Evidence map›Paper›PMID 39399432›Full record

ArticlePeerJ2024

The departure of sperm whales (

Héctor Pérez-Puig, Alejandro Arias Del Razo, Daniela Ahuatzin Gallardo, Jaime Bolaños

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in PeerJ, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Integrating cultural dimensions in sperm whale (Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Héctor Pérez-Puig *Marine Mammal Program, Prescott College Kino Bay Center for Cultural and Ecological Studies, Bahía de Kino, Sonora, Mexico.
Alejandro Arias Del Razo *Chemical & Biological Sciences, Universidad de las Américas Puebla, San Andrés Cholula, Puebla, México.
Daniela Ahuatzin GallardoChemical & Biological Sciences, Universidad de las Américas Puebla, San Andrés Cholula, Puebla, México.
Jaime BolañosInstituto de Ciencias Marinas y Pesquerías, Universidad Veracruzana, Veracruz, Veracruz, México.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As sperm whales are important predators that control energy flux in the oceans, changes in their population can be used as a sentinel to measure of ecosystem health. The present study conducted a sperm whale survey of the eastern Midriff Islands Region in the Gulf of California over the course of nine years, recording sightings and collecting photographs of the fluke of sperm whale individuals. A photo-identification catalog was compiled, while individual recapture data were used to estimate the population size in the central portion of the Gulf of California, using a Jolly-Seber POPAN open population model. The results obtained show a yearly population of between 20 and 167 sperm whales, with a super population of 354 sperm whales observed between 2009 and 2015. However, from 2016 to 2018, no sightings of the species were recorded, which coincides with the decline observed in landings of their main prey, the jumbo squid, in the region. General additive model conducted on sperm whale sightings per unit of effort vs jumbo squid landings obtained an adjusted R

Indexed as

DecapodiformesSperm WhaleAnimalsCaliforniaEcosystemPopulation DensityPopulation DynamicsCetaceanENSOMarine mammalMexicoPopulation ecologyPopulation oscillationPredator-Prey Interaction

Identifiers

PMID39399432
PMCPMC11468805

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.