitic as adults, with varying feeding behaviors, others (nonparasitic species) do not feed after completing their macrophagous freshwater larval phase. In addition, some parasitic species remain in freshwater, while others undergo an anadromous migration. On the basis of data for postmetamorphic individuals representing approximately 40% of all lamprey species, with representatives from each of the three families, the aforementioned differences in life history traits are reflected in variations in relative brain size. Across all lampreys, brain mass increases with body mass with a scaling factor or slope (α) of 0.35, which is less than those calculated for different groups of gnathostomatous (jawed) vertebrates (α = 0.43-0.62). When parasitic and nonparasitic species are analyzed separately, with phylogeny taken into account, the scaling factors of both groups (parasitic α = 0.43, nonparasitic α = 0.45) approach those of gnathostomes. The relative brain size in fully grown adults of parasitic species is, however, less than that of the adults of nonparasitic species, paralleling differences between fully grown adults and recently metamorphosed individuals of anadromous species. The average degree of encephalization is found in anadromous parasitic lampreys and might thus represent the ancestral condition for extant lampreys. These results suggest that the degree of encephalization in lampreys varies according to both life history traits and phylogenetic relationships.

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Shoreline slope influences movements of larval lampreys over dewatered substrate

Liedtke,

Harris,

Gray

2024

Aquaculture Fish & Fisheries

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Larval lampreys are filter feeders that live for several years burrowed in fine sediments in freshwater streams. Stream side channels and edges, where larval lampreys gather, are vulnerable to natural and human‐caused dewatering. Water level reductions can strand and kill thousands of larval lampreys, in part because many remain burrowed until their habitats are exposed, at which point larvae must emerge and attempt to move over dewatered substrate to locate wetted habitat. Dewatering for restoration efforts or seasonal closures of irrigation canals can be done slowly to reduce lamprey strandings, but in some settings, mechanisms are lacking to control the dewatering rate. Phased dewatering, where water level is reduced in stages separated by periods of static water level, could provide options when dewatering rate cannot be tightly controlled. To guide this phased approach, information is needed on the movement capability of larval lampreys. We examined larval lamprey (Entosphenus tridentatus and Lampetra spp.) movement distance and rate over dewatered substrate at shoreline slopes of 1%, 5%, 10% and 20% in a laboratory setting and modelled results using gamma regression models. Model results suggest both movement distance and movement rate increased with increasing slope and increasing larval length. We used the models to predict minimum distances and rates that 90%, 75% and 50% of medium‐sized (75 mm) lampreys would move over dewatered substrates on slopes of 1%–20%. The models predicted that 50% of larvae could move distances of ≥31 cm at rates of ≥0.7 mm/s on a 1% slope and distances of ≥502 cm at rates of ≥8.6 mm/s on a 20% slope. We present an example scenario of how information on larval movement capabilities and shoreline slope could guide phased dewatering events to limit impacts to lampreys.

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The Taxonomy, Phylogeny, and Distribution of Lampreys

Cited by 90 publications

References 97 publications

Evidence for partial overlap of male olfactory cues in lampreys

Evidence for partial overlap of male olfactory cues in lampreys

The Central Nervous System of Jawless Vertebrates: Encephalization in Lampreys and Hagfishes

Shoreline slope influences movements of larval lampreys over dewatered substrate

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