Sea Lamprey (Petromyzon marinus) Attachment to the Common Bottlenose Dolphin (Tursiops truncatus)

Miočić‐Stošić, Jure; Pleslić, Grgur; Holcer, Draško

doi:10.1578/am.46.2.2020.152

Cited by 6 publications

(2 citation statements)

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“…This dispersal capability is further supported by observer and commercial at-sea data, as well as museum vouchers that demonstrated that New Zealand pouched lamprey may travel at least 400 km from the New Zealand shoreline (Fisheries New Zealand Official Information Act request dated 4 March 2019 and A. Miller 2019, Personal Communication with Auckland War Memorial Museum curators, 27 May 2020). Suspected prey species of lampreys (e.g., cetaceans; Pike 1951 ; McDowall 1990 ; Miočić-Stošić et al 2020 ) are thought to make long-range migrations across New Zealand and pouched lamprey may make long-range migrations with them by attaching to them as “hitchhikers.”…”

Section: Discussionmentioning

confidence: 99%

Population Genomics of New Zealand Pouched Lamprey (kanakana; piharau;Geotria australis)

Miller

Timoshevskaya

Smith

et al. 2022

Journal of Heredity

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Pouched lamprey (Geotria australis) or kanakana/piharau is a culturally and ecologically significant jawless fish that is distributed throughout Aotearoa New Zealand. Despite its importance, much remains unknown about historical relationships and gene flow between populations of this enigmatic species within New Zealand. To help inform management, we assembled a draft Geotria australis genome and completed the first comprehensive population genomics analysis of pouched lamprey within New Zealand using targeted gene sequencing (Cyt-b and COI) and restriction site-associated DNA sequencing (RADSeq) methods. Employing 16,000 genome-wide single nucleotide polymorphisms (SNPs) derived from RADSeq (n=186) and sequence data from Cyt-b (766 bp, n=94) and COI (589 bp, n=20), we reveal low levels of structure across 10 sampling locations spanning the species range within New Zealand. F-statistics, outlier analyses, and STRUCTURE suggest a single panmictic population, and Mantel and EEMS tests reveal no significant isolation by distance. This implies either ongoing gene flow among populations or recent shared ancestry among New Zealand pouched lamprey. We can now use the information gained from these genetic tools to assist managers with monitoring effective population size, managing potential diseases, and conservation measures such as artificial propagation programs. We further demonstrate the general utility of these genetic tools for acquiring information about elusive species.

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Section: Discussionmentioning

confidence: 99%

Population Genomics of New Zealand Pouched Lamprey (kanakana; piharau;Geotria australis)

Miller

Timoshevskaya

Smith

et al. 2022

Journal of Heredity

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“…Finally, ectoparasites such as ciliates (Kyaroikeus cetarius) [43], copepods (Pennella balaenopterae; [3,44], nematodes [36,45], cookie cutter sharks (Isistius spp.) [3,46], and several species of sea lamprey (Entosphenus tridentata and Petromyzon marinus) [3,[47][48][49] also cause skin injuries in cetaceans. Congenital disorders including anomalously white and partial lack of epidermal pigmentation also can alter the appearance of the epidermis in some cetacean species [38,50].…”

Section: Introductionmentioning

confidence: 99%

Epidemiology of skin changes in endangered Southern Resident killer whales (Orcinus orca)

Gaydos¹,

Leger

Raverty

et al. 2023

PLoS ONE

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Photographic identification catalogs of individual killer whales (Orcinus orca) over time provide a tool for remote health assessment. We retrospectively examined digital photographs of Southern Resident killer whales in the Salish Sea to characterize skin changes and to determine if they could be an indicator of individual, pod, or population health. Using photographs collected from 2004 through 2016 from 18,697 individual whale sightings, we identified six lesions (cephalopod, erosions, gray patches, gray targets, orange on gray, and pinpoint black discoloration). Of 141 whales that were alive at some point during the study, 99% had photographic evidence of skin lesions. Using a multivariate model including age, sex, pod, and matriline across time, the point prevalence of the two most prevalent lesions, gray patches and gray targets, varied between pods and between years and showed small differences between stage classes. Despite minor differences, we document a strong increase in point prevalence of both lesion types in all three pods from 2004 through 2016. The health significance of this is not clear, but the possible relationship between these lesions and decreasing body condition and immunocompetence in an endangered, non-recovering population is a concern. Understanding the etiology and pathogenesis of these lesions is important to better understand the health significance of these skin changes that are increasing in prevalence.

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Dolphins, sharks, and barnacles: Use of photographs to examine intra‐ and inter‐specific interactions in bottlenose dolphins in Mozambique

Marley,

McConnell,

Allen

et al. 2024

Ecology and Evolution

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Understanding interactions within and between species is crucial to ecological research. However, for cetaceans such interactions can be difficult to observe in the field. Photographs offer an opportunity to study intra‐ and inter‐specific interactions, by capturing ‘snapshots’ of their occurrence over space and time. At‐surface and underwater photographs of bottlenose dolphins (Tursiops aduncus) inhabiting Ponta do Ouro Partial Marine Reserve (PPMR), Mozambique, were used to examine evidence of interactions with other dolphins, predators and ectoparasites. Intra‐specific scarring levels significantly differed by sex and age class, with males displaying more scarring than females. Similarly, adults had more scarring than juveniles or calves. Shark bites significantly differed in their distribution across dolphin body areas, with the dorsal side being more frequently wounded than the ventral side. The presence of barnacles was exclusive to fluke, dorsal and pectoral fins, and showed strong seasonal trends. Overall, this study demonstrates the value of photographs for examining marine ecological interactions. It provides the first insights regarding dolphin social behaviour, predation risk and health for this population. These in turn will support future research into the population dynamics and conservation of the PPMR dolphins, which is urgently required in the face of locally increasing anthropogenic pressures.

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Sea Lamprey (Petromyzon marinus) Attachment to the Common Bottlenose Dolphin (Tursiops truncatus)

Cited by 6 publications

References 0 publications

Population Genomics of New Zealand Pouched Lamprey (kanakana; piharau;Geotria australis)

Population Genomics of New Zealand Pouched Lamprey (kanakana; piharau;Geotria australis)

Epidemiology of skin changes in endangered Southern Resident killer whales (Orcinus orca)

Dolphins, sharks, and barnacles: Use of photographs to examine intra‐ and inter‐specific interactions in bottlenose dolphins in Mozambique

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