Results 51 to 60 of about 890 (162)

A Review of the Status of Sharks, Rays and Chimaeras of Panama to Guide Research and Conservation

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 4, April 2025.
ABSTRACT Chondrichthyan fishes (sharks, rays and chimaeras) are a group of high conservation concern globally. Species are impacted by varying threats, although fishing pressure is the primary stressor causing population declines. Panama comprises both Pacific and Caribbean coastlines with a diversity of estuarine and marine habitats supporting small ...
Jorge Manuel Morales‐Saldaña   +5 more
wiley   +1 more source

Great Barrier Reef Marine Park Authority Position Statement on the conservation and management of sharks and rays in the Queensland East Coast Inshore Finfish Fishery [PDF]

open access: yes, 2007
The purpose of this document is to state the Great Barrier Reef Marine Park Authority’s (GBRMPA) position on conservation of sharks and rays in relation to the Queensland East Coast Inshore Finfish Fishery (ECIFF).

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Fishers' interactions with endangered “rhinorays” in Karimunjawa National Park, and factors influencing willingness to engage in pro‐conservation behavior

open access: yesConservation Science and Practice, Volume 7, Issue 4, April 2025.
Abstract The “rhinorays” (giant guitarfish‐Glaucostegidae and wedgefish‐Rhinidae) are a critically endangered group of “shark‐like rays,” which have experienced steep global population declines in the past decade due to overfishing. Their slow life histories and high market value increase the risk of trade‐driven extinction and lead to trade‐offs ...
Faqih Akbar Alghozali   +10 more
wiley   +1 more source

Marine Fisheries Information Service No.215 [PDF]

open access: yes, 2013
Marine Fisheries Information Service, Technical and Extension ...
CMFRI, Kochi
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Continental‐Scale Assessment of Climate‐Driven Marine Species Range Extensions Using a Decade of Citizen Science Data

open access: yesDiversity and Distributions, Volume 31, Issue 4, April 2025.
ABSTRACT Aim Climate‐driven extensions of species distributions have serious consequences for human wellbeing and ecosystems. The recent growth of citizen science data collection represents an underutilised resource for the early detection of marine species range extensions (i.e., expansion of species' distributions at the poleward edge) that can ...
Barrett W. Wolfe   +21 more
wiley   +1 more source

On the occurrence of the arrowhead dogfish, Deania profundorum (Chondrichthyes : Squalidae) off southern Portugal, with a missing gill slit [PDF]

open access: yes, 2006
Signalement d’un Deania pro f u n d o ru m ( C h o n d r i c hthyes : Squalidae) capturé dans le sud du Portugal, avec absence d’une fente branchiale. Dans ce travail, nous rapportons la capture d’un chien de mer pointe de flèche, Deania pro f u n d o ...
Coelho, Rui, Erzini, Karim
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상어에서의 기초 보조생식기술 연구 [PDF]

open access: yes, 2022
학위논문(박사) -- 서울대학교대학원 : 수의과대학 수의학과, 2022.2. 박세창.상어는 판새아강 상어상목에 속하는 어종들의 총칭으로, 초기 척추동물 중 현재까지 성공적으로 생존해 있는 대표적인 동물군이다. 척추동물 형성 초기에 나타나 진화의 역사를 고스란히 담고 있는 만큼, 상어는 면역체계, 번식 전략, 암 저항성 등 다양한 측면에서 중요한 진화생물학적 연구의 대상이다.
김상화
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Balancing ecotourism and wildlife management through a conservation behavior approach

open access: yesConservation Science and Practice, Volume 7, Issue 3, March 2025.
We surveyed ecologists, conservationists, and ecotourism professionals to investigate consequences of ecotourism on animal behavior. We highlight four main behavioral themes and solutions for engendering more sustainable ecotourism that mitigates behavioral impacts.
Rachel Y. Chock   +22 more
wiley   +1 more source

Elasmobranchs observed in deepwaters (45-330m) at Isla del Coco National Park, Costa Rica (Eastern Tropical Pacific)

open access: yesRevista de Biología Tropical, 2012
Isla del Coco is an oceanic island 500km off the Pacific coast of Costa Rica. It is a National Park and its marine fauna has been relatively well protected.
Jorge Cortés   +5 more
doaj   +2 more sources

Eocene Shark Teeth From Peninsular Antarctica: Windows to Habitat Use and Paleoceanography

open access: yesPaleoceanography and Paleoclimatology, Volume 39, Issue 11, November 2024.
Abstract Eocene climate cooling, driven by the falling pCO2 and tectonic changes in the Southern Ocean, impacted marine ecosystems. Sharks in high‐latitude oceans, sensitive to these changes, offer insights into both environmental shifts and biological responses, yet few paleoecological studies exist.
Gabriele Larocca Conte   +8 more
wiley   +1 more source

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