Endangered Species Research

@brendangodley.bsky.social
@sharkman1885.bsky.social

Side-view of an American crocodile with a gaped mouth showing that it is missing nearly all of its teeth

🦤🌐🧪When an American crocodile in South Florida died unexpectedly during a routine capture event, a field necropsy revealed clinical signs of Pb toxicosis and 22.42 g of Pb in the animal’s stomach. bit.ly/esr01474

@brendangodley.bsky.social

Zebra shark underwater with sand and rocks on the bottom and small dark-coloured fishes swimming around.

🦤🌐🧪ESR Special #27. Southern Africa is home to well over 200 species of #Chondrichthyans. Over a third are considered threatened. This Special is open to all authors, including submissions based on presentations at the 8th SARS in 2025. Contribute now! bit.ly/esr_special27

Photo of nesting sea turtle on a beach with the title of the special superimposed on it.

🐢🦤🧪 ESR Special #26. Initiated at the end of the 20th century, many #MarineTurtle monitoring programs have been ongoing for two or more decades and provide valuable insights into population dynamics and conservation. Contribute now! bit.ly/esr_special26
@brendangodley.bsky.social

Photo of a Mojave desert tortoise

🦤🌐🧪 We developed a novel modeling framework, integrating disparate data types over 45yrs, to estimate true survival of the Mojave desert tortoise. Our results suggest positive effects of precipitation and higher survival of adult males. bit.ly/esr01468
@brendangodley.bsky.social

longfin smelt

🦤🧪🌐 Our morphometric study of the endangered Longfin Smelt (Spirinchus thaleichthys) shows clear sex-based shape differences and weak geographic trends. These findings help inform conservation and reproductive biology in the San Francisco Estuary. bit.ly/esr01471
@brendangodley.bsky.social

Peirson’s milk-vetch within the Imperial Sand Dunes Recreation Area, California

🦤🌐🧪A three-year study to evaluate imagery classification techniques to assess the feasibility of modeling individual Peirson’s milk-vetch (Astragalus magdalenae var. peirsonii) within the Imperial Sand Dunes Recreation Area, California. bit.ly/esr01467
@brendangodley.bsky.social

Photograph of the complete reproductive tract of an adult female green turtle (Chelonia mydas), laid out on a black surface. The paired ovaries are centrally located and filled with numerous developing follicles of varying sizes. The infundibula extend from each ovary, leading into the coiled oviducts that flank both sides of the tract. A measurement scale is visible along the bottom edge of the image.

🦤🌐🧪#GreenTurtle reproductive dynamics! 🐢 Over half of harvested females off Nicaragua were adults, of which 6–39% bred each year. Size regulations in Nicaragua may disproportionately target large juvenile females, urging policy updates. 🌿 #TurtleConservation @brendangodley.bsky.social

Nesting short-tailed albatross on Torisihima Island, January 2020. Both the Torishima- and Senkaku-type birds breed on Torishima Island, but they are hardly distinguishable from their appearance.

We used satellite imagery to estimate the population of the short-tailed #albatross on the Senkaku Islands, recently classified as an independent species. The population comprised only about 150 pairs, indicating urgent conservation needs. bit.ly/esr01462
brendangodley.bsky.social

Leatherback turtle lying on a beach with a tag attached to its carapace.

🦤🌐🧪 #Leatherback #seaturtles perform extensive post-nesting migrations, which can be influenced by mesoscale eddies and ocean currents. We use satellite telemetry to investigate the routes taken by turtles in the #IndianOcean. bit.ly/esr_58_417
@brendangodley.bsky.social

‪@prodelphinus.bsky.social‬

a photo of Amazon River dolphins and some peaople in canoes observing them in a river.

🦤🌐🧪 Amazon River dolphins are elusive 🐬, but isotopes + satellite tracking reveal variation in their feeding behavior. Using δ15N-AA, this study sets a new baseline for their trophic ecology and highlights them as flexible top predators in the Amazon Basin. bit.ly/esr_58_303

@brendangodley.bsky.social

Nesting flatback turtle

🦤🧪🌐 🐢 Concern about nesting #flatback #turtles on Delambre Island, Western Australia. Despite natural cycles, population currently appears to be dropping. Monitoring and adaptive management are vital to understand and protect this unique population.
bit.ly/esr_58_287

@brendangodley.bsky.social
@exetermarine.bsky.social
@bigelowlab.bsky.social
darlingmarine.bsky.social

Habitat degradation may hinder #pangolin ability to raise pups, despite their perceived adaptability. We documented the elusive wild female #ManisJavanica during maternal and non-maternal stages, offering insights for evidence-based conservation. bit.ly/esr_58_223

A lake chubsucker in a water tank.

🧪🦤🌐
Endangered Lake Chubsucker in Canada are feeling the heat – literally. 🔥🐟 While they hold their own in low-oxygen waters, rising temps are already affecting their behaviour, which is concerning as climate change intensifies. bit.ly/esr_58_275

@brendangodley.bsky.social

Portrait of a Chaco eagle

🦤🌐🧪Wind beneath my wings: we describe the spatial and temporal extent of the post-fledging dependence period of the endangered #ChacoEagle (Buteogallus coronatus), related with individual sex, body condition and ecoregion. bit.ly/esr_58_193

@elibalderas.bsky.social
@brendangodley.bsky.social  
@exetermarine.bsky.social ne.bsky.social 
@exetergses.bsky.social es.bsky.social

🌐🧪🦤 A population assessment and ecological study confirmed that Sulcaria isidiifera is a critically endangered lichen that only occurs on the central coast of California. Translocation was also tested as a potential conservation measure to protect this rare lichen. bit.ly/esr_58_103

@brendangodley.bsky.social  @exetermarine.bsky.social 
@exetergses.bsky.social

Photo of a double crested cormorant.

🌐🧪🦤 Automated cameras in remote field sites captured breeding data for at-risk #doublecrestedcormorant in #StraitofGeorgia #BritishColumbia. Multievent capture-recapture models were used to understand negative effects on nest success across entire breeding season. bit.ly/esr_58_85

@brendangodley.bsky.social 
@exetermarine.bsky.social 
@exetergses.bsky.social
@BigelowLab.bsky.social
darlingmarine.bsky.social

Three bottlenose dolphins in the water.

🌐🧪🦤 Using DNA from skin samples, age (1–45 yr) and sex of Lahille’s bottlenose #dolphins in Brazil were estimated. With <600 left, this non-invasive #epigenetic tool aids survival predictions and #conservation 🧬🐬. bit.ly/esr_58_137

@brendangodley.bsky.social 
@exetermarine.bsky.social 
@exetergses.bsky.social
@BigelowLab.bsky.social
darlingmarine.bsky.social

North Atlantic right whales “Arpeggio” (Catalog #2753) and Catalog #4617 pass by each other while skim feeding in the Great South Channel in February 2024

🌐🧪🦤 Considering prey availability has the exciting potential to improve marine conservation efforts, as evidenced in this case study modeling the habitat of critically endangered North Atlantic #RightWhales. #OceanScience #Maine #ProtectOurOceans #BluePlanet. bit.ly/esr_58_67

@brendangodley.bsky.social  @exetermarine.bsky.social 
@exetergses.bsky.social

An Atlantic sturgeon lying caught on a boat in the water next to a wooden jetty.

🌐🧪🦤 We reveal that #AtlanticSturgeon #Acipenseroxyrinchus produce low frequency thunder-like sounds associated with #spawning, similar to #lakesturgeon #Acipenserfulvescens. This finding lays the groundwork for passive acoustic monitoring of this endangered species. bit.ly/esr_58_1