Marine mammal bycatch by the industrial bottom trawl. Incidental catch of a franciscana dolphin pontoporia blainvillei cetacea, pontoporiidae in a pair trawl off southern brazil. Taxonomically, it is a member o the river dowphin group an the anly ane that actually lives in the ocean an seltwatter estuaries, rather than inhabitin exclusively freshwatter seestems references. Reproductive parameters of pontoporia blainvillei cetacea. Creative commons attribution non commercial cc bync. Fmib 34087 pontoporia blainvillei g rvais gray the pontoporia. Environmental predictors of habitat suitability and. Evidence of positive selection of aquaporins genes from. Age and growth of franciscana dolphins, pontoporia. Adult acanthocephalans are typically found in the intestine of vertebrates, where they can readily absorb nutrients. Morphological description of the male genital organs of pontoporia. The franciscana dolphin, pontoporia blainvillei, is the most threatened small cetacean in the southwestern atlantic ocean. To determine extreme and optimum temperature and salinity for growth in the mangrove cockle anadara tuberculosa, we measured the scope.
We used mitochondrial dna, 10 microsatellites, and sex data to. Geographical variation in franciscana pontoporia blainvillei external morphology volume 92 issue 8 beatriz h. Genetic diversity and population structure of synthesium. Understanding the human dimension of bycatch of large. Genetic diversity and population structure of the franciscana dolphin. The pdf file you selected should load here if your web browser has a pdf reader plugin installed for example, a recent version of adobe acrobat reader if you would like more information about how to print, save, and work with pdfs, highwire press provides a helpful frequently asked questions about pdfs alternatively, you can download the pdf file directly to your computer, from where it. An pontoporia blainvillei in uska species han mammalia nga syahan ginhulagway ni paul gervais ngan dorbigny hadton 1844. Population genetics of franciscana dolphins pontoporia. Intestinal helminths of franciscana pontoporia blainvillei. Pontoporia blainvillei is a small cetacean endemic to coastal waters of south america, from northern argentina to southeastern brazil. A supermatrix analysis of genomic, morphological, and. The franciscana dolphin, pontoporia blainvillei, is endemic to the coastal waters of the southwestern atlantic ocean and the most endangered dolphin in the.
Pdf franciscana dolphins are small odontocetes hard to study in the field. Patterns of population structure at microsatellite and. Corynosoma cetaceum in the stomach of franciscanas. Pbde levels in franciscana dolphin pontoporia blainvillei. Reported to the convention of migratory species unep, june 1998, bonn, germany, unpublished. Ontogeny and evolution of the soundgenerating structures in. Jan 01, 2002 read reproductive parameters of pontoporia blainvillei cetacea, pontoporiidae, on the coast of sao paulo and parana states, brazil, mammalia international journal of the systematics, biology and ecology of mammals on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Population structure of the endangered franciscana dolphin plos. The mitigation of bycatch has been leaded by aquamarina, a small nongovernmental organization ngo supported by bigger national and international ngos e.
Handbook on whales, dolphins and dugong from indian seas. This list is for informational purposes only, indicating volumes currently in the nmml library collection. Dermochelys coriacea sea turtles and the endemic franciscana pontoporia blainvillei dolphin fig. Although a large body of molecular data has accumulated. January 2004 this list is for informational purposes only, indicating volumes currently in the nmml library collection. The franciscana, pontoporia blainvillei, is a threatened small cetacean of the western south atlantic ocean and is commonly caught incidentally in fishing nets along its distribution. Read corynosoma cetaceum in the stomach of franciscanas, pontoporia blainvillei cetacea. Geographical variation in franciscana pontoporia blainvillei. A previous study on the acanthocephalan corynosoma cetaceum in. Gastrointestinal helminths of the franciscana pontoporia. Population genetic structure and social kin associations. Effects of fishing bycatch and conservation status of the. Echolocation behavior of franciscana dolphins pontoporia blainvillei in the wild.
Pontoporia blainvillei was the only species exhibiting a rostrum surpassing the anterior limits of the epicranial complex during foetal stages. If an internal link led you here, you may wish to change the link to point directly to the. It is a member of the river dolphin group and the only one that lives in the ocean and saltwater estuaries, rather than inhabiting exclusively freshwater systems. The site is also a representative example of significant ongoing.
However, the epicranial complex remained similar in composition and proportion compared to the other species. Feeding habits of the franciscana dolphin pontoporia. At present, much research effort has been devoted to investigate overall average responses of parasite populations to specific factors, e. The site contains the most important habitats for insitu biodiversity conservation in the region, and has a large diversity of endemic and migratory species such as the endangered green turtle chelonia mydas and the vulnerable franciscana dolphin pontoporia blainvillei. Plastics were also recorded in the resident franciscana dolphins pontoporia blainvillei denuncio et al. Four franciscana management areas have been proposed. Modelling truncated data to estimate incidental kills of franciscana, pontoporia blainvillei, by gillnets. Pdf the franciscana pontoporia blainvillei is the most threatened small cetacean of south america. The family pontoporiidae cetacea, odontoceti inioidea is currently represented in our oceans by just one species of diminutive dolphin pontoporia blainvillei, franciscana. Oct 19, 2011 the franciscana dolphin, pontoporia blainvillei, is an endemic species of the southwestern atlantic ocean, whose distribution extends from itaunas, brazil lat 1825. Scaldiporia vandokkumi, a new pontoporiid mammalia.
Understanding the human dimension of bycatch of large marine. However, corynosoma cetaceum has been frequently reported in the stomach of cetaceans from the southern hemisphere. This study evaluated the feeding habits of the franciscana dolphin pontoporia blainvillei in southeastern brazil. We used mitochondrial dna, 10 microsatellites, and sex data to investigate t. The ecological significance of this habitat was investigated by examining data on number, sex ratio, maturity status, biomass, and fecundity of c. The pdf file you selected should load here if your web browser has a pdf reader plugin installed for example, a recent version of adobe acrobat reader if you would like more information about how to print, save, and work with pdfs, highwire press provides a helpful frequently asked questions about pdfs. Pdf reassessment of the franciscana pontoporia blainvillei. Worlds cetaceans pdf, international union for conservation of nature, the world. To help the conservation of pontoporia populations, it is fundamental that their limits. W siciliano 1994, to northern patagonia, argentina 4210. It inhabits waters from shore to 55km offshore and up to a water depth of 40m pinedo et al.
Population genetic structure and social kin associations of. Ott and daniel danilewicz franciscanas life history distribution and habitat the franciscana, pontoporia blainvillei, is endemic to the coastal waters of the southwest atlantic ocean, occurring from itanas. Global map of living and fossil inioids, projected onto an orthographic globe, centered on 15n, 45w. The franciscana dolphin pontoporia blainvillei gervais and dorbigny, 1844 in habits the coastal waters off eastern south america from valdes peninsula 42. Understanding the temporal pattern of diversification in the group as well as the evolution of cetacean anatomy and behavior requires a robust and wellresolved phylogenetic hypothesis. Retrieved on 2 july 2012 mammal species of the world v3, 2005 link. Pdf echolocation behavior of franciscana dolphins pontoporia.
Accumulation of heavy metals in the franciscana pontoporia. Journal of mammalogy, volume 88, issue 5, 18 october 2007, pages 3541. Part i chapter 9 effects of fishing bycatch and the conservation status of the franciscana dolphin, pontoporia blainvillei eduardo r. Cetacea dolphins, porpoises, and whales is a clade of aquatic species that includes the most massive, deepest diving, and largest brained mammals. Body fat condition in franciscanas pontoporia blainvillei in rio. Pontoporia blainvillei in mammal species of the world. Recent counts have come up with 17 remaining individuals. Pontoporia blainvillei, platanista gangetica, mandible, skull introduction convergent evolution, or convergence, is the independent evolution of similar phenotypes in different lineages losos, 2011, producing taxa that are more similar than expected given their phylogenetic relatedness conway morris, 2008. Pontoporia blainvillei society for marine mammalogy. However, the epicranial complex remained similar in composition and proportion compared to the other species, except in the size of the invaginations of the nasal complex. Pontoporia, one of the nereids in greek mythology disambiguation page providing links to topics that could be referred to by the same search term this disambiguation page lists articles associated with the title pontoporia. Due to anthropogenic factors, the franciscana dolphin, pontoporia blainvillei, is the most threatened small cetacean on the atlantic coast of south america. Results of the analyses of 14 studies on the diet of pontoporia blainvillei.
River dolphin simple english wikipedia, the free encyclopedia. Isthminia panamensis, a new fossil inioid mammalia. Marine mammal bycatch by the industrial bottom trawl fishery. The impact of incidental kills by gillnets on the franciscana dolphin pontoporia blainvillei in southern brazil. The aim of this study was to use species distribution models to estimate the effects of environmental variables on the habitat suitability of river dolphins pontoporia blainvillei franciscanas along their overall biogeographical distribution. The franciscana dolphin pontoporia blainvillei is characterized by a long rostrum, a feature that is shared with the families formerly classified as river dolphins pontoporiidae, platanistidae. Based on the literature, we selected six environmental variables to be included in the models. However, it is not considered further in my thesis, because of its coastal distribution. Ontogeny and evolution of the soundgenerating structures. Mammal species of the world a taxonomic and geographic reference.
Age distribution of franciscanas, pontoporia blainvillei, incidentally captured from rio grande do sul, brazil rs and buenos aires, argentina ba. Commercialized areas that create agricultural runoffs andor industrialized. An pontoporia blainvillei in nahilalakip ha genus nga pontoporia, ngan familia nga iniidae. However, studies on parasite populations usually pay little attention to individual variation inequality in reproductive success. Incidental mortality of franciscana dolphin pontoporia. The franciscana dolphin pontoporia blainvillei, a small cetacean endemic to. Stomach contents were collected from a total of 145 dead specimens found incidentally caught by fishing vessels or stranded between 2005 and 2015. Taxonomically, it is a member o the river dowphin group an the anly ane that actually lives in the ocean an seltwatter estuaries, rather than inhabitin exclusively freshwatter seestems. The franciscana pontoporia blainvillei is an endemic dolphin of the coasts of brazil, uruguay and argentina. Ramos, carolina bertozzi, juliana marigo, pablo bordino, paul g. This disambiguation page lists articles associated with the title pontoporia. The bycatch of both dolphins and turtles involves juvenile and adult animals that offer the greatest potential for population recovery crouse et al.
1126 242 380 363 848 889 970 310 241 330 1505 1144 26 825 1462 800 727 437 1511 112 847 68 508 1612 1307 164 707 1044 488 427 231 642 1062 1524 508 874 1233 1414 428 1178 1158 843 1104 119 478 890