Systematics and Biogeography of cephalopods. Volume II

Voss, Nancy A.; Sweeney, M. J.

doi:10.5479/si.00810282.586.277

Cited by 29 publications

(25 citation statements)

References 67 publications

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“…Species differences in squid consumed is consistent with the distinct at-sea segregation of the two albatross species, where Laysan albatrosses forage in colder, higher-latitude waters than black-footed albatrosses for most of the breeding season (Hyrenbach et al, 2002;Kappes et al, 2010Kappes et al, , 2015. These patterns are coincident with the general worldwide distribution of histioteuthids in warm-temperate and tropical regions and gonatids in cool-temperate and Arctic regions (Kubodera and Jefferts, 1984;Nesis, 1987;Voss et al, 1998). Small epipelagic squid were slightly more prevalent in Laysan than black-footed albatross diets, as they consumed a larger proportion of the small gonatid B. anonychus (consistent with .…”

Section: Qfasa Diet Estimation-a Critical Evaluationsupporting

confidence: 58%

Fisheries Exploitation by Albatross Quantified With Lipid Analysis

et al. 2018

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Mortality from incidental bycatch in longline fishery operations is a global threat to seabird populations, and especially so for the albatross family (Diomedeidae) in which 15 out of 22 species are threatened with extinction. Despite the risks, fisheries remain attractive to many species of seabird by providing access to high-energy foods in the form of discarded fish and offal, target fish, and baited hooks. Current policy regarding fisheries management is increasingly aimed at discard reform, exemplified by a discard ban initiated in the European Union Common Fisheries Policy in 2014. While there is global agreement on the importance of minimizing the waste inherent in bycatch and discards, there is also growing concern that there is a need to understand the extent to which marine animals rely on fisheries-associated resources, especially at the colony and individual levels. We used a novel adaptation of quantitative fatty acid signature analysis (QFASA) to quantify fisheries-associated prey in the diet of two threatened North Pacific albatross species. Diet was estimated with QFASA using multiple lipid classes from stomach oil collected from incubating and chick-brooding Laysan and black-footed albatrosses across three breeding seasons. Prey-specific error was estimated by comparing QFASA estimated diets from known "simulated" diets, which informed the level of precaution appropriate when interpreting model results. Fisheries-associated diet occurred in both albatross species across both the incubation and chick-brood stages; however, neither species relied on fisheries food as the dominant food source (consisting of <10% of the total pooled proportional diet in each species). While total diet proportion was low, the incidence of fisheries-associated resources in albatross diets was highest in the 2009-2010 breeding season when there was a strong central Pacific El Niño. Additionally, the diets of a few individuals consisted almost entirely of fisheries-associated food, indicating that some birds might specialize on this foraging tactic. QFASA proved a tractable method for estimating the importance of fisheries-associated resources in albatross diet, and, as a tool, has the potential to enable long-term monitoring of diet and fisheries reliance of breeding colonies in the northwestern Hawaiian Islands.

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Section: Qfasa Diet Estimation-a Critical Evaluationsupporting

confidence: 58%

Fisheries Exploitation by Albatross Quantified With Lipid Analysis

et al. 2018

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“…1). This spatial approach has been already applied by Voss et al (1998) to describe the biogeography of some pelagic squid families. Backus and collaborators carried out an extensive biogeographical study of lantern fish (myctophids) throughout the Atlantic Ocean.…”

Section: Methodsmentioning

confidence: 99%

Large‐scale Diversity Patterns of Cephalopods in the Atlantic Open Ocean and Deep Sea

Rosa

Dierssen

González

et al. 2008

Ecology

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Although the oceans cover 70% of the Earth's surface and the open ocean is by far the largest ecosystem on the planet, our knowledge regarding diversity patterns of pelagic fauna is very scarce. Here, we examine large-scale latitudinal and depth-related patterns of pelagic cephalopod richness in the Atlantic Ocean in relation to ambient thermal and productive energy availability. Diversity, across 17 biogeochemical regions in the open ocean, does not decline monotonically with latitude, but is positively correlated to the availability of oceanic resources. Mean net primary productivity (NPP), determined from ocean color satellite imagery, explains 37% of the variance in species richness. Outside the poles, the range in NPP explains over 40% of the variability. This suggests that cephalopods are well adapted to the spatial patchiness and seasonality of open-ocean resources. Pelagic richness is also correlated to sea surface temperature, with maximum richness occurring around 15 degrees C and decreasing with both colder and warmer temperatures. Both pelagic and benthos-associated diversities decline sharply from sublittoral and epipelagic regions to the slope and bathypelagic habitats and then steadily to abyssal depths. Thus, higher energy availability at shallow depths seems to promote diversification rates. This strong depth-related trend in diversity also emphasizes the greater influence of the sharp vertical thermal gradient than the smoother and more seasonal horizontal (latitudinal) one on marine diversity.

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“…The species database has been compiled by means of an exhaustive search of the primary literature. The main data sources for each taxa were the following (see also the references cited in each work for a more complete list of references): Hydromedusae (Pages, Gili & Bouillon, 1992;Bouillon, 1999), Siphonophorae Pugh, 1999), Cephalopoda (Villanueva & Sanchez, 1993;Voss et al ., 1998;Nesis, 1999), Euphausiacea (Gibbons, Spiridonov & Tarling, 1999), Stomatopoda (Manning, 1969(Manning, , 1977, Crustacea Decapoda (Macpherson, 1991;Udekem d'Acoz, 1999;Boschi, 2000), Chaetognatha (Casanova, 1999), Appendicularia (Esnal, 1999), Salpida (Esnal & Daponte, 1999) and Pisces (Randall, 1983;Menezes & Figueiredo, 1985;Whitehead et al ., 1986;Böhlke, 1989;Gon & Heemstra, 1990;Quero et al ., 1990). Furthermore, an additional and exhaustive search was carried out in journals usually including papers on taxonomy and biogeography of Atlantic species (see Macpherson, 2002 for a list of the journals).…”

Section: Ata Selectionmentioning

confidence: 99%

Species range size distributions for some marine taxa in the Atlantic Ocean. Effect of latitude and depth

Macpherson

2003

Biological Journal of the Linnean Society

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The range size distributions of 6643 species in ten different fish and invertebrate taxa dwelling in pelagic (latitudinal range sizes) and benthic (latitudinal and depth range sizes) habitats on both sides of the Atlantic Ocean (80 ∞ N -70 ∞ S) were studied. The objectives were to analyse: (1) the range size distribution patterns for the various taxa and whether they have right/left skewed or lognormal distributions; (2) the geographical species distributions, to ascertain whether the distribution ranges change with latitude (Rapoport's rule); and (3) the relationship between the depth ranges of benthic species and their maximum depth of occurrence and how depth range size distributions change with latitude. The pelagic taxa exhibited larger range sizes than did the benthic taxa, continental slope/rise species excepted. On the other hand, the boundaries between geographical provinces for both benthic taxa and pelagic taxa tended to occur in association with major oceanographic processes. The shape of the latitudinal range frequency distributions (LRFDs) of the pelagic organisms were distinctly left-skewed, and the LRFDs for most taxa were significantly different from lognormal. There was no common pattern for the distributions of the benthic organisms, which were lognormal in Cephalopoda, Stomatopoda, and Crustacea Decapoda and tended to be left-skewed and significantly different from lognormal in Pisces. The applicability of Rapoport's rule was not clearly inferable from the results, and the rule appears to be conditioned by the location of biogeographical boundaries and the endemism rate in the different biogeographical provinces. A clear increase in depth range size with maximum depth range was observable for benthic species, confirming previous studies. Species' depth range distributions displayed a discernible latitudinal pattern, right-skewed at high latitudes and left-skewed at low latitudes. The location of biogeographical boundaries, and endemism rate by biogeographical province were considered to be the factors most useful in explaining species' distribution patterns and their conformity or nonconformity to Rapoport's rule.

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Systematics and Biogeography of cephalopods. Volume II

Cited by 29 publications

References 67 publications

Fisheries Exploitation by Albatross Quantified With Lipid Analysis

Fisheries Exploitation by Albatross Quantified With Lipid Analysis

Large‐scale Diversity Patterns of Cephalopods in the Atlantic Open Ocean and Deep Sea

Species range size distributions for some marine taxa in the Atlantic Ocean. Effect of latitude and depth

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