2017
DOI: 10.1002/ecs2.2040
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Mate limitation in sea lice infesting wild salmon hosts: the influence of parasite sex ratio and aggregation

Abstract: Mate limitation in dioecious parasite species has the potential to impact parasite population growth. Our focus of interest was the influence of parasite sex distribution among hosts on parasite reproduction and transmission dynamics for populations of ectoparasitic sea lice (Lepeophtheirus salmonis Krøyer) establishing on wild juvenile salmon hosts. The data included more than 139,000 out‐migrating juvenile pink salmon (Oncorhynchus gorbuscha (Walbaum)) and chum salmon (Oncorhynchus keta (Walbaum)) in British… Show more

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Cited by 13 publications
(13 citation statements)
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“…Norwegian law demands that salmon louse numbers are collected in aquaculture regularly [ 40 ]; however, these numbers cannot be used to deduce the sex ratio of the population. Adult female lice are counted separately, while adult males, preadult males, and preadult females are collectively classified as “mobile stages.” [ 41 ] analyzed six studies reporting male and female counts from wild and farmed Atlantic salmon and they could not find a generally valid sex ratio. In contrast, they concluded that host population, parasite population, and environment might influence the sex ratio of salmon lice [ 41 ].…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Norwegian law demands that salmon louse numbers are collected in aquaculture regularly [ 40 ]; however, these numbers cannot be used to deduce the sex ratio of the population. Adult female lice are counted separately, while adult males, preadult males, and preadult females are collectively classified as “mobile stages.” [ 41 ] analyzed six studies reporting male and female counts from wild and farmed Atlantic salmon and they could not find a generally valid sex ratio. In contrast, they concluded that host population, parasite population, and environment might influence the sex ratio of salmon lice [ 41 ].…”
Section: Discussionmentioning
confidence: 99%
“…Adult female lice are counted separately, while adult males, preadult males, and preadult females are collectively classified as “mobile stages.” [ 41 ] analyzed six studies reporting male and female counts from wild and farmed Atlantic salmon and they could not find a generally valid sex ratio. In contrast, they concluded that host population, parasite population, and environment might influence the sex ratio of salmon lice [ 41 ]. Nevertheless, there seems to be a tendency to female-biased populations in the sea and male-biased populations in aquaculture [ 38 ].…”
Section: Discussionmentioning
confidence: 99%
“…Sterilized individuals, especially males, can disproportionately impact populations by deceiving conspecifics into investing in infertile matings . This strategy has been successfully used to control other pest species, including the release of male mosquitos sterilized by radiation to function as ‘ovitraps’ for female mosquitos, and may be particularly effective against sea lice as female lice are frequently mate‐limited …”
Section: Discussionmentioning
confidence: 99%
“…30 This strategy has been successfully used to control other pest species, including the release of male mosquitos sterilized by radiation to function as 'ovitraps' for female mosquitos, 31 and may be particularly effective against sea lice as female lice are frequently mate-limited. 32 Lethal or sterilizing doses may conceivably be applied to all lice life stages. Combined with existing lice control methods to minimize encounter rates or remove attached lice from stock, UVC has potential to assist in the ongoing suppression of sea lice populations.…”
Section: Opportunities and Challenges For Industry Deploymentmentioning
confidence: 99%
“…This situation reflects an assumption made in many sea louse population models (Revie et al 2005, Rittenhouse et al 2016. The option allowed us to explore the influence of lumpfish and chemical controls in conjunction with mate limitation (Krkošek et al 2012, Stormoen et al 2013, Groner et al 2014, Cox et al 2017.…”
Section: 32mentioning
confidence: 99%