Winter Mortality of Seabirds on the Portuguese Coast

Teixeira, António

doi:10.1007/978-3-642-70895-4_24

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…These are the most northern records in the western Atlantic. In the eastern Atlantic this species has been recorded from Ireland, the Netherlands and France south to South Africa (Allen 1941;Fraser 1974;Maul and Sergeant 1977;Teixeira 1979;Ross 1984). Pygmy Sperm Whales are found in the Indian Ocean (Leatherwood and Reeves 1989;Chantrapornsyl et al 1991) but do not appear to have been recorded: in the Mediterranean Sea (Baccetti et al 1991).…”

Section: Distributionmentioning

confidence: 99%

The status of the Pigmy Sperm Whale, Kogia breviceps, in Canada

Baird,

Nelson,

Lien

et al. 1996

The Canadian Field-Naturalist

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The general biology, world-wide status and management of the Pygmy Sperm Whale, Kogia breviceps, with special reference to its status in Canadian waters, is reviewed. Pygmy Sperm Whales appear to be uncommon in Canadian waters; there are several unconfirmed sighting records off British Columbia and only four stranding records off the Canadian east coast.Little is known about its biology or world-wide status, and although it is taken in small numbers both directly and incidentally in fisheries, no serious threats to its status are apparent. No COSEWIC designation is required regarding its status in Canadian waters.Le présent rapport résume la biologie générale, le statut international et la gestion du Cachalot Pygmée, Kogia breviceps, et s'attache plus particuliérement a son statut dans les eaux canadiennes. Le Cachalot Pygmée semble étre une espéce inhabituelle dans les eaux canadiennes; il existe plusieurs mentions visuelles de cachalots au large de la Colombie-Britannique, mais aucune n'a été confirmée. En outre, on ne dispose que de quatre mentions de specimens échoués le long de la céte est du Canada. On ne connait que peu de détails au sujet de sa biologie ou de son statut international. Bien que le Cachalot Pygmée soit capturé en petit nombre, que ce soit directement ou comme prise fortuite par les echeurs, il ne semble y avoir aucune menace grave a son statut. Son statut dans les eaux canadiennes ne nécessite donc aucune désignation par le CSEMDC.

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Section: Distributionmentioning

confidence: 99%

The status of the Pigmy Sperm Whale, Kogia breviceps, in Canada

Baird,

Nelson,

Lien

et al. 1996

The Canadian Field-Naturalist

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Body condition of stranded Razorbills and Atlantic Puffins in the Western Mediterranean

Trapletti‐Lanti,

Expósito‐Granados,

López‐Martínez

et al. 2024

Ecology and Evolution

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Annual mass migrations of seabirds between their breeding and wintering grounds are critical for ensuring their survival and reproductive success. It is essential to comprehend their physical condition in order to identify the causes of death and to facilitate conservation efforts. This study focuses on evaluating the age, body condition index, and metabolites in liver and muscle (triglycerides, glycerol, glycogen, cholesterol, lactate, and glucose) of stranded Razorbills (n = 84) and Atlantic puffins (n = 11). The study was conducted along the Andalusian coast of Spain during the winter season of 2022–2023. The study examined the body condition of stranded individuals and their metabolic state to determine potential factors that may have caused their deaths. The study found that the majority of stranded individuals were juveniles. Both species exhibited low levels of carbohydrate (glucose and glycogen) in their tissues and high levels of lactate in their muscles. These findings could suggest that the individuals had undergone prolonged, strenuous exercise, demanding energy on anaerobic pathways, which may have been associated with migration. The study highlights the significance of adhering to standardized protocols when assessing the body condition of stranded seabirds. Doing so can help to identify causes of death and facilitate conservation efforts. A proposed index for body condition, which incorporates biometric measurements and individual physical condition, provides a comprehensive means of understanding the health of these unique species. This study underscores the importance of further research into the conservation measures and recommendations for protecting seabird populations. It is critical to comprehend the contributing factors of mass mortality incidents to work towards safeguarding these species and preserving their vital migration patterns.

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