Vol. 21 No. 1 (2026)

A marine otter emerges out of its cave in Pucusana, Peru.

This is 21(1) 2026 regular issue of LAJAM

Editor-in-Chief: Miriam Marmontel

Managing Editor: Daniel Gonzalez-Socoloske

Layout Editor: Aileen Arango

Cover Photo: A marine otter emerges out of its cave in Pucusana, Peru on 5 May 2023. Photo: Luis Santillán

Published: 2026-04-30

Editorial

Editorial

Miriam Marmontel

1
- Marmontel LAJAM 21.1 2026

Articles

A threefold increase in documented cetacean diversity in the Windward Dutch Caribbean

Lucas Bernier, Myrtille Dupin, Ayumi Kuramae Izioka, Leslie Hickerson, Eleanor Butler, Stacey Mac Donald, Tadzio Bervoets, Jeffrey Bernus

2-10
- Bernier et al LAJAM 21.1 2026
Spatial analysis of habitat loss for the endangered marine otter Lontra felina (Molina, 1782) in Peru

María F. Sánchez, Orlando Advíncula, Helbert Anchante, Luis Santillán

11-20
- Sánchez et al LAJAM 21.1 2026

Notes

Jaguar predation on Araguaian river dolphins: Material evidence and likely contexts for increased interactions

Leandro Silveira , Giselle Bastos Alves, Anah Tereza de Almeida Jácomo, Tiago Jácomo Silveira, Douglas Santos , Sebastião Pegoraro Monteiro Guimarães, Cristiane Gonçalves de Moraes, Everton B. P. Miranda

21-26
- Silveira et al LAJAM 21.1 2026
First confirmed case of neonatal fraternal twin humpback whales in the Mexican Pacific Distinct Population Segment

Astrid Frisch-Jordán, Luis Manuel Enríquez-Paredes, Myriam Llamas-González, Nelva L. Victoria-Cota, Fabiola Flores-Márquez, Jorge Esteban Morales-Vázquez, Eva Torres Campos, Carolina Reyes-Núñez, Nicola Ransome, Christian D. Ortega-Ortiz

27-35
- Frisch-Jordán et al LAJAM 21.1 2026
Insights into sex- and age-related feeding habits of the common bottlenose dolphin (Tursiops truncatus truncatus) in Southern Brazil

Gabriela Inácio da Silva I., Suelen Maria Beeck da Cunha, Marta Jussara Cremer

36-42
- da Silva I et al LAJAM 21.1 2026
New sighting of Arnoux's beaked whale (Berardius arnuxii) at the inshore locality of Paradise Bay, West Antarctic Peninsula

Manuel Novillo , Federico German Riet Sapriza, Elling Deehr Johannessen, Javier Negrete

43-47
- Novillo et al LAJAM 21.1 2026
First documented record of cookie-cutter shark (Isistius spp.) bite marks on a killer whale (Orcinus orca) in the Southwestern Atlantic Ocean

Julio D. Loureiro, Juan P. Loureiro, Joaquín M. C. Gana, Eugenia Argañaraz, Gisela V. Giardino, Romina Nuñez Favre

48-52
- Loureiro et al LAJAM 21.1 2026

Vol. 21 No. 1 (2026)

Editorial

Articles

Notes

Information