A note on the spatial and temporal distribution of humpback whales (Megaptera novaeangliae) off Venezuela, Southeastern Caribbean

نویسندگان

چکیده

This paper presents information on the spatial and temporal distribution of humpback whales in Venezuelan waters. Using a relational database containing from museums Venezuela, published unpublished records were incorporated into Geographical Information System (MapInfo Professional 7.0). A total 53 gathered, which sightings made up 72%, followed by acoustic sampling (9%) intentional capture (6%), stranding (6%) unknown (8%). Humpback mainly sighted over continental shelf northeastern region shallow waters 0-100m depth. The date each record was supports seasonal occurrence North Atlantic off coast. Opportunistic austral winter months do not give conclusive proof that Southern Hemisphere are present during this time, but lead to hypothesis migrate Brazil. Systematic research effort (especially photo-identification) is recommended order better understand whale movements, identity.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Global diversity and oceanic divergence of humpback whales (Megaptera novaeangliae).

Humpback whales (Megaptera novaeangliae) annually undertake the longest migrations between seasonal feeding and breeding grounds of any mammal. Despite this dispersal potential, discontinuous seasonal distributions and migratory patterns suggest that humpbacks form discrete regional populations within each ocean. To better understand the worldwide population history of humpbacks, and the interp...

متن کامل

Deaths and Entanglements of Humpback Whales, Megaptera novaeangliae,

Reports of humpback whales, Megaptera novaeangliae, that either died or were entangled in Hawaiian waters from 1972 through October 1996 were analyzed to determine age class (estimated from body length and/or notes), location, annual frequency, and seasonal distribution of occurrence. Using reports collected from the National Marine Fisheries Service Pacific Area Office and published news repor...

متن کامل

Acoustic and Visual Survey of Humpback Whale (Megaptera novaeangliae) Distribution in the Eastern and Southeastern Caribbean Sea

—Humpback whales (Megaptera novaeangliae) historically ranged throughout the eastern and southeastern Caribbean Sea during the winter months. Commercial whaling from the 1820s to the early 1900s depleted the population. A combined passive acoustic and visual survey for humpback whales was conducted to assess the current winter distribution of this species in areas where it was exploited to depl...

متن کامل

Modeling the spatial and temporal dynamics of foraging movements of humpback whales (Megaptera novaeangliae) in the Western Antarctic Peninsula

BACKGROUND A population of humpback whales (Megaptera novaeangliae) spends the austral summer feeding on Antarctic krill (Euphausia superba) along the Western Antarctic Peninsula (WAP). These whales acquire their annual energetic needs during an episodic feeding season in high latitude waters that must sustain long-distance migration and fasting on low-latitude breeding grounds. Antarctic krill...

متن کامل

HUMPBACK WHALE ( Megaptera novaeangliae ) : North Atlantic Stock

These six regions represent relatively discrete subpopulations, fidelity to which is determined matrilineally (Clapham and Mayo 1987). Recent genetic analysis of mitochondrial DNA (mtDNA) has indicated that this fidelity has persisted over an evolutionary timescale in at least the Icelandic and Norwegian feeding grounds (Palsbøll et al. 1995, Larsen et al. 1996). Genetic partitioning is not evi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The journal of cetacean research and management

سال: 2023

ISSN: ['1561-0713', '2312-2692']

DOI: https://doi.org/10.47536/jcrm.v10i1.662