In recent years, increasing global trade, travel, and transport had rapidly increased the rate of introduction and diversity of non-native fish species. Once established, some introduced fish species can become aggressive and dangerously invasive. Here, we provide the first report of the occurrence of a non-native Midas cichlid Amphilophus citrinellus in Laguna de Bay using morphological analysis and genetic marker, specifically the mitochondrial gene cytochrome c oxidase subunit 1 (CO1). The results provide important information on the presence of another invasive species in Laguna de Bay that needs to be addressed since this species can competitively exclude, predate, and displace native species.
Longman’s beaked whale, Indopacetus pacificus, is one of the least known of all cetacean species. Its external appearance was only first described in the 21st century. Prior to 2004, the species was known from only six specimens. Although at least twenty more specimens were recovered from strandings since then, knowledge on the species is still very limited. In the Philippines, the first record of the species was confirmed through a stranding in Davao in 2004. Sightings of Indopacetus pacificus alive at sea in the Philippines remain unconfirmed. Herein we account for all the strandings of the species in the Philippines and describe the specimens collected and their status based on examined stranding reports and actual examination of the specimens conducted by one or more co-authors. To date, there are four confirmed strandings of the species, all sub-adult individuals, which occurred at four different sites: 1.) 5.73m male at Matina-Aplaya, Davao in 2004; 2.) 5.02m male at General Nakar, Quezon in 2016; 3.) 5.4m male at Gonzaga and 4.) 5.6m male at Sta. Ana, both in Cagayan Province in 2018. Three of the strandings occurred at northern Luzon, while one in southern Mindanao. Two out of four stranded alive but died shortly after. From three of these the skeleton, stomach contents and tissue samples were examined and collected. Squid beaks, squid eye lenses and fish eye lenses were found in the stomach. DNA analysis using mitochondrial CytB and COI sequences showed that the three (3) specimens were indeed I. pacificus. The skeletal specimen collected from Sta. Ana, Cagayan is by far the most complete in the country and is probably in one of the best conditions in the world. For a cetacean species that is poorly known examination of stranded specimens offers a rare opportunity to collect information. Hence, the importance of standardizing necropsy and stranding data collection protocols, training stranding first-responders and establishing a database are emphasized.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.